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Image representation using tree-like structures

  • US 5,274,718 A
  • Filed: 09/30/1991
  • Issued: 12/28/1993
  • Est. Priority Date: 09/30/1991
  • Status: Expired due to Term
First Claim
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1. A method, for use in an image coding system, to develop a signal that represents at least one image contained within a signal containing images, said method comprising the steps of:

  • selecting a set of arbitrarily oriented lines that partition the image into a set of unpartitioned convex regions;

    assigning a description to each of said unpartitioned convex regions, said description being an estimate of the nature of the signal for said image within the region to which it is assigned; and

    forming a signal representing a binary tree in a such way that each non-leaf node of the binary tree contains at least a description of at least one line of the set of arbitrarily oriented lines and each leaf node of said binary tree contains at least a description for one of said unpartitioned convex regions;

    wherein said step of selecting is performed in an iterative fashion such that the line selected in each iteration corresponds to a point in Hough space having a maximum value for the Hough transform of a predetermined domain of an edge image corresponding to said image.

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