CN108111838A - A kind of bore hole 3D display correcting fixture and bearing calibration - Google Patents
A kind of bore hole 3D display correcting fixture and bearing calibration Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of bore hole 3D display correcting fixture and bearing calibrations.Wherein, bore hole 3D display correcting fixture includes：Camera is corrected, the shown red blue interlaced video on filmed display screen；Slide, the normal parallel with display screen plane correct camera for placing；Traction electric machine is arranged on slide, is slided for drawing correction camera in the different position of slide；Computer red blueprint and is shown for interweaving, and receives the image of correction camera shooting, and then the image and emulation intersection chart shot according to correction camera carries out graphical analysis comparison, determine actual cycle offset, actual slope offset and central viewpoint offset.The embodiment of the present invention carries out analyzing definite actual cycle offset and actual slope offset by the image to shooting at least two positions and emulating image, realizes the automated correction of 3D modules, improves correction accuracy and efficiency, reduces cost of labor.
Description
Technical field
The present embodiments relate to 3D display technical field more particularly to a kind of bore hole 3D display correcting fixture and correction sides
Method.
Background technology
With the development of 3D display technology, user can be directly logical in the case where not wearing the ancillary equipments such as 3D glasses
It crosses bore hole 3D display module and watches 3D display effect.3D display module includes optical element and display screen, works as optical element
With display screen after production is dispatched from the factory, when being installed and used, actual imaging parameters would generally have centainly with design parameter
Error, needed before 3D imagings are carried out carry out 3D module imaging parameters correction.
In the prior art, 3D display correction is mostly completed using artificial method, i.e., in the form of trial and error, constantly corrects ginseng
Number, by artificial judgment, obtains corrected value.For example, when correctly being shown based on viewpoint figure, then only in the visible 3D display of certain area
The principle of effect uses more and shows some cycles signal on the screen, and in the method for certain position (viewpoint) artificial judgment.
But the method efficiency being corrected by the method for artificial judgment is low, it is inaccurate.In addition, for human eye with
Track enhances 3D display system, has no known ripe scheme and is corrected for showing.
The content of the invention
The embodiment of the present invention provides a kind of bore hole 3D display correcting fixture and bearing calibration, is automatically performed with realizing in human eye
The 3D display correction of tracking enhancing 3D display system, improves correction work efficiency.
In a first aspect, an embodiment of the present invention provides a kind of bore hole 3D display correcting fixture, which includes：
Camera is corrected, it is inclined according to default row figure cycle and default row's figure cycle shown by filmed display screen
Image after shifting amount, default row's figure slope and default row's figure slope deviation amount intertexture；
Slide is arranged at the center origin of display screen and perpendicular to display screen plane, with display screen plane
Normal parallel corrects camera for placing, and correction camera can be slid on slide at different position；
Traction electric machine is arranged on slide, when correction camera needs the different position captured image in slide to determine to arrange
When scheming the cycle, slided for drawing correction camera in the different position of slide；
Computer for scheming cycle and slope and the red blueprint of offset intertexture according to default row and being shown, receives school
The image of positive camera shooting, and then the image and emulation intersection chart that are shot according to correction camera carry out graphical analysis comparison,
Determine actual cycle offset, actual slope offset and central viewpoint offset.
Second aspect, the embodiment of the present invention additionally provide a kind of bore hole 3D display bearing calibration, and this method includes：
In correction camera at display screen first position, cycle, default row's figure slope and pre- are schemed according to default row
If offset completion row's figure is shown and analogue simulation, the first red blue intersection chart and the first analogous diagram are obtained, to the described first red indigo plant
Intersection chart and the first analogous diagram carry out Fourier analysis, and according to Fourier analysis result optical component model are carried out approaching meter
It calculates, obtains updated optical model cycle, slope, iteration simulation process, until emulation with display measures of dispersion less than pre-
If error threshold values, the first row figure cycle at the first position and first row figure slope are determined；
In correction camera apart from the display screen second place, cycle, default row's figure slope and pre- are schemed according to default row
If offset completion row's figure is shown and analogue simulation, the second red blue intersection chart and the second analogous diagram are obtained, to the described second red indigo plant
Intersection chart and Fourier analysis is carried out with the first analogous diagram, and optical component model is approached according to Fourier analysis result
It calculates, obtains updated optical model cycle, slope, iteration simulation process, until emulation and display measures of dispersion are less than
Default error threshold values, determine in the second row figure cycle of the second place and second row figure slope；According to the first row
Figure cycle and second row figure cycle determine the actual cycle of optical element and the distance between optical element and display screen；
Determine the actual slope of optical element as row's figure slope according to first row figure slope and second row figure slope；
It is determined according to the distance between the actual cycle of optical element, optical element and display screen and human eye depth relationship
Row's figure cycle.
The embodiment of the present invention forms 3D display correcting fixture by correcting camera, slide, traction electric machine, computer, leads
Draw motor traction correction camera and interlaced video is shot at least two positions of slide, by computer analysis correction camera
The interlaced video of shooting is with emulation intersection chart and then determines the actual cycle and slope of optical element in optics module, can be shown in 3D
Show that row's figure avoids image or so aliasing or reversion in the process, it is achieved thereby that 3D display system automatically corrects, improve correction
Efficiency reduces cost of labor.
Description of the drawings
Fig. 1 is the schematic diagram of the bore hole 3D display correcting fixture in the embodiment of the present invention one；
Fig. 2 is the schematic diagram of the red blue intersection chart in the 3D display in the embodiment of the present invention one；
Fig. 3 is that 3D modules actual cycle, slope and design in the embodiment of the present invention one have offset schematic diagram；
Fig. 4 is the flow chart of the bore hole 3D display bearing calibration in the embodiment of the present invention two；
Fig. 5 is influence schematic diagram of the position of human eye variation in the embodiment of the present invention two to row's figure cycle.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrated only in description, attached drawing.
Embodiment one
Fig. 1 is the schematic diagram for the bore hole 3D display correcting fixture that the embodiment of the present invention one provides, and the present embodiment is applicable to
The situation of 3D display module correction.As shown in Figure 1, the bore hole 3D display correcting fixture specifically includes：
Camera 110 is corrected, scheming according to default row figure cycle and default row shown by filmed display screen is all
Image after phase offset, default row's figure slope and default row's figure slope deviation amount intertexture.
Specifically, correction camera 110, is positioned on slide, can be slided compared with slide, camera 110 is corrected
Optical axis align display screens curtain center.Figure cycle and default row's figure period migration amount, design are arranged when screen display according to design to arrange
Figure slope and default row's figure slope deviation amount interweave after image when, correction camera can be shot, then will be captured
Image is sent to computer 140 and carries out graphical analysis.
Slide 120 is arranged at the center origin of display screen and perpendicular to display screen plane, with display screen plane
Normal parallel, for place correct camera, correction camera can be slid on slide at different position.
In Fig. 1, display screen 150 and the intersection point of horizontal dotted line are the center origin of screen, and slide 120 is empty with level
Line overlaps, perpendicular to display screen 150.
Traction electric machine 130, is arranged on slide, when correction camera 110 needs the different position shooting figure in slide 120
When scheming the cycle as the row of determining, slided for drawing correction camera 110 in the different position of slide 120.
In the present embodiment, the merely exemplary position for showing traction electric machine 130 and being arranged on slide 120, specifically
Setting of the traction electric machine 130 when the position on slide 120 depends on correcting fixture in practical application.
Computer 140 for scheming cycle and slope and the red blueprint of offset intertexture according to default row and being shown, receives
The image that camera 110 is shot is corrected, and then the image and emulation intersection chart that are shot according to correction camera 110 carry out image point
Analysis compares, and determines actual cycle offset, actual slope offset and central viewpoint offset.Wherein, preset row figure the cycle and
Default row's figure slope is that the design cycle of reference optical element is definite with slope is designed, and passes through the red blue intersection chart to be formed
The optical element of periodic arrangement can generate Moire fringe (Moire Pattern) phenomenon when being shown.
Wherein, it can be prism or grating that optical element, which includes,.
Specifically, tracing of human eye bore hole 3D display is a kind of detection eye space position (depth information) first, Ran Houdong
The method that state adjusts the generation of abnormal conditions such as bore hole 3D display method, the image inversion watched to avoid right and left eyes.
Tracing of human eye bore hole 3D display system is made of two parts.First portion is bore hole 3D display part：Mainly by 3D
Module is formed with screen, can form the right and left eyes parallax needed for 3D display in different spaces region project different content；Second
It is divided into tracing of human eye part：It is mainly made of camera and computing unit, for estimating human eye position in space, dynamically to adjust
Save display content.Tracing of human eye bore hole 3D organically combines tracing of human eye and bore hole 3D display technology, by pressing position of human eye
Dynamic regulation deinterleaving method completes more preferably 3D display.Wherein, 3D modules are for the optical element of 3D visual effects to be presented
Combination, optical element arranged according to certain cycle and slope.
Further, the parameter of the right and left eyes image interleaving algorithm of 3D display image include row's figure slope, row's figure cycle and
Arrange map migration amount.Wherein, it is consistent with optical element slope to arrange figure slope；Map migration amount is arranged to can be used for for eyes of user or so position
The intertexture put is adjusted；Row can be used for the intertexture for eyes of user front and back position to adjust in the figure cycle, and human eye depth is different, row's figure week
Phase is also just different.The intertexture of 3D display image is as shown in Fig. 2, wherein, the image that left eye and right eye can be seen is filled out with different
Form is filled to distinguish, and the red blueprint of intertexture formed can be that left eye sees that RED sector right eye sees blue portions
Left eye can be made to see that blue portion right eye sees red part.
3D display correction is mainly used for matching relation between 3D modules and screen.Due to inevitably existing in production process
Error, 3D modules actual cycle as shown in Figure 3, slope and design exist shown in offset schematic diagram, wherein, Pr is actual prism
Cycle, Pd are the design prism cycle, and Sr is actual prism slope, and Sd is to design prism slope, 3D module actual parameters, such as week
Phase, slope can have offset, it is necessary to be matched by the completion of 3D display aligning step, in addition, central viewpoint deviation with design parameter
Value (design load should be zero) is also required to be corrected.Illustratively, the design in Fig. 3 is that the different optical element of three row is one
Cycle, the rectangle of no filling content represent that display right eye watches the optical element of image, and the rectangle for having inclined stripe filling is
Display left eye watches the optical element of image, however, the actual conditions after production may be the row shown in solid box
Arrange cycle and slope.
In correction course, when correction camera 110 is at the first position of slide 120, computer 140 is according to optics member
The design slope of part is completed to interweave and be shown to display plus certain deviation amount plus certain deviation amount, design cycle to blue red figure
On screen 150.Then the image in central viewpoint is obtained using the shooting of correcting camera 110, MoirePattern can be observed
Phenomenon.Meanwhile computer 140 simulates 3D display module according to the design cycle and design slope of optical element, and emulate and obtain
Scheme the design sketch that cycle, default row's figure slope and corresponding default bias amount carry out row's figure and show according to default row, meanwhile, at this
MoirePattern phenomenons can be observed in design sketch, and then, the red blue intersection chart and simulated effect figure shot to computer 140
Fourier analysis is carried out, the parameter of optical element is adjusted according to Fourier analysis result, is obtained according to the parameter after adjusting new
Emulating image, and then Fourier analysis is carried out to the red blue intersection chart and new analogous diagram of the shooting of computer 140, until adjusting
The error of optical component parameter and design parameter after section determines that a row schemes cycle and row's figure slope in tolerance interval.
Then by traction electric machine 130 draw correction camera 110 120 on slide on be moved to the second place, repeat with top
Method completes the measurement in second position red blueprint intertexture cycle, intertexture slope.So as to determine the actual row of optical element
Scheme two parameters of distance of cycle and optical element and display screen 150, it is correct to be shown in 3D display imaging process
The image of left eye and right eye.
The technical solution of the present embodiment forms 3D display and corrects by correcting camera, slide, traction electric machine, computer
Gauge, the red blue friendship of shooting on the display screen at least two different positions on slide of traction electric machine traction correction camera
Image is knitted, computer determines light in 3D modules by the intersection chart that the image captured by analysis correction camera is emulated with it
The actual cycle offset of element and slope deviation amount are learned, so that after calibration central viewpoint offset, at center,
Right and left eyes finding is schemed for correctly left and right.It solves the problem of manual synchronizing is of high cost, and efficiency is low, and correction accuracy is low, improves
Correction efficiency reduces the cost of manual synchronizing.
Embodiment two
Fig. 4 is the flow chart of bore hole 3D display bearing calibration provided by Embodiment 2 of the present invention, suitable for 3D display module
The situation of correction, this method can be realized by the bore hole 3D display correcting fixture in above-described embodiment.This method specifically includes：
S410, camera is being corrected at display screen first position, cycle, default row's figure slope are schemed according to default row
And default bias amount completion row's figure is shown and analogue simulation, the first red blue intersection chart and the first analogous diagram is obtained, to described first
Red indigo plant intersection chart and the first analogous diagram carry out Fourier analysis, and optical component model is connect according to Fourier analysis result
It is near to calculate, obtain updated optical model cycle, slope, iteration simulation process, until emulation and display measures of dispersion are small
In default error threshold values, the first row figure cycle at the first position and first row figure slope are determined.
Wherein, default period migration amount and default slope deviation amount, are that those skilled in the art rule of thumb set
The value put represents optical element in one of actual value and design load of cycle and slope after producing substantially inclined
Poor scope in the range of this, determines actual period migration amount, slope deviation amount by correction course, and then determines actual
Cycle and slope.In addition, first position can illustratively be arranged to distance of the correcting camera with display screen on slide
At the position of d1, as shown in Figure 1.
Further, determine that the first row figure cycle at first position and first row figure slope include the following steps：
First, 3D display module can be shown schemes cycle and default row's figure slope and default bias by computer according to default row
Amount interweaves obtained red blue intersection chart, default row scheme the cycle and default row's figure slope be reference optical element design cycle and
Design slope and definite, the red blue intersection chart for alloing to be formed generates not when being shown by the optical element of periodic arrangement
That striped (Moire Pattern) phenomenon obtains the first red blue intersection chart when correction camera shoots the red blue intersection chart, and
The figure is sent on computer.
At the same time, computer can simulate 3D display module according to the design cycle and design slope of optical element, then
Scheme the cycle according to default row and default row's figure slope carries out row's figure and shows to obtain the first analogous diagram.
And then computer can blue intersection chart red to first and the first analogous diagram carry out Fourier analysis, according to the two
Between frequency difference adjust optical element parameter, obtain updated optical model cycle, slope, iteration emulated
Journey obtains new emulating image according to the parameter after adjusting, and then carries out Fourier to the first red blue intersection chart and new analogous diagram
Leaf spectrum analysis until the optical component parameter after adjusting and the error of design parameter are in tolerance interval, will be adjusted finally
Row afterwards schemes cycle and row's figure slope as first row figure cycle and first row figure slope.
S420, camera is being corrected apart from the display screen second place, cycle, default row's figure slope are schemed according to default row
And default bias amount completion row's figure is shown and analogue simulation, the second red blue intersection chart and the second analogous diagram is obtained, to described second
It is red indigo plant intersection chart and with the first analogous diagram carry out Fourier analysis, and according to Fourier analysis result to optical component model carry out
Close to calculating, updated optical model cycle, slope, iteration simulation process, until emulation and display measures of dispersion are obtained
Less than default error threshold values, determine in the second row figure cycle of the second place and second row figure slope.
Specifically, after S410 is completed, traction electric machine can draw correction camera and be moved, and be moved to except first
The second place beyond putting, the illustrative distance as apart from display screen in Fig. 1 are at d2.The operation of S410 is repeated, is obtained
Obtain second row figure cycle and second row figure slope.
S430, the actual cycle that optical element is determined according to the first row figure cycle and second row figure cycle and optics member
The distance between part and display screen.
Specifically, determine that the actual cycle of optical element and the distance between optical element and display screen are according to by people
Eye spatial position, the method in the row's of adjusting figure cycle.Wherein, the spatial position of human eye refers to the depth information of human eye.In this implementation
In example, correction the distance between camera and display screen are equivalent to the depth of human eye.It is to become before and after position of human eye shown in Fig. 5
Change the influence schematic diagram to row's figure cycle, position of human eye is made to be screen center's line correspondence A or B point, is regarded centered on wherein B points
Point, the distances of B points to display screen are D, and the distances of A points to display screen is that d, D and d are human eye respectively in B points and A points
Depth.When human eye moves to A points by B points, row changes in the figure cycle, it can be deduced that the cycle that interweaves is related to depth, i.e.,：Wherein, p represents the cycle that interweaves, and l is the optical element cycle, and f is optical element range display distance, and d is
Human eye depth information.When at first position, d values are d1, and the first row figure cycle is p (d1), at the second place, d
Value is d2, and the first row figure cycle is p (d2), is equivalent to and establishes an equation group there are two unknown number, solvable equation
Group obtains the value of l, f, and then the relation of the row's of determining figure cycle and depth, after human eye depth is determined, you can according to
The row of adjustment schemes the cycle to depth accordingly.
S440, determine that the actual slope of optical element is oblique as row's figure according to first row figure slope and second row figure slope
Rate.
Specifically, when carrying out row's figure to 3D rendering, row's figure slope is consistent with row's figure slope of optical element, by
One row's figure slope and second row figure slope carry out that its average is calculated, and are determined as the actual slope of optical element.
S450, closed according to the distance between the actual cycle of optical element, optical element and display screen and human eye depth
System determines row's figure cycle.
Specifically, after the distance between the actual cycle of optical element, optical element and display screen determine, you can really
Fixed row's figure cycle and the relation of depthAfter human eye depth is determined, you can adjusted accordingly according to depth
The entire row figure cycle.Row's figure cycle is different in human eye depth difference.
Further, after the row of correcting schemes cycle and row's figure slope, bore hole 3D display bearing calibration further includes：According to institute
The row of stating schemes cycle, row's figure slope, and row's figure shows each visual point image successively, analyzes and determines central viewpoint offset.Illustratively, may be used
Scheme cycle, row's figure slope completion row's figure to press the row after correction, since correction camera is at central viewpoint, designed for oblique board
The situation of (can show multiple views), shows full white image in each viewpoint successively, remaining viewpoint is put black.It is most bright when putting white
Viewpoint be determined as central viewpoint, and then can determine central viewpoint offset；It is also possible that red indigo plant ingredient respectively accounts in red blueprint
It is central viewpoint offset that viewpoint offset corresponding with red indigo plant junction is found during half.Need exist for explanation is the step
Suddenly the method used is not belonging in the range of the embodiment of the present invention protects, and is not repeated herein.
The technical solution of the present embodiment, by analysis taken at least two positions by certain regularly arranged the
One red blue intersection chart and the second red blue intersection chart emulated according to the design cycle of optical element design slope, determine
The distance of the actual cycle of optical element, slope, optical element apart from display screen, and then the row's of determining figure cycle and depth
Relation can adjust the figure cycle of 3D display intersection chart row according to the variation of human eye depth, solve manual synchronizing effect accordingly
Rate is low, it is of high cost the problem of, improve the accuracy of correction, realize the correction automation of bore hole 3D display.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (5)
1. a kind of bore hole 3D display correcting fixture, which is characterized in that including：
Camera is corrected, schemes cycle and default row's figure period migration according to default row shown by filmed display screen
It measures, the image after default row's figure slope and default row's figure slope deviation amount intertexture；
Slide is arranged at the center origin of display screen and perpendicular to display screen plane, the normal with display screen plane
It is parallel, camera is corrected for placing, correction camera can be slid on slide at different position；
Traction electric machine is arranged on slide, when correction camera needs the different position captured image in slide to determine that row schemes week
During the phase, slided for drawing correction camera in the different position of slide；
Computer for scheming cycle and slope and the red blueprint of offset intertexture according to default row and being shown, receives correction and takes the photograph
As the image that head is shot, and then the image and emulation intersection chart that are shot according to correction camera carry out graphical analysis comparison, determine
Actual cycle offset, actual slope offset and central viewpoint offset.
2. bore hole 3D display correcting fixture according to claim 1, which is characterized in that the optical axis pair of the correction camera
Quasi- display screen center.
3. a kind of bore hole 3D display bearing calibration, which is characterized in that including：
In correction camera at display screen first position, cycle, default row's figure slope are schemed according to default row and preset inclined
Shifting amount completion row's figure is shown and analogue simulation, obtains the first red blue intersection chart and the first analogous diagram, blue intertexture red to described first
Figure carries out Fourier analysis with the first analogous diagram, and according to Fourier analysis result optical component model is carried out approaching calculating,
Obtain updated optical model cycle, slope, iteration simulation process, until emulation and display measures of dispersion are less than default miss
Difference limen value determines the first row figure cycle at the first position and first row figure slope；
In correction camera apart from the display screen second place, cycle, default row's figure slope are schemed according to default row and preset inclined
Shifting amount completion row's figure is shown and analogue simulation, obtains the second red blue intersection chart and the second analogous diagram, blue intertexture red to described second
Figure and Fourier analysis is carried out with the first analogous diagram, and according to Fourier analysis result optical component model is carried out approaching meter
It calculates, obtains updated optical model cycle, slope, iteration simulation process, until emulation with display measures of dispersion less than pre-
If error threshold values, determine in the second row figure cycle of the second place and second row figure slope；
The actual cycle of optical element and optical element and display are determined according to the first row figure cycle and second row figure cycle
The distance between screen；
Determine the actual slope of optical element as row's figure slope according to first row figure slope and second row figure slope；
Determine that row schemes according to the distance between the actual cycle of optical element, optical element and display screen and human eye depth relationship
Cycle.
4. bore hole 3D display bearing calibration according to claim 3, which is characterized in that the method further includes：
Cycle, row's figure slope are schemed according to the row, row's figure shows each visual point image successively, graphical analysis is carried out, by iconic element
Than row, central viewpoint offset is determined.
5. bore hole 3D display bearing calibration according to claim 3, which is characterized in that the row schemes cycle, optical element
The distance between actual cycle, optical element and display screen and human eye depth relationship be：
Wherein, p is row's figure cycle, and d is human eye depth, and the actual cycle of l optical elements, f is optical element
Distance apart from display screen.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109246417A (en) * | 2018-11-27 | 2019-01-18 | 武汉市天蝎科技有限公司 | A kind of machine vision analysis system and method based on bore hole stereoscopic display |
| CN112365547A (en) * | 2020-11-06 | 2021-02-12 | 上海易维视科技有限公司 | Camera correction method and system based on multiple depth grating visual points |
| CN112367515A (en) * | 2020-08-25 | 2021-02-12 | 中山大学 | Visual area correction method and device based on free stereo display |
| CN113689551A (en) * | 2021-08-20 | 2021-11-23 | 纵深视觉科技(南京)有限责任公司 | A method, device, medium and electronic device for displaying three-dimensional content |
| CN114449250A (en) * | 2022-01-30 | 2022-05-06 | 纵深视觉科技(南京)有限责任公司 | Method and device for determining the viewing position of a user relative to a naked-eye 3D display device |
| CN115061606A (en) * | 2022-02-14 | 2022-09-16 | 邹良伍 | A naked eye 3D immersive experience device |
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| CN112365547A (en) * | 2020-11-06 | 2021-02-12 | 上海易维视科技有限公司 | Camera correction method and system based on multiple depth grating visual points |
| CN112365547B (en) * | 2020-11-06 | 2023-08-22 | 上海易维视科技有限公司 | Camera correction method and system based on multi-depth grating visual point |
| CN113689551A (en) * | 2021-08-20 | 2021-11-23 | 纵深视觉科技(南京)有限责任公司 | A method, device, medium and electronic device for displaying three-dimensional content |
| CN114449250A (en) * | 2022-01-30 | 2022-05-06 | 纵深视觉科技(南京)有限责任公司 | Method and device for determining the viewing position of a user relative to a naked-eye 3D display device |
| CN115061606A (en) * | 2022-02-14 | 2022-09-16 | 邹良伍 | A naked eye 3D immersive experience device |
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