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Mura detection method and device, computer readable storage medium and terminal

A detection method and computer program technology, applied in the field of image processing, can solve problems such as misinterpretation, and achieve the effect of avoiding interference and improving accuracy

Pending Publication Date: 2021-12-24
全芯智造技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned method of digital camera combined with image recognition software for Mura detection will be affected by moiré, resulting in inaccurate interpretation

Method used

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  • Mura detection method and device, computer readable storage medium and terminal
  • Mura detection method and device, computer readable storage medium and terminal
  • Mura detection method and device, computer readable storage medium and terminal

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Embodiment Construction

[0025] As mentioned in the background art, the above-mentioned digital camera combined with image recognition software for Mura detection will be affected by moiré, resulting in inaccurate interpretation.

[0026] Moiré is a kind of high-frequency interference fringes produced by photosensitive elements on digital cameras and other equipment, which will cause colored high-frequency irregular fringes to appear in the image. Moiré patterns are irregular and have no fixed shape or pattern. When the spatial frequency of the photosensitive element and the fringes in the image are similar, a wavy interference pattern may be formed, the so-called moiré.

[0027] When shooting images, the following methods are usually used to reduce or eliminate moiré: 1. Change the lens angle; 2. Change the camera position; 3. Change the focus; 4. Change the focal length of the lens; 5. Use the front filter mirror. However, when these methods are used on Mura recognition devices, there will be limi...

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PUM

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Abstract

The invention discloses a Mura detection method and device, a computer readable storage medium and a terminal. The Mura detection method comprises the following steps: acquiring an image of a display screen to be detected; converting the image into a frequency domain image; filtering the frequency domain image according to the frequency range of the frequency domain image so as to remove moire patterns in the image; and detecting the Mura in the image after the moire is removed. According to the technical scheme, the accuracy of Mura detection can be realized.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a Mura detection method and device, a computer-readable storage medium, and a terminal. Background technique [0002] With the development of the display technology, the application of the display panel is becoming more and more extensive, and correspondingly, the requirements for the display panel are also getting higher and higher. [0003] Display unevenness (Mura) refers to various inconsistencies or flaws in various shapes caused by uneven brightness or color on the display. Although it will not affect the function of the display screen, a display screen with Mura cannot be accepted by consumers and can only be sold at a low price as a substandard product or even scrapped. All display manufacturers are committed to eliminating the occurrence of mura, and picking out defective products with mura before the products leave the factory. [0004] Most manufactu...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T5/10G06T5/20
CPCG06T7/0006G06T7/11G06T7/136G06T5/10G06T5/20G06T2207/20056G06T2207/20052G06T2207/30121
Inventor 不公告发明人
Owner 全芯智造技术有限公司
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