CN102427549A - Method for reducing frame crosstalk of 3D television - Google Patents
Method for reducing frame crosstalk of 3D television Download PDFInfo
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- CN102427549A CN102427549A CN2011104031043A CN201110403104A CN102427549A CN 102427549 A CN102427549 A CN 102427549A CN 2011104031043 A CN2011104031043 A CN 2011104031043A CN 201110403104 A CN201110403104 A CN 201110403104A CN 102427549 A CN102427549 A CN 102427549A
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Abstract
The invention provides a method for reducing frame crosstalk of a 3D television. The method comprises the following steps of: carrying out odd or even line separation on each video frame to expand each video frame into two video frames; increasing the refresh rate of a display system by over one time; and outputting the expanded video frame image. The synchronous display of a 3D two-frame image corresponding to the parity line is changed into asynchronous display, so that the crosstalk at the junction of the parity lines is effectively avoided, the thorough separation of an image signal optical path system transmitted by the parity line is realized, the 3D display effect is effectively improved, the 3D sense judgment of a user is enhanced and the comfortableness for watching is improved.
Description
Technical field
The present invention relates to 3D Display Technique field, the method that the particularly a kind of 3D of minimizing picture is crosstalked.
Technical background
Polarization type 3D technology also is polarization type 3D technology, and English is Polarized 3D, and what be used is the passive type polaroid glasses.The image effect of polarization type 3D technology is better than aberration formula, and system realizes that cost is not high, and the glasses cost is low, and application prospect is good.
Polarization type 3D utilizes light to have the principle of " direction of vibration " to decompose original image; Earlier through being divided into image vertically to polarised light and level to polarised light two group of pictures; Adopt the polarized lenses of different polarization direction then about the 3D glasses respectively; People's right and left eyes just can receive two group of pictures like this, passes through brain compound stereoscopic image again.
At present in polarization type 3D system, two kinds of application technologies of wired inclined to one side formula 3D technology and the inclined to one side formula 3D technology of circle, the inclined to one side formula 3D technology of line has angle limitations, generally only is applied in cinema, and more is to use the inclined to one side formula 3D technology of circle to normal domestic use.
The inclined to one side formula 3D technology of circle is on the inclined to one side formula technology of line before, to add one deck phasic difference mould again; Because the absorption axes of light polarizing film and the slow axis of phasic difference diaphragm become special angle can form rotatory polarization or elliptical polarized light to the certain orientation rotation, can change linearly polarized light before into rotatory polarization like this.
General polarization type 3D technology all is with the corresponding respectively different picture of two frames that shows of the parity rows of screen; There is certain parallax in the different picture of this two frame; Through passive glasses, user's right and left eyes receives corresponding different pictures simultaneously. handle the solid impression that is deformed into 3D through brain like this.
Described phasic difference film and other blooming piece are not distinguished partition to parity rows;, parity rows can must occur influencing each other like this when showing two frame different pictures owing to optical characteristics; Generation is crosstalked, i.e. " crosstalk " is to a maximum problem of 3D image quality lethality.The reason that produces of crosstalking is very simple; Be exactly the thorough inadequately of right and left eyes picture separation; Cause the former picture that should get into left eye to be seen by right eye; The former picture that should get into right eye is seen by left eye, thereby there is ghost image in the 3D image that causes spectators to see, crosstalks and is become " ghost " by the insider.
In sum since the corresponding two frame pictures that form of parity rows institute since through some blooming pieces because optical characteristics must occur separating not thorough, and then " picture ghost " crosstalk phenomenon takes place, influence user's viewing experience and comfort level greatly.
Summary of the invention
The object of the present invention is to provide a kind of two corresponding two field pictures of polarization type 3D parity rows method that picture that occur is crosstalked through separation behind the blooming piece is thorough that reduces.
3D TV of the present invention reduces the method that picture is crosstalked, and its step is following:
ⅰ, signal input module receive the 3D vision signal;
ⅱ, 3D processing module are carried out the parity rows separation to each frame of video, promptly separate two two field pictures of the corresponding 3D rendering of parity rows;
ⅲ, 3D processing module expand to two frame of video with each frame of video:
First frame of video is the strange capable image of the former frame of video of row reservation very, and the idol row is the grey row of output all; Second strange row of frame of video all exported the ash row, the idol row image of the former frame of video of idol row reservation;
ⅳ, 3D processing module are with the frame frequency lifting of display system more than one times;
Video frame images after ⅴ, the 3D processing module output expansion, the synchronous display mode of 3D rendering that former parity rows is corresponding is changed into asynchronous display mode, and the institute's images displayed frame of promptly very going realizes that with idol row images displayed frame timesharing shows.
Described 3D vision signal comprises two picture video signals.
Among the described step ⅲ; When the 3D processing module expands to two frame of video with each frame of video; Ash row set-up mode comprise be set to black row or for the ash of adjacent two frame video image mean flow rates capable; Or the viewing area is divided into different blocks, the capable brightness of the ash that different blocks is inserted is the mean flow rate of adjacent two frame video images of this block.
The present invention adopts above method; Through expanding one times of number of image frames; 3D two two field pictures that parity rows is corresponding are asynchronous demonstration by synchronous display change, have effectively avoided crosstalking in parity rows intersection, realize that the picture signal light path system that parity rows transmitted thoroughly separates; Effectively improve the 3D display effect, level of comfort is watched in the 3D sensory experience and the raising that strengthen the user.
Description of drawings
Below in conjunction with accompanying drawing, specific embodiments of the invention elaborates:
Fig. 1 is the structural representation of present rotatory polarization formula 3D display system;
Fig. 2 is the system block diagram of general 3D TV;
Fig. 3 is the strange row demonstration sketch map that the present invention reduces the picture crosstalk method;
Fig. 4 is the idol row demonstration sketch map that the present invention reduces the picture crosstalk method.
Embodiment
3D TV of the present invention reduces the method that picture is crosstalked, and its step is following:
ⅰ, signal input module receive the 3D vision signal;
ⅱ, 3D processing module are carried out the parity rows separation to each frame of video, promptly separate two two field pictures of the corresponding 3D rendering of parity rows;
ⅲ, 3D processing module expand to two frame of video with each frame of video:
First frame of video is the strange capable image of the former frame of video of row reservation very, and the idol row is the grey row of output all; Second strange row of frame of video all exported the ash row, the idol row image of the former frame of video of idol row reservation;
ⅳ, 3D processing module are with the frame frequency lifting of display system more than one times;
Video frame images after ⅴ, the 3D processing module output expansion, the synchronous display mode of 3D rendering that former parity rows is corresponding is changed into asynchronous display mode, and the institute's images displayed frame of promptly very going realizes that with idol row images displayed frame timesharing shows.
Among the described step ⅲ; When the 3D processing module expands to two frame of video with each frame of video; Ash row set-up mode comprise be set to black row or for the ash of adjacent two frame video image mean flow rates capable; Or the viewing area is divided into different blocks, the capable brightness of the ash that different blocks is inserted is the mean flow rate of adjacent two frame video images of this block.
Elaborate below.
What traditional polarization type 3D technology adopted is synchronous demonstration, and promptly two frame pictures show simultaneously, and two frame pictures are divided into parity rows and show on screen; As shown in Figure 1, odd-numbered line (corresponding 1,3; 5 ... OK) show a two field picture; Even number line (corresponding 2,4,6 ... OK) show an other two field picture.
The present invention promotes present display refresh rates more than one times, and promptly the picture of per second kind screen display promotes more than one times, and corresponding like this demonstration two frame pictures are when odd-numbered line shows; Even number line does not show that this has only odd-numbered line showing constantly like this, a corresponding frame picture that shows that odd-numbered line shows; Equally when even number line shows; Odd-numbered line does not show to have only this moment even number line showing that correspondence has only a frame picture that shows that even number line shows.
The system block diagram of general 3D TV is shown in Fig. 2, and each module declaration is following:
Signal input module 1: to television system can be video signal input section such as HDMI, VGA, AV, RF TV signal;
Video processing module 2: the signal of signal input module 1 input is carried out the first order handle, the main A/D conversion of accomplishing signal, signal sampling, decoding, processings such as Scaler and encode and become the laggard line output of LVDS signal;
Data cache module 3: carry out processing such as encoding and decoding and Scaler at 2 pairs of signals of video processing module and need do the mass data computing, need the corresponding data cache module 3 of collocation equally;
Memory module 4: the working procedure data file of store video processing module 2 and user setup data information etc.;
3D processing module 5: be the second level processing module of system to vision signal, the video data signal that the front end first order is handled extracts the processing operations with 3D, the output of encoding again again;
Display module 6: be LCDs, the vision signal of front end handled the back show.
Described 3D processing module 5 can be a standalone module, can also directly be integrated in the video processing module 2 of front end.
Embodiment 1: the application in the 3D TV pick-up attacnment.
Be that to rise to 120Hz be that example describes for the display system of 60Hz below with the refresh rate.The refresh rate of common 60Hz is the display module per second and shows 60 two field picture pictures; Look frame with an odd-numbered line demonstration 3D picture left side, even number line shows that it is that example is set forth that frame is looked on the 3D picture right side, and is as shown in Figure 1; About look frame synchronization and show; Be that per second is seen 60 two field pictures off by the 3D processing module in polarization type 3D technology, the every frame of this image is two pictures of the corresponding demonstration of parity rows, and crosstalk phenomenon will appear in so synchronous demonstration.
The number of image frames that present embodiment will be delivered to display module promotes one times, and promptly per second shows 120 two field pictures.
Respectively to see 60 two field pictures off, processing is to change two two field pictures that show synchronously into asynchronous the demonstration like this with parity rows, makes strange capable institute images displayed frame and the asynchronous demonstration of idol row images displayed frame; As shown in Figure 3; Strange row shows a two field picture, and the two field picture picture is looked on a corresponding left side, and the idol row is the black frame of output all; Like this in this time only the picture frame of odd row be shown; The also only odd capable image that same receiving terminal receives, the picture frame that the receiving terminal correspondence has only a left side to look frame is received, the black full picture of even number behavior; In the next demonstration time, as shown in Figure 4 equally, have only the picture frame of even number line to be shown; The two field picture picture is looked on the corresponding right side; The while odd-numbered line is the black frame of output all, and the receiving terminal correspondence has only the picture frame of even number line to be received like this, and promptly the right side is looked the two field picture picture and accomplished reception; The black full picture of odd number behavior; Parity rows realizes that timesharing transmits that frame is looked on two two field picture left sides and frame is looked on the right side like this, and the light of parity rows image mutual crosstalk phenomenon can not occur, effectively overcome parity rows corresponding about two two field pictures the formed linear polarization light of light through blooming piece because optical characteristics will inevitably the phase mutual interference occur at intersection the separation of two frame pictures occurs and thoroughly do not cause two two field pictures to occur crosstalking; Improve the sensory experience that 3D shows, promote user's viewing greatly and experience and comfort level.
Describe embodiments of the invention 1 below in conjunction with Fig. 2, system receives the 3D vision signal from signal input module 1; Processing such as process video processing module 2 is handled, and accomplishes the A/D conversion at video processing module 2, and signal sampling is decoded, Scaler and coding become the laggard line output of LVDS signal, are sent to 3D processing module 5; The LVDS signal that 5 pairs of front ends of 3D processing module are brought is handled, and changes two two field pictures that show synchronously into asynchronous the demonstration, and simultaneously two frame signals is carried out parity rows and separate output, with one times of frame frequency lifting.Promptly in the first demonstration time, strange row shows a two field picture, and the idol row is the black frame of output all; Like this in this time only the picture frame of odd row be shown; The also only odd capable image that same receiving terminal receives, the receiving terminal correspondence has only the picture frame of odd-numbered line to be received, the black full picture of even number behavior; In the next demonstration time, have only the picture frame of even number line to be shown equally; Same receiving terminal receives also has only the even number line image, and the receiving terminal correspondence has only the picture frame of even number line to be received, the black full picture of odd number behavior.Picture frame after the processing is encoded once more and is formed the LVDS vision signal.Be sent to display module 6 through 3D processing module 5 handled LVDS signals and carry out processes and displays.
Embodiment 2: the application in double-image display device.
According to the 3D displaying principle; Show the needed two frame pictures of corresponding right and left eyes simultaneously, this two frames picture also can show two frame different images from different signal sources so simultaneously in display module certainly; The picture frame signal in two unlike signal sources is processed the back and exports simultaneously with parity rows; Parity rows is corresponding various signals source images respectively, must occur cross-interference issue equally like this, utilizes the present invention to reduce the picture crosstalk method and handles; Timesharing is exported to the parity rows signal, can effectively improve this problem.
Based on explained above, when strange row demonstration one two field picture, idol row all output is deceived frame, and the idol row shows a two field picture in the next demonstration time, the strange black frame of all output of going.The parity rows that does not show that is set forth in should be not limited to black frame, also can be grey frame.
Preferably, the mean flow rate that the grey frame brightness of the image that is inserted can be two frame video images, special can be divided into different blocks with the viewing area, and the brightness of the grey frame that different blocks is inserted is the mean flow rate of adjacent two frame video images of this block.
Claims (3)
1. a 3D TV reduces the method that picture is crosstalked, and it is characterized in that: its step is following:
ⅰ, signal input module receive the 3D vision signal;
ⅱ, 3D processing module are carried out the parity rows separation to each frame of video, promptly separate two two field pictures of the corresponding 3D rendering of parity rows;
ⅲ, 3D processing module expand to two frame of video with each frame of video:
First frame of video is the strange capable image of the former frame of video of row reservation very, and the idol row is the grey row of output all; Second strange row of frame of video all exported the ash row, the idol row image of the former frame of video of idol row reservation;
ⅳ, 3D processing module are with the frame frequency lifting of display system more than one times;
Video frame images after ⅴ, the 3D processing module output expansion, the synchronous display mode of 3D rendering that former parity rows is corresponding is changed into asynchronous display mode, and the institute's images displayed frame of promptly very going realizes that with idol row images displayed frame timesharing shows.
2. a kind of 3D TV according to claim 1 reduces the method that picture is crosstalked, and it is characterized in that: described 3D vision signal comprises two picture video signals.
3. a kind of 3D TV according to claim 1 reduces the method that picture is crosstalked; It is characterized in that: among the described step ⅲ; When the 3D processing module expands to two frame of video with each frame of video; Ash row set-up mode comprises and is set to black row or for the ash of adjacent two frame video image mean flow rates is capable, or the viewing area is divided into different blocks, and the capable brightness of the ash that different blocks is inserted is the mean flow rate of adjacent two frame video images of this block.
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| CN102685540A (en) * | 2012-04-26 | 2012-09-19 | 青岛海信电器股份有限公司 | Method for optimizing three-dimensional (3D) display effect and 3D television |
| CN102724539A (en) * | 2012-06-11 | 2012-10-10 | 京东方科技集团股份有限公司 | 3D (three dimension) display method and display device |
| CN102790900A (en) * | 2012-07-19 | 2012-11-21 | 彩虹集团公司 | Simple and convenient method for converting 2D (2 dimension) into 3D (3 dimension) |
| CN103002308A (en) * | 2013-01-09 | 2013-03-27 | 青岛海信电器股份有限公司 | Three-dimensional display method and three-dimensional image imaging system |
| WO2014015546A1 (en) * | 2012-07-26 | 2014-01-30 | 深圳市华星光电技术有限公司 | Stereoscopic image display system |
| CN103888705A (en) * | 2012-12-12 | 2014-06-25 | 联美新视信息科技（上海）有限公司 | Image refreshing method of display screen in equipment and equipment with display screen |
| CN104581130A (en) * | 2012-08-15 | 2015-04-29 | 贵阳海信电子有限公司 | Method and device for optimizing 3D display effect of liquid crystal display screen and liquid crystal display television |
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| CN102685540A (en) * | 2012-04-26 | 2012-09-19 | 青岛海信电器股份有限公司 | Method for optimizing three-dimensional (3D) display effect and 3D television |
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Application publication date: 20120425 |