Improvement of Visual Inspection Using Sequences of Monochromatic Light Sources

This research proposes a visual inspection systems using sequences of monochromatic light sources. The proposed method focuses on the examination of molded plastic parts. A sample is illuminated by a succession of 7 colored lights and for each configuration a picture is taken. Then, in order to spot...

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Bibliographic Details
Published in2021 7th International Conference on Electrical, Electronics and Information Engineering (ICEEIE) pp. 406 - 410
Main Authors Masashi, Yamada, Valentin, Grave, Osamu, Fukuda, Nobuhiko, Yamaguchi, Hiroshi, Okumura
Format Conference Proceeding
LanguageEnglish
Published IEEE 02.10.2021
Subjects
Defect detection algorithm
Detection algorithms
Image processing
Inspection
Light sources
Lighting
Monochromatic light sources
Plastics
Visual inspection
Visualization
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Summary:This research proposes a visual inspection systems using sequences of monochromatic light sources. The proposed method focuses on the examination of molded plastic parts. A sample is illuminated by a succession of 7 colored lights and for each configuration a picture is taken. Then, in order to spot potential flaws within a part, its images are analyzed using an inspection program based on statistical processing. For every part tested, the precision of the inspection was evaluated from the aggregation of results obtained with each light. Throughout the experiments, it was observed that the accuracy of the system had increased: exposing its targets to a series of monochromatic lights made it able to perceive more features than when it solely relied on a white illumination.
DOI:10.1109/ICEEIE52663.2021.9616730