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5 September 1997 Microbinary element for optical wavelet transform
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Proceedings Volume 3224, Micromachined Devices and Components III; (1997)
Event: Micromachining and Microfabrication, 1997, Austin, TX, United States
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.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gaogui Huang, Wenyi Feng, Yingbai Yan, and Guofan Jin "Microbinary element for optical wavelet transform", Proc. SPIE 3224, Micromachined Devices and Components III, (5 September 1997);


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