CN100512455C - Method and device for stereoscopic imaging - Google Patents

Abstract

The invention discloses a method for stereoscopic imaging, the steps of which are as follows: using two groups of imaging devices, the central point of each imaging is always aligned with the subject to be photographed by automatic or manual control, and two channels are generated and scanned synchronously using a unified time base signal image signal; record the generated two-way video signal in the recorder; collect the generated video and audio signals separately or synchronously, edit the two-way signal synchronously and lock and play synchronously; adopt the combination lens method of convex lens and prism, Or the two-way video signal is displayed on the TV screen in the form of a vertical grating through an electronic switch, and a black and white grating is set at a corresponding distance in front of the TV screen, so that the left and right eyes of the person obtain the captured images of the stereo camera lens respectively. The present invention has the following advantages: based on the principle of bionics, follows the objective rules of human eyes observing objects, simulates and manufactures conditions that meet the most similar conditions for human eyes viewing actual objects, and thus realizes stereoscopic vision of images.

Description

Stereoscopic imaging method and device

technical field

The invention relates to a stereo imaging method and device.

Background technique

Previous stereoscopic imaging technologies, such as polarized light, strobe alternate switch, etc., achieved stereoscopic effect at the cost of loss of image information, and the cost of stereoscopic acquisition was extremely high, and the visual effect was not good, so the market prospect was not good.

Contents of the invention

The object of the present invention is to provide a stereoscopic imaging method and device to solve the problems of preserving and increasing image information, improving resolution and observing undistorted stereoscopic images during stereoscopic imaging.

In order to solve the problems of the technologies described above, the steps of the stereoscopic imaging adopted by the present invention are as follows:

1) Two groups of imaging devices are adopted, the focal length of their lenses is equivalent to the focal length of the human eyeball, and the distance between the CCD photosensitive sheets is between 60mm-70mm, and the center points of the respective imaging are always aligned with the subject to be photographed by automatic or manual control, generating two The channel uses a unified time base signal to scan the video signal synchronously;

2) The two-way video signals generated in step 1) are simultaneously recorded in two recorders or a recorder for synchronous recording of two-way signals and synchronous playback of two-way signals;

3) separately or synchronously collect the video signal generated in step 2), carry out synchronous editing of the two-way signal, and lock and play the stereoscopic TV signal formed by the edited two-way image signal synchronously; or import the stereoscopic TV signal with dual frequency, Burned into a stereo disc by a dual video recorder;

4) The three-dimensional information is to use the combination lens mode of convex lens and prism, and the TV images and photos of the scattered two-way display are transformed into superimposed and superimposed three-dimensional images of people's left and right eyes through magnification and refraction for display; or the three-dimensional information is The two-way video signal is displayed on the TV screen in the form of a vertical grating through an electronic switch. The image passes through a black and white grating that is set at a corresponding distance in front of the TV screen and is synchronously switched with the electronic switch, so that the left and right eyes of the person can respectively obtain a stereoscopic image. The image captured by the lens to realize the stereoscopic vision of the image.

In the stereoscopic imaging method described above, the image signal is transmitted over a long distance in a wired or wireless manner through satellites, radio and television, and the Internet. The terminal is then interpreted as a dual-channel signal display.

A kind of stereoscopic imaging method as mentioned above, after switching and mixing the two-way signals, the synthesized video signals alternately changing in the form of longitudinal rasters are single-channel output signals, which are directly recorded by ordinary video recorders, hard disk video recorders and optical discs recorder and displayed directly on a television screen with a black and white raster.

As mentioned above, the method of stereoscopic imaging, two-way signal switching and mixing is first to add the bottom of the two-way signal image, which is generally the part not displayed at the bottom of the TV screen, respectively add black and white bottom edges, switch through the electronic switch, and transform it into The alternately changing black and white bottom edge video signal synthesized by the longitudinal raster signal is used as the basis for the change of the black and white raster.

A stereo imaging device is characterized in that it comprises:

The dual-camera stereoscopic camera device consists of two groups of lenses with the same focal length as the human eyeball, a dual camera device with a distance between two CCD photosensitive sheets of 60-70MM, a base for moving and fixing the two camera devices and controlling the two camera devices Change the angle synchronously so that the axes of the two sets of lenses are always composed of a servo system that crosses the subject;

Image information recorder, when the recorder is a dual-channel signal recording and playback, it is directly connected to the dual-channel signal output end of the camera device; when the recorder is an ordinary recording and playback (single channel), its input terminal is connected to a In the form of vertical gratings, the output ends of the switching synthesis circuit that alternately change into one signal are connected, and the two input ends of the switching synthesis circuit are connected with the dual-machine stereoscopic camera device; the stereoscopic image display device, the display device is composed of the two-way signal display It is composed of a combination of convex lens and prism, or it is composed of a display showing alternately exchanged longitudinal grating signals and a black and white grating that is set at a corresponding distance in front of the display and is synchronously converted with the alternately transformed longitudinal grating signals. A stereoscopic imaging device as described above, the servo system includes a fixed base, a dual camera base fixed on the fixed base through shafts, a pair of ends are respectively connected to the rear end of the dual camera base through shafts, and the other end is A connecting rod and a lead screw control handle or a servo motor fixed on a moving lead screw installed on a fixed base through shaft activities.

In the stereoscopic imaging method described above, the switching synthesis circuit is composed of a non-linear editing machine controlled by software or an electronic switching circuit.

The present invention has following advantage and technical effect:

1. Based on the principle of bionics, follow the objective laws of human eyes to observe objects, and simulate and manufacture conditions that meet the most similar conditions for human eyes to observe actual objects, thus realizing the stereoscopic vision of images;

2. The present invention can meet the needs of computer networks, radio and television, digital cable TV and various formats of optical discs, etc.;

3. The present invention can not only be applied to existing analog TV systems and high-definition digital TV systems, but also can be applied to higher-definition TV systems that may appear in the future.

Description of drawings

FIG. 1 is a schematic diagram of the mechanical structure of the dual cameras of the present invention.

Fig. 2 is a schematic diagram of the imaging principle of the dual camera of the present invention.

Fig. 3 is a schematic diagram of an embodiment of the stereoscopic information display of the present invention.

Fig. 4 is a schematic diagram of another embodiment of the stereoscopic information display of the present invention.

Fig. 5 is a schematic diagram of the recording, editing and playing process of the present invention.

Detailed ways

The present invention collects stereoscopic information through a stereoscopic television camera, a stereoscopic digital camera or a stereoscopic camera, records the stereoscopic information through a memory, a video recorder, or an editing machine, and uses a stereoscopic film viewer and a glasses-type or screen-type stereoscopic television. The machine directly watches the restored three-dimensional scene with naked eyes.

System composition: This system is composed of three-dimensional information collection, three-dimensional information editing, three-dimensional information playback, three-dimensional information display and other parts.

1. Three-dimensional information collection:

Using dual-camera shooting (stereo camera, camera) to collect image information:

1) It is the same as the law of seeing objects with human eyes. The center point of the dual-camera image should always intersect with the subject to be photographed (see Figure 2).

Realization method—through a mechanical device connected to the base of the camera, the variable of the automatic zoom is automatically controlled by the servo system (servo motor) to change the angle of the two cameras so that the distance between the camera and various cameras is different from the subject being shot To achieve the purpose that the center point of the dual-camera image must always intersect with the subject being photographed. Also the mode that can manually watch image effect reaches the center point of two-machine image with the object of being photographed subject intersecting with glasses type stereo electric monitor in manual mode. Please refer to Figure 1 for the specific implementation structure. The A frame 1 and the B frame 2 are respectively fixed on the base 3 through shaft activities. The connecting rods 4, 7 and the leading screw 5 are flexibly connected through the shaft. Lead screw 5 is driven by hand wheel 6 or servo motor.

2) It is the same as the human eye to see the object. The focal length of the dual-camera lens should be 50mm (the same structure as the human eyeball)

3) The distance between the two-machine target surfaces (CCD photosensitive film—equivalent to the human fundus) with the same structure as the human eyes should be 60-70mm.

4) The two machines use a unified time base signal to scan synchronously, and the two video signals are simultaneously recorded in two or one recorder (can be a video recorder, DVD recorder, hard disk video recorder, etc.) - the recorder should be a two-way It is a dual-channel record player that records signals synchronously and plays dual-channel signals synchronously.

2. Three-dimensional information editing:

The main principle of the dedicated stereo information editing system is to separately or synchronously collect the video and audio signals output by the stereo camera, the camera, edit the two-way signals synchronously, and compose the edited two-way video and audio signals to form a three-dimensional TV. The program is locked and played synchronously.

1) Information playback: It can be played by stereo cameras and stereo TV non-line editing machines, and the stereo TV signals output by stereo cameras and stereo TV non-line editing machines can be recorded into VCD, DVD, high-definition DVD and other recorders with dual video input. Stereoscopic VCD, DVD, high-definition DVD disk. Then use VCD, DVD, high-definition DVD and other players with dual video output to play. The stereo TV signal output by the stereo TV non-linear editing machine can also be played by a hard disk video recorder with dual video input synchronously locked for recording and broadcasting. Long-distance broadcast through satellite, radio and television, network and other means to transmit in two channels in a wired or wireless manner or to transmit in a single channel after switching and mixing the two-channel signals (see the signal at point C in the screen-type stereoscopic TV picture) on the display terminal Resolved as a dual-channel signal display. Special attention should be paid to the switching and mixing of two-way signals - the video signal synthesized by A and B signals in the form of vertical grating is transmitted in a single channel (see the video signal signal at point C in the screen-type stereoscopic TV set) The method can directly record the signal at point C with ordinary video recorder, hard disk video recorder, VCD, DVD, high-definition DVD, etc. machine to see stereoscopic images. After the two-way signal is switched—the alternately changing video signal in the form of a vertical raster synthesized by the A and B signals is made into a stereo camera by a single-channel transmission method, and the all-in-one machine can record and play with a traditional recorder.

2) Three-dimensional information display:

Based on the principle of bionics, using modern technology, following the objective laws of human eyes to observe objects, simulating and manufacturing conditions that meet the most similar conditions of human eyes viewing actual objects, thus realizing the stereoscopic vision of images.

a. Glasses-type stereoscopic electric display (see Figure 3)

The combination of convex lenses and prisms transforms the scattered TV images and photos of A and B monitors (equivalent to the images seen by people's left and right eyes when shooting) into superimposed and superimposed images of people's left and right eyes through magnification and refraction magnified stereoscopic image. The way of superimposing and superimposing the magnified three-dimensional image into the left and right eyes of people is flexible: the positions of A and B monitors can be placed left and right, and the positions of A and B monitors can also be placed up and down through different convex lenses. The combined lens of the prism changes the images of the scattered A and B displays into superimposed and superimposed three-dimensional images of the left and right eyes of people through magnification and refraction.

b. Screen-type stereoscopic TV (see Figure 4)

The A and B two-way video signals are displayed on the TV screen in the form of vertical gratings (C, video signals) through electronic switches. The left and right eyes of the camera obtain images taken by the lens of the stereo camera A, B (left and right) respectively, thereby realizing the stereoscopic vision of the image.

Please refer to Figure 5 for the process of the two-way video signal processing: black and white bottom edges are added to the bottom of A and B images (usually the part not exposed under the TV screen), and the signal is changed to C signal after being switched by an electronic switch. The black and white raster at the bottom of the image is the bottom edge corresponding to the alternately changing video signal synthesized in the form of a vertical raster, and this signal is used as the basis for the change of the black and white raster. From the alternately changing video signal synthesized in the form of longitudinal raster, the black and white raster alternately changing signal A, B two-way signal and the position of the black and white raster on the screen are alternately changed, and the change is every change of one frame of image or A field of image A, B two-way signal and the black and white grating will change accordingly and display the corresponding position on the screen, so the image information picked up by the human eye is the complete information captured by the camera and will not be affected by the black and white grating loss.

The invention can be applied to computer network transmission, broadcast television, digital cable TV, DVD, VC two-way video signal high-definition DVD and other ways to transmit stereoscopic images and mobile phone network or wired stereoscopic videophone. It can also be used in military reconnaissance, public security, medical care, education, scientific research, astronomy, space exploration, art, advertisement, radio and television, electronic games, three-dimensional records of family life (video and photos), three-dimensional records of historical materials and archives, e-commerce, etc. various fields.

Claims (7)

1. A method for stereoscopic imaging, the steps of which are as follows: 1) Two groups of imaging devices are adopted, the focal length of their lenses is equivalent to the focal length of the human eyeball, and the distance between the CCD photosensitive sheets is between 60mm-70mm, and the center points of the respective imaging are always aligned with the subject to be photographed by automatic or manual control, generating two The channel uses a unified time base signal to scan the video signal synchronously; 2) The two-way video signals generated in step 1) are simultaneously recorded in two recorders or a recorder for synchronous recording of two-way signals and synchronous playback of two-way signals; 3) respectively or synchronously collect the video signal generated in step 2), carry out synchronous editing of the two-way signal, and lock and play the stereoscopic TV signal formed by the edited two-way video signal; or import the stereoscopic TV signal with dual frequency, Burned into a stereo disc by a dual video recorder; 4) The three-dimensional information is to use the combination lens mode of convex lens and prism, and the TV images and photos of the scattered two-way display are transformed into superimposed and superimposed three-dimensional images of people's left and right eyes through magnification and refraction for display; or the three-dimensional information is The two-way video signal is displayed on the TV screen in the form of a vertical grating through an electronic switch. The image passes through a black and white grating that is set at a corresponding distance in front of the TV screen and is synchronously switched with the electronic switch, so that the left and right eyes of the person can respectively obtain a stereoscopic image. The image captured by the lens to realize the stereoscopic vision of the image. 2. A stereoscopic imaging method as claimed in claim 1, characterized in that: long-distance broadcasting is via satellite, radio and television, network and other means in a wired or wireless way, dual-channel transmission or dual-channel signal switching and mixing It is transmitted in a single channel, and then interpreted as a dual-channel signal display on the display terminal. 3. A stereoscopic imaging method as claimed in claim 1, characterized in that: after the two-way signals are switched and mixed, the synthesized video signals alternately changing in the form of vertical gratings are signals output by a single channel, directly used Ordinary VCRs, hard disk recorders and CD recorders record and display directly on a TV screen with a black and white raster. 4. A stereoscopic imaging method as claimed in claim 3, characterized in that: the switching and mixing of the two-way signals is firstly to add black, The white bottom edge is switched by an electronic switch, and transformed into an alternately changing black and white bottom edge video signal synthesized by a vertical raster signal, and this signal is used as the basis for the change of the black and white raster. 5. A stereo imaging device, characterized in that it comprises: The dual-camera stereoscopic camera device consists of two groups of lenses with the same focal length as the human eyeball, a dual camera device with a distance between two CCD photosensitive sheets of 60-70MM, a movable base for fixing the two camera devices, and a control for the two camera devices Change the angle synchronously so that the axes of the two sets of lenses are always composed of a servo system that crosses the subject; Two or one image information recorder, when the recorder is a dual-channel signal record player, it is directly connected to the dual-channel signal output terminal of the camera device; when the recorder is an ordinary record player, its input terminal is connected to a dual-channel signal The output end of the switching synthesis circuit that alternately changes the signal of one line into one line of signals in the form of a longitudinal grating is connected, and the two input ends of the switching synthesis circuit are connected with the dual-machine stereoscopic camera device; Stereoscopic image display device, the display device is composed of a two-way signal display and a combination lens composed of a convex lens and a prism, or a display that displays alternately exchanged longitudinal grating signals and a corresponding distance in front of the display. Synchronously converted black and white raster composition. 6. A stereoscopic imaging device as claimed in claim 5, characterized in that: the servo system comprises a fixed base, a double camera base mounted on the fixed base through shaft movement, and a pair of ends connected to the double camera base respectively. The rear end is movably connected by the shaft, and the other end is movably fixed to the connecting rod and the screw control handle or the servo motor on the moving lead screw installed on the fixed base by the shaft. 7. A stereoscopic imaging method as claimed in claim 5, characterized in that the switching synthesis circuit is composed of a non-linear editing machine controlled by software or an electronic switching circuit.

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