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A pixel-parallel image processor for Gabor filtering based on merged analog/digital architecture

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3 Author(s)
Morie, T. ; Kyushu Inst. of Technol., Kitakyushu, Japan ; Umezawa, J. ; Iwata, A.

Gabor filtering is a powerful feature extraction method for image recognition. We propose a pixel-parallel processor for Gabor filtering using a newly developed algorithm with nearest-neighbor connections. The LSI has been designed using 0.35 μm CMOS technology based on the merged analog/digital circuit architecture, which uses pulse-width modulation (PWM) signals. The LSI includes 62×71 pixel circuits on a 9.8 mm sq. chip area. Experiments using the fabricated LSI have verified that the spatial frequency of the image is correctly extracted.

Published in:

VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on

Date of Conference:

17-19 June 2004