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Texture surface defect detection method and system based on abnormal synthesis and decomposition

A defect detection and textured surface technology, applied in the field of image processing, can solve problems such as inapplicable, difficult to solve, and inability to detect low contrast, so as to improve the reconstruction accuracy, improve the defect detection accuracy, and improve the defect detection rate.

Active Publication Date: 2021-04-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Existing methods can only be adapted to one or several types of textures (for example, they can only detect display devices, but cannot be applied to wood surfaces), and can only detect fixed types of texture defects (for example, they can only detect high-contrast defects, but cannot detect low-contrast defects. defects), it is difficult to solve all cases

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  • Texture surface defect detection method and system based on abnormal synthesis and decomposition
  • Texture surface defect detection method and system based on abnormal synthesis and decomposition
  • Texture surface defect detection method and system based on abnormal synthesis and decomposition

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] Abnormal Negative Image I n Decomposable for flawless textured background I p with exception image I a The assumptions are expressed as follows:

[0036] I n (x,y)=I b (x,y)·I p (x,y)+I a (x,y)·I f (x,y) (0-1)

[0037] Among them, I n , I p , I b , I a , I f ∈ R W×H×1 , W, H represent image width and height respectively, both are 256 pixels in this study, x=1,...,W, y=1,...,H...

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Abstract

The invention discloses a texture surface defect detection method and system based on abnormal synthesis and decomposition, and belongs to the field of image processing. According to the method, a segmentation-guided defect generation network is constructed, a large number of defect samples similar to real defects can be generated by using a small number of real defect training samples, and meanwhile, an anomaly synthesis method based on Gaussian sampling is provided, and anomaly negative samples can be randomly synthesized by using defect-free positive samples, so that the problem of small quantity of defect samples in industry can be solved; the defect detection precision is further improved; according to the method and system, the abnormal negative sample is decomposed into the texture background image and the abnormal mask image by adopting the abnormal decomposition network, so that defects can be effectively prevented from being reconstructed into the texture background, the texture background reconstruction precision is improved, the defect area can be accurately segmented, and the residual image and the abnormal segmentation image are fused; therefore, the defect detection rate is improved, and the defect over-detection rate is reduced.

Description

technical field [0001] The invention belongs to the field of image processing, and more specifically relates to a texture surface defect detection method and system based on abnormal synthesis and decomposition. Background technique [0002] In the field of industrial manufacturing, the quality of raw materials for various industrial products is different, and the manufacturing process is complicated. Various surface defects are unavoidable on the surface of products, such as textiles, new display devices, ceramics, steel, etc. Surface defects refer to localized areas that differ from the surrounding texture and pattern, or that have irregular brightness variations. Since the surface of various products often presents different texture features, these texture surface defects will directly reduce product quality and affect user experience. To improve production quality, all types of surface defects should be strictly controlled during the manufacturing process. The texture...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/11G06K9/62G06N3/04G06N3/08
CPCG06T7/0004G06T7/11G06N3/088G06T2207/20081G06T2207/30108G06N3/045G06F18/2132Y02P90/30
Inventor 杨华宋开友尹周平侯岳
Owner HUAZHONG UNIV OF SCI & TECH
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