JP2000067262A - Image display device, image display method, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move to an arbitrary position in a three-dimensional space and to make it possible to display and to obtain its visual field by piling a point where a line of sight coming from a view point crosses an object upon a visual, having it display on a two-dimensional screen and having the view point and the point move within a three-dimensional space. SOLUTION: World coordinates (Xc, Yc and Zc) of a camera 200 which is to become a view point and their angles θ are specified. World coordinates (Xa, Ya and Za) of a cursor A287 on a screen 285 are calculated. A vector B210 directing toward the cursor A287 (Xa, Ya and Za) from the view point of the camera 200 is calculated. The vector B210 is extended in its direction and an intersection D240 of the extended vector B210 with a selected object, for example, a polygon C250, is obtained. Once the intersection D240 is obtained, the intersection D240 at a new position can be similarly obtained from the cursor 287 at the new position and the camera 200.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an image display device, an image display method, and a recording medium.

[0002]

2. Description of the Related Art Conventionally, when a field of view from a viewpoint is displayed on a two-dimensional screen in real time in a three-dimensional space, for example, a virtual three-dimensional space such as a game, the field of view is changed as intended by an operator of the game or the like. In order to do so, complicated operations were required.

FIG. 1 shows a virtual three-dimensional space for a conventional game or the like.

In FIG. 1, world coordinates 170 represent coordinates in a virtual three-dimensional space, and a camera 100 represents an operator's viewpoint. In the virtual three-dimensional space, polygon 1 (1
50), an object such as polygon 2 (160) (hereinafter simply referred to as “object”), and the field of view from the camera 100 is 2
When projected on a three-dimensional screen, it looks like a screen 185. The screen coordinates 180 indicate coordinates on a two-dimensional screen.

[0005] The current moving path 110 is the current moving path where the camera 100 exists. The camera 100 can move on the current moving path 110 only along the current moving spline 115. At the intersection 105, the current traveling path 110 branches into a left traveling path 130, a right traveling path 120, or a forward traveling path 145. No matter which path is selected, the camera 100 moves the left moving spline 135 and the right moving spline 125, respectively.
Alternatively, movement on each movement path is possible only along the forward movement spline 145. That is, each moving spline is fixed on each moving path, and the camera 100 can move only on the fixed moving spline, that is, only on the fixed moving path. Therefore, the camera 100 in the related art cannot move to an arbitrary position in the three-dimensional space, and the camera 100 is displayed on the screen 185 when selecting a branch destination movement path at the intersection 105. In a state where the cursor 187 is placed on the moving path in the direction to be branched, the moving path is selected by clicking with a mouse or the like. Therefore, the camera 10
In the case of 0, even if an attempt is made to select a position other than the moving path, the movement is simply stopped, and such selection cannot be made.

When there are obstacles 127, holes 137, etc. on the moving path, if a moving spline for avoiding them is set, it is possible to move as such and avoid them. However, it has not been possible to avoid the obstacle 127 or the like by climbing over the obstacle 127 or climbing again after descending to the bottom of the hole 137 according to the operation of the operator. Further, when the obstacle 127 or the like is moving, it cannot be avoided by the conventional method of moving only along the fixed moving spline.

[0007]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problem, and a point at which a line of sight from a viewpoint intersects with an object is superimposed on a field of view.
An image display device and an image display that can be displayed on a three-dimensional screen and freely move a viewpoint and a point in a three-dimensional space to move to an arbitrary position in the three-dimensional space and display the field of view. It is to provide a method and a recording medium.

[0008]

According to the first aspect of the present invention,
View display means for displaying a view seen from a viewpoint in a three-dimensional space on a two-dimensional screen, and a point where the view from the viewpoint hits an object in the three-dimensional space.
An image display device comprising: a point display means for displaying a point on a three-dimensional screen in a superimposed manner; and a point moving means for moving the point in a three-dimensional space. This is an image display device for displaying a new field of view on a two-dimensional screen.

According to a second aspect of the present invention, in the first aspect, use means for using an object in the three-dimensional space can be further provided.

[0010] The third aspect of the present invention is the first or second aspect.
In the above, the point display means may include: an object selecting means for selecting an object in a three-dimensional space to which a line of sight coming from the viewpoint falls; a point coordinate calculating means for obtaining coordinates of a point on the selected object; Point projection means for projecting the point on a two-dimensional screen in accordance with the shape of the object at the coordinates of.

According to a fourth aspect of the present invention, in the third aspect, the object selecting means includes means for designating a viewpoint coordinate of the viewpoint in a three-dimensional space, and a point on which a point is displayed.
Means for obtaining point coordinates in a three-dimensional space of points on the two-dimensional screen when the two-dimensional screen is placed in a three-dimensional space; means for obtaining a vector from the viewpoint coordinates to the point coordinates; Means for finding all objects that intersect with the extended vector when extended in the direction of the vector; and
Means for selecting an object closest to the point coordinates.

The invention described in claim 5 is the invention according to claim 3 or 4.
In the above, when the shape of the object at the coordinates of the calculated point is planar, the point projecting means is configured to display a point on the two-dimensional screen in accordance with an angle between the plane and the two-dimensional screen. Can be displayed.

The invention according to claim 6 is the invention according to claim 1 or 2.
In the above, the view display means may display a new view on the two-dimensional screen when the point is moved in the three-dimensional space while the viewpoint is fixed.

According to a seventh aspect of the present invention, in the sixth aspect, the view display means can not display a new view while the point is moving within a predetermined range in a three-dimensional space. .

The invention described in claim 8 is the first or second invention.
In the above, the view display means may display a new view on the two-dimensional screen when the point is fixed and the viewpoint is moved in a three-dimensional space.

According to a ninth aspect of the present invention, in the ninth aspect, the image display device further includes a forward instructing device, and the visual field display means advances to a fixed point by an instruction from the forward instructing device. 2 new views in case
It can be displayed on a three-dimensional screen.

According to a tenth aspect of the present invention, in accordance with the eighth aspect, the image display device further comprises a retreat instructing device, and the view display means retreats to a fixed point by an instruction from the retreat instructing device. 2 new views in case
It can be displayed on a three-dimensional screen.

According to an eleventh aspect of the present invention, in the eighth aspect, the view display means displays a new view on a two-dimensional screen when the viewpoint is moved on a circumference around a fixed point. Can be displayed.

According to a twelfth aspect of the present invention, in the eleventh aspect, the visual field display means may include an angle formed by a straight line connecting the fixed point and the viewpoint before the movement to a straight line connecting the point and the viewpoint after the movement. Can be compared with a predetermined angle, and if the angle is larger than the predetermined angle, it can be moved on the circumference by the predetermined angle.

According to a thirteenth aspect of the present invention, in the first or second aspect, the view display means displays a new view on the two-dimensional screen when the point and the viewpoint are simultaneously moved in a three-dimensional space. Can be displayed.

According to a fourteenth aspect of the present invention, in any one of the sixth to thirteenth aspects, when there is an obstacle between the viewpoint and the point, the view display means sets the view to avoid the obstacle by two. It can be displayed on a three-dimensional screen.

According to a fifteenth aspect of the present invention, in the fourteenth aspect, the viewpoint moves on a passage in a three-dimensional space, and the obstacle is located on the passage.

According to a sixteenth aspect of the present invention, in the fifteenth aspect, the viewpoint can avoid avoiding the obstacle.

According to a seventeenth aspect of the present invention, in the fourteenth aspect, the obstacle has a hole-like shape, and the viewpoint can be avoided from descending into the hole-like obstacle and rising.

The invention according to claim 18 is the invention according to claim 17, wherein the hole-shaped obstacle has an elevating means connecting the edge of the hole and the bottom of the hole, and when the viewpoint reaches the elevating means. It is possible to avoid raising and lowering using the lifting means.

According to a nineteenth aspect of the present invention, in any one of the fourteenth to eighteenth aspects, the obstacle can move in a three-dimensional space.

According to a twentieth aspect of the present invention, in any one of the first to nineteenth aspects, the three-dimensional space can be an underwater space.

According to a twenty-first aspect of the present invention, in any one of the first to nineteenth aspects, the three-dimensional space can be a space.

[0029] The invention according to claim 22 is a view display step of displaying a view seen from a viewpoint in a three-dimensional space on a two-dimensional screen, and a step of setting a point at which a line of sight coming from the viewpoint hits an object in the three-dimensional space. An image display method comprising: a point display step of superimposing and displaying a view on a two-dimensional screen on which a field of view is displayed; and a point moving step of moving the point in a three-dimensional space. This is an image display method for displaying a new field of view accompanying a movement in a three-dimensional space on a two-dimensional screen.

According to a twenty-third aspect of the present invention, in the twenty-second aspect, the point displaying step includes an object selecting step of selecting an object in a three-dimensional space to which a line of sight coming from the viewpoint falls, and a point on the selected object. And a point projecting step of projecting the point on a two-dimensional screen according to the shape of the target at the calculated coordinates of the point.

According to a twenty-fourth aspect of the present invention, in the twenty-second aspect, the view display step includes, on the two-dimensional screen, a new view when the viewpoint is fixed and the point is moved in a three-dimensional space. Can be displayed.

According to a twenty-fifth aspect of the present invention, in the twenty-second aspect, the view display step includes, on the two-dimensional screen, a new view when the point is fixed and the viewpoint is moved in a three-dimensional space. Can be displayed.

According to a twenty-sixth aspect of the present invention, in the twenty-second aspect, the view display step displays a new view on the two-dimensional screen when the point and the viewpoint are simultaneously moved in a three-dimensional space. be able to.

According to a twenty-seventh aspect of the present invention, in any one of the twenty-second to twenty-sixth aspects, the visual field display step includes a two-dimensional visual field for avoiding the obstacle when there is an obstacle between the viewpoint and the point. It can be displayed on the screen.

According to a twenty-eighth aspect of the present invention, there is provided a computer-readable recording medium having recorded thereon a program for executing the image display method according to any one of the twenty-second to twenty-second aspects.

[0036]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In the embodiment described below,
A view seen from a viewpoint in a three-dimensional space, for example, a virtual three-dimensional space (hereinafter, simply referred to as “three-dimensional space”) used in a game or the like is displayed on a two-dimensional screen. The field of view display processing unit that performs this display performs various processes that are widely known as a three-dimensional computer graphics generation method. This process includes, for example,
View transformation, projective transformation, viewport transformation, Shoko processing, anti-aliasing
Processing or texture mapping
) Processing. The visibility display processing unit generates two-dimensional bitmap data, and displays a final two-dimensional image on a two-dimensional screen based on the two-dimensional bitmap data.

FIG. 45 is a functional block diagram showing an embodiment of the image display device of the present invention.

In FIG. 45, a program or data has been written on an information recording medium 7100. These programs or data are supplied to the processing device CP via an I / O control unit 7400 for controlling input / output in an internal circuit 7000 of the game machine connected to the information recording medium 7100.
It is stored in the RAM 7200 by U7500. RAM
7200 is connected to the processing device CPU 7500.
The processing device CPU 7500 uses the programs or data stored in the RAM 7200 to execute the following embodiments. RAM7200 is CPU75
It is also used as a work area during 00 execution. CPU75
Data necessary for other processing such as initialization of the internal circuit 7000 is stored in the read-only device ROM 7300 connected to 00. A VRAM 7600 is a memory used as an image memory.
7500, and the other terminal is connected to an image control unit 7 described later.
900. In the VRAM 7600, an image control unit 7900 periodically stores an image display unit 7 such as a monitor screen.
Data used when scanning 910 is stored. Specifically, the VRAM 7600 includes an image display unit 791
0 has a capacity corresponding to the data capacity of one screen. Therefore, every time the viewpoint is changed, the CPU 75
The contents of the VRAM 7600 are rewritten in an appropriate cycle of 00. The image control unit 7900 includes a VRAM 7600
Is converted into image data and sent to the image display unit 7910. The image display unit 7910 is a display such as a monitor screen or a TV as described above,
An image is displayed based on the image data sent from the image control unit 7900. The operator of the game machine (not shown) is C
An operation can be performed by the operation unit 7930 via an I / O control unit 7800 that controls input and output connected to the PU 7500. The operation unit 7930 has various operation buttons or levers. Audio can be output by the audio output unit 7920 via an audio synthesizer 7700 that synthesizes audio and is connected to the CPU 7500.

FIG. 46 is a conceptual diagram showing an embodiment of the image display device of the present invention.

Referring to FIG. 46, the internal circuit 70 of the game machine
The game machine 8300 including the display 8910 and the cable 8
500. On display 8910, a virtual three-dimensional space 8700 and points 8600 described later are displayed. The game machine 8300 further includes an operation machine 893 which is an embodiment of the operation unit 7930.
0 and a cable 8400. Operating device 8
930 is a point 8600 on the display 8910
Lever 8000 to move, virtual three-dimensional space 87
It has a lever 8100 for moving inside 00 and an action button 8200 for causing various actions in a virtual three-dimensional space 8700. The game machine 8300 is a CD-ROM as an embodiment of the information recording medium 7100.
And the like for setting the position. The set position 8350 is covered with a lid, and the lid can be opened and closed by pressing the lid after setting the CD-ROM or the like by opening / closing a button (not shown). Although the audio output unit 7920 is not shown in FIG. 46, it can be provided on the display 8910 or the game machine 8300.

(Embodiment 1) FIGS. 2 and 3 show Embodiment 1 of the image processing method of the present invention. FIG. 2 shows a three-dimensional space, and FIG. 3 shows a flowchart of an image processing method in the three-dimensional space.

In FIG. 2, world coordinates 270 are three-dimensional coordinates X, Y and Z in a three-dimensional space.
Camera 200 showing viewpoint, two-dimensional screen 28
5, a polygon C250 and a polygon E260, which are three-dimensional solids, exist in this three-dimensional space (hereinafter, an object such as a polygon in a three-dimensional space is also simply referred to as an "object" or an "object"). The screen coordinates 280 are two-dimensional coordinates x and y on the screen 285.
Cursor A287 is a polygon C250 in a three-dimensional space.
A point where the upper point D240 is projected on the screen 285 is shown.

FIG. 3 shows a process for calculating an intersection D240 between the cursor A287 and the object (the polygon C250 in the example of FIG. 2) in FIG. In the initial state, the cursor A 287 is, for example, at the center of the screen 285. However, this is only an example, and it is needless to say that it may be located at the upper left instead of the center. FIG.
In the flowchart of FIG.
An intersection D240 is determined from the position of the camera 200 and the position of the camera 200 and the like.

First, the world coordinates (Xc, Yc, Zc) of the camera 200 as the viewpoint and the angle θ thereof are specified (step S300). As the angle θ, the angle formed by the line of sight of the cursor A 287 from the camera 200 with respect to the ground can be taken. In the case of this angle, it can be considered from vertical (looking right below) to horizontal. As another method of setting the angle, the angle formed by the line of sight of the cursor A 287 from the camera 200 and the screen 285 can be set.

The cursor A28 on the screen 285
7 (Xa, Ya, Za) are calculated (step S310). As an initial value, the screen coordinates 280 (xa, y) at the center of the screen 285 are set as described above.
a) can be taken. The screen coordinates 280
World coordinates (Xa, Ya, Za) from (xa, ya)
Is calculated. For example, Xa = xa, Ya = ya, Za =
It can also be const. (an appropriate constant).

Viewpoint of camera 200 (Xc, Yc, Zc)
Then, a vector B210 heading from to the cursor A 287 (Xa, Ya, Za) is calculated (step S320). The vector B210 is extended in that direction, and a hit check is performed to determine whether or not the extended vector B210 intersects with each of the objects arranged on the world coordinates 270, such as the polygon C. Of all the objects determined to intersect, the camera 200 that is the most viewpoint
Is selected (step S330).
In the example of FIG. 2, this object is a polygon C250. An intersection D240 between the extended vector B210 and a selected object, for example, a polygon C250, is determined (step S340).

Once the intersection D240 is obtained, the cursor A287 is moved by an external instruction input from then on, so that the intersection D240 of the new position can be similarly obtained from the cursor 287 of the new position and the camera 200. .

(Embodiment 2) FIGS. 4 and 5 show Embodiment 2 of the image processing method of the present invention. FIG. 4 shows a three-dimensional space, and FIG. 5 shows a flowchart of a forward or backward processing method in the three-dimensional space. The forward or backward instruction is given by an external input, for example, from a direction key.

FIG. 4 shows an image processing method after the point D240 has already been obtained by the image processing shown in FIGS. In FIG. 4, portions denoted by the same reference numerals as those in FIG. 2 have the same functions, and thus description thereof will be omitted.

In FIG. 5, the camera 200 serving as the viewpoint is moved from the original position to the extended vector B21 described in FIG.
A point I445 moved in the 0 direction is calculated (step S44).
500). Advance 4 from the original camera position to point I445
40 is determined (step S).
510) If it is determined that it is possible, the viewpoint of the camera 200 is advanced 440 from the original position to the point I445 (step S520). If there is no left and right movement only by forward movement (step S530), the position of the cursor A287 is gradually moved to the center of the screen 285 (step S540). The speed of this movement can be set arbitrarily. The reason why the cursor A287 is moved to the center of the screen 285 is that, generally, the position of the cursor A287 on the screen is not always at the center.
This is because the cursor A 287 is moved to the center of the screen again when the point approaches the point D 240 in the three-dimensional space by the forward movement 440. For example, when the camera 200 is at the position of the point J425, when the user moves forward on the vector 480, the position of the cursor A288 on the screen 487 moves to the center of the screen 487. After this the camera 20
The necessary angle of 0 is reset (step S550).

If it is not possible to move to the point I445 in step S510, the forward process is not executed. In this case as well, if there is some room to move forward, it can be moved to a position where it can move forward. Further, the image is made to collide with the polygon C250 where the point D240 exists,
For example, it is possible to display vibration of the polygon C250, destruction of a part of the polygon C250, and the like.

If the left and right movement is also performed in step S530, the left and right movement processing shown in FIG. 6 is performed.
No further processing is performed in the flowchart shown in FIG.

Although the description has been given of the forward movement, the camera 200 only moves backward 400 from the original position for the backward movement, and the processing of the backward movement can be similarly realized.

Third Embodiment FIGS. 4 and 6 show a third embodiment of the image processing method of the present invention. FIG. 4 shows a three-dimensional space, and FIG. 6 shows a flowchart of a method for processing left and right movement in the three-dimensional space. The instruction to move left and right is given by input from an external, for example, direction key.

In FIG. 4, a point J 425 is located on a circle around the point D 240 (indicated by an arc 450).
Shows the position that becomes the viewpoint when the image is moved 420 to the right. On a vector 480 from point J425 to point D240, there is a screen 487 as viewed from point J425. Similarly, a point H435 indicates a position serving as a viewpoint when the camera 200 is moved 430 leftward on a circle around the point D240. On a vector 470 from point H435 to point D240, there is a screen 437 as viewed from point H435.

In FIG. 6, the distance E from the point D240 to the position of the camera 200 serving as the viewpoint is calculated (step S600). An arc F450 having a radius of E is drawn from the original position of the camera 200 to a point H435. An angle G460 formed by the extended vector B210 and the vector 470 described in FIG. 2 is calculated (step S610). The angle G460 is compared with a predetermined angle α (step S6).
20). When the angle G460 is larger than the angle α, the angle α is used as the angle G (Step S630).

If the moving speed of the camera 200 on the arc F450 is constant, if the distance E is relatively short, the camera 200 rotates around the point D240 at a relatively high speed. It is considered that it becomes difficult to capture. Therefore, the angle α is determined as the maximum angle at which a change in the screen is easily captured. Of course the distance E
, The angular velocity can be changed in accordance with the equation (1), and when the distance E is relatively short, the angular velocity can be reduced. Further, it is also possible to change the angular velocity of the movement on the arc F450, to move slowly when starting and ending the movement, and to move early during the movement.

A point H43 where the camera 200 has moved by the arc F450 on the circumference of the radius E centered on the point D240.
5 is calculated (step S640). It is determined whether the camera 200 can move from the original position to the point H435 (step S650). If it is determined that the camera 200 can move, the camera 200 is moved from the original position to the point H435. At the same time, the horizontal angle of the camera is rotated by the angle G (step S660).

If it is determined that movement is not possible, left / right movement is not performed. However, it goes without saying that, similarly to step S510 described above, it is possible to move to a position where it can be moved, to display images that have collided with the left and right walls, and the like. In the above description, the arc 45 is mainly used.
Although the description of the left movement 430 to 0 has been described, the right movement 4
Needless to say, the same operation can be performed in the case of 20.

FIGS. 7 to 38 illustrate the image processing method of the present invention more specifically on a screen.

(Embodiment 4) FIGS. 7 to 14 show a case where a T-turn in a three-dimensional space is turned right, and a cursor A 287 on a screen 285 in FIGS. 2 and 4 is shown.
Is displayed as a point 700 where light gathers when illuminated by a flashlight or the like, for example. Point 70
0 is the point that the viewpoint of the camera 200 is currently focusing on,
Intersection D where the line of sight from the camera 200 intersects the object
240 is shown. The T-shaped road is surrounded by a passage and a wall, and the current passage is indicated by a passage 710, the end of the passage is indicated by a wall 720, and the passage turning right is indicated by a passage 730. Instructions such as forward or rightward movement in a T-junction are given by input from an external, for example, direction key.

The point 700 is displayed on the wall 720 near the point. The shape of the point 700 changes depending on the shape of the wall on which the point 700 is displayed. For example, when the camera 200, which is the viewpoint, is directly facing the wall 720, the shape of the point 700 is displayed in a substantially perfect circle. Depending on the angle of the camera 200 with respect to the wall, the shape of the point 700 is displayed as an ellipse or the like. In the fourth embodiment to the seventh embodiment described below, the shape of the point is a circle or an ellipse for the purpose of explanation, but this is merely for the purpose of explanation, and any shape other than the circle or its shape may be used. Of course, a deformed shape may be used.

FIG. 8 shows a case where the camera 200 as the viewpoint moves forward from the state of FIG.

FIG. 9 shows a state in which the point 700 is further turned forward than the state of FIG. 8 and the point 700 is turned to the right. Point 7
In order to represent the movement of 00, point 7 in FIG.
00 indicates a state of moving from the wall 720 to the wall 750.

FIG. 10 shows a state in which the T-junction is further turned to the right from the state of FIG. Wall 750 is shown larger.

FIG. 11 shows a state in which the T-shaped intersection is further turned to the right from the state of FIG. The point 700 is displayed as an ellipse rather than a circle. The wall 750 is the camera 200
This is a display method corresponding to the fact that the image looks slightly oblique when viewed from above. As described above, the point 700 is not always displayed as a perfect circle, but is displayed with an appropriately changed shape according to the shape of the object to which the point is applied.

FIG. 12 shows a state in which the vehicle has run around a substantially T-shaped road.

FIG. 13 shows a point 70 on the back wall 800.
0 indicates that it is displayed while moving. As described above, not only the points are displayed while changing the shape, but also a trace of light is appropriately displayed to express the movement.

FIG. 14 shows a state in which a right turn on a T-junction has been completed. The point 700 on the back wall 800 is displayed as a perfect circle.

By giving a timely instruction from the direction key or the like as described above, it is possible to make a right turn with a free spline different from the method along the fixed spline for turning right.

As described above, while moving the point to the right, for example, the viewpoint itself moves forward and turns right at the same time, the point and the viewpoint are moved at the same time, so that a smooth movement very similar to the actual movement can be achieved. It is possible to display.

Further, even when the point is moved rightward, for example, the field of view does not have to be changed immediately according to the movement of the point. A predetermined frame is set in the field of view, and when the point is moving within this frame, the field of view itself is not changed. However, it is also possible to change the field of view so that if a point attempts to move beyond this frame, it will be pulled by that movement.

(Embodiment 5) FIGS.
It shows a case in which a person looks up at the ceiling after turning left in a passage in a three-dimensional space. The instruction to look up can be given by an external key input or the like.

FIG. 15 shows the left passage from the current passage, with point 700 being on the right wall 850 of the left passage.

FIG. 16 shows a case where the user approaches the passage on the left side of FIG. 15, and shows that the point 700 is moving on the wall 850 toward the back wall.

FIG. 17 shows a state in which the vehicle has reached the passage on the left side further than FIG. 16, and shows that the point 700 is moving on the back wall 880.

FIG. 18 shows that point 700 is on the back wall.

FIG. 19 shows a state where the user has started to look upward gradually, and shows that the point 700 is moving on the wall 880 toward the ceiling where the point gradually becomes visible.

FIG. 20 shows a ceiling wall 90 that has been further seen.
The point 700 on 0 is shown.

FIG. 21 further shows that the ceiling wall 900 has become clearly visible.

FIG. 22 shows a state where the user is looking up almost right above.

As described above, it is possible to move the point not only in the left and right directions but also in the upward direction.

(Embodiment 6) FIGS.
A case is shown in which a person looks down a hole after moving forward in a passage in a three-dimensional space. The instruction to look down is given by, for example, a key input from the outside.

FIG. 23 shows a point 700 on the back wall 920.
And there is a hole 940 in the passage under the wall 920.

FIG. 24 shows a state where the robot has advanced toward the inner wall 920.

FIG. 25 shows a state in which the hole 940 has become larger in the passage 930 than the state shown in FIG. Point 700 is shown visible on passage 930 between wall 920 and hole 940.

FIG. 26 shows a state in which the point 700 has approached the edge of the hole 940.

FIG. 27 shows that the wall 950 in the hole is gradually seen closer to the hole 940, and the point 700
Is on the wall 950 of the hole.

FIG. 28 shows a state in which the hole 940 is further looked down.

FIG. 29 shows that the hole 940 is further looked down, and the bottom 960 of the hole is visible.

FIG. 30 shows a state in which the bottom 960 of the hole is almost looked down. Point 700 is at the bottom 960 of the hole.

As described above, the point can be moved not only in the left and right and upward directions but also in the downward direction. Further, it is also possible to move the viewpoint itself in a downward direction according to an instruction from a key input.

(Embodiment 7) FIG. 31 to FIG.
The figure shows a case in which the user moves sideways while looking at one point in a passage in the three-dimensional space. This exemplifies the third embodiment.

FIG. 31 shows a point 700 on a passage 970.
Is fixed, and a hole 975 is in front of the hole wall 98.
The state displayed together with 0 and 985 is shown. Less than,
A case in which the user moves to the left while looking at the fixed point 700 is shown.

FIG. 32 shows a state where it has moved to the left from FIG.

FIG. 33 shows a state in which it is further turned to the left.

FIG. 34 is a diagram showing a state in which the wrapper is further turned to the left and
5 shows a state in which the wall 980 and the wall 985 of FIG.

FIG. 35 shows a state in which it has turned further to the left than in FIG.

FIG. 36 shows that the wrapping is further turned to the left,
5 shows a state in which the wall 990 of FIG.

FIG. 37 is a diagram showing a further turning to the left,
5 shows a state in which the fifth wall 980 has disappeared.

FIG. 38 shows a state in which it has almost gone around the hole 975 and is on the side opposite to the initial position.

(Embodiment 8) FIGS. 39 and 40 show
This shows a case where an obstacle on a passage is avoided. In each case, only the movement of the viewpoint is shown, but the actual screen on the screen is shown in the same manner as in FIGS. 7 to 38 described above.

FIG. 39 shows avoidance over a convex obstacle. In FIG. 39, a convex obstacle 1 is used as the obstacle.
300 and 1400 are shown, and the viewpoint is, for example, the viewpoint 1000 without the viewpoint 1000 of the player character in the game.
It is indicated at 200. Obstacle 1 where viewpoint 1000 is convex
When you advance toward 300 by key input or the like,
On an actual screen, a convex obstacle 1300 or 1400
A screen for moving forward toward the point displayed in is displayed. At the viewpoint 1010, a screen that looks down on the lower convex obstacle 1300 is displayed, and the point is also displayed at the position that looks down. At the viewpoint 1020, a convex obstacle 1300
When you get on the top, you will see a little looking down. In the viewpoint 1100, the point is a convex obstacle 140
It is displayed on 0 or a back object (not shown). From the viewpoint 1110 to the viewpoint 1120, a convex obstacle 1
The state of riding 400 is displayed together with points. The viewpoint 1200 displays a state where the viewpoint 1200 is on a convex obstacle 1400.

The instruction to climb up an obstacle may be given by continuously inputting an instruction to move forward, or may be separately input by inputting an upward key.

FIG. 40 shows the avoidance of getting down and over a concave obstacle.

In FIG. 40, concave obstacles 2410 and 2430 are shown as obstacles.
2420 and 2440 are shown. The viewpoint is shown as, for example, a viewpoint 2300 without the viewpoint 2000 of the player character in the game. FIG. 40 also shows only the movement of the viewpoint 2000 as in FIG. 39, but the point and the field of view from the viewpoint 2000 and the like are displayed on the actual screen. 39 is different from FIG. 39 in that the obstacles are concave, so that they once descend on the concave obstacles 2410 and 2430 and then climb up the respective passages 2420 and 2440 again. Therefore, on the actual screen, for example, a state of looking down on the concave obstacle 2410 and a state of riding on the passage 2420 are displayed together with points. The concave obstacle 2430 is deeper than the
When looking down, the bottom point is displayed smaller than in the case of the edge viewpoint 2010.

The instruction to descend on the obstacle may be given by continuously inputting a forward instruction or may be separately input by a down key.

In this embodiment, the obstacle is fixed. However, this is merely an example, and it goes without saying that the present invention can be applied even when the obstacle itself is moving. . If the obstacle is moving, you can move over the obstacle by moving the point over the moving obstacle and pressing the forward button. is there.

(Embodiment 9) FIGS. 41 and 42 show
Shows the case of moving underwater. In the above embodiment, the point could be moved in all directions in the three-dimensional space, but the viewpoint itself could only be moved on land. However, underwater, the viewpoint itself can be moved in all directions of the viewing direction. Although only the movement of the viewpoint is displayed in FIGS. 41 and 42, the field of view from the viewpoint and the point are displayed on the actual screen. For example, at the viewpoint 3100, a water bottom 3700 and a point are displayed in the field of view.

In FIG. 41, the viewpoint 3000 is initially at the position of the water bottom 3600. On land, it will descend to the water bottom 3700, but by moving like swimming in the water, it is possible to move from the viewpoint 3000 to the viewpoint 3500. An instruction to move underwater can also be input by giving an instruction to move a point up, down, left, or right. For example, at the position of the viewpoint 3200, the point is displayed on the water bottom 3700, but by giving an instruction to move the point further down on the screen,
It can be rotated from the position of the viewpoint 3200 to the position of the viewpoint 3400 through the position of the viewpoint 3300.

FIG. 42 shows that there are convex obstacles 4550 and 4600 on the water bottom 4500 and there is also a convex obstacle 4650 from the water surface 440. Viewpoint 40
00 swims in the water and moves from viewpoint 4000 to viewpoint 410
Water surface 440 through locations 0, 4200 and 4300
Can move to zero. The movement in this case does not follow a fixed spline, but can be moved in all directions by an instruction such as key input. In the present embodiment, underwater was described as an example. However, this is merely for illustration and may be in outer space or the like as long as it can move in all directions.

(Embodiment 10) FIG. 43 shows an embodiment of a use section for processing the use of an object in a three-dimensional space. FIG. 43 particularly shows a case where the user moves up and down using a lifting tool such as a ladder which is an object in a three-dimensional space.
Although only the movement of the viewpoint is displayed in FIG. 43, the field of view from the viewpoint and the point are displayed on the actual screen.

In FIG. 43, the viewpoint 5000 is initially in the passage 5910. The use unit that processes the use of the object in the three-dimensional space is configured such that an external action button or the like is pressed at the position of the viewpoint 5100, and the ladder 5940 is used.
And change the direction like the viewpoint 5110. The field of view and points on the screen also change accordingly. By giving an instruction in the downward direction, the viewpoint 5200 to the viewpoint 5300
Get off until. At the position of the viewpoint 5300, when the external unit, for example, an action button or the like is pressed,
Release the ladder 5940 and turn so that it can move on the passage 5920. The field of view and points on the screen also change accordingly. At the position of the viewpoint 5600, the use unit grasps the ladder 5950 and changes the direction to the viewpoint 5700 by pressing an external action button or the like. The field of view and points on the screen also change accordingly. By giving an upward direction, the viewpoint 5700
To the viewpoint 5800. At the position of the viewpoint 5810, the use part turns so that the ladder 5950 can be released and moved on the passage 5930 by pressing an external action button or the like. The field of view and points on the screen also change accordingly. As described above, in addition to instructing the movement of right and left and up and down, when the point is on the object, grasp the object,
Or let it go.

In the above description, the use unit grasps or releases the ladder 5940 or the like by pressing the external action button.
Ladder 5940 automatically when it reaches a position such as 100
Can be used.

(Embodiment 11) FIG. 44 shows another embodiment of the use section for processing the use of an object in a three-dimensional space. FIG. 44 shows a case where an object in a three-dimensional space such as a switch is used. In FIG. 44 as well, only the movement of the viewpoint is displayed, but the field of view from the viewpoint and the point are displayed on the actual screen.

In FIG. 44, the position is advanced from the position of the viewpoint 6000 to the position of the object 6300 (switch). At the position of the viewpoint 6100, the use unit determines that the B point is the object 63 on the object 6300 (switch).
When an external action button, for example, is pressed while the object 6350 is on the lever, the object 6350
(Lever), and an operation such as turning on / off the object 6300 (switch) can be performed. The object 6350 (lever) can be released again by pressing an external action button, for example.

In the above description, when the external action button is depressed, the used part is set to the object 6350
(Lever) or the like, and an operation such as turning on / off the object 6300 (switch) is performed. However, when the position of the viewpoint 6100 or the like is reached without operation from the outside, the object 6350 (switch) is automatically set. It is also possible to use a lever or the like.

In this way, the point can be moved on a usable object, and the object can be used automatically or by an instruction using an external action button or the like. The type of use is not limited to grasping, releasing, grasping, or performing operations such as on / off. For example, a panel showing a list of a plurality of “use” types is displayed on an arbitrary object, and a point is moved to one of “use” on the panel, and then, for example, an external action button or the like is pressed. Thereby, a plurality of uses can be performed.

As described above, the recording medium storing the computer program for realizing the functions of the above-described embodiment is supplied to the image display device, and the computer of the image display device stores the computer program stored in the recording medium. It is needless to say that the object of the present invention is also achieved by reading and executing.

In this case, the computer program itself read from the recording medium realizes the novel function of the present invention, and the recording medium on which the computer program is recorded constitutes the present invention.

As the recording medium on which the computer program is recorded, for example, a CD-ROM, a floppy disk, a hard disk, a ROM, a memory card, an optical disk and the like can be used.

[0123]

As described above, according to the image display device, the image display method, and the recording medium of the present invention, a point at which the line of sight from the viewpoint intersects with the object is displayed on the two-dimensional screen by superimposing on the field of view Provided are an image display device, an image display method, and a recording medium that can move a viewpoint and a point freely in a three-dimensional space to move to an arbitrary position in the three-dimensional space and display the field of view. be able to.

[Brief description of the drawings]

FIG. 1 is a diagram showing a virtual three-dimensional space of a conventional game or the like.

FIG. 2 is a diagram illustrating a three-dimensional space.

FIG. 3 is a flowchart of an image processing method in a three-dimensional space.

FIG. 4 is a diagram illustrating a three-dimensional space.

FIG. 5 is a flowchart of a forward or backward processing method in a three-dimensional space.

FIG. 6 is a flowchart of a method for processing left and right movement in a three-dimensional space.

FIG. 7 is a diagram showing a right turn on a T-junction in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 8 is a diagram showing a right turn on a T-junction in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 9 is a diagram showing a right turn on a T-junction in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 10 is a diagram showing a right turn on a T-junction in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 11 is a diagram showing a right turn on a T-junction in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 12 is a diagram showing a right turn on a T-shaped intersection in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 13 is a diagram showing a right turn on a T-shaped intersection in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 14 is a diagram showing a right turn on a T-junction in a three-dimensional space according to Embodiment 4 of the present invention.

FIG. 15 is a diagram showing movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 16 is a diagram illustrating movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 17 is a diagram showing movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 18 is a diagram illustrating movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 19 is a diagram showing movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 20 is a diagram illustrating movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 21 is a diagram illustrating movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 22 is a diagram illustrating movement of points when looking up at a ceiling after turning left in a passage in a three-dimensional space according to Embodiment 5 of the present invention.

FIG. 23 is a diagram showing movement of points when looking down a hole after advancing in a path in a three-dimensional space according to the sixth embodiment of the present invention.

FIG. 24 is a diagram illustrating movement of points when looking down a hole after advancing in a path in a three-dimensional space according to the sixth embodiment of the present invention.

FIG. 25 is a diagram showing movement of points when looking down a hole after advancing in a path in a three-dimensional space according to Embodiment 6 of the present invention.

FIG. 26 is a diagram illustrating movement of points when looking down on a hole after advancing in a path in a three-dimensional space according to Embodiment 6 of the present invention.

FIG. 27 is a diagram showing movement of points when looking down a hole after advancing in a path in a three-dimensional space according to the sixth embodiment of the present invention.

FIG. 28 is a diagram illustrating movement of points when looking down a hole after advancing in a path in a three-dimensional space according to the sixth embodiment of the present invention.

FIG. 29 is a diagram illustrating movement of points when looking down a hole after advancing in a path in a three-dimensional space according to the sixth embodiment of the present invention.

FIG. 30 is a diagram illustrating movement of points when looking down a hole after advancing in a path in a three-dimensional space according to Embodiment 6 of the present invention.

FIG. 31 is a diagram illustrating a movement of a point when moving sideways while continuing to look at a point in a passage in a three-dimensional space according to the seventh embodiment of the present invention.

FIG. 32 is a diagram illustrating a movement of a point when moving sideways while continuing to look at a point in a passage in a three-dimensional space according to the seventh embodiment of the present invention.

FIG. 33 is a diagram illustrating movement of a point when moving sideways while continuing to look at a point in a path in a three-dimensional space according to the seventh embodiment of the present invention.

FIG. 34 is a diagram illustrating movement of a point when moving sideways while continuing to look at a point in a passage in a three-dimensional space according to the seventh embodiment of the present invention.

FIG. 35 is a diagram illustrating movement of a point when moving sideways while continuing to look at a point in a passage in a three-dimensional space according to the seventh embodiment of the present invention.

FIG. 36 is a diagram illustrating movement of a point in the case where the user moves sideways while continuing to look at one point in a path in a three-dimensional space according to Embodiment 7 of the present invention.

FIG. 37 is a diagram illustrating movement of a point in a case where the user moves sideways while continuing to look at one point in a path in a three-dimensional space according to Embodiment 7 of the present invention.

FIG. 38 is a diagram illustrating a movement of a point when moving sideways while continuing to look at a point in a path in a three-dimensional space according to the seventh embodiment of the present invention.

FIG. 39 is a diagram showing a movement of a viewpoint when avoiding an obstacle on a passage in a three-dimensional space according to the eighth embodiment of the present invention.

FIG. 40 is a diagram illustrating movement of a viewpoint when avoiding an obstacle on a passage in a three-dimensional space according to the eighth embodiment of the present invention.

FIG. 41 is a diagram illustrating movement of a viewpoint when moving in water according to Embodiment 9 of the present invention.

FIG. 42 is a diagram illustrating movement of a viewpoint when moving in water according to Embodiment 9 of the present invention.

FIG. 43 is a diagram illustrating movement of a viewpoint when the user moves up and down with a lifting tool such as a ladder in a three-dimensional space according to Embodiment 10 of the present invention.

FIG. 44 is a diagram illustrating movement of a viewpoint when using an object such as a switch in a three-dimensional space according to Embodiment 11 of the present invention.

FIG. 45 is a functional block diagram showing an embodiment of the image display device of the present invention.

FIG. 46 is a conceptual diagram showing an embodiment of the image display device of the present invention.

[Explanation of symbols]

100, 200 Camera 105 Intersection 110, 120, 130, 140 Moving path 115, 125, 135, 145 Moving spline 127 Obstacle 137, 940, 975 Hole 150, 160, 250, 260 Polygon 170, 270 World coordinates 180, 280 Screen Coordinates 185, 285, 437, 447, 487 Screen 187, 287 Cursor 210 Vector 240, 425, 435, 445 points 460 Angle 700 points 710, 730, 930, 970, 2400, 242
0, 2440, 5910, 5930 Passage 720, 750, 800, 850, 880, 900, 9
20, 940, 980, 985, 990 Wall 1000, 2000, 3000, 4000, 5000
Viewpoint 1300, 1400 Convex obstacle 2410, 2430 Concave obstacle 3650, 4700 Water surface 3600, 3700, 4500 Water bottom 4550, 4600, 4650 Underwater obstacle 5940, 5950 Ladder 960, 5920 Hole bottom 6300 Switch 6350 Lever 7000 CPU 7100 Information recording medium 7200 RAM 7300 ROM 7400, 7800 I / O control unit 7600 VRAM 7700 Voice synthesizer 7900 Image control unit 7910 Image display unit 7920 Voice output unit 7930 Operation unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C001 AA00 AA09 BA00 BA02 BA05 BC00 BC10 CB01 CB06 CC02 5B050 AA10 BA07 BA08 CA07 EA12 EA27 EA28 FA02 FA09 FA16

Claims (28)

[Claims] 1. A view seen from a viewpoint in a three-dimensional space is defined as 2
View display means for displaying on a two-dimensional screen, point display means for displaying a point at which a line of sight from the viewpoint hits an object in a three-dimensional space on a two-dimensional screen on which the view is displayed, An image display device comprising: a point moving unit that moves in a three-dimensional space, wherein the view display unit displays a new view accompanying the movement in the three-dimensional space on a two-dimensional screen. Image display device. 2. The image display device according to claim 1, wherein
An image display device further comprising a use unit that uses an object in the three-dimensional space. 3. The image display device according to claim 1, wherein said point display means comprises: an object selecting means for selecting an object in a three-dimensional space to which a line of sight coming from said viewpoint falls; An image display apparatus comprising: point coordinate calculating means for obtaining coordinates of a point; and point projecting means for projecting the point on a two-dimensional screen according to the shape of the target at the calculated coordinates of the point . 4. The image display device according to claim 3, wherein
The object selecting means includes: means for designating viewpoint coordinates of the viewpoint in a three-dimensional space; and, when a two-dimensional screen on which a point is displayed is placed in the three-dimensional space, a three-dimensional space of the point on the two-dimensional screen. Means for obtaining point coordinates in; and means for obtaining a vector directed from the viewpoint coordinates to the point coordinates. When the vector is extended in the direction of the vector,
An image display device comprising: means for obtaining all objects that intersect with an extended vector; and means for selecting an object closest to the point coordinates among all the objects. 5. The image display device according to claim 3, wherein the point projecting means, when the shape of the object at the calculated coordinates of the point is a plane, the plane and the two-dimensional screen. An image display device for displaying a shape of a point on the two-dimensional screen in accordance with an angle between the point and the point. 6. The image display device according to claim 1, wherein the view display means displays a new view on a two-dimensional screen when the viewpoint is fixed and the point is moved in a three-dimensional space. An image display device characterized in that an image is displayed on the image display device. 7. The image display device according to claim 6, wherein
The image display device, wherein the view display means does not display a new view while the point is moving within a predetermined range in a three-dimensional space. 8. The image display device according to claim 1, wherein the view display means displays a new view on the two-dimensional screen when the point is fixed and the viewpoint is moved in a three-dimensional space. An image display device characterized in that an image is displayed on the image display device. 9. The image display device according to claim 8, wherein
The image display device may further include a forward instructing device, and the visual field displaying means may display a new visual field on a two-dimensional screen when the vehicle advances to a fixed point by an instruction from the forward instructing device. Image display device. 10. The image display device according to claim 8, wherein said image display device further comprises a retreat instructing device, and said field of view display means retreats to a fixed point by an instruction from said retreat instructing device. New view 2
An image display device for displaying on a three-dimensional screen. 11. The image display device according to claim 8, wherein the view display means displays a new view when the viewpoint is moved on a circumference centered on a fixed point on a two-dimensional screen. An image display device for displaying. 12. The image display device according to claim 11, wherein the view display means determines an angle between a straight line connecting the fixed point and the viewpoint before the movement and a straight line connecting the point and the viewpoint after the movement. An image display device characterized by moving on a circumference by a predetermined angle when the angle is larger than the predetermined angle as compared with the predetermined angle. 13. The image display device according to claim 1, wherein the view display means displays a new view on the two-dimensional screen when the point and the viewpoint are simultaneously moved in a three-dimensional space. An image display device, characterized in that: 14. The image display device according to claim 6, wherein the view display means changes a view for avoiding the obstacle in a case where there is an obstacle between the viewpoint and the point. An image display device characterized in that it is displayed on a screen. 15. The image display device according to claim 14, wherein the viewpoint moves on a passage in a three-dimensional space, and the obstacle is on the passage. 16. The image display device according to claim 15, wherein the viewpoint avoids getting over the obstacle. 17. The image display device according to claim 14, wherein the obstacle has a hole shape, and the viewpoint avoids climbing down from the hole-shaped obstacle. Display device. 18. The image display apparatus according to claim 17, wherein said hole-shaped obstacle has a lifting means for connecting an edge of said hole and a bottom of said hole, and said lifting means moves when a viewpoint reaches said lifting means. An image display device, wherein avoidance of ascending and descending is performed using means. 19. The image display device according to claim 14, wherein the obstacle moves in a three-dimensional space. 20. The image display device according to claim 1, wherein the three-dimensional space is an underwater space. 21. The image display device according to claim 1, wherein the three-dimensional space is a space. 22. A visual field display step of displaying a visual field viewed from a viewpoint in a three-dimensional space on a two-dimensional screen; An image display method comprising: a point display step of superimposing and displaying the points on a three-dimensional screen; and a point moving step of moving the points in a three-dimensional space. An image display method characterized by displaying a new field of view on a two-dimensional screen. 23. The image display method according to claim 22, wherein the point displaying step includes: an object selecting step of selecting an object in a three-dimensional space to which a line of sight coming from the viewpoint falls; An image display method, comprising: a point coordinate calculating step of obtaining coordinates; and a point projecting step of projecting the point on a two-dimensional screen according to the shape of the target at the calculated point coordinates. 24. The image display method according to claim 22, wherein the view display step displays a new view on a two-dimensional screen when the viewpoint is fixed and the point is moved in a three-dimensional space. An image display method characterized by causing the image to be displayed. 25. The image display method according to claim 22, wherein the view display step displays a new view on the two-dimensional screen when the point is fixed and the viewpoint is moved in a three-dimensional space. An image display method characterized by causing the image to be displayed. 26. The image display method according to claim 22, wherein the view display step displays a new view on the two-dimensional screen when the point and the viewpoint are simultaneously moved in a three-dimensional space. An image display method characterized by the following. 27. The image display method according to claim 22, wherein, in a case where there is an obstacle between a viewpoint and a point, the view for avoiding the obstacle is two-dimensionally displayed. An image display method characterized by displaying on a screen. 28. A computer-readable recording medium on which a program for executing the image display method according to claim 22 is recorded.