An intelligent system for real time automatic defect inspection on specular coated surfaces

Jinhua Li; Johné M. Parker; Zhen Hou

doi:10.1117/12.632742

24 June 2005 An intelligent system for real time automatic defect inspection on specular coated surfaces

Jinhua Li, Johné M. Parker, Zhen Hou

Proceedings Volume 5960, Visual Communications and Image Processing 2005; 596043 (2005) https://doi.org/10.1117/12.632742
Event: Visual Communications and Image Processing 2005, 2005, Beijing, China

Abstract

Product visual inspection is still performed manually or semi automatically in most industries from simple ceramic tile grading to complex automotive body panel paint defect and surface quality inspection. Moreover, specular surfaces present additional challenge to conventional vision systems due to specular reflections, which may mask the true location of objects and lead to incorrect measurements. There are some sophisticated visual inspection methods developed in recent years. Unfortunately, most of them are highly computational. Systems built on those methods are either inapplicable or very costly to achieve real time inspection. In this paper, we describe an integrated low-cost intelligent system developed to automatically capture, extract, and segment defects on specular surfaces with uniform color coatings. The system inspects and locates regular surface defects with lateral dimensions as small as a millimeter. The proposed system is implemented on a group of smart cameras using its on-board processing ability to achieve real time inspection. The experimental results on real test panels demonstrate the effectiveness and robustness of proposed system.

Citation Download Citation

Jinhua Li, Johné M. Parker, and Zhen Hou "An intelligent system for real time automatic defect inspection on specular coated surfaces", Proc. SPIE 5960, Visual Communications and Image Processing 2005, 596043 (24 June 2005); https://doi.org/10.1117/12.632742

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