CN102466962B - Stereoscopic image generation method and stereoscopic image generation system - Google Patents
Stereoscopic image generation method and stereoscopic image generation system Download PDFInfo
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Abstract
The invention discloses a stereoscopic image generation method and a stereoscopic image generation system. The stereoscopic image generation system comprises a left lens and a right lens. The method comprises the following steps of: shooting a left-eye image and a right-eye image by utilizing the left lens and the right lenses respectively; analyzing the left-eye image and the right-eye image to find a left-eye superimposed image and a right-eye superimposed image which are superimposed; calculating color parameters of the left-eye superimposed image and the right-eye superimposed image respectively; regulating color parameters of the whole left-eye image and the whole right-eye image according to the color parameters of the left-eye superimposed image and the right-eye superimposed image to make the color parameters of the left-eye superimposed image and the right-eye superimposed image consistent; and finally outputting the regulated left-eye image and the regulated right-eye image as a stereoscopic image.
Description
Technical field
The present invention relates to a kind of image generating method and imaging system, particularly relate to a kind of stereoscopic image generation method and stereo imaging system.
Background technology
Stereoscopic camera is made up of the twin-lens that specification is identical, and the spacing distance of this twin-lens is about 7.7 centimeters, in order to simulate the actual range of human eye.The parameter such as focal length, aperture, shutter of this twin-lens is then controlled by the processor of stereoscopic camera, and via the triggering of cable release, and can shoot the same area but the different image in visual angle, namely this image is the image in order to simulating human right and left eyes.
The frequency Alternation Display that the right and left eyes image taken by stereoscopic camera persists to exceed human eye vision via display device, and collocation is worn over the switching of the liquid crystal shutter glasses of human head, makes the right and left eyes of the mankind can watch corresponding right and left eyes image.After this right and left eyes image is transmitted to cerebral cortex, namely can be fused into single image by cortical centre.Right and left eyes image captured by stereoscopic camera has a little difference in angle, and the image therefore formed on the retina also can have certain parallax, and the mankind merge via cortical centre the image that in two, visual angle is different, namely can produce stereoscopic sensation.
Although the left and right camera lens of stereoscopic camera is the image using identical parameter to take the same area, but because how many OPTICAL SENSORS in two camera lenses or camera lens can exist little bit different, even if when controlled parameter and used image pickup method are all identical, image out captured by stereoscopic camera still can difference to some extent in presenting of brightness or color, and this difference will cause beholder two depending on image mate not, and then have influence on the imaging effect of stereopsis.
Summary of the invention
The invention provides a kind of stereoscopic image generation method, the brightness of the right and left eyes image captured by stereo imaging system can be made consistent with colourity.
The invention provides a kind of stereoscopic image generation method, be applicable to the stereo imaging system comprising left camera lens and right camera lens.The method utilizes left camera lens and right lens shooting left-eye images and right-eye image respectively, then this left-eye images and right-eye image is analyzed, to find out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image respectively, then the color parameter of left eye superimposed image and right eye superimposed image is calculated respectively, and adjust the left-eye images of whole and the color parameter of right-eye image according to this, make left eye superimposed image consistent with the color parameter of right eye superimposed image, last then left-eye images after exporting adjustment and right-eye image, using as stereopsis.
In one embodiment of this invention, above-mentioned analysis left-eye images and right-eye image, the multiple features captured in left-eye images and right-eye image are comprised with the step finding out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image respectively, and according to the region that same characteristic features in these features is contained, distinguish the left eye superimposed image in left-eye images and the right eye superimposed image in right-eye image.
In one embodiment of this invention, above-mentioned analysis left-eye images and right-eye image, comprise the size of the image sensor according to the lens pitch between left camera lens and right camera lens and left camera lens and right camera lens with the step finding out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image respectively, find out left eye superimposed image and right eye superimposed image.
In one embodiment of this invention, the left-eye images that above-mentioned adjustment is whole and the color parameter of right-eye image, make the left eye superimposed image step consistent with the color parameter of right eye superimposed image comprise with left-eye images and right-eye image one of them for benchmark, adjust the color parameter of another image, make left eye superimposed image consistent with the color parameter of right eye superimposed image.
In one embodiment of this invention, the left-eye images that above-mentioned adjustment is whole and the color parameter of right-eye image, the left eye superimposed image step consistent with the color parameter of right eye superimposed image is made to comprise mean value and the standard deviation of the color parameter calculating left eye superimposed image and right eye superimposed image, and adjust the left-eye images of whole and the color parameter of right-eye image, make it consistent with calculated mean value and standard deviation.
In one embodiment of this invention, the above-mentioned step calculating the color parameter of left eye superimposed image and right eye superimposed image respectively comprises the brightness (Y) and chromatic component (Cb, Cr) that calculate left eye superimposed image and right eye superimposed image respectively.
In one embodiment of this invention, the left-eye images that above-mentioned adjustment is whole and the color parameter of right-eye image, the left eye superimposed image step consistent with the color parameter of right eye superimposed image is comprised and adjusts the left-eye images of whole and the brightness of right-eye image, make left eye superimposed image consistent with the brightness of right eye superimposed image, then adjust the left-eye images of whole and the colourity of right-eye image, make left eye superimposed image consistent with the colourity of right eye superimposed image.
In one embodiment of this invention, the above-mentioned step calculating the color parameter of left eye superimposed image and right eye superimposed image respectively comprises red, green, blue (RGB) chromatic component calculating left eye superimposed image and right eye superimposed image respectively.
In one embodiment of this invention, the left-eye images that above-mentioned adjustment is whole and the color parameter of right-eye image, make the left eye superimposed image step consistent with the color parameter of right eye superimposed image comprise red, green, blue (RGB) colourity of left-eye images and the right-eye image adjusting whole respectively, make left eye superimposed image consistent with the red, green, blue colourity of right eye superimposed image.
The invention provides a kind of stereo imaging system, it comprises left camera lens, right camera lens and processing unit.Wherein, left camera lens is in order to take left-eye images, and right camera lens, in order to take right-eye image, has a lens pitch between this left camera lens and right camera lens.Processing unit couples left camera lens and right camera lens, and in order to analyze left-eye images and right-eye image, to find out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image respectively, and calculate a color parameter of left eye superimposed image and right eye superimposed image respectively, adjust the color parameter of whole left-eye images and right-eye image according to this, make left eye superimposed image consistent with the color parameter of right eye superimposed image, and the left-eye images exported after adjustment and right-eye image, using as stereopsis.
Based on above-mentioned, stereoscopic image generation method of the present invention and stereo imaging system are by calculating the color parameter of the overlapping region of right and left eyes image captured by stereo imaging system, and in order to the deviation of the brightness or colourity that correct right and left eyes image whole image, and the right and left eyes image that brightness or colourity matches each other can be obtained.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the calcspar according to the stereo imaging system shown by one embodiment of the invention.
Fig. 2 is the process flow diagram according to the stereoscopic image generation method shown by one embodiment of the invention.
Fig. 3 (a), Fig. 3 (b) are the examples according to the stereoscopic image generation method shown by one embodiment of the invention.
Fig. 4 (a), Fig. 4 (b) are the examples according to the stereoscopic image generation method shown by one embodiment of the invention.
Fig. 5 is the process flow diagram according to the stereoscopic image generation method shown by one embodiment of the invention.
Fig. 6 is the process flow diagram according to the stereoscopic image generation method shown by one embodiment of the invention.
Main Reference Numerals illustrates:
100: stereo imaging system; 110: left camera lens;
120: right camera lens;
S210 ~ S250: the step of the stereoscopic image generation method of one embodiment of the invention;
S510 ~ S560: the step of the stereoscopic image generation method of one embodiment of the invention;
S610 ~ S650: the step of the stereoscopic image generation method of one embodiment of the invention.
Embodiment
Very large one piece of region is had to be equitant region each other in the middle of right and left eyes image captured by stereo imaging system, although the object in this overlapping region can have a little aberration because of the difference of right and left eyes lens shooting angle, substantially overall content is identical.Therefore, to solve brightness between right and left eyes image or chromaticity distortion, to correct for this overlapping region, the image with identical content thing exactly in theory, the best results of gained.And the adjustment done this overlapping region image is extended to whole right and left eyes image, finally can obtain brightness, stereopsis that colourity all matches.
In detail, Fig. 1 is the calcspar according to the stereo imaging system shown by one embodiment of the invention.Please refer to Fig. 1, the stereo imaging system 100 of the present embodiment is such as stereoscopic camera, and it comprises left camera lens 110, right camera lens 120 and processing unit 130.
All be configured with photo-sensitive cell (not shown) in left camera lens 110 and right camera lens 120, in order to sense the light intensity entering left camera lens 110 and right camera lens 120 respectively, and then produce left-eye images and right-eye image.Described photo-sensitive cell is such as charge coupled cell (Charge Coupled Device, CCD), Complimentary Metal-Oxide semiconductor (Complementary Metal-Oxide Semiconductor, CMOS) element or other elements, do not limit at this.In addition, between left camera lens 110 and right camera lens 120, such as there is the lens pitch being about 77 millimeters, and can distance between Reality simulation human eye.
Processing unit 130 is such as CPU (central processing unit) (Central Processing Unit, CPU), or the microprocessor of other programmables (Microprocessor), digital signal processor (Digital SignalProcessor, DSP), programmable controller, Application Specific Integrated Circuit (Application SpecificIntegrated Circuits, ASIC), programmable logical unit (Programmable Logic Device, or other similar devices PLD), it couples left camera lens 110 and right camera lens 120, and correct in order to the left-eye images that captures above-mentioned left camera lens 110 and right camera lens 120 and right-eye image, with the stereopsis that output brightness and colourity match.
In detail, Fig. 2 is the process flow diagram according to the stereoscopic image generation method shown by one embodiment of the invention.Referring to Fig. 1 and Fig. 2, the method of the present embodiment is applicable to the stereo imaging system 100 of Fig. 1, be suitable for when user utilizes stereo imaging system 100 shooting stereo image, correct the difference in brightness and colourity between left-eye images and right-eye image, to produce the stereopsis that color matches.Below namely to arrange in pairs or groups each item of stereo imaging system 100 of Fig. 1, the detailed step of the present embodiment method be described:
First, left camera lens 110 and right camera lens 120 is utilized to take left-eye images and right-eye image (step S210) respectively.Wherein, left camera lens 110 and right camera lens 120 are such as adopt identical parameter filmed image, and described parameter comprises focal length, aperture, shutter, white balance etc., does not limit at this.
Then, left-eye images and right-eye image is analyzed by processing unit 130, to find out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image (step S220) respectively.Wherein, the multiple features in processing unit 130 such as fechtable left-eye images and right-eye image, and according to the region that same characteristic features in these features is contained, distinguish the left eye superimposed image in left-eye images and the right eye superimposed image in right-eye image.On the other hand, processing unit 130 also can find out left eye superimposed image and right eye superimposed image according to the size of the image sensor of the lens pitch between left camera lens and right camera lens and left camera lens and right camera lens.
After finding out left eye superimposed image and right eye superimposed image, namely processing unit 130 calculates the color parameter (step S230) of left eye superimposed image and right eye superimposed image respectively.Wherein, processing unit 130 such as can calculate brightness (Y) and the chromatic component (Cb, Cr) of left eye superimposed image and right eye superimposed image respectively, or calculate red, green, blue (RGB) chromatic component of left eye superimposed image and right eye superimposed image, with the foundation as follow-up correction.
According to the color parameter of above-mentioned calculating, processing unit 130 can adjust the left-eye images of whole and the color parameter of right-eye image further, and make left eye superimposed image consistent with the color parameter of right eye superimposed image (step S240), finally then the left-eye images after adjustment and right-eye image are exported as stereopsis (step S250).In detail, because left eye superimposed image is identical with the content in right eye superimposed image, and the shooting environmental of two images is also identical, therefore the color parameter such as the brightness of its image taking out, colourity ought to be identical.Accordingly, namely the present embodiment carries out adjusting and correcting for the right and left eyes image in this overlapping region, and the scope of adjustment is extended to whole right and left eyes image, make no matter the right and left eyes image after final adjustment is in overlapping region or in Non-overlapping Domain, its brightness presented or color are unanimously.
It should be noted that, the adjustment mode of above-mentioned right and left eyes image be such as with left-eye images and right-eye image one of them be benchmark or with both mean value for benchmark adjusts, do not limit at this.In detail, left-eye images and right-eye image one of them can be adjusted the color parameter of another image by processing unit 130 as benchmark, and make left eye superimposed image consistent with the color parameter of right eye superimposed image.On the other hand, processing unit 130 also can calculate mean value and the standard deviation of the color parameter of left eye superimposed image and right eye superimposed image, adjust the left-eye images of whole and the color parameter of right-eye image more accordingly, make the color parameter after its adjustment consistent with calculated mean value and standard deviation.
For example, Fig. 3 (a), Fig. 3 (b), Fig. 4 (a), Fig. 4 (b) are the examples according to the stereoscopic image generation method shown by one embodiment of the invention.Wherein, Fig. 3 (a), Fig. 3 (b) represent left-eye images captured by stereo imaging system and right-eye image respectively, and Fig. 4 (a), Fig. 4 (b) then show the color range distribution plan of all pixels in the overlapping region of this left-eye images and right-eye image respectively.From Fig. 3 (a), Fig. 3 (b), the brightness of left-eye images and right-eye image has a little difference, and it is caused inharmonious that its reason may be that each image processes separately.If the color range distribution plan of analysis chart 4 (a), Fig. 4 (b) is known, the average brightness of left-eye images is higher, therefore can judge that left-eye images is partially bright.Now by simply the brightness of right-eye image being heightened, or the brightness of left-eye images is turned down, and be in harmonious proportion the difference of brightness between the two.Or, also the brightness of left-eye images and right-eye image can be unified the mean value being adjusted to both, identical effect can be obtained equally.
Except the difference of brightness, if consider the difference in colourity again, the present invention also can calculate it at different color chromatic value spatially for right and left eyes image respectively, and is in harmonious proportion the color distortion between right and left eyes image in conjunction with above-mentioned Regulation mechanism, thus obtains preferably stereopsis.Below then describe in detail for an embodiment again.
Fig. 5 is the process flow diagram according to the stereoscopic image generation method shown by one embodiment of the invention.Referring to Fig. 1 and Fig. 5, the method of the present embodiment is applicable to the stereo imaging system 100 of Fig. 1, be suitable for when user utilizes stereo imaging system 100 shooting stereo image, by calculating brightness (Y) and the chromatic component (Cb, Cr) of the overlapping region of left-eye images and right-eye image, correct the difference in brightness and colourity between left-eye images and right-eye image according to this, to produce the stereopsis that color matches.Below namely to arrange in pairs or groups each item of stereo imaging system 100 of Fig. 1, the detailed step of the present embodiment method be described:
First, left camera lens 110 and right camera lens 120 is utilized to take left-eye images and right-eye image (step S510) respectively.Then, left-eye images and right-eye image is analyzed by processing unit 130, to find out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image (step S520) respectively.The detailed content of above step S510 ~ S520 and the step S210 of previous embodiment ~ S220 same or similar, therefore not repeat them here.
With previous embodiment unlike, the present embodiment, after finding out left eye superimposed image and right eye superimposed image, is calculated brightness (Y) and chromatic component (Cb, Cr) (the step S530) of left eye superimposed image and right eye superimposed image respectively by processing unit 130.Then, processing unit 130, namely according to the brightness of calculated right and left eyes image, adjusts the left-eye images of whole and the brightness of right-eye image, makes left eye superimposed image consistent with the brightness of right eye superimposed image (step S540).Then, processing unit 130, again according to the colourity of calculated right and left eyes image, adjusts the colourity of whole left-eye images and right-eye image, makes left eye superimposed image consistent with the colourity of right eye superimposed image (step S550).Last then using adjustment after left-eye images and right-eye image export as stereopsis (step S560).
By above-mentioned stage by stage to the method that brightness and colourity adjust, progressively adjust brightness and the colourity of left-eye images and right-eye image, finally can obtain the stereopsis of brightness and colourity mediation.
On the other hand, the present invention also can directly progressively adjust for the chromatic value on other color spaces, after treating that all colourity all adjusts, can obtain the stereopsis of brightness and colourity mediation equally, then describe in detail for an embodiment more below.
Fig. 6 is the process flow diagram according to the stereoscopic image generation method shown by one embodiment of the invention.Referring to Fig. 1 and Fig. 6, the method of the present embodiment is applicable to the stereo imaging system 100 of Fig. 1, be suitable for when user utilizes stereo imaging system 100 shooting stereo image, by calculating red, green, blue (RGB) chromatic component of the overlapping region of left-eye images and right-eye image, correct the difference in brightness and colourity between left-eye images and right-eye image according to this, to produce the stereopsis that color matches.Below namely to arrange in pairs or groups each item of stereo imaging system 100 of Fig. 1, the detailed step of the present embodiment method be described:
First, left camera lens 110 and right camera lens 120 is utilized to take left-eye images and right-eye image (step S610) respectively.Then, left-eye images and right-eye image is analyzed by processing unit 130, to find out left eye superimposed image overlapped in left-eye images and right-eye image and right eye superimposed image (step S620) respectively.The detailed content of above step S610 ~ S620 and the step S210 of previous embodiment ~ S220 same or similar, therefore not repeat them here.
With previous embodiment unlike, the present embodiment is after finding out left eye superimposed image and right eye superimposed image, red, green, blue (RGB) chromatic component (step S630) of left eye superimposed image and right eye superimposed image is calculated respectively by processing unit 130, and adjust the red, green, blue colourity of whole left-eye images and right-eye image accordingly respectively, make left eye superimposed image consistent with the red, green, blue colourity of right eye superimposed image (step S640).Last then using adjustment after left-eye images and right-eye image export as stereopsis (step S650).
For example, suppose that following data are red (R), green (G) of the right and left eyes image that processing unit 130 calculates, the mean value of blue (B) colourity and standard deviation:
Left-eye images (R): mean value 144.8, standard deviation 53;
Left-eye images (G): mean value 98, standard deviation 45;
Left-eye images (B): mean value 53, standard deviation 37;
Right-eye image (R): mean value 137, standard deviation 50;
Right-eye image (G): mean value 92.7, standard deviation 43;
Right-eye image (B): mean value 61.9, standard deviation 43.
Inconsistent by the color distribution on above-mentioned data known right and left eyes image both sides.Suppose that processing unit 130 is on average used as benchmark to adjust with two images, if the mean value of the reference images newly calculated is X_u, standard deviation is X_std; The mean value of right and left eyes image to be adjusted is M_u, standard deviation is M_std, be then the pixel of M for original pixel value in right and left eyes image, the pixel value Y after its adjustment and the relational expression of aforementioned parameters as follows:
Y＝(M-M_u)×X_std/M_std+X_u
Chromatic value after processing unit 130 adopts above-mentioned formulae discovery to go out adjustment, and red, green, blue three kinds of colourities are adjusted respectively, the brightness of right and left eyes image entirety can be made to be consistent with colourity, and then to improve the quality of stereopsis.And except above-mentioned chroma conversion mode, the present invention also can adopt the mode of image Histogram Matching (histogram matching) to adjust the color parameter of whole right and left eyes image, similar effect can be reached equally.
In sum, stereoscopic image generation method of the present invention and stereo imaging system by image in the overlapping region of analyzing right and left eyes image in different color COLOR COMPOSITION THROUGH DISTRIBUTION spatially, adjust brightness or the colourity of whole right and left eyes image according to this, make the brightness of two images and color reach consistent, and effectively can improve the quality of stereopsis.
Although the present invention discloses as above with embodiment; but it is also not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; can do to change arbitrarily or equivalent replacement, therefore the scope that protection scope of the present invention should define with the application's claim is as the criterion.
Claims (5)
1. a stereoscopic image generation method, be applicable to the stereo imaging system comprising a left camera lens and a right camera lens, the method comprises the following steps:
Utilize this left camera lens and this right lens shooting one left-eye images and a right-eye image respectively;
Analyze this left-eye images and this right-eye image, to find out a left eye superimposed image overlapped in this left-eye images and this right-eye image and a right eye superimposed image respectively;
Calculate one first mean value and one first standard deviation of the chrominance component of this left eye superimposed image, and calculate one second mean value and one second standard deviation of this chromatic component of this right eye superimposed image;
According to this first mean value and this second mean value calculation 1 the 3rd mean value, and calculate one the 3rd standard deviation according to this first standard deviation and this second standard deviation;
Each pixel in this left-eye images:
Adjust one first chromatic value of this chromatic component of this pixel according to following formula, wherein this first chromatic value is the chromatic value of this chromatic component of this pixel,
Y1＝(M1–M1_u)×X_std/M1_std+X_u，
Wherein Y1 is this first chromatic value after adjustment, and M1 is this first chromatic value, and M1_u is this first mean value, and X_std is the 3rd standard deviation, and M1_std is this first standard deviation, and X_u is the 3rd mean value;
Each pixel in this right-eye image:
Adjust one second chromatic value of this chromatic component of this pixel according to following formula, wherein this second chromatic value is the chromatic value of this chromatic component of this pixel,
Y2＝(M2–M2_u)×X_std/M2_std+X_u，
Wherein Y2 is this second chromatic value after adjustment, and M2 is this second chromatic value, and M2_u is this second mean value, and M2_std is this second standard deviation;
And
Export this left-eye images after adjustment and this right-eye image, using as a stereopsis.
2. stereoscopic image generation method according to claim 1, wherein analyzes this left-eye images and this right-eye image, comprises with the step finding out this left eye superimposed image overlapped in this left-eye images and this right-eye image and this right eye superimposed image respectively:
Capture the multiple features in this left-eye images and this right-eye image; And
According to the region that same characteristic features in described feature is contained, distinguish this left eye superimposed image in this left-eye images and this right eye superimposed image in this right-eye image.
3. stereoscopic image generation method according to claim 1, wherein analyzes this left-eye images and this right-eye image, comprises with the step finding out this left eye superimposed image overlapped in this left-eye images and this right-eye image and this right eye superimposed image respectively:
According to a size of an image sensor of the lens pitch between this left camera lens and this right camera lens and this left camera lens and this right camera lens, find out this left eye superimposed image and this right eye superimposed image.
4. stereoscopic image generation method according to claim 1, this left-eye images wherein after exporting adjustment and this right-eye image, before the step as this stereopsis, the method more comprises:
Adjust this left-eye images of whole and the brightness of this right-eye image, make this left eye superimposed image consistent with the brightness of this right eye superimposed image.
5. a stereo imaging system, comprising:
One left camera lens, takes a left-eye images;
One right camera lens, takes a right-eye image, and wherein this left camera lens and this right camera lens have a lens pitch; And
One processing unit, couple this left camera lens and this right camera lens, analyze this left-eye images and this right-eye image, to find out a left eye superimposed image overlapped in this left-eye images and this right-eye image and a right eye superimposed image respectively, calculate one first mean value and one first standard deviation of the chrominance component of this left eye superimposed image, and calculate one second mean value and one second standard deviation of this chromatic component of this right eye superimposed image, according to this first mean value and this second mean value calculation 1 the 3rd mean value, and calculate one the 3rd standard deviation according to this first standard deviation and this second standard deviation,
Wherein this processing unit is more for each pixel in this left-eye images, adjusts one first chromatic value of this chromatic component of this pixel according to following formula, and wherein this first chromatic value is the chromatic value of this chromatic component of this this pixel,
Y1＝(M1–M1_u)×X_std/M1_std+X_u，
Wherein Y1 is this first chromatic value after adjustment, and M1 is this first chromatic value, and M1_u is this first mean value, and X_std is the 3rd standard deviation, and M1_std is this first standard deviation, and X_u is the 3rd mean value;
Wherein this processing unit is more for each pixel in this right-eye image, and adjust this chromatic component one second chromatic value of this pixel according to following formula, wherein this second chromatic value is the chromatic value of this chromatic component of this pixel,
Y2＝(M2–M2_u)×X_std/M2_std+X_u，
Wherein Y2 is this second chromatic value after adjustment, and M2 is this second chromatic value, and M2_u is this second mean value, and M2_std is this second standard deviation,
Wherein this processing unit more exports this left-eye images after adjustment and this right-eye image, using as a stereopsis.
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| FR2354013A1 (en) * | 1976-06-01 | 1977-12-30 | Leterme Georges | Cinema or TV stereoscopic image production - uses two oppositely polarised films covering left and right images viewed alternately, through polarised spectacles |
| FR2540258A1 (en) * | 1983-01-31 | 1984-08-03 | Fieffe Gerard | Method and device for the restoration of three-dimensional colour images |
| CN1165977A (en) * | 1996-05-21 | 1997-11-26 | 方振生 | Method for shooting stereo image and its dual-color filter |
| EP1101362B1 (en) * | 1999-05-26 | 2006-10-04 | DaimlerChrysler AG | Device for projecting a colour image |
| WO2004081863A2 (en) * | 2003-03-12 | 2004-09-23 | Siegbert Hentschke | Autostereoscopic reproduction system for 3d displays |
| CN1904723A (en) * | 2005-07-29 | 2007-01-31 | 陈波 | Method and apparatus for synthesizing 3-D cartoon picture |
| CN201464798U (en) * | 2009-07-29 | 2010-05-12 | 上海华博数码科技有限公司 | Three-dimensional projectors |
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| CN102466962A (en) | 2012-05-23 |
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