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A Fast Automatic Exposure Graphics Generation Method

A technology of automatic exposure and graphics, which is used in the control of exposure, optics, image communication, etc., and can solve the problem of high time complexity of automatic exposure of display panels

Active Publication Date: 2020-06-23
WUHAN JINGLI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application solves the problem of high time complexity of the automatic exposure of the display panel in the prior art by providing a method for generating a fast automatic exposure pattern

Method used

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  • A Fast Automatic Exposure Graphics Generation Method
  • A Fast Automatic Exposure Graphics Generation Method
  • A Fast Automatic Exposure Graphics Generation Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 provides a fast automatic exposure pattern, such as figure 1 As shown, it includes: a graphic area; a first limited area is formed in the graphic area, the first limited area is located at the center of the graphic area, and the resolution of the first limited area is Width*Height.

[0032] Within the graphics area, the area outside the first defined area is defined as an unrestricted area; the unrestricted area is filled with a first contrasting color, and the first contrasting color can be L0, i.e. RGB (0, 0,0).

[0033] A plurality of tiles are formed in the first limited area, each tile has a resolution of M*N, and the plurality of tiles include four feature tiles and at least three grayscale tiles. Wherein, the four characteristic blocks are respectively recorded as a first characteristic block, a second characteristic block, a third characteristic block, and a fourth characteristic block.

[0034] The first feature block includes i identification bl...

Embodiment 2

[0039] Embodiment 2 provides a fast automatic exposure pattern in the case of uneven brightness of the display panel, such as figure 2 As shown, the second limited area is added on the basis of Example 1.

[0040] The second limited area is formed in the graphics area, and the second limited area includes a plurality of sub-blocks, each of which has a resolution of X*Y, and different sub-blocks are filled with different grays. step color.

[0041] The second limited area is suggested to be placed at the edge of the graphic area, which is better applicable to the situation of uneven brightness at the edge of the display panel.

[0042]In embodiment 2, the area within the graphic area and outside the first limited area and the second limited area is defined as an undefined area; the undefined area is filled with a first contrasting color, so The first contrast color can be L0, ie RGB(0,0,0).

[0043] That is, Embodiment 2 designs a pattern image of multiple sub-blocks, which...

Embodiment 3

[0045] Embodiment 3 provides a fast auto-exposure graphic in the case of multi-camera shooting, such as image 3 As shown, there are multiple first limited areas, and each of the first limited areas is used to correspond to a camera.

[0046] That is, if multiple cameras capture the pattern picture of the display panel, the area under each camera needs to make a graphic pattern according to the method of embodiment 1.

[0047] To sum up, embodiment 1 is mostly used when the brightness of the display panel is relatively uniform, embodiment 2 is mostly used when the brightness of the edge of the display panel is uneven, and embodiment 3 is used for multi-camera shooting.

[0048] The contrast effect of image brightness before camera exposure, iterative automatic exposure, and fast automatic exposure, as shown in Table 1:

[0049] Table 1 Comparison of automatic exposure effects of different methods

[0050]

[0051] Iterative camera auto-exposure and fast auto-exposure time...

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Abstract

The invention belongs to the technical field of display panel defect detection, and discloses a fast automatic exposure pattern and a generation method thereof. A first limited area is taken in the graphic area, a plurality of blocks are taken in the first limited area, and a plurality of blocks are taken in the plurality of blocks. Take out four feature blocks and at least three gray-scale blocks, and fill different feature blocks with different feature colors. Different gray-scale blocks are filled with different gray-scale colors. Among the three feature blocks, take For different numbers of identification blocks, the identification blocks are filled with the identification color, and the unrestricted area is filled with the first contrasting color. The present invention solves the problem of high time complexity in the automatic exposure of the display panel in the prior art. The present invention can predict the camera exposure parameters of all the images to be detected through a graph, and can achieve the effect of automatic exposure at one time. The calculation speed is fast, It has strong real-time performance and can reduce time complexity.

Description

technical field [0001] The invention relates to the technical field of display panel defect detection, in particular to a method for generating fast automatic exposure patterns. Background technique [0002] For the display panel visual inspection system, the high-quality image of the panel is the basis for subsequent image processing and defect analysis, which is directly related to the measurement accuracy of the entire system, and in the case of a certain imaging device, exposure is one of the key factors affecting the imaging quality First, it is necessary to calculate the exposure parameters of the camera for different images to be detected in real time, so as to improve the image quality. [0003] In the existing automatic exposure technology for visual inspection of display panels, industrial cameras only use multiple iterative exposure approximation strategies for one image to be inspected each time to achieve automatic exposure control, and then perform automatic ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/202G03B7/00
CPCH04N5/202G03B7/00H04N23/73
Inventor 余梦露花华妹张胜森郑增强
Owner WUHAN JINGLI ELECTRONICS TECH
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