CN1246628A - Method for display field-division stereoscopic vision - Google Patents
Method for display field-division stereoscopic vision Download PDFInfo
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- CN1246628A CN1246628A CN 99114337 CN99114337A CN1246628A CN 1246628 A CN1246628 A CN 1246628A CN 99114337 CN99114337 CN 99114337 CN 99114337 A CN99114337 A CN 99114337A CN 1246628 A CN1246628 A CN 1246628A
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Abstract
A field-division stereoscopic display method includes left and right cameras, liquid crystal light valve, computer monitor and display card. The images from left and right cameras are alternatively displayed on a same device in time-share mode, and can be seen trough liquid crystal light valve. The image from left camera can be seen by the left glass while the right glass is closed, and vice versa. By composing in human brain, a stereoscopic image is formed.
Description
The present invention relates to a kind of branch display packing, particularly a kind of by computer-controlled method for display field-division stereoscopic vision.
The initial stage design proposal that field-division stereoscopic vision shows is: produce row, field sync signal to left and right video camera by internal system, make that two camera video signals are synchronous.As gating signal, two camera video signals interval alternate group is become stereoscopic signal with field sync signal.As gating signal, timesharing is alternately controlled left and right liquid crystal light valve and is taken turns opening and closing with the parity field signal, makes that left eye is opened when showing left video camera image, and right eye is closed, and when right video camera image appearred in display, the right side was opened a left side and closed.Because adopt parity field to be shown to right and left eyes respectively, therefore the resolution of image has reduced by one times.Pal mode video camera field frequency is 50Hz, and simple eye viewed picture frequency is 25Hz, subcritical flicker frequency 43Hz, and flicker has brought uncomfortable to the observer.Branch on the scene is three-dimensional to be shown, flicker and passage of scintillation light to the observer bring uncomfortable be a key issue, the reason of flicker is exactly that the monocular vision frequency ratio is lower.Thereby improve the monocular vision frequency so improve field frequency, make the monocular vision frequency near in addition to surpass critical flicker frequency be the basic method that solves flicker.
External most of time-sharing stereo Visual Display all is to solve flicker with the method that improves field frequency by every means.The Tectronix company of the U.S. brings up to 120Hz with field frequency in the stereoscopic vision method that they developed, the promptly simple eye frequency of image of watching reaches 60Hz.Why it can reach so high field frequency, is that its vision signal can reach 120Hz because they have used dedicated video camera.But the cost with dedicated video camera of high field frequency like this is expensive.The time-sharing stereo Visual Display of China show that field frequency is 50Hz, and the monocular vision frequency can only be 25Hz,, this mainly is subject to existing radio and television standard.
Fundamental purpose of the present invention provides a kind of raising display frequency, weakens flicker effects, the method for display field-division stereoscopic vision that stereoscopic sensation is strong.
Technology contents of the present invention is: on same display device, it is that liquid crystal light valve is watched that the people is with high speed glasses switch with left and right cameras image timesharing Alternation Display, and the left eye mirror is opened, the right eye mirror is closed, make left eye see left video camera image, otherwise, right video camera image shown.Brain by the people is synthetic, forms stereoscopic sensation.Principal character is videotaping synchronously and synthetic, the demonstration of stereoscopic signal and the driving of liquid crystal light valve of twin camera.
For improving display frequency, adopt special-purpose computer monitor display device, its field frequency can reach 90Hz, line frequency 56KHz, makes it to reach the effect of quick demonstration.In newly-designed stereoscopic display system displays, the relevant picture intelligence of pal mode video camera picked-up is selected at the scene for use, on monitor, show stereoscopic signal in the testing laboratory, improve field frequency this moment and just be evolved into the problem that solves flicker and how have the vision signal of parallax on computer monitor, to show two-way by the timesharing of monitor field frequency.
Introduce the conversion of multimedia video technique realization vision signal to rgb signal, through the frame storage, and the display mode of programming display card improves the demonstration field frequency, the influence of weakening flicker, enhancing stereoscopic result.Below in conjunction with accompanying drawing embodiment is elaborated.
Fig. 1 is a multimedia video technique schematic diagram of the present invention.Fig. 2 is a time-sharing stereo vision display system block diagram of the present invention.Fig. 3 is time-sharing stereo vision display system circuit theory diagrams of the present invention.Fig. 4 is a TN type liquid crystal transmittance curve map of the present invention.
Fig. 1 has represented the vision signal of generations such as video camera, video recorder is converted to the process of the rgb signal that can send the computing machine demonstration.In this process, at first need signal digitalizedly with VIDEO, be decoded into digitized YUV signal then, convert the digital rgb signal again to, it is stored among frame memory DRAM or the VRAM.This work is under the control of the scanning sequence of vision signal, reads digital signal RGB then under the control of VGA scanning sequence, again through D the A conversion deliver to CRT and show.Among the figure to VIDEO signal real-time sampling, depositing display frame in lower frequency deposits among the DRAM, display frame is deposited DRAM can regard as a buffer zone, and when computer monitor was operated in high resolving power, high field frequency mode, the frequency that reads digital rgb from DRAM was higher relatively.Therefore can pass through the DRAM buffer action, realize the principle of " deposit soon slowly and put ", show field frequency thereby improve.
Fig. 2 is a time-sharing stereo vision display system block diagram of the present invention.The core that time-sharing stereo shows utilizes multimedia video technique that the VIDEO conversion of signals is become rgb signal exactly, with the synthetic stereoscopic signal of two-way rgb signal, send computer monitor to show again.Utilize the ET4000 display card, improve the demonstration field frequency and weaken flicker, strengthen stereoscopic result.The course of work of system: (1). right video camera is from video camera, gives right video camera with the signal of left video camera as external synchronization signal, and is synchronous with the work that realizes two video cameras.(2). two-way A/D, colour decoding chip are with VIDEO signal V
L, V
RConvert (RGB) to
L(RGB)
R. (3). threshold signal HGT, the VGT etc. that utilize video chip to decompose out produce one group of control signal, control the storage of two-way RGB data in DRAM and read.(4). the YUV signal that is obtained by colour decoding chip SAA7196 is transferred on the pci bus of computing machine by special purpose interface chip ZR36120, and leave that the computing machine display frame is deposited in or internal memory in do directly to show or handle and use, also can dump to hard disk and preserve the result that video obtains, handle usefulness so that image is done other by programming.(5). 16 * 2 the data that will read from DRAM become the IMA mouth that 8 bit data are sent ET4000, realize (RGB) by ET4000 being sticked into the row programming
L(RGB)
RAlternation Display at computer monitor.(6). with the field sync signal is original signal, obtains a square-wave signal through d type flip flop, the front-end control signal of control left and right sides light valve drive circuit, when guaranteeing that left camera review appears in monitor, the left eye light valve is opened, and the right eye light valve is closed; When right video camera image appearred in monitor, the right eye light valve was opened, and the left eye light valve is closed.
Fig. 3 is time-sharing stereo vision display system circuit theory diagrams of the present invention.By the control of control circuit, pci interface chip ZR36120 is accomplished to the obtaining and obtain every frame every the field video of the obtaining of single camera video, twin camera of calculator memory.
SAA7196 and ZR36120 all are programmable chips, by pci bus and I
2The C bus can be programmed to chip, all can realize by programming for the change of image brightness, colourity, contrast etc.By programming above-mentioned factor is regulated, can remedy, be beneficial to enhancing stereoscopic sensation and telepresenc because the not quite identical error that causes of video camera light path makes left and right sides picture intelligence approaching consistent on these indexs.I
2The C bus is a kind of universal serial bus, and its feature is as follows: only need two buses, one is serial data (SDA), another root is clock (SCL), with just can carry out information transmission between the equipment that bus is connected, each equipment all has the address of oneself, can be used as main equipment or slave unit.I
2The C bus is a multi-master bus, that is to say that not only an equipment can control bus.The buffer memory of video data and control thereof: send whole pictorial data of twin camera picked-up display frame to deposit at a high speed by display card ET4000IMA mouth 8 position datawires, must add the video data buffer memory simultaneously, system uses DRAM to finish.The control of DRAM: because the rank addresses time-sharing multiplex of DRAM, and its data line is two-way, adds that it writes, reads control signal and has constituted comparatively complicated, a loaded down with trivial details logical relation.If form the control circuit part with a series of registers, logic gate, must strengthen the plate face of printed panel, and the signal lag increasing, make control signal inaccurate.This invention has used a slice programmable logic chip isPLS11032 to finish dram controller and other whole steering logics.DRAM is connected with the ET4000IMA mouth: the IMA mouth of ET4000 is 8 asynchronous input ports, can receive CPU or pictorial data and directly enter ET4000 display card display memory, and be to transmit into display memory in the linear address mode, the input scan sequence can be staggered or noninterlace mode.In case after entering display memory, pictorial data just can be controlled demonstration by display controller or auxiliary display controller.Because the data bandwidth of IMA is 40MB, promptly the transfer rate of IMA mouth must not be higher than 40MB, and the read-out speed that the present invention designs DRAM is not more than 40MB.
Fig. 4 is a TN type liquid crystal transmittance curve map of the present invention.Liquid crystal light valve has utilized TN (twisted nematic) the electrooptical effect principle of liquid crystal as the auxiliary facilities for observation of stereoscopic vision, and the electrooptical effect principle of liquid crystal has determined the electric drive characteristic of liquid crystal light valve.The curve of liquid crystal transmittance that shown in Figure 10 is under the TN type effect and electric field intensity, by curve as can be known.As long as apply the electric field that is higher than threshold value accordingly and cancel electric field, just can realize closing and opening of liquid crystal light valve.The basic square wave that the square wave that field sync signal produces through the register two divided-frequency produces circuit is exported and is oppositely exported and carry out alternative, finally generates the switching signal of right and left eyes light valve.
The invention has the beneficial effects as follows: this method for display field-division stereoscopic vision is taken the photograph about can making The Synchronous camera of camera synthesizes stereoscopic signal, forms stereo image. Introduce the multimedia video skill Art realizes vision signal to the conversion of rgb signal, carries by the display mode of programming display card The high field frequency that shows weakens flicker, strengthens stereoscopic result. The weight of virtual current computer system Will partly be generation and the demonstration of binocular stereo vision, the generation of time-sharing type stereoscopic vision be with aobvious Show that method has realized the approach sense of vision of virtual now. High-end can be used in military affairs, the space flight, Low side can be used in the amusement, can also be used in design, manufacturing industry and market development, doctor in addition The operation for the treatment of and health care, deathtrap, training, education, information visualization etc. On.
Claims (5)
1. three-dimensional display packing is divided in a field, comprise left and right cameras, liquid crystal light valve glasses, computer monitor and display card, described left and right cameras image timesharing Alternation Display is on same display device, when the people is with the liquid crystal light valve glasses to watch, the left eye mirror is opened, the right eye mirror is closed, make left eye see left video camera image, otherwise, make right eye see right video camera image, synthetic by people's brain, form stereoscopic image, it is characterized in that the synchronous shooting of twin camera, synthetic, the demonstration of stereoscopic signal, the driving of liquid crystal light valve and introducing multimedia video technique;
A). by the control of control circuit, pci interface chip ZR36120 is accomplished to the obtaining and obtain every frame every the field video of the obtaining of single camera video, twin camera of calculator memory.Pci bus and I
2The C bus can be programmed to chip, all can realize by programming for the change of image brightness, colourity, contrast etc.
B). adopt special-purpose computer monitor display device, the relevant picture intelligence of pal mode video camera picked-up is selected at the scene for use, shows stereoscopic signal on monitor;
C). introduce multimedia video technique and realize the conversion of vision signal to rgb signal, deposit display frame then in and deposit DRAM, the display mode of programming display card improves the demonstration field frequency, thereby weakens the influence of flicker, strengthens stereoscopic result.
2. divide three-dimensional display packing according to the field of claim 1, it is characterized in that described I
2The C bus is a kind of universal serial bus, and its only needs two buses, and one is serial data SDA, and another root is clock SCL, and just can carry out information transmission between the equipment that bus is connected, and each equipment all has the address of oneself, can be used as main equipment or slave unit.I
2The C bus is a multi-master bus, that is to say that not only an equipment can control bus.
3. divide three-dimensional display packing according to the field of claim 1, after it is characterized in that the picture intelligence digitizing of described twin camera picked-up, alternately deliver to the display frame of computer display card deposits through pci interface chip ZR36120, can utilize plurality of display modes that computing machine possesses to improve and show field frequency, weaken flicker.
4. divide three-dimensional display packing according to the field of claim 1, it is characterized in that described DRAM is a buffer zone, frequently directly send display frame to deposit with high clock the complete pictorial data that deposits twin camera in through display card ET4000IMA mouth, show twin camera image alternately through programming appropriate display pattern again, in the control of DRAM, dram controller has used the programmable logic chip isPLSI1032 of a slice to finish design.
5. according to divide three-dimensional display packing, the driving that it is characterized in that described liquid crystal light valve be closing of liquid crystal light valve in the field of claim 1 and open and be to apply accordingly the electric field that is higher than threshold values and cancel electric field.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 99114337 CN1246628A (en) | 1999-07-16 | 1999-07-16 | Method for display field-division stereoscopic vision |
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| CN 99114337 CN1246628A (en) | 1999-07-16 | 1999-07-16 | Method for display field-division stereoscopic vision |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458559C (en) * | 2003-06-23 | 2009-02-04 | 宋柏君 | Stereoscopic digital camera and imaging display method |
| CN101742347A (en) * | 2010-01-04 | 2010-06-16 | 中国电信股份有限公司 | Method for realizing three-dimensional display, display device and display system |
| CN101867839A (en) * | 2010-05-31 | 2010-10-20 | 深圳创维－Rgb电子有限公司 | Program signal output method, system, television and glasses |
| CN101212699B (en) * | 2006-12-26 | 2011-03-23 | 三星电子株式会社 | Three-dimensional image display apparatus and method and system for processing three-dimensional image signal |
| CN101047872B (en) * | 2006-03-28 | 2011-07-13 | 深圳Tcl新技术有限公司 | Stereo audio vedio device for TV |
| CN102201208A (en) * | 2010-03-25 | 2011-09-28 | 宏碁股份有限公司 | Liquid crystal display and control method thereof |
| CN102901703A (en) * | 2012-10-10 | 2013-01-30 | 彩虹集团公司 | Three-dimensional (3D) image displaying method for security inspection equipment |
| CN101689354B (en) * | 2007-06-27 | 2013-11-06 | 汤姆逊许可证公司 | Method for display of 3d image |
| CN105263013A (en) * | 2015-09-16 | 2016-01-20 | 云南师范大学 | Method for realizing binocular stereo video synchronization through vertical synchronizing signals |
-
1999
- 1999-07-16 CN CN 99114337 patent/CN1246628A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458559C (en) * | 2003-06-23 | 2009-02-04 | 宋柏君 | Stereoscopic digital camera and imaging display method |
| CN101047872B (en) * | 2006-03-28 | 2011-07-13 | 深圳Tcl新技术有限公司 | Stereo audio vedio device for TV |
| CN101212699B (en) * | 2006-12-26 | 2011-03-23 | 三星电子株式会社 | Three-dimensional image display apparatus and method and system for processing three-dimensional image signal |
| CN101689354B (en) * | 2007-06-27 | 2013-11-06 | 汤姆逊许可证公司 | Method for display of 3d image |
| CN101742347A (en) * | 2010-01-04 | 2010-06-16 | 中国电信股份有限公司 | Method for realizing three-dimensional display, display device and display system |
| CN101742347B (en) * | 2010-01-04 | 2013-01-23 | 中国电信股份有限公司 | Method for realizing three-dimensional display, display device and display system |
| CN102201208A (en) * | 2010-03-25 | 2011-09-28 | 宏碁股份有限公司 | Liquid crystal display and control method thereof |
| CN102201208B (en) * | 2010-03-25 | 2013-03-20 | 宏碁股份有限公司 | Liquid crystal display and control method thereof |
| CN101867839A (en) * | 2010-05-31 | 2010-10-20 | 深圳创维－Rgb电子有限公司 | Program signal output method, system, television and glasses |
| CN102901703A (en) * | 2012-10-10 | 2013-01-30 | 彩虹集团公司 | Three-dimensional (3D) image displaying method for security inspection equipment |
| CN105263013A (en) * | 2015-09-16 | 2016-01-20 | 云南师范大学 | Method for realizing binocular stereo video synchronization through vertical synchronizing signals |
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