CN103105146B - For the planarization detection method of the Lenticular screen of 3-D display - Google Patents
For the planarization detection method of the Lenticular screen of 3-D display Download PDFInfo
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- CN103105146B CN103105146B CN201310021670.7A CN201310021670A CN103105146B CN 103105146 B CN103105146 B CN 103105146B CN 201310021670 A CN201310021670 A CN 201310021670A CN 103105146 B CN103105146 B CN 103105146B
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Abstract
The present invention relates to planarization detection field, especially a kind of planarization detection method of the Lenticular screen for 3-D display, is characterized in that, comprise the following steps: S1: provide a post lenticular display in order to show a test pattern; S2: at viewing ratio a pair of CCD described test pattern taken and obtain an a left detection figure and right detection figure respectively; S3: graphical analysis is carried out to described left detection figure; S4: graphical analysis is carried out to described right detection figure; S5: obtain the crossfire value of left detection figure and the crossfire value of right detection figure respectively according to crosstalk coefficient; S6: the planarization index calculating post lens.Method of the present invention is simple to operate and can accurately provide the Judging index of the degree of crook of post lens, and coupled columns lens take smooth measure to provide effective reference, also have certain directive significance to the performance of lifting column lenticulation three-dimensional display.
Description
Technical field
The present invention relates to planarization detection field, especially a kind of planarization detection method of the Lenticular screen for 3-D display.
Background technology
3-D display (Three-dimensional Display, 3D) become sciemtifec and technical sphere noticeable now, the Lenticular screen 3D display technique wherein based on parallax illumination technology becomes present stage study hotspot because not needing to wear the auxiliary devices such as such as anaglyph spectacles.Lenticular screen formula 3D display is coupled to form by Lenticular screen and 2D display precision, wherein, Lenticular screen is the travel path of directed change transmitted light as beam splitter object, makes the right and left eyes of beholder watch different anaglyphs, thus produces stereoeffect.
Current Lenticular screen material (mainly concentrating as pet sheet material and pet film material) on the market, very easily causes flexural deformation in production and transportation.Ideally, because the level of Lenticular screen divides light action, eyes are it is seen that the rectangle plane image of adjacent isolated area, if but the surface irregularity of post lens, light splitting distortion will be caused, make the interregional image section of 3 D visible overlapping, increase the crosstalk of stereo-picture, reduce viewing comfort level.Therefore, in order to improve stereo display effect, can do certain smooth process to Lenticular screen, corresponding flatness detection mode is then essential.
We have studied the impact of the planarization stereoscopic image crosstalk of post lens for this reason, utilize image processing method, calculate the area in the crosstalk stereo-picture region that eyes are seen, and then draw the roughness index of post lens.This index directly reacts the degree of crosstalk of stereo-picture, and the correction process for the later stage provides effective basis for estimation.
Summary of the invention
In view of this, the object of this invention is to provide a kind of planarization detection method of the Lenticular screen for 3-D display.
The present invention adopts following scheme to realize: a kind of planarization detection method of the Lenticular screen for 3-D display, is characterized in that, comprise the following steps:
S1: provide a post lenticular display in order to show a test pattern;
S2: at viewing ratio a pair of CCD described test pattern taken and obtain an a left detection figure and right detection figure respectively;
S3: graphical analysis is carried out to described left detection figure; According to color and the gray shade scale difference of zones of different in described left detection figure, whole left detection diagram root is become several different vision areas, simultaneously, distinguish the available field of visual of described left detection figure and crosstalk vision area and label is carried out to each vision area, and obtaining the area of each vision area in described left detection figure and the area of total vision area;
S4: graphical analysis is carried out to described right detection figure; According to color and the gray shade scale difference of zones of different in described right detection figure, whole right detection diagram root is become several different vision areas, simultaneously, distinguish the available field of visual of described right detection figure and crosstalk vision area and label is carried out to each vision area, and obtaining the area of each vision area in described right detection figure and the area of total vision area;
S5: obtain the crossfire value of left detection figure and the crossfire value of right detection figure respectively according to crosstalk coefficient, meanwhile, obtains the available field of visual ratio of left detection figure and the available field of visual ratio of right detection figure;
S6: the planarization index calculating post lens.
In an embodiment of the present invention, described step S3 is specially:
S31: the gray-scale value of described left detection being schemed to each pixel RGB component is analyzed, using the viewpoint color of component larger for gray-scale value as this pixel, divides available field of visual and crosstalk vision area with this;
S32: the area calculating each vision area
and the area of total vision area
, wherein l represents that left detection figure, n represent the numbering of vision area, and n ∈ (-N, N), N are positive integer, as n=0, is available field of visual, is crosstalk vision area during n ≠ 0.
In an embodiment of the present invention, described step S4 is specially:
S41: the gray-scale value of described right detection being schemed to each pixel RGB component is analyzed, using the viewpoint color of component larger for gray-scale value as this pixel, divides available field of visual and crosstalk vision area with this;
S42: the area calculating each vision area
and the area of total vision area
, wherein r represents that right detection figure, m represent the numbering of vision area, and m ∈ (-N, N), N are positive integer, as m=0, is available field of visual, is crosstalk vision area during m ≠ 0.
In an embodiment of the present invention, described step S5 is specially:
S51: determine crosstalk coefficient k, crosstalk coefficient k represents the degree of crook of crosstalk vision area;
S52: according to formula
calculate the crossfire value of left detection figure; According to formula
calculate the crossfire value of right detection figure;
S53: according to formula
calculate the available field of visual ratio of left detection figure; According to formula
calculate the available field of visual ratio of right detection figure.
In an embodiment of the present invention, described step S6 is specially: according to out-of-flatness crossfire value formula
calculate out-of-flatness crossfire value A, namely draw the planarization index of post lens.
In an embodiment of the present invention, described in draw the planarization index of post lens after, draw the 3 dimensional drawing of post lens surface planarization according to this roughness index by matlab emulation.
In an embodiment of the present invention, described viewing ratio is determined by the parameter of described post lenticular display.
The present invention proposes a kind of detection method of Lenticular screen flatness.For at present on the market Lenticular screen material easily there is bending thus affect the problem of stereo display effect, provide a kind of method than naked-eye observation test column lens planarization more accurately, propose the computing formula of post lens flatness.Method of the present invention is simple to operate and can accurately provide the Judging index of the degree of crook of post lens, and coupled columns lens take smooth measure to provide effective reference, also have certain directive significance to the performance of lifting column lenticulation three-dimensional display.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention uses two CCD shooting.
Fig. 2 is the continuous viewpoint view that the present invention is observed by left CCD.
Fig. 3 is the continuous viewpoint view that the present invention is observed by right CCD.
Fig. 4 is the continuous viewpoint view center pillar lens surface degree of crook schematic diagram that the present invention is observed by left CCD.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below by specific embodiment and relevant drawings, the present invention will be described in further detail.
The invention provides a kind of planarization detection method of the Lenticular screen for 3-D display, it is characterized in that, comprise the following steps:
S1: provide a post lenticular display in order to show a test pattern;
S2: at viewing ratio a pair of CCD described test pattern taken and obtain an a left detection figure and right detection figure respectively;
S3: graphical analysis is carried out to described left detection figure; According to color and the gray shade scale difference of zones of different in described left detection figure, whole left detection diagram root is become several different vision areas, simultaneously, distinguish the available field of visual of described left detection figure and crosstalk vision area and label is carried out to each vision area, and obtaining the area of each vision area in described left detection figure and the area of total vision area;
S4: graphical analysis is carried out to described right detection figure; According to color and the gray shade scale difference of zones of different in described right detection figure, whole right detection diagram root is become several different vision areas, simultaneously, distinguish the available field of visual of described right detection figure and crosstalk vision area and label is carried out to each vision area, and obtaining the area of each vision area in described right detection figure and the area of total vision area;
S5: obtain the crossfire value of left detection figure and the crossfire value of right detection figure respectively according to crosstalk coefficient, meanwhile, obtains the available field of visual ratio of left detection figure and the available field of visual ratio of right detection figure;
S6: the planarization index calculating post lens.
In a preferred embodiment of the present invention, post lenticular display adopts the three-dimensional display of 8 viewpoints, gets the complete red image of 3 width, the complete green image of 3 width, the full blue images of 2 width totally 8 RGB images, according to red, green, blue, and red, green, blue, red, green order compound stereoscopic disparity map.As shown in Figure 1, use a post lenticular display with n viewpoint to show a test pattern, we choose monochrome image that RGB replaces successively as test pattern, and often open the achromatic sheet that figure is gray-scale value 255, arrangement mode is RGBRGBRG.
With the test pattern that two CCD shows in viewing ratio and optimal viewing angle shooting, described viewing ratio and optimal viewing angle are determined by the parameter of described post lenticular display, if that now left CCD shooting is the full red-out figure of viewpoint 4, so now right CCD shooting be the full Cyanopia figure of viewpoint 3.As shown in Figures 2 and 3, Fig. 2 is the continuous viewpoint view observed by left CCD, and Fig. 3 is the continuous viewpoint view observed by right CCD.
Described step S3 is specially:
S31: the gray-scale value of described left detection being schemed to each pixel RGB component is analyzed, using the viewpoint color of component larger for gray-scale value as this pixel, divides available field of visual and crosstalk vision area with this; Determine that the color of each irregular vision area also determines the viewpoint belonging to this vision area simultaneously;
S32: the area calculating each vision area
and the area of total vision area
, wherein l represents that left detection figure, n represent the numbering of vision area, and n ∈ (-N, N), N are positive integer, as n=0, is available field of visual, is crosstalk vision area during n ≠ 0.
As shown in Figure 4, rectangular area is the whole view pictures that left CCD photographs, and n represents the numbering of vision area, increases progressively arrangement from left to right; Curve is the separatrix between vision area, is the vision area border flexural deformation caused by the out-of-flatness of Lenticular screen; Curve both sides are the vision area of different colours, and its quantity can the smooth degree of direct reaction column lens, and the crosstalk in curve more multilist photopic vision interval is more serious.We call primary vision area vision area maximum for area in display frame, and also referred to as available field of visual, other vision areas are all the crosstalk vision areas produced by post lens injustice.Upper as can be seen from figure | the vision area distance primary vision area that n| is larger is far away, and corresponding bending degree is higher.Such as, in figure vision area S
lfor available field of visual, S
l+1, S
l+2, S
l+3the next crosstalk vision area occurred successively for the increase along with degree of crook.
Described step S4 is specially:
S41: the gray-scale value of described right detection being schemed to each pixel RGB component is analyzed, using the viewpoint color of component larger for gray-scale value as this pixel, divides available field of visual and crosstalk vision area with this;
S42: the area calculating each vision area
and the area of total vision area
, wherein r represents that right detection figure, m represent the numbering of vision area, and m ∈ (-N, N), N are positive integer, as m=0, is available field of visual, is crosstalk vision area during m ≠ 0.
Described step S5 is specially:
S51: determine crosstalk coefficient k, crosstalk coefficient k represents the degree of crook of crosstalk vision area;
Uneven due to the degree of crook of whole post lens plane, the vision area degree of crook the closer to image border is higher, so we utilize crosstalk coefficient k thisly to increase and the degree of crook of change along with distance to characterize.By analyzing, from primary vision area more away from the crosstalk coefficient k of crosstalk zone can corresponding increase, k=|n|, n are that vision area is numbered.。
S52: according to formula
calculate the crossfire value of left detection figure; According to formula
calculate the crossfire value of right detection figure;
S53: according to formula
calculate the available field of visual ratio of left detection figure; According to formula
calculate the available field of visual ratio of right detection figure.
Described step S6 is specially: according to out-of-flatness crossfire value formula
calculate out-of-flatness crossfire value A, namely draw the planarization index of post lens.After drawing the planarization index of post lens, drawn the 3 dimensional drawing of post lens surface planarization by matlab emulation according to this roughness index.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1., for a planarization detection method for the Lenticular screen of 3-D display, it is characterized in that, comprise the following steps:
S1: provide a post lenticular display in order to show a test pattern;
S2: at viewing ratio a pair of CCD described test pattern taken and obtain an a left detection figure and right detection figure respectively;
S3: graphical analysis is carried out to described left detection figure; According to color and the gray shade scale difference of zones of different in described left detection figure, whole left detection diagram root is become several different vision areas, simultaneously, distinguish the available field of visual of described left detection figure and crosstalk vision area and label is carried out to each vision area, and obtaining the area of each vision area in described left detection figure and the area of total vision area;
S4: graphical analysis is carried out to described right detection figure; According to color and the gray shade scale difference of zones of different in described right detection figure, whole right detection diagram root is become several different vision areas, simultaneously, distinguish the available field of visual of described right detection figure and crosstalk vision area and label is carried out to each vision area, and obtaining the area of each vision area in described right detection figure and the area of total vision area;
S5: obtain the crossfire value of left detection figure and the crossfire value of right detection figure respectively according to crosstalk coefficient, meanwhile, obtains the available field of visual ratio of left detection figure and the available field of visual ratio of right detection figure;
S6: the planarization index calculating post lens;
Described step S3 is specially:
S31: the gray-scale value of described left detection being schemed to each pixel RGB component is analyzed, using the viewpoint color of component larger for gray-scale value as this pixel, divides available field of visual and crosstalk vision area with this;
S32: the area S calculating each vision area
l+nand the area S of total vision area
l is total, wherein l represents that left detection figure, n represent the numbering of vision area, and n ∈ (-N, N), N are positive integer, as n=0, is available field of visual, is crosstalk vision area during n ≠ 0;
Described step S4 is specially:
S41: the gray-scale value of described right detection being schemed to each pixel RGB component is analyzed, using the viewpoint color of component larger for gray-scale value as this pixel, divides available field of visual and crosstalk vision area with this;
S42: the area S calculating each vision area
r+mand the area S of total vision area
r is total, wherein r represents that right detection figure, m represent the numbering of vision area, and m ∈ (-N, N), N are positive integer, as m=0, is available field of visual, is crosstalk vision area during m ≠ 0;
Described step S5 is specially:
S51: determine crosstalk coefficient k, crosstalk coefficient k represents the degree of crook of crosstalk vision area;
S52: according to formula
calculate the crossfire value of left detection figure; According to formula
calculate the crossfire value of right detection figure;
S53: according to formula
calculate the available field of visual ratio of left detection figure; According to formula
calculate the available field of visual ratio of right detection figure.
2. the planarization detection method of the Lenticular screen for 3-D display according to claim 1, is characterized in that: described step S6 is specially: according to out-of-flatness crossfire value formula
calculate out-of-flatness crossfire value A, namely draw the planarization index of post lens.
3. the planarization detection method of the Lenticular screen for 3-D display according to claim 2, it is characterized in that: described in draw the planarization index of post lens after, draw the 3 dimensional drawing of post lens surface planarization according to this roughness index by matlab emulation.
4. the planarization detection method of the Lenticular screen for 3-D display according to claim 1, is characterized in that: described viewing ratio is determined by the parameter of described post lenticular display.
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| CN105933697B (en) * | 2016-06-30 | 2017-10-27 | 北京邮电大学 | A kind of method and device of grating parameter output |
| CN109791748B (en) * | 2016-09-28 | 2021-01-08 | 富士胶片株式会社 | Raster display body, method for forming raster image, method for manufacturing raster display body, and storage medium |
| CN107888906A (en) * | 2017-11-23 | 2018-04-06 | 张家港康得新光电材料有限公司 | The detecting system of crosstalk, the detection method of crosstalk, storage medium and processor |
| CN112543318B (en) * | 2020-12-01 | 2023-02-17 | 深圳英伦科技股份有限公司 | 3D display screen compensation method, system and computer readable storage medium |
| US20240121369A1 (en) * | 2021-05-28 | 2024-04-11 | Boe Technology Group Co., Ltd. | Screen detection method, apparatus and device, computer program and readable medium |
| CN113916907B (en) * | 2021-12-13 | 2022-02-18 | 成都工业学院 | Grating stereograph printing quality detection method |
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