WO2012010117A1 - Method and device for recording three-dimensional image material for different display variables while utilizing the particular full depth budget - Google Patents

Abstract

The invention relates to a method and device for recording three-dimensional image material for different display variables, wherein the particular full depth budget is utilized. For this purpose, at least three cameras are used, which are all directed at a recorded object, the optical axes of which are oriented either in parallel or convergently, and which record all image streams simultaneously, wherein the distances between the cameras can be freely selected depending on the recording parameters and later display parameters. During play back, the image streams of the individual cameras can be bundled freely to form at least two camera image streams. The method or device is to be used both for stationary image recordings and for moving image recordings.

Description

 Method and device for recording three-dimensional image material for different presentation sizes using the full depth budget

The invention relates to a method and a device for receiving

Three-dimensional image material for different display sizes, each of which is the full depth budget using a variable basic distance between two cameras is exploited. The method and the device is applicable to both the still, as well as the moving image recording.

State of the art:

For taking plastic (= three-dimensional) images, which are shown with multi-channel image display techniques, at least two views of an object to be recorded are necessary, with the individual images forming a single image

Brill, D., Stork, D. A look into the light: insights into the nature of light and seeing, in color and

Photography; Birkhäuser Verlag, Basel-Boston and Springer Verlag, Berlin-Heidelberg; 1990; Page 230 ff). These images can be processed with known image separation techniques such as

Polarization methods, shutter glasses techniques, autostereoscopic lenticular techniques, parallax barrier techniques, or similar plastic methods

Image representation are shown. This representation can be done on screens in cinema size but also on small monitors (eg 24 "size) All of these methods require at least two perspectively different views of an object These views are usually generated by at least two cameras in different, adjacent perspective (see Sand R, three-dimensional television, in DE-Z: television and cinema technology, 37, No. 8/1983, page 321 ff).

From the document DE 20 2007 010 389 Ul a recording device with multiple cameras but fixed camera distance is known.

These cameras look either side by side in the same direction, but with slightly different perspective (parallax) - a so-called side-by-side structure - or are placed on two camera levels, which are merged by a semitransparent mirror to a plane (mirror -Construction). As the distances sometimes smaller

l can be, as the camera housings allow in a side-by-side structure, a special device is used in particular in the film sector, which merges the beam paths of at least two cameras via a semitransparent mirror so that the beam paths of both cameras can overlap, without the housings and / or lenses interfering with each other (see Lipton, Lenny: Foundations of the Stereoscopy Cinema: A Study in Depth, Van Nostrand Reinhold Company, 1982). Furthermore, it is also possible to arrange at least two cameras on at least two levels (see exemplary embodiment in DE 10 2005 042 413 B4). The resulting camera viewing angles also look in the same direction and the shots are taken from slightly different perspectives.

These devices are usually not always with the same camera type but with different camera types and / or lenses depending on the task and

Preference of the user provided. Since the cameras and lenses used in such an apparatus simultaneously for plastic recording never exactly the same

geometric properties (eg due to manufacturing tolerances) to each other (in particular, this applies to zoom optics) and thus a previously calibrated recording device (eg by parallel optical axes in a horizontal plane) is never given, the positions of the beam paths must be matched to each other Errors, such as a height parallax or diverging optical axes, to avoid.

Often a fixed camera distance was chosen when shooting for the sake of simplicity, but this results in a limited quality of plastic reproduction. In order to exploit the entire dynamics of a plastic representation process with a wide variety of motifs and not to exceed physiological limits when viewing the recorded plastic-looking image, it is necessary, the so-called stereo base

(resulting distance of lens centers to each other) to each plastic pickup set and to the subject depending on other parameters, e.g. later

To adjust the display size of the plastic artwork. Problem and task:

In particular, the last-mentioned size, ie the display size (or in other words the screen size or the size of the screen) is a very important factor that decides which stereobase in the plastic image acquisition must be worked to the full depth dynamics (the Deep budget). In retrospect, this stereo basis can no longer be changed or only with severe quality losses (by calculating a virtual camera position), which is unreasonable, especially in the high-quality range, or can only be achieved with a great deal of effort and loss of detail. In plastic image reproduction, it makes a big difference whether, e.g. For a large 12-meter screen, or for a 24-inch display, the larger the screen is for later playback, the smaller the stereo base must be when recording the material, thus limiting the viewer's physiological limitations Similarly, the smaller the screen or the screen, the larger the stereo base must be, so that a plastic impression is achieved and depth is not given away, so is the stereo base once for a particular

Screen size, so the user is on a specific screen or

Display size and can not change this afterwards. However, if he chooses a different screen or display size, this results in a poor representation of the plastic content: If a content that has been produced for a small screen or a screen played on a larger screen, so are the physiological limits of the Observers in the plastic image representation very quickly exceeded and the viewer passes with his eyes either into diverging, or - if the far-field parallax (positive parallax) were adjusted by a subsequent moving the frames - occur so-called dummy window injuries at the edges and / or the depth budget in negative parallax is exceeded. If, on the other hand, content produced for a large screen (eg cinema) is displayed on a smaller screen, eg a small 3d monitor for later TV or DVD evaluation, the content is flat and not very deep. This problem poses a big problem especially in cases where a movie is to be produced simultaneously for a cinema release (large screen) and for 3D television (small screen), which is the entire secondary utilization, even on DVD or Blu-ray , puts in danger.

Task:

The invention is therefore based on the object to produce three-dimensional image material that is able to exploit the respective entire depth budget at the same time for several presentation sizes with little effort.

Troubleshooting:

As a solution, the invention proposes a method and a device which records the scene to be recorded with at least two stereo bases with at least three cameras on a common camera holding device. All cameras look the same

Direction. The optical axes can either be converging on an object or parallel. In order to be able to record three-dimensional images simultaneously for different display sizes, you must simultaneously use

different stereo bases are recorded. So that the viewing angles do not differ greatly and at least one camera can be saved, the invention proposes to use at least one camera together for both display sizes. This will be explained in the following example in an embodiment with three cameras:

Assuming that three dimensional imagery is to be produced simultaneously for a 5 meter wide screen (approximate equivalent of a suitable depth for a medium sized 3D television) and for a movie screen (assuming a 10 meter wide screen, for example) for the 5-meter-wide screen with the double stereo base than for the 10-meter-wide movie screen, the available depth (depth budget) between so-called shear window (objects there are perceived on the screen surface and not in front or behind) and far point ( the screen parallax of the far points on the screen must not be greater than the distance between the eyes, otherwise the eyes must diverge, resulting in discomfort when viewing), or not exceeding them. Thus, if the parallax is calculated at a certain value x (eg in mm) due to the parameters to be included in the calculation (such as the focal length or the distances in the recording room) for a given display size (in this case the 10 meter wide screen), two of the three cameras positioned at a distance x. The image streams that are generated and recorded by these cameras will later be used again to record this presentation size. In order to simultaneously exploit the full depth budget for a presentation of the photographic material on the 5-meter-wide screen, it is necessary to additionally record 2x with two cameras at a double distance. In order to save a camera and to obtain the same possible viewing angles, a camera from the Camerachenchen can be used for the 10 meter screen, together with a new camera (the third in total), which has 2x the distance to the first camera (see Figure 1 - an example of a side-by-side structure). With the "double use" of a camera, not only the material cost can be limited, but also to ensure that the viewing angle and thus the image of the image largely (so at least this is a common camera regarding) is maintained.

Since even with regular 3D recording with two cameras, the stereo base depending on parameters (such as focal length or distances to relevant points in the recording room) adjusted and thus (on-air or off-air) must be changed, so it is also provided here To make stereo bases changeable. Since the representation size as a factor in the

Calculation is also provided here, a factor of a stereo basis (for example, for the representation size 1 - in the following for the sake of simplicity

Called stereo base 1) to the other stereo base (eg for the display size 2 hereinafter referred to as stereo base 2 for simplicity). To stay in the above example: If the stereo base 1 has to be reduced to half (this would be 0.5x), the stereo base 2 will change to half in sync (this would be x). If the stereo base has to be doubled, the stereo base 1 changes to the value 2x and the stereo base 2 to the value 4x. The stereobases thus differ from one another by a certain factor, which in principle always remains the same (only for reasons of design can this be changed slightly from scene to scene or be adjusted; This is the case, for example, if the movie screen permits greater depth variations depending on the scene than a small screen or vice versa).

As can be seen by way of example in FIG. 2 (here by way of example for a mirror construction), three different display variables can also be covered with a three-camera setup. For the lowest stereo base xl camera Kl and K3 can be used, for a medium stereo base x2 camera K3 and K2 and for a large stereo base x3 camera Kl and K2.

The ratio in which the cameras are related to each other, so depending on the later

Display sizes selected. To make the operation of such a structure user-friendly and clear, the user can access the stereo base (and thus the

Camera pair) for a particular display size and shape the calculations of the stereo base for it (master stereo base); The third camera, and thus the second stereo base (slave stereo base), in this example - without the need for separate intervention - automatically adjusts itself in the ratio determined before the start of shooting. The distances of the cameras are thus selected in a certain ratio and synchronously in

Adjusted constant ratio, so that a variable basic distance between two cameras multiplied by a certain factor to at least one other

Camera bundle can be transmitted, for which one of the two for the

Base pitch used cameras can be used twice.

These cameras record the image signals synchronously and simultaneously, and when playing, depending on the screen size or type (multi-view screens) at least two

Image streams from the recorded image streams are selected simultaneously.

For later playback, all three image streams may then be combined into a single data file, in which case (possibly automatically) it can be decided by the playback medium which presentation size is currently available. In this case, only the image stream pair would be selected for display, which fits best to the respective presentation size. This function could be integrated eg with Blu-ray discs, whereby the playback device (or the user) decides on the basis of a communication with the screen (here the screen size is transmitted to the player) which image stream pair is most suitable for the connected screen User preference is. The faster the electronic development proceeds, the more likely would be a design case in which a whole series of cameras and lenses (or similar imager / imager) are in series, and depending on the later presentation setup, the two cameras (imagers) are selected come closest to the required stereo base. As a result, there would be no mechanical wear parts due to a mechanical movement of cameras (image converters), as would be the case with cheap 3D cameras. Again, the player could decide depending on the connected monitor, which image pair or which image series (ultiviewmonitoren) would be the most suitable.

In addition to the synchronized recording (inter alia, the same sensor readout clock), the same setting of the camera parameters in all cameras and lenses is useful; below that is the same focal length, the same focus, the same camera parameters (where appropriate), etc. to understand. The image material is simultaneously recorded in such a way that suitable image stream pairs can be picked out for the desired presentation size for playback. It may be useful to record at different frame rates, resolutions, or exposures (e.g., with different frame rate, one for the cinema (24p) one for 3 D-TV (e.g., 50i)). Again this is suggested as possible.

 The cameras can either all be arranged on a line or curve (side-by-side structure) or merged via at least one semitransparent mirror on at least two levels to form a plane. A possible embodiment with at least three levels can be found in patent DE 10 2005 042 413 B4. This has three camera levels and two semi-transparent mirrors. This would allow all three cameras to be driven on a zero-stereo basis, resulting in calibration advantages and freedom of design for small stereo bases.

The selection of the basic distance can be made manually via corresponding user interfaces or automatically (with the help of image analysis or distance measurement). In the process, data from used components can be read out for storage, saved and, if necessary, recalled immediately (eg lens parameters, such as the current focal length). As with the choice or calculation of the basic distance, the calibration of the cameras can also be done manually or by motor control. In the case of calibration, as shown in FIG. 3, the first camera (camera 1) can be switched to the middle one Camera (camera 3) - here at stereo base 1 zero - and then the last camera (camera 2) in turn the middle camera (camera 3) - then also with stereo base 2 zero) are aligned. This ensures that all three cameras have the same calibration (in this case, all three optical axes are parallel). The synchronous adjustment of the camera in a certain factor can in the mechanical case on spindles with different pitch or via a transmission, with the

different factors can be created, accomplished.

In order to keep the recording device, equipped with at least three cameras, always in balance, the invention provides a weight balance in the way that at least two cameras can be moved to guides in the opposite direction from the focus of the apparatus out. The synchronous movement on either side may be by a mechanical coupling (e.g., a belt drive with or without translation and with or without a motor drive), or by at least two synchronized motors simultaneously moving the carriages, for example via spindles

Move opposite side. In order to be able to balance the center of gravity again, depending on the attachments, there is a kind of coupling with mechanical coupling, with which only at least one camera can be moved with at least one other camera remaining stationary until the system is balanced. Thereafter, the coupling is restored. This can also be done electronically in the case of a coupling with belt drive and also in the case of multi-motor control by an intelligent control of the motors.

 The device may provide an adjustment for adjusting the distance of the camera from the semitransparent mirror. At least one camera including any Versteilvorrichtungen for calibration is mounted on a carriage (either with the help of a guide, eg ball bearings, or as a sliding positive connection, eg dovetail), which is set in the direction of the mirror in the distance and possibly clamped in one position or can be braked. This function of the variable

Changing the distance of the camera unit from the semitransparent mirror is necessary in order to mount lenses with different length. The setting of the

Removal can be done manually or via motors.

For setting the basic setting (basic stereo base and / or other stereo bases) and the other cameras, but also for calibrating the cameras by one horizontal and / or vertical and / or diagonal angles and / or about the height and / or the optical axis, not only a manual but also a motor control can be used. The control of the motors can be done by a computer unit, the distance by stored in advance or live at runtime the

Calibration of the lenses by an analysis of the or two or more video image / images ensures (with a correction of height errors, rotation errors, tilt errors, mirror distance, etc.). For a lens change or to clean the front lens, the mounted on the guide camera slide from the with the spindle or motor

connected unit disconnected / decoupled and on the guide very quickly manually in the direction opposite to the mirror (in a mirror construction - in a side-by-side construction, only the adjustment option is useful) and possibly coupled there again in an end position so that he is arrested. The locking can also, possibly in addition, be done by braking the camera slide relative to the guide or overall device. This device facilitates the objective change since the calibrated end position can be approached again exactly after the objective change and usually no recalibration in the distance is necessary. Finding the right distance from the mirror can be facilitated by a counter. At a

motorized retraction of the camera slide the respective calibrated position can be stored in a computer unit, the carriage are moved away from the mirror at the touch of a button and be approached after the lens has been changed or cleaned the front lens. In particular, in the case of the camera (s), which must be adjusted against gravity, a counter-spring, which can be adapted to the camera weight and the structures, facilitate moving the camera (s) including sled against gravity.

 For all motors, the control can be either manually decentralized at the

Device by the user, or decentralized by cable or radio control. In this case, a small mobile control unit can be used, such. a W-Lan or Bluetooth-connected controller (e.g., subnotebook) connected to a

customized software and a user interface can control at least one engine. There may also be stored data for controlling at least one motor. Similarly, a control manually via cable, radio or other transmission paths from a central location is possible (eg control room with corresponding image monitoring devices, eg suitable for plastic recording, monitors). If several recording devices in use (eg in a multi-camera operation), an operator can either control each recording device with its own control unit or its own controls or switch between the recording devices or motors within a recording device and with only ever mind

Control control. The control of the motors can also be done automatically via a computer unit or control unit (decentralized to the receiving device or centrally, possibly also for several recording devices simultaneously). It can the

Control unit controlling the motors based on a calculating algorithm (e.g., the stereo base / stereo bases or the convergence position / s of the camera / s). The necessary values are either stored in the control unit (eg by a previous calibration or adjustment process), are entered by the user or at runtime from the equipment used (eg reading the lenses - eg focus and focal length) or by additional equipment (distance measurement obtained by laser, ultrasound, by triangulation, auxiliary cameras or by analysis of one or more live recorded image content). Alternatively, you can

Calibration values for the calibration motors or setting values for the motors, which change the plastic effect of the image, also obtained by image-analyzing algorithms and, if necessary, previously set by the user limits and are used immediately for the control of the motors. For this purpose, image correspondences for the detection of calibration errors (height error, rotation error, tilt error, etc.) or others

Setting parameters {stereo base) are used. Alternatively, the user may also manually image parts or correspondence points (e.g., the far, fake, or near points) in at least one of the images generated by the cameras via a

Highlight the user interface, which can then be used for calibration or for setting the plastic parameters. To facilitate identification of

Image correspondences can also auxiliary devices, for example, with well recognizable in the image signal patterns or markers are introduced, which facilitate the search of the correspondenz searching algorithm or are more easily detected by distance measuring devices. In this case, the user can at any time have intervention in the control of the motors via a user interface, and possibly make user-specific limits or an entire or partial manual control. The parameters, notes on the quality of the calibration, the later Effect on the viewer of the plastic film or the limits of the plastic viewing or other useful information or suggestions can be communicated to the user on a display or other user interface. In all cases, all parameters (eg stereo base, correction parameters, focal length, etc.) can also be used as metadata for a later check or a later combination of the real one

Image content with e.g. computer-generated elements (so-called CGI compositing) e.g. stored separately with the current time code, another provided by a device information or image content or other information entered by the user or stored together with the video image. For the combination of real shots with miniature shots (e.g., 1: 5), conversions of the recorded metadata to the miniature scale can be made automatically, and then applied to the setting of the capture device for the miniature scale. Also, all boundaries or settings (e.g., the bill window, near or far, lens-visible capture cone) may be displayed on a user interface or set. This provides a way of visualizing the

Setting parameters and limits for operator and / or for the persons involved in the recording / actor in object space (recording set). This can be, for example, a projection of the representable boundaries or the apparent window into the object space or a

Visualization on a monitor / head-mounted display (HMD). For example, this can be done by projecting into the set (for example, a laser attached to the tripod that automatically calculates its height and, due to geometrical calculations, changes the angle of a wide-ranging laser pointer depending on the distance.) This can not be done by the recording camera An embodiment would be a projection into the recording set, in which "forbidden" image areas are marked (eg marked in color) - this marking can be hidden for real recording or in human-visible but invisible to the camera by blocking filter wavelength ranges An alternative to this would be a projection system (eg in time multiplex) synchronized with the cameras via, for example, Genlock, which uses the recording pauses (eg blanking interval between two images) to project certain areas into the recording room at precisely this moment and in time for the new image acquisition the cameo turn off ras again. This would make the marked and projected areas appear in integral human perception appear, whereas these are not visible to the cameras in the plastic image recording. Alternatively, these areas may be displayed on a monitor or HMD visualization.

The above invention thus has the advantage that you do not need to rotate a movie twice with different stereo base settings. This would make neither financial nor design sense. Opposite two juxtaposed

Recording devices this approach has the further advantage that no differences in the image sections or angles occur; So the actors know exactly which camera to play in.

The present invention contributes to three-dimensional imagery (meaning both photography and video or film) in a variety of ways

Presentation sizes impressive and, without causing discomfort, in full

Deep splendor can be perceived.

Claims

Claims: 1. A method for recording three-dimensional image material for different display sizes using the full depth budget in each case using a variable basic distance between two cameras,  using at least 3 cameras to simultaneously generate at least two different stereo bases  - all cameras are aligned to a subject,  the optical axes are directed either parallel or convergent to the object to be photographed,  - Are the different stereo bases generating distances between the individual cameras in a fixed before the start of recording fixed relationship to each other, in such a way that  the ratio of the camera distances to the later  Display sizes is selected, and  when changing a distance between two cameras, the distances of all cameras are changed synchronously in the specified ratio,  a camera pair provided for a particular display size  whose variable distance is defined as the base distance as a function of acquisition parameters,  - synced the cameras as well as with the same focal length and  Record focus,  - All image streams are simultaneously recorded in such a way that for playing suitable Bildstrompaare for the particular desired display size can be picked out, this selection of Bildstrompaare can be made automatically by the playback medium and optionally from a common data file only relevant for the connected devices image stream pair picks out , 2. The method according to claim 1, characterized in that settings and / or camera parameters are selected so that the recorded images have the same exposure, the same frame rate and / or the same resolution. 3. The method according to claim 1 or 2, characterized in that the cameras are arranged side by side on a line or curve. 4. The method according to claim 1 or 2, characterized in that the cameras are arranged on at least two planes at right angles to each other and the beam paths of the cameras are merged via at least one semitransparent mirror to beam paths on a plane. A method according to any one of claims 1 to 4, characterized in that the choice of pitch and other adjustment parameters, e.g. Calibration, manually entered by the user. A method according to any one of claims 1 to 5, characterized in that the choice of the pitch and other adjustment parameters, e.g. Calibration is performed automatically by a control unit which, based on data entered by the user, can calculate and implement the parameters required for control. A method according to any one of claims 1 to 6, characterized in that the choice of pitch and other adjustment parameters, e.g. Calibration is done automatically by a control unit that uses the parameters required for control from pre-stored data and / or from the ones used  Read, calculate and implement components. 8. The method according to any one of claims 1 to 7, characterized in that the  Synchronous change of the camera distances is made manually or by motor. 9. The method according to claim 8, characterized in that the synchronous change of the camera distances is carried out via a mechanical or electronic coupling. 10. The method according to claim 9, characterized in that for changing the  Distance ratio of the cameras decoupled coupling and can be coupled again in the new ratio. 11. The method according to any one of claims 8 to 10, characterized in that the  Synchronous change of the camera distances and / or the change of the  Calibration motors on individually driven motors or other electrical or electromagnetic drives is made. 12. The method according to any one of claims 8 to 11, characterized in that the synchronous change of the camera distances and / or their base distance and / or the change of Kaiibrierungsmotoren is made manually by an operator via cable or radio. 13. The method according to any one of claims 8 to 11, characterized in that the synchronous change of the camera distances and / or their pitch and / or the change of the calibration motors is made centrally by a computer unit via cable or radio. 14. The method according to any one of claims 8 to 11, characterized in that the synchronous change of the camera distances and / or their base distance and / or the change of the calibration motors is made decentralized by a computer unit to the device. 15. The method according to any one of claims 8 to 11, characterized in that the synchronous change of the camera distances and / or their pitch and / or the change of Kaiibrierungsmotoren via a mobile computer unit, such as subnotebook, via cable or radio is made. 16. The method according to any one of claims 8 to 15, characterized in that the values for the synchronous change of the camera distances and / or their  Base distance and / or the change of the calibration motors are generated according to a calculating algorithm. 17. The method according to any one of claims 1 to 16, characterized in that for the alignment of the cameras they are calibrated step by step from camera to camera. 18. The method according to any one of claims 1 to 17, characterized in that the cameras are arranged and adjusted so synchronously to each other that the overall structure is always in balance. 19. The method according to any one of claims 1 to 18, characterized in that  at least one camera with one of the other cameras receives different frame rate and / or resolution and / or exposure. 20. Device for recording three-dimensional image material for different presentation sizes by utilizing the full depth budget for each  Implementation of the method according to claim 1,  in which at least three cameras are arranged on a holding device so that their optical axes are either parallel or convergent to the  Shooting object can be directed  the distances between the individual cameras generating the different stereo bases are in a fixed relationship to each other, the cameras are connected by an adjusting device such that when changing a distance between two cameras, the distances of all cameras in the specified ratio are changed synchronously, and that a recording device is provided, which can simultaneously record the image streams of all cameras that for playback suitable Bildstrompaare can be picked out. 21. The device according to claim 20, characterized in that the cameras are arranged side by side on a line or curve. 22. The apparatus of claim 20 or 21, characterized in that the cameras are arranged on at least two planes at right angles to each other and the beam paths of the cameras are merged via a semi-transparent mirror to beam paths on a plane. 23. Device according to one of claims 20 to 22, characterized in that the cameras are arranged on at least three mutually perpendicular planes, and the beam paths of the cameras are merged via two mutually perpendicular semitransparent mirrors to beam paths on a plane, 24. Device according to one of claims 20 to 23, characterized in that the adjusting unit is manually or by motors or other electrical or electromagnetic drives adjustable. 25. Device according to one of claims 20 to 24, characterized in that the adjusting unit has a mechanical or electronic coupling device. 26. Device according to one of claims 20 to 25, characterized in that the adjusting unit is adjustable by a control unit, which can calculate and implement the required parameters for control based on user input data. 27. Device according to one of claims 20 to 25, characterized in that the adjusting unit is adjustable by a control unit, which requires the parameters required for control from previously stored data and / or from the Read, calculate and implement used components. 28. Device according to one of claims 20 to 27, characterized in that a computer unit is present, the values for the synchronous change of  Camera distances and / or their base distance after a calculating  Algorithm generated. 29. The device according to one of claims 20 to 28, characterized in that the cameras are arranged and so synchronously adjustable to each other that the overall structure is always in balance. 30. Device according to one of claims 20 to 29, characterized in that for the calibration of the cameras, a manual or motor means for inclination to the horizontal and / or vertical and / or diagonal and / or optical axis present and / or a height adjustment is provided , 31. The device according to one of claims 20 to 30, characterized in that the cameras are mounted on a carriage, which can be adjusted for the distance adjustment of the camera lens to the mirror on a guide. 32. Apparatus according to claim 31, characterized in that the adjustment  is powered by a motor and can drive to certain positions automatically or user-controlled. 33. Device according to one of claims 31 to 32, characterized in that the adjustment has a rangefinder. 34. Device according to one of claims 31 to 33, characterized in that the cameras can be coupled with your guide slide for fast lens change or cleaning of the lens from a set position of an element remaining in this position, can be moved away from the mirror and after done Lens change or cleaning the lens can be moved back to the previously set position without losing this setting. 35. Device according to one of claims 24 to 34, characterized in that the control of individual or all motors is done manually by an operator by cable or wireless. 36. Device according to one of claims 24 to 34, characterized in that the control of individual or all motors is done centrally by a computer unit by cable or wireless. 37. Device according to one of claims 24 to 34, characterized in that the control of individual or all motors is decentralized by a computer unit to the device. 38. Device according to one of claims 24 to 37, characterized in that control of individual or all motors can be controlled via a mobile computer unit, such as subnotebook, via cable or radio 39. Device according to one of claims 24 to 38, characterized in that the computer unit is designed so that it can generate the values for the control of individual or all motors according to a calculating algorithm. 40. Apparatus according to claim 39, characterized in that the computer unit is designed such that it calculates the parameters from which the calculating algorithm calculates a value for controlling individual or all motors, from the camera and / or the objective and / or Distance meter can read. 41. Device according to one of claims 39 or 40, characterized in that a device is provided which measure or calculate the correction parameters for controlling individual or all motors in advance, then save and finally with the help of parameters that at runtime from camera or lens can be read out, immediately retrieve. 42. Device according to one of claims 39 to 41, characterized in that a computer unit is present, the values for the control of the motors according to a Bildanalysierenden algorithm from the current video image of the Main cameras or the video image from backup cameras. 43. Apparatus according to claim 42, characterized in that the computer unit is designed so that the image-analyzing algorithm can use image correspondences for detecting calibration errors or other setting parameters. 44. Apparatus according to claim 42 or 43, characterized in that the  Computing unit is designed so that the image-analyzing algorithm  Use image correspondences from image-attached calibration aids to determine calibration errors or other adjustment parameters. 45. Device according to one of claims 20 to 44, characterized in that a display or other user interface for displaying the adjustment parameters is present. 46. Device according to one of claims 20 to 45, characterized in that there is a device which indicates the limits of the stereoscopic viewing in particular on an information graphic superimposed on the video image. 47. Device according to one of claims 20 to 46, characterized in that it is designed so that it limits the stereoscopic viewing in  Object space displays. 48. Apparatus according to claim 47, characterized in that the limits of stereoscopic viewing in the object space are visible to the user, but are displayed invisibly for the cameras. 49. Device according to one of claims 20 to 48, characterized in that a display device is present, which can pick out of all recorded image streams for a current display size most suitable image stream pairs automatically or by user input.