CN101782685A - System for realizing real-time multi-angle three-dimensional sight - Google Patents

System for realizing real-time multi-angle three-dimensional sight Download PDF

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Publication number
CN101782685A
CN101782685A CN200910195135A CN200910195135A CN101782685A CN 101782685 A CN101782685 A CN 101782685A CN 200910195135 A CN200910195135 A CN 200910195135A CN 200910195135 A CN200910195135 A CN 200910195135A CN 101782685 A CN101782685 A CN 101782685A
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ultrasonic
position information
angle
shutter glasses
computing machine
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CN200910195135A
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王俊
曹虎林
徐盛
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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Abstract

The invention provides a system for realizing real-time multi-angle three-dimensional sight, which comprises an ultrasonic ranging array, a position information processing device, a computer and shutter glass, wherein the ultrasonic ranging array is connected with the position information processing device to transmit information about motion distances of ultrasonic waves; the position information processing device is connected with the computer to transmit the position information of left and right eyes; the computer is connected with the shutter glass to transmit synchronization control information; and the ultrasonic ranging array is connected with the computer and the shutter glass respectively to transmit the ultrasonic information. Images of the left and right eyes can be obtained by calculating the real-time position information of the left and right eyes and are alternatively displayed by a display, the shutter glass is controlled to synchronously shield the liquid crystal glass of the left and right eyes and finally the real-time multi-angle three-dimensional sight is provided for a shutter glass user, namely, when the position and a visual angle of the shutter glass user are changed, the visual effect of a three-dimensional image is not influenced.

Description

System for realizing real-time multi-angle three-dimensional sight
Technical field
What the present invention relates to is the system in a kind of liquid crystal technology field, specifically is a kind of system for realizing real-time multi-angle three-dimensional sight.
Background technology
Human can see three-dimensional scenery, be that this has caused the image of scenery that some differences are arranged in images of left and right eyes because between our images of left and right eyes certain distance is arranged, and human brain can be with the image co-registration of eyes, thereby produces stereoscopic visual effect.Because the display of computing machine is the plane, during direct viewing, can not form stereoscopic vision in brain.At present, comparatively general implementation is to watch by shutter glasses (ShutterGlass).Shutter glasses has two liquid crystal lens, and it is opaque or transparent to control liquid crystal lens, i.e. synchronization, and an eyeglass is opaque, and another eyeglass is transparent.Eyes behind the opaque eyeglass be can't see image, have only the eyes behind the transparent glasses lens can see image.When the quick Alternation Display of the image of images of left and right eyes on display, cooperate shutter glasses synchronously, promptly when left-eye image is presented on the display, make left eyeglass lens transparent, allow left eye see image, make that simultaneously the right eye eyeglass is opaque, cover eye image; When eye image is presented on the display, make that the right eye eyeglass is transparent, allow right eye see image, make left eyeglass lens opaque simultaneously, cover left-eye image.Because human eye has the physiological characteristic of persistence of vision, when the right and left eyes image is alternately enough fast, just can form stereoscopic vision.
Through existing correlation technique literature search is found, Chen Fang is a shutter glasses at the time division type liquid crystal glasses described in " principle of work of time division type crystal glasses and use main points " literary composition, this system is switched by the state of three-dimensional driver emission infrared ray control liquid crystal glasses left and right sides eyeglass and the picture synchronization of display, make left eye only see the image that left eye should be seen, right eye is only seen the image that right eye should be seen.Under synchronizing signal was continuously controlled, real situation when shutter glasses can imitate human eye picture with the aid of pictures was added the persistence of vision physiological characteristic of human eye, just can see stereopsis true to nature.But in this system, the shutter glasses user just can obtain stereo-picture when having only from the dead ahead observation display, and promptly the angle of Guan Chaing must relative fixed.If shutter glasses user's position and visual angle change, original image can produce distortion, and this has greatly influenced the effect that shutter glasses uses.
Summary of the invention
The present invention is directed to the shortcoming that exists in the prior art, propose a kind of system for realizing real-time multi-angle three-dimensional sight, make the shutter glasses user in the scope that can see display, carry out position and visual angle when moving, can both Real Time Observation to distortionless stereo-picture.
The present invention is achieved by the following technical solutions:
The present invention includes: computing machine, position information process device, ultrasonic ranging array and shutter glasses, wherein: the ultrasonic ranging array links to each other with the position information process device and transmits hyperacoustic move distance information, the position information process device links to each other with computing machine and transmits the positional information of images of left and right eyes, the computing machine transmitting synchronous control information that links to each other with shutter glasses, ultrasonic ranging array respectively with the computing machine transmission ultrasound information that links to each other with shutter glasses.
Described ultrasonic ranging array comprises: two ultrasonic transmitters and three ultrasonic receivers, wherein: two ultrasonic transmitters are separately positioned on the left and right sides emission ultrasound wave of shutter glasses, three ultrasonic receivers are separately positioned on any three drift angle places reception ultrasound wave of graphoscope, and the position information process device links to each other each ultrasonic transmitter of transmission to the range information between each ultrasonic receiver with ultrasonic receiver.
The ultrasonic ranging array is responsible for providing in real time two range informations between ultrasonic transmitter to three ultrasonic receiver, the position information process device calculates a left side by handling from the ultrasonic transmitter of ultrasonic ranging array and the range information between ultrasonic receiver, the positional information of right eye, the left side that computing machine provides by the receiving position information treating apparatus, the positional information of right eye is drawn a left side, the image of right eye is also exported demonstration by graphoscope, computing machine is controlled shutter glasses simultaneously and is covered the right side synchronously, the left eye liquid crystal lens, when being graphoscope demonstration left-eye image, have only left eye to see; When showing eye image, have only right eye to see.Utilize the persistence of vision feature of human eye like this, when the right and left eyes image is alternately enough fast, just formed stereoscopic vision.When shutter glasses user's position and visual angle change, corresponding images of left and right eyes positional information also can change, change thereby left-and right-eye images is also corresponding,, can both Real Time Observation arrive distortionless stereo-picture therefore as long as in the user can see the scope of display.
Compared with prior art, the invention has the beneficial effects as follows: by calculating the real-time position information of images of left and right eyes, obtain the image of images of left and right eyes, utilize the image of graphoscope Alternation Display images of left and right eyes again, and the control shutter glasses synchronously covers the right side, left eye liquid crystal lens, the stereoscopic vision of real-time multi-angle finally is provided to the shutter glasses user, when promptly shutter glasses user's position and visual angle change, has not influenced the visual effect of stereo-picture.
Description of drawings
Fig. 1 is the system chart of embodiment;
Fig. 2 is the connection diagram of ultrasonic ranging array among the embodiment;
Fig. 3 is the coordinate system that the position signal conditioning package is set among the embodiment;
Fig. 4 is the observed image of shutter glasses left eye among the embodiment;
Fig. 5 is the observed image of shutter glasses right eye among the embodiment.
Embodiment
Below in conjunction with accompanying drawing system of the present invention is further described, the present invention is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: computing machine 1, position information process device 2, ultrasonic ranging array 3 and shutter glasses 4, wherein: ultrasonic ranging array 3 links to each other with position information process device 2 and transmits hyperacoustic move distance information, position information process device 2 links to each other with computing machine 1 and transmits the positional information of images of left and right eyes, the computing machine 1 transmitting synchronous control information that links to each other with shutter glasses 4, ultrasonic ranging array 3 respectively with the computing machine 1 transmission ultrasound wave that links to each other with shutter glasses 4.
Described computing machine 1 comprises: main frame 5 and display 6, wherein: position information process device 2 links to each other with main frame 5 and transmits the positional information of images of left and right eyes, the transmitting synchronous control information that links to each other with shutter glasses 4 of the main frame 5 transmission left-and right-eye images information that links to each other with display 6, main frame 5.
Described ultrasonic ranging array 3 comprises: two ultrasonic transmitters 7 and three ultrasonic receivers 8, wherein: two ultrasonic transmitters 7 are separately positioned on the left and right sides of shutter glasses 4, three ultrasonic receivers 8 are separately positioned on the upper left corner of display 6, the upper right corner and the lower left corner, position information process device 2 links to each other each ultrasonic transmitter 7 of transmission to the range information between each ultrasonic receiver 8 with ultrasonic receiver 8, each ultrasonic transmitter 7 can be in real time to three ultrasonic receivers, 8 emission ultrasound waves, and each ultrasonic receiver 8 can receive the ultrasound wave of launching from two ultrasonic transmitters 7.
As shown in Figure 2, the connection of ultrasonic ranging array 3 signal in the present embodiment, order: the first ultrasonic transmitter T1 is positioned at the glasses left side, the second ultrasonic transmitter T2 is positioned at glasses the right, the first ultrasonic receiver R1 is positioned at the display upper left corner, the second ultrasonic receiver R2 is positioned at the display upper right corner, the 3rd ultrasonic receiver R3 is positioned at the display lower left corner, be transmitted into ultrasonic receiver Rj institute elapsed time by measuring ultrasound wave from ultrasonic transmitter Ti, can draw ultrasonic transmitter Ti between the ultrasonic receiver Rj apart from d TiRj, computing formula is as follows:
d TiRj＝V×t TiRj (1)
Wherein: i gets 1 and 2, and j gets 1,2 and 3, the speed that on behalf of ultrasound wave, V propagate in air, t TiRjRepresent ultrasound wave from ultrasonic transmitter Ti to the time that ultrasonic receiver Rj is experienced, calculate the range information d of six different meanings in the present embodiment T1R1, d T1R2, d T1R3, d T2R1, d T2R2And d T2R3
As shown in Figure 3, in order to obtain the positional information of images of left and right eyes, line with ultrasonic receiver R1 and R2 is the x axle, and the line of ultrasonic receiver R1 and R3 is the y axle, and the direction of R1 vertical display 6 is the z axle, R1 is a true origin, R1 is an x axle positive dirction to the direction of R2, and R1 is a y axle positive dirction to the direction of R3, and the outside direction of R1 vertical display is that z axle pros always set up rectangular coordinate system, wherein the distance of R1 and R2 is W, and the distance of R1 and R3 is H.Six range information d that provide according to ultrasonic ranging array 3 TiRj, can obtain the coordinate (x of ultrasonic transmitter T1 1, y 1, z 1) and the coordinate (x of ultrasonic transmitter T2 2, y 2, z 2), computing formula is as follows:
x 1 = d T 1 R 1 2 - d T 1 R 2 2 + W 2 2 W y 1 = d T 1 R 1 2 - d T 1 R 3 2 + H 2 2 H z 1 = d T 1 R 1 2 - x 1 2 - y 1 2 x 2 = d T 2 R 1 2 - d T 2 R 2 2 + W 2 2 W y 2 = d T 2 R 1 2 - d T 2 R 3 2 + H 2 2 H z 2 = d T 2 R 1 2 - x 2 2 - y 2 2 - - ( 2 )
And then can calculate the original coordinates (x of left eye 3, y 3, z 3) and the original coordinates (x of right eye 4, y 4, z 4), computing formula is as follows:
x 3 = 3 4 x 1 + 1 4 x 2 y 3 = 3 4 y 1 + 1 4 y 2 z 3 = 3 4 z 1 + 1 4 z 2 x 4 = 1 4 x 1 + 3 4 x 2 y 4 = 1 4 y 1 + 3 4 y 2 - - - ( 3 )
According to actual conditions the original coordinates of images of left and right eyes is carried out the location coordinate information that conversion obtains images of left and right eyes then.
Present embodiment uses graphical application DLL (dynamic link library) OpenGL to draw a cube, utilizes this system to realize the stereo-picture output of real-time multi-angle, and concrete steps are:
The first step: ultrasonic ranging array 2 obtains range information.
The ultrasonic transmitter T1 and the T2 that are contained in shutter glasses 4 both sides launch ultrasound wave to three ultrasonic receiver R1, R2 and R3 respectively, detect and learn the time t that ultrasound wave is experienced to ultrasonic receiver Rj from ultrasonic transmitter Ti TiRj, concrete numerical value is respectively:
t T1R1＝2.60ms，t T1R2＝3.11ms4.4ms，t T1R3＝2.65ms，
t T2R1＝2.66ms，t T2R2＝3.21ms4.3ms，t T2R3＝2.74ms。
The speed V=340m/s that known ultrasound wave is propagated in air, six range information d that calculate by formula (1) TiRjBe respectively:
d T1R1＝V×t T1R1＝0.884m，d T1R2＝V×t T1R2＝1.057m，d T1R3＝V×t T1R3＝0.901m，
d T2R1＝V×t T2R1＝0.904m，d T2R2＝V×t T2R2＝1.093m，d T2R3＝V×t T2R3＝0.933m。
Second step: position information process device 2 calculates the positional information of images of left and right eyes.
Six range information d that calculate TiRjBe transferred to position information process device 2, position information process device 2 calculates the original coordinates of images of left and right eyes according to formula (2) and (3), known W=0.4m in the present embodiment, H=0.35m then calculates: the left eye original coordinates is (0.207,0.132,0.867), the right eye original coordinates is (0.178,0.132,0.908).
The OpenGL coordinate system that present embodiment uses is to be the xoy plane with display 6, and the center of display 6 is the initial point on xoy plane, and vertical display 6 outside directions are the z direction of principal axis.So the images of left and right eyes original coordinates that calculates will be to x axle positive dirction translation W/2, to y axle positive dirction translation H/2, the left eye position coordinates that obtains after the translation like this is (0.407 ,-0.043,0.867), the right eye position coordinates is (0.378 ,-0.043,0.908).
The 3rd step: computing machine 1 is drawn left-eye image according to the left eye position coordinates.
Position information process device 2 is transferred to computing machine 1 with the images of left and right eyes position coordinates, computing machine 1 calls the gluLookAt () function among the OpenGL, with left eye position coordinates (0.407,-0.043,0.867) three coordinate parameters draw cube as first three input parameter of this function, thereby obtain left-eye image.
The 4th step: computing machine 1 control display 6 and shutter glasses 4 show left-eye image synchronously.
The left-eye image of drawing is presented on the display 6, sends synchronous control signal simultaneously, make its liquid crystal lens that covers right eye, only allow left eye observe image on the display 6 to shutter glasses 4.The observed image of shutter eyes 4 left eyes as shown in Figure 4.
The 5th step: computing machine 1 is drawn eye image according to the right eye position coordinates.
Computing machine 1 calls gluLookAt () function once more, three coordinate parameters of right eye position coordinates (0.378 ,-0.043,0.908) is drawn cube as first three input parameter of this function, thereby obtain eye image.
The 6th step: computing machine 1 control display 6 and shutter glasses 4 show eye image synchronously.
The eye image of drawing is presented on the display 6, sends synchronous control signal simultaneously, make its liquid crystal lens that covers left eye, only allow right eye observe image on the display 6 to shutter glasses 4.The observed image of shutter eyes 4 right eyes as shown in Figure 5.
Constantly repeat above-mentioned steps successively, when left-and right-eye images was alternately enough fast, human brain can merge left-and right-eye images, thereby forms stereoscopic visual effect.When shutter glasses 4 users' position and visual angle change, corresponding images of left and right eyes position coordinates also can change, change thereby left-and right-eye images is also corresponding,, can both Real Time Observation arrive distortionless stereo-picture therefore as long as in the user can see the scope of display 6.

Claims (3)

1. system for realizing real-time multi-angle three-dimensional sight, it is characterized in that, comprise: ultrasonic ranging array, position information process device, computing machine and shutter glasses, wherein: the ultrasonic ranging array links to each other with the position information process device and transmits hyperacoustic move distance information, the position information process device links to each other with computing machine and transmits the positional information of images of left and right eyes, the computing machine transmitting synchronous control information that links to each other with shutter glasses, ultrasonic ranging array respectively with the computing machine transmission ultrasound information that links to each other with shutter glasses.
2. system for realizing real-time multi-angle three-dimensional sight according to claim 1, it is characterized in that, described ultrasonic ranging array comprises: two ultrasonic transmitters and three ultrasonic receivers, two ultrasonic transmitters are arranged on the left and right sides of shutter glasses, and three ultrasonic receivers are separately positioned on the last angle and the inferior horn of computing machine.
3. system for realizing real-time multi-angle three-dimensional sight according to claim 2 is characterized in that, described ultrasonic receiver, and its each ultrasonic transmitter of transmission that links to each other with the position information process device is to the range information between each ultrasonic receiver.
CN200910195135A 2009-09-04 2009-09-04 System for realizing real-time multi-angle three-dimensional sight Pending CN101782685A (en)

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Cited By (14)

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US20120038757A1 (en) * 2010-08-16 2012-02-16 Ching-An Lin Method for playing corresponding 3d images according to different visual angles and related image processing system
CN102378016A (en) * 2010-08-20 2012-03-14 纬创资通股份有限公司 Method for playing corresponding stereoscopic images according to different viewing angles and system for processing stereoscopic images
WO2012079252A1 (en) * 2010-12-17 2012-06-21 海尔集团公司 Three-dimensional image display system
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WO2014206013A1 (en) * 2013-06-28 2014-12-31 北京智谷睿拓技术服务有限公司 Imaging adjustment device and imaging adjustment method
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CN102572460A (en) * 2010-08-09 2012-07-11 Lg电子株式会社 3D viewing device, image display apparatus, and method for operating the same
US8836773B2 (en) 2010-08-16 2014-09-16 Wistron Corporation Method for playing corresponding 3D images according to different visual angles and related image processing system
US20120038757A1 (en) * 2010-08-16 2012-02-16 Ching-An Lin Method for playing corresponding 3d images according to different visual angles and related image processing system
CN102378016A (en) * 2010-08-20 2012-03-14 纬创资通股份有限公司 Method for playing corresponding stereoscopic images according to different viewing angles and system for processing stereoscopic images
WO2012079252A1 (en) * 2010-12-17 2012-06-21 海尔集团公司 Three-dimensional image display system
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