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Proceedings Paper

Microbinary element for optical wavelet transform
Author(s): Gaogui Huang; Wenyi Feng; Yingbai Yan; Guofan Jin
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Paper Abstract

In order to simplify an opto-electronic hybrid system for texture segmentation based on the multi-channel filtering framework in the human visual theory, a micro-binary optical element (BOE) is designed and fabricated. The BOE has the functions of splitting, filtering and imaging simultaneously. The focal length of the BOE is 150mm and the diameter is 4mm. It contains sixteen Gabor wavelet filters with scales decreased by 2 orders and with our orientations separated every 45 degree, which can be used to perform a nearly complete decomposition with wavelet transform. The relief surface structure with minimum feature scale of 1.5micrometers is fabricated by using the photolithography and ion etching technique. In this paper, the functions of the BOE and the simulation of the filtering are described in detail, the experimental results and improvement of the element are given.

Paper Details

Date Published: 5 September 1997
PDF: 8 pages
Proc. SPIE 3224, Micromachined Devices and Components III, (5 September 1997); doi: 10.1117/12.284540
Show Author Affiliations
Gaogui Huang, Tsinghua Univ. (China)
Wenyi Feng, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 3224:
Micromachined Devices and Components III
Kevin H. Chau; Patrick J. French, Editor(s)

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