发明名称 |
Method of inspecting images to detect defects |
摘要 |
<p>The present invention relates to a method for automated defect detection in textured materials. The present invention utilizes linear Finite Impulse Response (FIR) filters with optimized energy separation. Specifically, the invention provides a method of inspecting industrial products for defects. The method has steps of: automated design of optimized filters from samples of products, using these optimal filters to filter the acquired images of product under inspection, computing the energy of each pixel in a local region, and finally segmenting the defect by thresholding each pixel. The present invention also relates to a method of inspection of unknown (unsupervised) defects in web materials. In an unsupervised inspection, information from a finite number of optimal filters is combined using a data fusion module. This module attempts to nullify the false alarm associated with the information arriving from different channels. <IMAGE></p> |
申请公布号 |
EP1148332(A2) |
申请公布日期 |
2001.10.24 |
申请号 |
EP20010109375 |
申请日期 |
2001.04.18 |
申请人 |
THE UNIVERSITY OF HONG KONG |
发明人 |
KWOK-HUNG, GRANTHAM PANG;AIAY, KUMAR |
分类号 |
G01N21/898;(IPC1-7):G01N21/898;G01N21/896 |
主分类号 |
G01N21/898 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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