Cloth defect detection system and method

By combining the alternating illumination of a line scan camera with ordinary light sources and a structured light generation unit, and combining two-dimensional and three-dimensional defect detection models, the problem that traditional systems have difficulty in identifying three-dimensional defects is solved, and efficient and low-cost cloth defect detection is achieved.

CN120761379AActive Publication Date: 2025-10-10CHINA TELECOM ARTIFICIAL INTELLIGENCE TECHNOLOGY (BEIJING) CO LTD
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Patent Information

Application Number
CN202510840054.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-20
Publication Date
2025-10-10
Estimated Expiration
2045-06-20

AI Technical Summary

Technical Problem

Existing cloth defect detection systems have difficulty accurately identifying three-dimensional defects such as ridges and dents, and traditional structured light detection methods are expensive and difficult to apply to production lines with high-frequency image acquisition.

Method used

A line scan camera combined with a normal light source and a structured light generation unit is used to alternately illuminate the fabric. Pre-trained two-dimensional and three-dimensional defect detection models are used to analyze images under normal light and structured light respectively. Combined with complementary labeled training samples, the three-dimensional defect recognition capability is improved.

Benefits of technology

It achieves accurate identification of two-dimensional and three-dimensional defects on the surface of cloth at high production rates, reduces hardware costs and improves the applicability and accuracy of the detection system.

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Abstract

The invention discloses a cloth defect detection system and method. The system comprises a cloth inspecting machine, a line scanning camera, a light source, a structured light generating unit and a detecting unit. The cloth inspecting machine controls cloth to move at a preset speed, the structured light generating unit and the common light source work alternately, and under the control of the control unit, the line scanning camera synchronously collects a cloth image as a first image. The first image is recombined into two types of images under common light and structured light through the detection unit, the two types of images are respectively input into pre-trained two-dimensional and three-dimensional flaw detection models to obtain corresponding first and second detection results, and the detection unit judges the flaw state of the to-be-detected cloth based on the first and second detection results. According to the invention, the technical problem that three-dimensional flaws such as bulges and recesses are difficult to identify in a traditional scheme for identifying the flaws of the cloth based on a two-dimensional image is solved.
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