Walsh descriptors for shape discrimination

I. Dinstein, T. Silberberg

Research output: Contribution to journalArticlepeer-review


A shift invariant Walsh power spectrum for real periodic signals is defined, and an algorithm for its computation is presented. The Walsh power spectrum of the boundary angular function of Zahn and Roskies (1972) is computed. It is shown that most of the energy of the power spectrum is concentrated in the lower sequency coefficients. A small number of low-sequency coefficients is enough for shape discrimination of closed contours.

Original languageEnglish
Pages (from-to)47-58
Number of pages12
JournalInternational Journal of Electronics
Issue number1
StatePublished - 1 Jan 1980

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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