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Sensors 2017, 17(1), 215; doi:10.3390/s17010215

Three-Dimensional Measurement for Specular Reflection Surface Based on Reflection Component Separation and Priority Region Filling Theory

The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations, Harbin University of Science and Technology, Harbin 150080, China
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Academic Editor: Vittorio M. N. Passaro
Received: 28 November 2016 / Revised: 11 January 2017 / Accepted: 17 January 2017 / Published: 23 January 2017
(This article belongs to the Section Physical Sensors)
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Abstract

Due to the strong reflection property of materials with smooth surfaces like ceramic and metal, it will cause saturation and the highlight phenomenon in the image when taking pictures of those materials. In order to solve this problem, a new algorithm which is based on reflection component separation (RCS) and priority region filling theory is designed. Firstly, the specular pixels in the image are found by comparing the pixel parameters. Then, the reflection components are separated and processed. However, for ceramic, metal and other objects with strong specular highlight, RCS theory will change color information of highlight pixels due to larger specular reflection component. In this situation, priority region filling theory was used to restore the color information. Finally, we implement 3D experiments on objects with strong reflecting surfaces like ceramic plate, ceramic bottle, marble pot and yellow plate. Experimental results show that, with the proposed method, the highlight caused by the strong reflecting surface can be well suppressed. The highlight pixel number of ceramic plate, ceramic bottle, marble pot and yellow plate, is decreased by 43.8 times, 41.4 times, 33.0 times, and 10.1 times. Three-dimensional reconstruction results show that highlight areas were significantly reduced. View Full-Text
Keywords: three-dimensional measurement; reflection component separation; specular highlight removal; priority region filling theory three-dimensional measurement; reflection component separation; specular highlight removal; priority region filling theory
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Sun, X.; Liu, Y.; Yu, X.; Wu, H.; Zhang, N. Three-Dimensional Measurement for Specular Reflection Surface Based on Reflection Component Separation and Priority Region Filling Theory. Sensors 2017, 17, 215.

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