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Proceedings Paper

Application of superresolution technology in non-contact measurement on edge detection of precise parts
Author(s): Hong Lu; Bo Lei; Jae-Youn Jung
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Paper Abstract

The precision of traditional methods of edge detection of precise Parts with linear CCD only reach &mgr;m because of the size of CCD cells. A sup-pixel edge detection method of CCD based on least square method and derivative operator method is proposed to improve the measurement precision. The Image Gradient obtained using derivative operator method. Point A with the max Gradient is then regarded as the point of the edge, and then the pixels nearby edge are interpolated linearly. For example, a high-speed data acquisition system is designed using high accuracy linear CCD TCD1501D and high speed A/D converter TLC5510. Experimental results show that the resolution &mgr; of the system design is 0.02pixel and the measurement precision is improved by one order of magnitude over traditional methods of edge detection.

Paper Details

Date Published: 12 January 2009
PDF: 6 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71332M (12 January 2009); doi: 10.1117/12.810573
Show Author Affiliations
Hong Lu, Wuhan Univ. of Technology (China)
Bo Lei, Wuhan Univ. of Technology (China)
Jae-Youn Jung, Chonbuk National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology
Jiubin Tan; Xianfang Wen, Editor(s)

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