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JRM Vol.17 No.4 pp. 372-377
doi: 10.20965/jrm.2005.p0372
(2005)

Paper:

A Digital Vision Chip for Early Feature Extraction with Rotated Template-Matching CA

Masayuki Ikebe, and Tetsuya Asai

Graduate School of Information Science and Technology, Hokkaido University, Kita 14, Nishi 9, Kita-ku, Sapporo 060-0814, Japan

Received:
December 17, 2004
Accepted:
April 1, 2005
Published:
August 20, 2005
Keywords:
cellular automata, high-speed image processing, rotated erosion, CMOS image sensor, feature extraction
Abstract

We discuss a cellular-automata (CA) LSI core that extracts early features of objects in images, such as sizes and skeletons. A CMOS-image sensor with a CA core enables high-speed image processing. We propose an efficient CA algorithm based on rotated template matching. Each cell circuit in the proposed CA is implemented by a digital circuit, and transistors in each cell circuit number 198 in full customized design. The CA LSI consists of a large number of cell circuits operating in parallel to ensure fast, efficient object extraction as the number of cells increases. With a 0.25μm CMOS process, the total area of each cell circuit is 30×30μm². Simulation results indicated that image processing with 320×240 cells operates at up to 25MHz.

Cite this article as:
Masayuki Ikebe and Tetsuya Asai, “A Digital Vision Chip for Early Feature Extraction with Rotated Template-Matching CA,” J. Robot. Mechatron., Vol.17, No.4, pp. 372-377, 2005.
Data files:
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