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Open AccessArticle

Saturated Imaging for Inspecting Transparent Aesthetic Defects in a Polymeric Polarizer with Black and White Stripes

College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
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Materials 2018, 11(5), 736; https://doi.org/10.3390/ma11050736
Received: 16 March 2018 / Revised: 3 May 2018 / Accepted: 3 May 2018 / Published: 7 May 2018
(This article belongs to the Special Issue Damage Detection and Characterization of High Performance Composites)
Machine vision systems have been widely used in industrial production lines because of their automation and contactless inspection mode. In polymeric polarizers, extremely slight transparent aesthetic defects are difficult to detect and characterize through conventional illumination. To inspect such defects rapidly and accurately, a saturated imaging technique was proposed, which innovatively uses the characteristics of saturated light in imaging by adjusting the light intensity, exposure time, and camera gain. An optical model of defect was established to explain the theory by simulation. Based on the optimum experimental conditions, active two-step scanning was conducted to demonstrate the feasibility of this detection scheme, and the proposed method was found to be efficient for real-time and in situ inspection of defects in polymer films and products. View Full-Text
Keywords: polymeric polarizer; transparent aesthetic defect; machine vision; saturated imaging polymeric polarizer; transparent aesthetic defect; machine vision; saturated imaging
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MDPI and ACS Style

Yu, C.; Chen, P.; Zhong, X.; Pan, X.; Deng, Y. Saturated Imaging for Inspecting Transparent Aesthetic Defects in a Polymeric Polarizer with Black and White Stripes. Materials 2018, 11, 736.

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