CN2911717Y - Raster tracer in free 3-D displaying device - Google Patents

Raster tracer in free 3-D displaying device Download PDF

Info

Publication number
CN2911717Y
CN2911717Y CN200620074323.6U CN200620074323U CN2911717Y CN 2911717 Y CN2911717 Y CN 2911717Y CN 200620074323 U CN200620074323 U CN 200620074323U CN 2911717 Y CN2911717 Y CN 2911717Y
Authority
CN
China
Prior art keywords
grating
auto
display
actuated
stereoscopic display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200620074323.6U
Other languages
Chinese (zh)
Inventor
王元庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University
Original Assignee
Nanjing University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing University filed Critical Nanjing University
Priority to CN200620074323.6U priority Critical patent/CN2911717Y/en
Application granted granted Critical
Publication of CN2911717Y publication Critical patent/CN2911717Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

The utility model relates to an optical grating follow-up device in an auto-stereoscopic display. A slit optical grating producing a stereoscopic pattern is arranged on the rear part of the display, a camera is positioned on the upside or the underside of the display crystal screen for capturing and confirming the face position of a watcher; the optical grating is arranged on the shift platform following up the head of the user and controlling the side to side movement; the shift control platform controls the optical grating movement; the adjustment of the optical grating position is realized through the movement of the shift platform. Through detecting the information on the user face position, and providing an optimum stereoscopic display window for the watcher, the stereoscopic angular field is enlarged.

Description

The device of grating servo-actuated in the auto-stereoscopic display
Technical field
The utility model relates to the method and apparatus of grating servo-actuated of method to set up and device, the especially three-dimensional display of three-dimensional display.
Background technology
Three-dimensional lcd technology based on parallax is of long duration.But the demonstration of traditional stereo-picture need be by aid, as polarised light glasses, macyscope etc.This must limit its application in some field.And if adopt free 3 D display technology, the beholder just can bore hole see stereoeffect.Domestic in the existing remarkable progress of the research aspect this.Based on LCD, by the parallax illumination light source that parallax grating forms, realize that free stereo shows, be a kind of new auto-stereoscopic display.But, also be that most possibly to realize and take two minimum width of cloth stereo-pictures of resource right if the image resource of free stereo adopts international, the problem that will bring beholder's angular field of view to be restricted thus.Because the parallax illumination light source that parallax grating forms can only bring stereoeffect to the beholder in less angle, its application is limited.
Summary of the invention
The utility model purpose is: in order to address the above problem, propose a kind of utilization observer's (observer's head) is carried out the device with motion tracking, be used to realize the scheme that the wide visual angle of three-dimensional liquid crystal shows, promptly survey the information of beholder people's face position, and best stereo display window offered the beholder all the time, thereby enlarge the perspective view scope.
The device of grating servo-actuated in the auto-stereoscopic display, the rear portion in display are provided with the slit grating that produces space pattern, place camera above or below the display crystalline substance shields, and are used for catching and definite onlooker's face location; Grating is located on the displacement platform that carries out side-to-side movement control along with onlooker's head tracking; Displacement control platform control grating moves; By moving of translation stage, realize the adjustment of stop position.The window of three-dimensional imaging is followed the beholder all the time, and like this, no matter beholder's eyes can be watched stereo-picture for which position, have enlarged the visual angle of three-dimensional display.
Grating is by the control of displacement control platform; By moving of translation stage, realize the adjustment of stop position.
Catch and scheme that the method for definite onlooker's face location can adopt the applicant to propose simultaneously: place camera by the liquid crystal display top, catch and definite onlooker's face location; Employing utilizes the structured light generation device that people's face is initiatively throwed based on people's face-positioning method of structured light, with image-pickup device structural light stripes is extracted; Structured light is that the concavo-convex relatively surperficial glazed thread that level (or vertical) is projeced into people's face will bend; Direction with the row of one dimension convolution factor pair pattern matrix is carried out convolution, and initial striped obtains refinement and selects suitable threshold to extract striped; People's face pre-determined bit based on vertical integral projection: according to the vertical integral projection formula, obtaining reacting face characteristic is vertical integral projection, and finishes people's face pre-determined bit based on vertical integral projection at the spike of image capture people face observation scope; Accurately locate: the feature that people's structural light stripes on the face obviously protrudes according to people's nose produces transition clearly, its striped is compared obviously downwards when vertical light (or bending) bending with other stripeds, integral projection is found out the minimum point of vertical integral projection in vertical direction, and, determine people's face center from the minimum point coordinate figure of domain integral projection according to the architectural feature of people's face symcenter.
The utility model effect by surveying the information of beholder people's face position, and offers the beholder all the time with best stereo display window, thereby enlarges the perspective view scope.Can adopt modes such as single-chip microcomputer that the displacement of stepping motor is controlled.Single-chip microcomputer receives data-signal, by driver, drives stepping motor and moves to corresponding position (by the stop position decision of system).Stepping motor adopts subdivision driver control, can realize moving of micro-displacement.
Description of drawings
Fig. 1 is the displacement control method synoptic diagram of the utility model step motor control translation stage and optical grating constitution
Fig. 2 is the space distribution synoptic diagram between the effective viewing area of stereotelevision
Fig. 3 single-chip microcomputer displacement control program process flow diagram,
People's face 1, grating 2, displacement control translation stage 3, grating move to left 4, people's face direction of arrow 6 that horizontal move left and right direction 5, grating move to right before screen, camera 7, liquid crystal display 8.
Embodiment
Onlooker's head tracing system is a kind of causal system that can follow-observation person's change in location, as shown in Figure 1.The display device of stereo-liquid crystal display device is a liquid crystal display, and it is positioned at the outermost layer of structure, is used for display image; The CMOS camera is placed in the top of liquid crystal display, is used for catching people's face position; The back of liquid crystal display is a grating.Grating is by the control of displacement control platform.By moving of translation stage, can realize the adjustment of stop position.When people's face was in the A observation place of screen center normal to screen normal direction, the position of grating was in A '; Then work as people's face and depart from A, when moving to the B viewing location left, stop position is also correspondingly adjusted to B '; In like manner, when people's face moved right C ' viewing location, stop position also can be adjusted to C '.We suppose that the window width that can observe best stereoeffect is B when the beholder is in the A position 0
Generally speaking, having only when people's face is in A is that center, width are B 0The stereo window scope in the time, the beholder can observe best stereoeffect.This has just caused the beholder to get the visual angle being restricted.Therefore, in order to enlarge the visual angle of stereo display, must adjust relative position between the liquid crystal display of grating and display image according to beholder's face location, promptly carrying out the microfacies potential difference regulates, thereby make beholder's earthquake head position, when moving to B window or C window ranges, still can watch best stereoeffect from the A window.
As shown in Figure 2, and in people's face is in effective viewing area (L, in the time of R), beholder's right and left eyes can only be watched left image and right image just respectively, and this moment, three-dimensional display had best stereo display effect [1]And, in the stereo window scope, the influence that the observation stereoeffect is not changed by beholder's head position.But in the time of outside the beholder moves to stereo window, human eye observation stereo-picture can feel fuzzy, and just need according to people's face position the position of grating to be adjusted this moment.As long as the displacement of grating and the displacement of people's face position are consistent,, still can obtain best observation effect even the beholder is in outside the stereo window.
Moving of grating, be to realize, reduce vibration, improve stepping accuracy because stepper motor can utilize segmentation to drive by motion by the translation stage of step motor control, therefore, we adopt the sub-circuit drive stepping motor to reach the accurate purpose that the displacement control desk moves that promotes.Control desk is provided with the movement transferring that the angular displacement of stepper motor is converted to the horizontal shift of translation stage by screw rod.
Stop position adjustment amount: Δ p=B 0* β, in the formula: Δ p is the grating amount of movement; B 0Be the stereo window width; β is an imaging projection ratio, gets 800 -About 1200.
Program circuit as shown in Figure 3.At first, set up single-chip microcomputer and upper machine communication by the RS-232 serial communication.When people's face moves in display screen the place ahead, its corresponding coordinate information will be transferred to single-chip microcomputer by host computer.Single-chip microcomputer receives and stores this coordinate figure, afterwards, by judgment processing, exports the pulse number of the control step motor corresponding with coordinate information, thereby realizes that single-chip microcomputer is to step motor control.Now be applied in the control device of three-dimensional display.

Claims (4)

1, the device of grating servo-actuated in the auto-stereoscopic display, the rear portion in display are provided with the slit grating that produces space pattern, place camera above or below the display crystalline substance shields, and are used for catching and definite onlooker's face location; It is characterized in that grating is located on the displacement platform that carries out side-to-side movement control along with onlooker's head tracking; Displacement control platform control grating moves; By moving of translation stage, realize the adjustment of stop position.
2, the device of grating servo-actuated in the auto-stereoscopic display according to claim 1 is characterized in that the direction of motion of slit grating is opposite with the direction of motion of onlooker's head.
3, the device of grating servo-actuated in the auto-stereoscopic display according to claim 1 is characterized in that the stop position adjustment amount: Δ p=B 0* β, in the formula: Δ p is the grating amount of movement; B 0Be the stereo window width; β is an imaging projection ratio, gets about 800-1200.
4, the device of grating servo-actuated in the auto-stereoscopic display according to claim 1, the mobile platform that it is characterized in that grating is that the translation stage by step motor control moves and realizes, is provided with the movement transferring that the angular displacement of stepper motor is converted to the horizontal shift of translation stage by screw rod.
CN200620074323.6U 2006-06-29 2006-06-29 Raster tracer in free 3-D displaying device Expired - Fee Related CN2911717Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200620074323.6U CN2911717Y (en) 2006-06-29 2006-06-29 Raster tracer in free 3-D displaying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200620074323.6U CN2911717Y (en) 2006-06-29 2006-06-29 Raster tracer in free 3-D displaying device

Publications (1)

Publication Number Publication Date
CN2911717Y true CN2911717Y (en) 2007-06-13

Family

ID=38133584

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200620074323.6U Expired - Fee Related CN2911717Y (en) 2006-06-29 2006-06-29 Raster tracer in free 3-D displaying device

Country Status (1)

Country Link
CN (1) CN2911717Y (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102033324A (en) * 2010-12-17 2011-04-27 深圳创维-Rgb电子有限公司 Method and system for adjusting visual range of grating barrier type 3D display system
CN102136225A (en) * 2010-01-22 2011-07-27 索尼公司 Image display device having imaging device
CN102395039A (en) * 2011-11-18 2012-03-28 南开大学 Follow-up illuminating free stereo video image display
CN102447938A (en) * 2011-12-05 2012-05-09 深圳市九洲电器有限公司 Video effect enhancing method applied to naked-eye 3D video and apparatus thereof, and video effect enhancer
CN102510505A (en) * 2011-09-30 2012-06-20 深圳超多维光电子有限公司 Three-dimensional display device and control method thereof and controller
WO2012097503A1 (en) * 2011-01-18 2012-07-26 青岛海信信芯科技有限公司 Control method and apparatus for stereoscopic display
CN102798982A (en) * 2012-08-31 2012-11-28 深圳超多维光电子有限公司 Stereo display equipment and stereo display control method
CN103392342A (en) * 2011-12-21 2013-11-13 青岛海信电器股份有限公司 Method and device for adjusting viewing area, and device for displaying three-dimensional video signal
CN103595993A (en) * 2013-11-08 2014-02-19 深圳市奥拓电子股份有限公司 LED naked eye 3D display system based on intelligent recognition technology and working method thereof
CN103616767A (en) * 2013-11-29 2014-03-05 南京大学 Parallax illumination multi-view auto-stereoscopic display device and method
WO2015100924A1 (en) * 2013-12-30 2015-07-09 京东方科技集团股份有限公司 Stereoscopic display
CN105934699A (en) * 2013-07-12 2016-09-07 法雷奥舒适驾驶助手公司 Method and device for detecting the position of the face of a person, in particular of a motor vehicle driver, and display including such a device
CN105999700A (en) * 2016-07-20 2016-10-12 深圳市龙祥卓越电子科技有限公司 Three-dimensional entertainment device
CN108495116A (en) * 2018-03-29 2018-09-04 京东方科技集团股份有限公司 3D display device and its control method, computer equipment

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136225B (en) * 2010-01-22 2014-10-22 索尼公司 Image display device having imaging device
CN102136225A (en) * 2010-01-22 2011-07-27 索尼公司 Image display device having imaging device
CN102033324A (en) * 2010-12-17 2011-04-27 深圳创维-Rgb电子有限公司 Method and system for adjusting visual range of grating barrier type 3D display system
WO2012097503A1 (en) * 2011-01-18 2012-07-26 青岛海信信芯科技有限公司 Control method and apparatus for stereoscopic display
US8879830B2 (en) 2011-01-18 2014-11-04 Hisense Hiview Tech Co., Ltd. Control method and apparatus for stereoscopic display
CN102510505B (en) * 2011-09-30 2015-04-15 深圳超多维光电子有限公司 Three-dimensional display device and control method thereof and controller
CN102510505A (en) * 2011-09-30 2012-06-20 深圳超多维光电子有限公司 Three-dimensional display device and control method thereof and controller
CN102395039A (en) * 2011-11-18 2012-03-28 南开大学 Follow-up illuminating free stereo video image display
CN102395039B (en) * 2011-11-18 2013-09-11 南开大学 Follow-up illuminating free stereo video image display
CN102447938A (en) * 2011-12-05 2012-05-09 深圳市九洲电器有限公司 Video effect enhancing method applied to naked-eye 3D video and apparatus thereof, and video effect enhancer
CN103392342B (en) * 2011-12-21 2016-02-10 青岛海信电器股份有限公司 The method and apparatus of vision area adjustment, the equipment of three-dimensional video signal can be realized
US9838673B2 (en) 2011-12-21 2017-12-05 Hisense Electric Co., Ltd. Method and apparatus for adjusting viewing area, and device capable of three-dimension displaying video signal
CN103392342A (en) * 2011-12-21 2013-11-13 青岛海信电器股份有限公司 Method and device for adjusting viewing area, and device for displaying three-dimensional video signal
CN102798982A (en) * 2012-08-31 2012-11-28 深圳超多维光电子有限公司 Stereo display equipment and stereo display control method
CN102798982B (en) * 2012-08-31 2015-11-25 深圳超多维光电子有限公司 A kind of stereoscopic display device and stereo display control method
US9609310B2 (en) 2012-08-31 2017-03-28 Superd Co. Ltd. Apparatus and control method for stereoscopic display using viewer's position information
US9854230B2 (en) 2012-08-31 2017-12-26 Superd Co. Ltd. Apparatus and control method for stereoscopic display
CN105934699A (en) * 2013-07-12 2016-09-07 法雷奥舒适驾驶助手公司 Method and device for detecting the position of the face of a person, in particular of a motor vehicle driver, and display including such a device
CN105934699B (en) * 2013-07-12 2019-08-16 法雷奥舒适驾驶助手公司 Detect the method, apparatus of the position of face, particularly motor vehicle driver face and the display with the device
CN103595993A (en) * 2013-11-08 2014-02-19 深圳市奥拓电子股份有限公司 LED naked eye 3D display system based on intelligent recognition technology and working method thereof
CN103616767A (en) * 2013-11-29 2014-03-05 南京大学 Parallax illumination multi-view auto-stereoscopic display device and method
WO2015100924A1 (en) * 2013-12-30 2015-07-09 京东方科技集团股份有限公司 Stereoscopic display
US9958688B2 (en) 2013-12-30 2018-05-01 Boe Technology Group Co., Ltd. Stereoscopic display
CN105999700A (en) * 2016-07-20 2016-10-12 深圳市龙祥卓越电子科技有限公司 Three-dimensional entertainment device
CN108495116A (en) * 2018-03-29 2018-09-04 京东方科技集团股份有限公司 3D display device and its control method, computer equipment
US10764568B2 (en) 2018-03-29 2020-09-01 Beijing Boe Optoelectronics Technology Co., Ltd. 3D display device, method for controlling the same and computing device

Similar Documents

Publication Publication Date Title
CN2911717Y (en) Raster tracer in free 3-D displaying device
CN104137538B (en) Can be applied to multiple observers is used to extend using dynamic vision area showing the devices and methods therefor of multiple views 3D rendering
CN102944935B (en) Binocular head-wearing display device and method thereof for adjusting image spacing
JP4900741B2 (en) Image recognition apparatus, operation determination method, and program
US9554126B2 (en) Non-linear navigation of a three dimensional stereoscopic display
CN104469341B (en) Display device and its control method
JP6339239B2 (en) Head-mounted display device and video display system
US9880457B2 (en) Apparatus for the automatic positioning of coupled cameras for three-dimensional image representation
JP5114795B2 (en) Image recognition apparatus, operation determination method, and program
TWI486631B (en) Head mounted display and control method thereof
CN102123291B (en) Intelligent naked-eye stereoscopic display system and control method thereof
CN108174182A (en) Three-dimensional tracking mode bore hole stereoscopic display vision area method of adjustment and display system
CN101065783A (en) Horizontal perspective display
CN104094596A (en) Glasses-free 3d image display device for flattening field of view and minimizing dynamic crosstalk
KR101661991B1 (en) Hmd device and method for supporting a 3d drawing with a mobility in the mixed space
CN202267785U (en) Naked eye three-dimensional display structure for automatically tracking human eye position
CN108616752B (en) Head-mounted equipment supporting augmented reality interaction and control method
CN103392342A (en) Method and device for adjusting viewing area, and device for displaying three-dimensional video signal
CN103686133A (en) Image compensation device for open hole stereoscopic display and method thereof
CN104618706A (en) Time-sharing multi-user multi-angle holographic stereo display implementation mobile terminal and method
DE102012223085A1 (en) STEREOSCOPIC IMAGING SYSTEM AND METHOD THEREFOR
CN104661012A (en) Individual holographic three-dimensional display method and equipment
CN105445948A (en) Naked eye 3D display apparatus and display method
CN105717644A (en) Image adjusting method and device and applicable intelligent glasses
CN107181939A (en) Naked eye three-dimensional imaging method and system based on camera

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee