Scaling Theorems for Zero Crossings of Bandlimited Signals

  • Authors:
  • Vo Anh;Ji Yu Shi;Hung Tat Tsui

  • Affiliations:
  • -;-;-

  • Venue:
  • IEEE Transactions on Pattern Analysis and Machine Intelligence
  • Year:
  • 1996

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Abstract

Scale-space filtering is the only known method which provides a hierarchic signal description method by extracting features across a continuum of scales. One of its important characteristics is that it demands the filtering involved does not create generic features as the scale increases. It has been shown in [4], [5], [6] that the Gaussian filter is unique in holding this remarkable property. This is in essence the so-called scaling theorem. In this paper, we propose two scaling theorems for band-limited signals. They are applicable to a broader class of signals and a bigger family of filtering kernels than in [4], [5],[6]. An in-depth discussion of our theorems and the previously published ones is also given.