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Optical Engineering • Open Access

Removal of parasitic image due to metal specularity based on digital micromirror device camera
Author(s): Shou-Bo Zhao; Fu-Min Zhang; Xing-Hua Qu; Zhe Chen; Shi-Wei Zheng

Paper Abstract

Visual inspection for a highly reflective surface is commonly faced with a serious limitation, which is that useful information on geometric construction and textural defects is covered by a parasitic image due to specular highlights. In order to solve the problem, we propose an effective method for removing the parasitic image. Specifically, a digital micromirror device (DMD) camera for programmable imaging is first described. The strength of the optical system is to process scene ray before image formation. Based on the DMD camera, an iterative algorithm of modulated region selection, precise region mapping, and multimodulation provides removal of the parasitic image and reconstruction of a correction image. Finally, experimental results show the performance of the proposed approach.

Paper Details

Date Published: 23 June 2014
PDF: 7 pages
Opt. Eng. 53(6) 063105 doi: 10.1117/1.OE.53.6.063105
Published in: Optical Engineering Volume 53, Issue 6
Show Author Affiliations
Shou-Bo Zhao, Tianjin Univ. (China)
Fu-Min Zhang, Tianjin Univ. (China)
Xing-Hua Qu, Tianjin Univ. (China)
Zhe Chen, Tianjin Univ. (China)
Shi-Wei Zheng, Tianjin Univ. (China)

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