Image detection of inner wall surface of holes in metal sheets through polarization using a 3D TV monitor

Takamasa Suzuki; Katsunori Nakano; Shogo Muramatsu; Toshiro Oitate

doi:10.1117/12.999726

20 November 2012 Image detection of inner wall surface of holes in metal sheets through polarization using a 3D TV monitor

Takamasa Suzuki, Katsunori Nakano, Shogo Muramatsu, Toshiro Oitate

Author Affiliations +

Proceedings Volume 8563, Optical Metrology and Inspection for Industrial Applications II; 85630Q (2012) https://doi.org/10.1117/12.999726
Event: Photonics Asia, 2012, Beijing, China

Abstract

We propose an effective technique for optically detecting images of the inner hole-surface of a hole (hereafter, referred to as the hole-surface) using the polarization property of a 3D television (TV) monitor. The polarized light emitted by the TV monitor illuminates the hole-surfaces present in the test target placed on the screen of the monitor. When the polarizer placed in front of a camera lens is adjusted such that the camera captures a dark image for the transmitted light, only the highlighted hole-surfaces are visible in the captured image.

Citation Download Citation

Takamasa Suzuki, Katsunori Nakano, Shogo Muramatsu, and Toshiro Oitate "Image detection of inner wall surface of holes in metal sheets through polarization using a 3D TV monitor", Proc. SPIE 8563, Optical Metrology and Inspection for Industrial Applications II, 85630Q (20 November 2012); https://doi.org/10.1117/12.999726

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