CN203786778U - An outdoor augmented reality system - Google Patents

Abstract

An outdoor augmented reality system, including a computing device, a three-dimensional position tracking device, a display device and an image sensor, the computing device and the display device are integrated into a notebook computer, and the outdoor augmented reality system also includes a mobile stand , the above-mentioned components are installed on the mobile bracket. The utility model uses a mobile bracket to carry all the equipment on the back, which reduces the user's burden and is convenient to move. In addition, the utility model uses a notebook computer as the computing and display device of the utility model, which can be observed by many people and is convenient for sharing.

Description

An outdoor augmented reality system

technical field

The utility model relates to the technical field of image recognition, in particular to an outdoor augmented reality system.

Background technique

Augmented reality (AR, Augmented Reality) is a technology that uses virtual objects to enhance the reality of real scenes. Augmented reality is based on the real physical environment collected by cameras, etc., by annotating virtual generated information such as text, two-dimensional images, and three-dimensional models on the objects in the real physical environment displayed on the display screen, so as to realize the reality of the user. Annotation, description, or enhancement of, or emphasis on, certain effects of the physical environment.

At present, most of the outdoor mobile augmented reality systems are mainly realized by users wearing display helmets, carrying related computing devices and sensing devices such as magnetic trackers. Wherein, the helmet includes a display device and an image sensor unit. The augmented reality system obtains the user's field of view image through the image sensor unit on the helmet, and the computing device on the back performs image analysis and processing on the field of view image, obtains the user's position and posture information, and registers the virtual object on the field of view image for display. or use multiple sensing devices to obtain the user's position and posture information, and the computing device calculates its imaging coordinates on the display device based on the target's geographic location, and registers the virtual object on the field of view image.

There are following deficiencies in the implementation of the above-mentioned outdoor augmented reality system:

(1) Users need to wear and carry relatively complex and heavy equipment, such as helmets, various data cables, etc., which cause inconvenience to users;

(2) The augmented reality effect obtained by this method can only be observed by one person, which is not conducive to communicating with others and cannot be shared.

Utility model content

The technical problem to be solved by the utility model is to provide an outdoor augmented reality system that is easy to build and move, can be observed by many people, and is easy to share.

To solve the above-mentioned technical problems, the technical solution adopted by the utility model is as follows: an outdoor augmented reality system, including a computing device, a three-dimensional position tracking device, a display device and an image sensor, characterized in that the computing device and the display device are integrated , which is a notebook computer, the outdoor augmented reality system further includes a mobile bracket, and the above-mentioned components are installed on the mobile bracket.

The notebook computer obtains the real image through the image sensor, and obtains the position and attitude information of the image sensor through the three-dimensional position tracking device, and uses machine vision technology to supplement the acquired position and attitude information, and then calculates the virtual object by the notebook computer. Register to the real image shown on the laptop display.

The three-dimensional position tracking device is an inertial tracker. The inertial tracker consists of 3 mutually perpendicular gyroscopes and 3 mutually perpendicular accelerometers, forming an inertial measurement unit with 6 degrees of freedom. The inertial tracking has good real-time performance and is not easily disturbed by environmental factors.

The mobile support includes a base with wheels on the bottom surface, a telescopic rod installed vertically on the base, and horizontally installed on the upper end of the telescopic rod to support the platform in a horizontally rotatable manner. The notebook computer, image sensor and inertial tracker are arranged on the support on the platform.

The image sensor is a camera, and the inertial tracker and the camera are installed on the support platform through a horizontally arranged rotating shaft.

The utility model can realize the movement of the camera with 5 degrees of freedom, realize the movement in front, rear and left and right directions through the wheels, realize the movement in the up and down direction through the telescopic rod, realize the rotation in the horizontal plane through the support platform, and realize the swing in the longitudinal plane through the rotating shaft.

The telescopic rod includes a lifting column and a fixed column fixed in the middle of the base. The interior of the fixed column is hollow and tubular. The fixed pillar is provided with a gear, and the gear is meshed with the rack. The telescopic rod also includes a hand wheel, which is connected with the gear. The rotation of the hand wheel drives the gear to rotate. The rotation of the gear is converted into the lifting movement of the lifting pillar. There is also a screw hole on the side wall of the fixed pillar. A positioning screw with an external thread is installed in the screw hole. Turn the positioning screw inward to make the front end squeeze the lifting pillar to realize Positioning of lifting struts.

A bearing is horizontally fixed on the upper end surface of the lifting pillar, and a mounting shaft is arranged vertically downward on the bottom surface of the support platform, and the supporting platform is installed on the bearing on the lifting pillar through the mounting shaft.

The utility model has the following beneficial effects: the utility model uses a mobile bracket to carry all the equipment, which reduces the burden on the user and is convenient to move. In addition, the utility model uses a notebook computer as the computing and display device of the utility model, which can be observed by many people. It is convenient for sharing; the mobile bracket of the utility model has simple structure and flexible operation, and can realize multi-degree-of-freedom shooting of the camera, allowing multi-users to watch scenes from multi-angles.

Description of drawings

Fig. 1 is the perspective view of the specific embodiment of the utility model;

Fig. 2 is a partially sectional enlarged view of the telescoping rod of the specific embodiment of the present invention.

Detailed ways

As shown in Figures 1 and 2, the outdoor augmented reality system of the specific embodiment of the utility model includes a notebook computer 2, an inertial tracker 7 and a camera 8 connected to the notebook computer 2, and a mobile bracket for installing the above-mentioned devices. The utility model adopts the popular and portable notebook computer 2 to simultaneously complete the calculation and display functions of the augmented reality system, has a simple structure, is easy to build, and can be observed and shared by many people. the

Mobile support comprises bottom surface and is provided with the base 6 of wheel 15, and the telescopic rod that vertically is installed in base 6 middle parts is installed in telescopic rod upper end horizontally, can horizontally rotate support platform 10, and notebook computer 2 is placed on the support platform 10. The inertial tracker 7 and the camera 8 are installed on the support platform 10 through a horizontally arranged rotating shaft 1 . In this way, the wheels 15 move the camera 8 back and forth, left and right, the telescopic rod moves the camera 8 up and down, the rotating support platform 10 makes the camera 8 turn horizontally, and the rotating shaft 1 makes the camera 8 swing up and down in the longitudinal plane.

The telescopic rod comprises a fixed pillar 14, a lifting pillar 4, a hand wheel 12 and a set screw 5. The interior of the fixed pillar 14 is hollow and tubular, and the lifting pillar 4 is arranged in the inner lumen of the fixed pillar 14 . A rack 3 is vertically provided on the side wall of the lifting pillar 4, and a part of the side wall of the fixed pillar 4 protrudes outwards to form an arc surface 19, so that a cavity with a semicircular cross section is formed at this place inside the fixed pillar 4, and the gear 13 is installed in the semicircular cavity, the gear 13 is meshed with the rack 14, and the output shaft of the handwheel 12 is inserted into the center hole of the gear 13. Rotating the hand wheel 12 drives the gear 13 to rotate, and through the cooperation structure of the gear 13 and the rack 3, the rotation of the gear 13 is converted into the lifting movement of the lifting pillar 4. There is a screw hole on the side wall of the fixed pillar 14, and the set screw 5 is installed in the screw hole. The set screw 5 has an external thread, and the set screw 5 is rotated inwardly. Movement of pillar 4.

A bearing is horizontally fixed on the upper end surface of the lifting pillar 4, and the bottom surface of the support platform 10 is vertically provided with a mounting shaft downwards, and the supporting platform 10 is installed on the bearing of the lifting pillar 4 by the mounting shaft.

The specific structure that the inertial tracker 7 and the camera 8 are installed on the support platform 10 through the rotating shaft 1 is: the inertial tracker 7 and the camera 8 are arranged side by side up and down, and the two are fixed on a mounting plate 9, and the left and right sides of the back of the mounting plate 9 Respectively fixed on the rotating shaft 1 by the semi-circular hoop pieces 18, two erected mounting arms are oppositely arranged on the support platform 10, the rotating shaft 1 is supported between the two mounting arms, and one end passes through the mounting arm at the end. Thread is arranged, and nut 16 is housed on this thread. Turn the nut 16 to tighten or loosen the shaft 1 and the two mounting arms, thereby realizing the positioning and rotation of the shaft 10 . The other end of the rotating shaft 1 also passes through the mounting arm, and an end piece 17 is provided to prevent the end from getting loose from the opening at the upper end of the mounting arm. Here, both the end piece 17 and the nut 16 are in the shape of a four-pointed star.

Claims (6)

1. an Outdoor Augmented Reality System, comprise computing equipment, three-dimensional position tracking equipment, display device and imageing sensor, it is characterized in that, described computing equipment and display device are integrated, it is a notebook computer, described Outdoor Augmented Reality System also comprises a traversing carriage, and above-mentioned each device is arranged on this traversing carriage.

2. Outdoor Augmented Reality System according to claim 1, is characterized in that, described three-dimensional position tracking equipment is inertia tracker.

3. Outdoor Augmented Reality System according to claim 1 and 2, it is characterized in that, described traversing carriage comprises that bottom surface is provided with the base of wheel, vertically be arranged on the expansion link on base, level is arranged on expansion link upper end, can horizontally rotates ground support platform, and described notebook computer, imageing sensor and inertia tracker are arranged in support platform.

4. Outdoor Augmented Reality System according to claim 3, is characterized in that, described imageing sensor is a video camera, and described inertia tracker and video camera are arranged in support platform by a horizontally disposed rotating shaft.

5. Outdoor Augmented Reality System according to claim 4, it is characterized in that, described expansion link comprises lifting support and is fixed on the anchor post at base middle part, described anchor post inner hollow in a tubular form, described lifting support is arranged in anchor post interior lumen, on lifting support sidewall, be vertically provided with tooth bar, described anchor post is provided with gear, described wheel and rack is meshed, described expansion link also comprises a handwheel, handwheel is connected with gear, rotation hand wheel driven gear rotates, by the fit structure of wheel and rack, the rotation of gear is converted into the elevating movement of lifting support, on the sidewall of anchor post, also have a screw, in screw, be provided with one and there is externally threaded dog screw, inside rotational positioning screw, make its front end extruding lifting support, realize the location of lifting support.

6. Outdoor Augmented Reality System according to claim 5, it is characterized in that, horizontal fixing bearing on the upper surface of described lifting support, the bottom surface of support platform is provided with an installation shaft straight down, and support platform is arranged on the bearing on lifting support by this installation shaft.