A mixed-signal vlsi circuit for skeletonization by grassfire transformation

M. Oláh, P. Masa, A. Lőrincz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a novel mixed-signal VLSI focal-plane array processor performing the morphological operation of skeletonization of binary images at a processing speed of up to 10K frames/second. The chip directly implements the grassfire algorithm. The system is a 2D array of identical processing elements (PEs) with integrated photodetectors allowing parallel optical input. The skeleton computation is performed in a fully parallel, asynchronous manner by local interactions between PEs, the transformed image is represented by analog values. The transformation is a VLSI analogue of time-integrated off-center-on-surround type nonlinear computation. The output of the transformation can be serially accessed with an on-chip raster-scan circuit generating multiscanning-compatible video signal. The system is currently being physically designed in a standard 0.7μm digital CMOS process. Layout of the processing element and preliminary system specifications are presented.

Original languageEnglish
Title of host publicationArtificial Neural Networks - ICANN 1997 - 7th International Conference, Proceeedings
EditorsWulfram Gerstner, Alain Germond, Martin Hasler, Jean-Daniel Nicoud
PublisherSpringer Verlag
Pages1206-1210
Number of pages5
ISBN (Print)3540636315, 9783540636311
DOIs
Publication statusPublished - 1997
Event7th International Conference on Artificial Neural Networks, ICANN 1997 - Lausanne, Switzerland
Duration: Oct 8 1997Oct 10 1997

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1327
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other7th International Conference on Artificial Neural Networks, ICANN 1997
CountrySwitzerland
CityLausanne
Period10/8/9710/10/97

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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  • Cite this

    Oláh, M., Masa, P., & Lőrincz, A. (1997). A mixed-signal vlsi circuit for skeletonization by grassfire transformation. In W. Gerstner, A. Germond, M. Hasler, & J-D. Nicoud (Eds.), Artificial Neural Networks - ICANN 1997 - 7th International Conference, Proceeedings (pp. 1206-1210). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 1327). Springer Verlag. https://doi.org/10.1007/bfb0020315