CN102158723B - Three-dimensional double-projector automatic synchronization method and automatic synchronization three-dimensional playing system - Google Patents
Three-dimensional double-projector automatic synchronization method and automatic synchronization three-dimensional playing system Download PDFInfo
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Abstract
The invention discloses a three-dimensional double-projector automatic synchronization method and an automatic synchronization three-dimensional playing system. The method comprises the following steps: (1) setting identification data in front of a first frame of a positive film, wherein the identification data comprises at least one group of fundamental sequences, and each fundamental sequence comprises at least two images with different pixel values and the same visual effect; (2) image data is received, and the identification data is received; and (3) a phase position is checked automatically according to detected identification data. According to the invention, the playing operation of a three-dimensional film can be simplified and facilitated.
Description
Technical field
The present invention relates to the three-dimensional image display technology field, particularly a kind of 3D film dual-projection appearance is play autosynchronous method.
Background technology
Three-dimensional (3D) image display technology is widely used in a plurality of fields (comprising film, broadcasting, medical services, education, military affairs, recreation, animation etc.).And be the important technology of developing film three-dimensional display of future generation at present.
Because the mankind have binocular vision, so the degree of depth and distance in can the perception three-dimensional world.Human eyes are with about 2.5 inches horizontal separation, and every eyes come the perception world from slight different visual angle.As a result, the image of projection also has slight difference on the retina of eyes, and this species diversity is called binocular parallax.As human visual system's a part, brain has the ability that binocular parallax is interpreted as the degree of depth through the processing that is called stereopsis.The human visual system is called stereoscopic vision from the ability of binocular parallax perceived depth.
Three-dimensional image display technology is exactly to utilize the stereoeffect of the difference formation image between left-eye image and the eye image.At present, three-dimensional image display device is divided into glasses type and non-glasses type, and the glasses type mainly is divided into passive 3 D stereo glasses and two big types of active 3 D stereo glasses.
Initiatively the 3 D stereo glasses are commonly referred to as shutter glasses, and it is the glasses that can switch at a high speed about utilizing LCD panel energising outage can transparent or dark principle to make.This technology is apparatus expensive not only, and glasses are safeguarded inconvenient, also needs energising during use, and signal is interfered easily, and watches for a long time and can cause eye tired.
Passive 3 D stereo glasses are divided into colour filter type and Polarization filter type again.The colour filter type is to utilize the principle of coloured paper filter light, and each limit filters out remaining this picture that should see to red or blue colour cast.What adopt is that green mode is come separately picture.The film color decreases look serious, the eyes easy fatigue.
The Polarization filter glasses become left-eye image and eye image through using the shadow effect that is caused by polarization element with image division, and two projectors have the Polarization filter of oneself respectively, throw left-eye image and eye image respectively; Be the shake different picture of light belt of the left polarised light seen respectively of spectators' right and left eyes and right avertence, the vision system through the people produces third dimension.Use this glasses to be not easy eyes are caused fatigue, and the price material benefit.But when the right and left eyes image is transmitted in two projectors, the phase place that receives and send two ends may be asynchronous, and promptly left-eye image is sent to the right eye projecting apparatus, and when eye image was sent to the left eye projecting apparatus, binocular stereo vision just was affected.Conventional processing method is manually to go to adjust phase place.Usually, the broadcast of 3D film all needs the projectionist to go to accomplish such operation, thereby to showing and watching all and making troubles.
Summary of the invention
The purpose of this invention is to provide a kind of 3D film dual-projection appearance and play autosynchronous method, can not autosynchronous problem to solve polarization class filtering glasses.
Another object of the present invention provides a kind of autosynchronous 3D Play System, can not autosynchronous problem to solve polarization class filtering glasses.
The present invention proposes a kind of 3D dual-projection appearance automatic synchronous method; May further comprise the steps: (1) is provided with identification data before first frame of positive; Said identification data comprises at least one group of basic sequence, and said basic sequence is by at least two pixel value differences, image construction that visual effect is identical.(2) receive view data, and detect said identification data.(3) according to the automatic verification phase place of detected identification data.
Further, the image in the said basic sequence is the monochrome image near ater.
Further, said identification data comprises 6 groups of basic sequences.
Further, to be provided with said first frame of the positive of identification data be left frame in the front.
Further, receive view data, and comprise step when detecting said identification data: through the image in the MPEG-2 code decode algorithm reduction identification data.
The present invention proposes a kind of autosynchronous 3D Play System in addition, comprises movie server, synchronizing sequence frame identification module, left eye projecting apparatus and right eye projecting apparatus.The movie server is used to produce identification data, and before identification data was arranged on first frame of positive, said identification data comprised at least one group of basic sequence, and said basic sequence is by at least two pixel value differences, image construction that visual effect is identical.Synchronizing sequence frame identification module links to each other with the movie server, and be used to receive the view data that the movie Server Transport is come, and detect the identification data in the said view data, and according to the local phase place of said identification data verification.The left eye projecting apparatus links to each other with synchronizing sequence frame identification module, is used to receive and play the left-eye image that the transmission of synchronizing sequence frame identification module comes.The right eye projecting apparatus links to each other with synchronizing sequence frame identification module, is used to receive and play the eye image that this synchronizing sequence frame identification module transmission comes.
Further, the image in the said basic sequence is the monochrome image near ater.
Further, said identification data comprises 6 groups of basic sequences.
Further, to be provided with said first frame of the positive of identification data be left frame in the front.
With respect to prior art, the invention has the beneficial effects as follows:
1, the present invention is through being arranged on identification data before the positive; Confirmed the image phase in the follow-up positive; Thereby can calibrate the playing sequence of spectators' right and left eyes image automatically, realize simplifying and made things convenient for the play operation of 3D film greatly under the low prerequisite of cost.
2, identification data of the present invention can adopt near the monochrome image of the ater part as basic sequence; Thereby make the visual effect of identification data in playing process before the positive the same with black scenes; Can do not discovered, thereby can not influence the broadcast of positive by spectators.
3, identification data of the present invention is combined by basic sequence; And basic sequence is again that the image by different pixels, identical visual effect constitutes with certain arrangement sequence; Therefore can distinguish with other view data effectively, can effectively avoid erroneous detection.
Description of drawings
Fig. 1 is a kind of embodiment flow chart of 3D dual-projection appearance automatic synchronous method of the present invention;
Fig. 2 is a kind of example structure figure of the autosynchronous 3D Play System of the present invention.
Embodiment
The generation of binocular stereo vision requires right and left eyes to receive the image that two width of cloth comprise different information simultaneously, and promptly two images receiving of right and left eyes have comprised the different information of Same Scene, among the present invention these two images are called left-eye image and eye image.
During transmission right and left eyes image, the packing that interweaves of two types of images, serial ground transmits usually.The order of transmission can be with left frame (being first image of left eye) (the L R L R that as first frame, interweaves successively then ...).Otherwise perhaps, with right frame (being first image of right eye) (the R L R L that as first frame, interweaves successively ...).Usually call the positive phase transmission to the former, the latter is called the minus phase transmission.
Receiving equipment after receiving the image sequence that interweaves successively, according to the phase place of this locality image respectively successively deliver to left eye projecting apparatus and right eye projecting apparatus.In order to make receiving equipment can confirm when first frame of positive arrives, and the present invention adds identification data before first frame of positive, thereby make receiving equipment calibration phase automatically, simplify and made things convenient for the play operation of 3D film.
Below in conjunction with accompanying drawing, specify the present invention.See also Fig. 1, it is for a kind of embodiment flow chart of 3D dual-projection appearance automatic synchronous method of the present invention, and it may further comprise the steps:
S101 is provided with identification data before first frame of positive, said identification data comprises at least one group of basic sequence, and said basic sequence is by at least two pixel value differences, image construction that visual effect is identical.
The present invention preferably adopts near the monochrome image of the ater part as basic sequence, because it is the same with black scenes, thereby can not discovered by spectators when playing, and also is easy to for follow-up detection processing.
S102 receives view data, and detects said identification data.The image algorithm that in film industry, is suitable at present is MPEG-2, so the transmission of identification data will meet the MPEG-2 code decode algorithm.
S103 is according to the automatic verification phase place of detected identification data.Owing to be first frame of positive after the identification data, therefore can confirm just after detecting identification data when positive arrives, thus calibration phase automatically just.Preferred first frame of the present invention is left frame (left-eye image), and promptly detecting behind the identification data just can be with first frame definition of follow-up positive for sending to the image of left eye projecting apparatus.
For example, can use the elementary cell of two black images as image sequence, be designated as image A and image B, the pixel value of image A and image B is different, but visual effect all is a black.And, be designated as S-ab with the basic sequence that A B A B B A six sub-pictures constitute, wherein putting in order of A and B can be made up arbitrarily.Form the identification data of 30 frames with five groups of continuous basic sequence S-ab S-ab S-ab S-ab S-ab then, and to be arranged on left frame be before the positive of first frame, the quantity of basic sequence also can be adjusted certainly.
Then identification data and the positive back of packing together is transferred to receiving equipment as film data.Receiving equipment can detect the film data that receives; When receiving equipment detects any basic sequence S-ab that includes in the film data in the identification data; Just can confirm that first frame after this identification data is left frame, thereby realize the calibration of phase place.
See also Fig. 2, it is a kind of example structure figure of the autosynchronous 3D Play System of the present invention, and it comprises movie server 21, synchronizing sequence frame identification module 22, left eye projecting apparatus 23 and right eye projecting apparatus 24.Synchronizing sequence frame identification module 22 links to each other with movie server 21, and left eye projecting apparatus 23 all links to each other with synchronizing sequence frame identification module 22 with right eye projecting apparatus 24.
An effect of movie server 21 is to produce identification data, and this identification data is that stored in form with multimedia file is on its disk.Identification data comprises at least one group of basic sequence, and each basic sequence is by at least two pixel value differences, image construction that visual effect is identical.Wherein, the pixel of image, visual effect and put in order and can set in the basic sequence according to being accustomed to maybe needs, basic sequence of the present invention preferably adopts the part near the monochrome image conduct of ater.Image in the basic sequence can be used generations such as image editing tools such as the PHOTOSHOP of some main flows.
When needs are play the 3D film, before movie server 21 will extract identification data and be arranged on first frame of positive.First frame that it should be noted that positive described here can be set at left frame, also can be set at right frame, has confirmed just when identification data is set that promptly first frame of follow-up positive has been left-eye image or eye image.According to existing movie convention, the present invention preferably with left frame as first frame, the transmission means that is to say film data is similar " L R L R ... " The positive phase transmission means.
After identification data added completion, movie server 21 was just packed it with positive, be transferred to synchronizing sequence frame identification module 22 as film data.Because the image algorithm that film industry is used is MPEG-2, will meet the MPEG-2 code decode algorithm so be transferred to the identification data of synchronizing sequence frame identification module 22.
After synchronizing sequence frame identification module 22 receives the film data that movie server 21 sends; It is decoded and detects; When in detecting film data, including any one group of basic sequence of identification data; Just can confirm the phase place of follow-up positive according to the position at this basic sequence place, and local phase place is calibrated.Promptly when synchronizing sequence frame identification module 22 detects in the identification data any basic sequence; Image phase in its follow-up positive, the image order that corresponds to spectators' right and left eyes just is synchronized and has locked in other words, if positive first frame definition is left frame; Then synchronizing sequence frame identification module 22 can be transferred to left eye projecting apparatus 23 with first frame of positive; Second frame of positive is transferred to right eye projecting apparatus 24, and the transmission that so interweaves is play thereby accomplish.
The present invention has confirmed the image phase in the follow-up positive, thereby can calibrate the playing sequence of spectators' right and left eyes image automatically through identification data being arranged on before the positive, simplified and made things convenient for the play operation of 3D film.
More than disclosedly be merely several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, only otherwise exceed the said scope of appended claims, all should drop in protection scope of the present invention.
Claims (9)
1. a 3D dual-projection appearance automatic synchronous method is characterized in that, may further comprise the steps:
Before first frame of positive, identification data is set; Said identification data comprises at least one group of basic sequence; Said basic sequence is by at least two pixel value differences, image construction that visual effect is identical; The different images order of basic sequence, first two field picture of having represented positive is left two field picture or right two field picture;
Receive view data, and the putting in order of the said different images in the detected image basic sequence;
According to putting in order of the said different images in the detected image basic sequence, first two field picture of discerning positive is left two field picture or right two field picture.
2. 3D dual-projection appearance automatic synchronous method as claimed in claim 1 is characterized in that the image in the said basic sequence is the monochrome image near ater.
3. according to claim 1 or claim 2 3D dual-projection appearance automatic synchronous method is characterized in that said identification data comprises 6 groups of basic sequences.
4. 3D dual-projection appearance automatic synchronous method as claimed in claim 1 is characterized in that said first frame that the front is provided with the positive of identification data is left frame.
5. 3D dual-projection appearance automatic synchronous method as claimed in claim 1 is characterized in that, receives view data, and comprises step when detecting said identification data: through the image in the MPEG-2 code decode algorithm reduction identification data.
6. an autosynchronous 3D Play System is characterized in that, comprising:
One movie server; Be used to produce an identification data; And before this identification data was arranged on first frame of positive, said identification data comprised at least one group of basic sequence, and said basic sequence is by at least two pixel value differences, image construction that visual effect is identical; The different images order of basic sequence, first two field picture of having represented positive is left two field picture or right two field picture;
One synchronizing sequence frame identification module links to each other with this movie server, is used to receive the view data that this movie Server Transport is come, and detects putting in order of different images described in the image basic sequence in the said view data;
And according to the putting in order of the said different images in the said image basic sequence, first two field picture of verification positive is left two field picture or right two field picture;
One left eye projecting apparatus links to each other with this synchronizing sequence frame identification module, is used to receive and play the left-eye image that this synchronizing sequence frame identification module transmission comes;
One right eye projecting apparatus links to each other with this synchronizing sequence frame identification module, is used to receive and play the eye image that this synchronizing sequence frame identification module transmission comes.
7. autosynchronous 3D Play System as claimed in claim 6 is characterized in that the image in the said basic sequence is the monochrome image near ater.
8. like claim 6 or 7 described autosynchronous 3D Play Systems, it is characterized in that said identification data comprises 6 groups of basic sequences.
9. autosynchronous 3D Play System as claimed in claim 6 is characterized in that, said first frame that the front is provided with the positive of identification data is left frame.
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| US9031316B2 (en) | 2012-04-05 | 2015-05-12 | Mediatek Singapore Pte. Ltd. | Method for identifying view order of image frames of stereo image pair according to image characteristics and related machine readable medium thereof |
| CN105763867A (en) * | 2016-04-20 | 2016-07-13 | 青岛海信电器股份有限公司 | Processing method and apparatus of 3D display signal, and 3D player |
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| US8157381B2 (en) * | 2005-12-21 | 2012-04-17 | International Business Machines Corporation | Method to synchronize stereographic hardware to sequential color rendering apparatus |
| US8134591B2 (en) * | 2008-05-07 | 2012-03-13 | Eastman Kodak Company | Display using bidirectionally scanned linear modulator |
| US8411137B2 (en) * | 2008-07-16 | 2013-04-02 | Dolby Laboratories Licensing Corporation | Dual projection system with inversely synchronized channel projections |
| FR2939265A1 (en) * | 2008-12-03 | 2010-06-04 | Thomson Licensing | METHOD FOR DETECTING FILM MODE OR CAMERA MODE |
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