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JRM Vol.18 No.6 pp. 787-794
doi: 10.20965/jrm.2006.p0787
(2006)

Paper:

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Visually Guided Microassembly with Active Zooming

Xiaodong Tao*, Hyungsuck Cho*, and Youngjun Cho**

*Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-dong, Daejeon, Korea

**Mechatronics Team, Korea Institute of Industrial Technology (KITECH), Chungnam, Chunan-Si, Korea

Received:
April 5, 2006
Accepted:
August 14, 2006
Published:
December 20, 2006
Creative Commons License
Keywords:
microassembly, visual servoing, active zooming
Abstract
Vision techniques used in automatic microassembly are limited by inherent problems such as small depth of focus and small field of view. Microassembly must, however, initially detect microparts in a wide field of view and large depth of field while maintaining high resolution. We propose microassembly using active zooming that can overcome these limitations. For a small field of view, active zooming prevents the target from getting out of the field of view during microassembly. For a small depth of focus, our proposal is based on focus measure to maintain clear target image in the field of view during microassembly. Two-step assembly thus ensures zoom microscopy maintaining a wide field of view and large depth of field initially and high resolution at the end. Peg-in-hole assembly experiments confirmed the feasibility of our proposal.
Cite this article as:
X. Tao, H. Cho, and Y. Cho, “Visually Guided Microassembly with Active Zooming,” J. Robot. Mechatron., Vol.18 No.6, pp. 787-794, 2006.
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