CN109658320A - A kind of abnormity display screen sub-pixel luminance acquisition method - Google Patents
A kind of abnormity display screen sub-pixel luminance acquisition method Download PDFInfo
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- CN109658320A CN109658320A CN201811305868.7A CN201811305868A CN109658320A CN 109658320 A CN109658320 A CN 109658320A CN 201811305868 A CN201811305868 A CN 201811305868A CN 109658320 A CN109658320 A CN 109658320A
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- G—PHYSICS
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0007—Image acquisition
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The present invention discloses a kind of special-shaped display screen sub-pixel luminance acquisition method, carries out automatic collection to the image shown in OLED screen using camera, obtains image data, image data includes several pixel groups；All gray values in described image data are extracted, all gray values are compared with the gray threshold, and the gray value that will be less than gray threshold carries out zero setting processing；Search the two-dimensional coordinate of maximum gradation value point in each pixel group in image data；The difference of the two-dimensional coordinate of maximum gradation value point in adjacent pixel group is calculated, and finds out one group of highest difference of the frequency of occurrences in all differences；Calculate the minimum circumscribed rectangle of maximum gradation value point in each pixel group；The direction vector of two-dimensional coordinate in respective pixel group is calculated by minimum circumscribed rectangle；The pixel of maximum gradation value point can be fully found along a direction finding first row in image data；On the basis of first row, along all pixels point of its two sides direction finding image data.
Description
Technical field
The invention belongs to photoelectric fields, and in particular to a kind of acquisition method of display screen more particularly to a kind of abnormity display
Shield sub-pixel luminance acquisition method.
Background technique
Screen comprehensively can be divided into abnormity screen and non-profiled screen, wherein abnormity screen is then cut away on the basis of non-profiled screen
Point, for placing the components such as camera, earpiece, currently, abnormity screen has become one important new trend of OLED screen.
But due to the particularity of abnormity screen, lead to its not only processing difficulties, higher cost, but also to panel screen
The positioning and detection of Mura equipment bring great challenge.
Again due to the manufacture craft of current AMOLED mould group be not still it is very perfect, the OLED screen produced has considerable
A part display is imperfect, and in order to increase output capacity, manufacturer needs to carry out Mura algorithm compensation to OLED screen.And abnormity screen
Mura algorithm compensation is even more extremely urgent, and thus the sampled grey of abnormity screen sub-pixel is also at the most important thing.
In consideration of it, in order to solve this problem, propose that a kind of special-shaped display screen sub-pixel luminance acquisition method is the present invention
The project to be studied.
Summary of the invention
The present invention provides a kind of special-shaped display screen sub-pixel luminance acquisition method, its purpose is to solve the prior art without
Method guarantees the problem of acquisition qualification abnormity screen image.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of abnormity display screen sub-pixel luminance acquisition side
Method builds an Image-capturing platform in advance, and the Image-capturing platform is mainly by host computer, signal generator, OLED screen and phase
Machine composition；
The host computer is connect with signal generator, camera respectively；The output end of the signal generator connects the defeated of OLED screen
Enter end；A gray threshold is previously stored on the host computer；
And it operates according to the following steps:
S1: automatic collection is carried out to the image shown in the OLED screen using camera, obtains image data, wherein the figure
As data include several pixel groups；
S2: extracting all gray values in described image data, all gray values be compared with the gray threshold, and will
Gray value lower than the gray threshold carries out zero setting processing；
S3: the two-dimensional coordinate (Xi, Yj) of maximum gradation value point in each pixel group in image data is searched；
S4: the difference (Δ X, Δ Y) of the two-dimensional coordinate of maximum gradation value point in adjacent pixel group is calculated, and in all difference (Δs
X, Δ Y) in find out one group of highest difference of the frequency of occurrences (Δ Xm, Δ Yn), the highest difference of the frequency of occurrences (Δ Xm, Δ Yn)
Distance value as closest to neighbor pixel in OLED screen on camera；
S5: the minimum circumscribed rectangle of maximum gradation value point in each pixel group is calculated；
S6: the direction vector of two-dimensional coordinate (Xi, Yj) in respective pixel group is calculated by minimum circumscribed rectangle；
S7: the pixel of maximum gradation value point can be fully found along a direction finding first row in described image data；
S8: on the basis of first row, along all pixels point of its two sides direction finding image data；
Wherein, the S5 and S6 sequence in no particular order.
Related content in above-mentioned technical proposal is explained as follows:
1, in above scheme, image pick-up card is installed in the host computer.
2, in above scheme, the automatic collection the following steps are included:
S11: powering on, and guarantees that each equipment works normally in Image-capturing platform；
S12: being arranged Image Acquisition list in the host computer, which includes to need the OLED screen that acquires at least
One group of setting image information and corresponding at least one set of setting shooting condition；The setting image information and setting shooting condition exist
It is preset before camera acquisition；
S13: camera is aligned, and guarantees that OLED screen is located in the visual field of camera, and OLED screen and camera is made to keep a spacing；
S14: host computer sends the order shot to OLED screen to camera；
S15: when camera receive shooting order after, according to setting image information preset in described image acquisition list with
Setting shooting condition shoots OLED screen, and the actual image information for taking OLED screen is accordingly input to image and is adopted
Collect in list.
3, in above scheme, described image information includes the color value and grayscale value of image, and the shooting condition includes exposing
Between light time and yield value.
4, in above scheme, the camera uses CCD camera, and the resolution ratio of the CCD camera is greater than or equal to 6576*4384
Pixel.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
Present invention good reliability compared with the prior art can be shot using high-resolution camera, can effectively be collected
Qualified abnormity screen image, guarantees the acquisition quality of image.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the present embodiment abnormity display screen sub-pixel luminance acquisition platform；
Attached drawing 2 is the work flow diagram of the present embodiment abnormity display screen sub-pixel luminance acquisition platform；
The work flow diagram of hardware operation step when attached drawing 3 is the automatic collection in the present embodiment.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
A kind of embodiment: test macro for supporting OLED screen multiple-working mode
Referring to attached drawing 1, build an Image-capturing platform in advance, the Image-capturing platform mainly by host computer, signal generator,
OLED screen and camera composition.Wherein, the camera uses CCD high resolution camera.
The host computer is connect with signal generator, camera respectively；The output end of the signal generator connects OLED screen
Input terminal, realize host computer freely control what OLED screen was shown；A gray threshold is previously stored on the host computer.
It is operated referring to attached drawing 2, and according to the following steps:
S1: automatic collection is carried out to the image shown in the OLED screen using camera, obtains image data, wherein the figure
As data include several pixel groups.
Wherein, referring to attached drawing 3, the automatic collection the following steps are included:
S21: powering on, and guarantees that each equipment works normally in Image-capturing platform.
S22: being arranged Image Acquisition list in the host computer, which includes the OLED screen for needing to acquire
At least one set setting image information and corresponding at least one set of setting shooting condition；The setting image information and setting shooting item
Part is preset before camera acquisition.
S23: camera is aligned, and guarantees that OLED screen is located in the visual field of camera, between the two apart from moderate, make OLED screen and
Camera keeps a spacing.
S24: host computer sends the order shot to OLED screen to camera, and camera focuses automatically.
S25: after camera receives shooting order, believed according to setting image preset in described image acquisition list
Breath and setting shooting condition shoot OLED screen, can will take according to acquisition list automatic collection image with that
The actual image information of OLED screen is accordingly input in Image Acquisition list, and is chosen suitable image and position and will determine
Graphical output.
Then, the image of a grayscale is chosen for each color for positioning:
S2: extracting all gray values in described image data, all gray values be compared with the gray threshold, and will
Gray value lower than the gray threshold carries out zero setting processing.
S3: the two-dimensional coordinate (Xi, Yj) of maximum gradation value point in each pixel group in image data is searched.
S4: the difference (Δ X, Δ Y) of the two-dimensional coordinate of maximum gradation value point in adjacent pixel group is calculated, and in all differences
One group of highest difference of the frequency of occurrences (Δ Xm, Δ Yn), the frequency of occurrences highest difference (Δ Xm, Δ are found out in (Δ X, Δ Y)
Yn) the distance value as closest to neighbor pixel in OLED screen on camera.
S5: the minimum circumscribed rectangle of maximum gradation value point in each pixel group is calculated.
S6: the direction vector of two-dimensional coordinate (Xi, Yj) in respective pixel group is calculated by minimum circumscribed rectangle.
S7: the pixel of maximum gradation value point can be fully found along a direction finding first row in described image data
Point.
S8: on the basis of first row, along the position of all pixels point of its two sides direction finding image data.
To carry out sampled grey to each pixel, wherein the S5 and S6 sequence in no particular order, can first calculate most
Small external matrix, then direction vector is calculated, direction vector can also be first calculated, then calculate minimum external matrix, one of them is wanted
It is calculated on the basis of another one.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of abnormity display screen sub-pixel luminance acquisition method, it is characterised in that: build an Image-capturing platform in advance, the figure
As acquisition platform is mainly made of host computer, signal generator, OLED screen and camera；
The host computer is connect with signal generator, camera respectively；The output end of the signal generator connects the defeated of OLED screen
Enter end；A gray threshold is previously stored on the host computer；
And it operates according to the following steps:
S1: automatic collection is carried out to the image shown in the OLED screen using camera, obtains image data, wherein the figure
As data include several pixel groups；
S2: extracting all gray values in described image data, all gray values be compared with the gray threshold, and will
Gray value lower than the gray threshold carries out zero setting processing；
S3: the two-dimensional coordinate (Xi, Yj) of maximum gradation value point in each pixel group in image data is searched；
S4: the difference (Δ X, Δ Y) of the two-dimensional coordinate of maximum gradation value point in adjacent pixel group is calculated, and in all difference (Δs
X, Δ Y) in find out the highest difference of a frequency of occurrences (Δ Xm, Δ Yn), the highest difference of the frequency of occurrences (Δ Xm, Δ Yn) is i.e.
For the distance value closest to neighbor pixel in OLED screen on camera；
S5: the minimum circumscribed rectangle of maximum gradation value point in each pixel group is calculated；
S6: the direction vector of two-dimensional coordinate (Xi, Yj) in respective pixel group is calculated by minimum circumscribed rectangle；
S7: the pixel of maximum gradation value point can be fully found along a direction finding first row in described image data；
S8: on the basis of first row, along all pixels point of its two sides direction finding image data.
2. abnormity display screen sub-pixel luminance acquisition method according to claim 1, it is characterised in that: in the host computer
Image pick-up card is installed.
3. abnormity display screen sub-pixel luminance acquisition method according to claim 1 or 2, it is characterised in that: described automatic
Acquisition the following steps are included:
S11: powering on, and guarantees that each equipment works normally in Image-capturing platform；
S12: being arranged Image Acquisition list in the host computer, which includes to need the OLED screen that acquires at least
One group of setting image information and corresponding at least one set of setting shooting condition；The setting image information and setting shooting condition exist
It is preset before camera acquisition；
S13: camera is aligned, and guarantees that OLED screen is located in the visual field of camera, and OLED screen and camera is made to keep a spacing；
S14: host computer sends the order shot to OLED screen to camera；
S15: when camera receive shooting order after, according to setting image information preset in described image acquisition list with
Setting shooting condition shoots OLED screen, and the actual image information for taking OLED screen is accordingly input to image and is adopted
Collect in list.
4. abnormity display screen sub-pixel luminance acquisition method according to claim 3, it is characterised in that: described image information
Color value and grayscale value including image, the shooting condition include time for exposure and yield value.
5. abnormity display screen sub-pixel luminance acquisition method according to claim 1, it is characterised in that: the camera uses
The resolution ratio of CCD camera, the CCD camera is greater than or equal to 6576*4384 pixel.
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| CN111081149A (en) * | 2019-12-26 | 2020-04-28 | Tcl华星光电技术有限公司 | Display method and display device |
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| CN115953981A (en) * | 2023-02-28 | 2023-04-11 | 长春希达电子技术有限公司 | Method for positioning special-shaped plane screen lamp points and method for acquiring brightness information |
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| CN115953981A (en) * | 2023-02-28 | 2023-04-11 | 长春希达电子技术有限公司 | Method for positioning special-shaped plane screen lamp points and method for acquiring brightness information |
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| CN109658320B (en) | 2023-04-07 |
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