Method and system for detecting surface defects of wood based on image generation

By constructing a reference texture representation and reorganizing the pixel arrangement relationship, the problem of lacking a stable reference standard in wood surface detection is solved, thereby improving the accuracy and reliability of wood surface defect detection.

CN122409667APending Publication Date: 2026-07-17ZHONGSHAN HUASHENG FURNITURE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGSHAN HUASHENG FURNITURE MFG CO LTD
Filing Date
2026-06-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing wood surface inspection methods lack stable reference benchmarks when faced with the interplay of natural texture gradients and local structural disturbances, leading to breaks or spread in defect boundary identification, which affects the consistency of inspection results and the reliability of sorting and positioning.

Method used

By constructing a reference texture representation corresponding to the original image, reorganizing the pixel arrangement relationship, and combining the correlation between the direction of brightness change and the direction of color change, the offset change is expressed in partitions to form an abnormal region representation with structural orientation. The defect contour range is defined by using the turning trajectory and the region closure relationship.

Benefits of technology

It improves the consistency of discrimination between different regions, enhances the stability of boundary expression, and improves the accuracy and reliability of wood surface defect detection.

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Abstract

本发明涉及木材表面检测技术领域,具体为基于图像生成的木材表面瑕疵检测方法及系统,包括以下步骤,采集木板表面图像,结合补光记录确定纹理方向排列集,依据纹理方向排列集构建参考纹理映射数据,对原始图像与参考纹理进行偏移比对,再结合局部成像结果确定缺陷边界轮廓集,形成分拣位置索引结果。本发明通过构建与原始图像对应的参考纹理表达形式,重组像素排列关系,使自然纹理变化呈现连续结构,再结合亮度变化方向与色彩变化方向之间的关联关系,对偏移变化进行分区表达,形成具有结构指向的异常区域表征,进一步利用转向轨迹与区域闭合关系限定缺陷轮廓范围,使检测过程形成基于结构差异的判定路径。
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