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Pattern discriminator

  • US 4,566,126 A
  • Filed: 04/11/1983
  • Issued: 01/21/1986
  • Est. Priority Date: 04/30/1982
  • Status: Expired due to Fees
First Claim
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1. In a pattern discriminator which receives scanning data obtained by scanning objects within defined window regions with a photoelectric converter of the two-dimensional scanning type, and having means for converting the scanned data into pixel binary data representing characteristics of the objects scanned by using a threshold value, and having means for evaluating the binary data in accordance with predetermined criteria and for producing an output signal indicative of said evaluation, the improvement comprising means for obtaining data which defines polygonal window regions within which scanning data is obtained, comprising:

  • data input means for inputting apex data representing the location of the pixels at the apexes of at least one window polygon representing at least one desired window region;

    computing means for computing coordinate data representing the coordinates of each pixel on the polygon perimeter lines connecting adjacent apexes by taking the coordinates of sequentially inputted apex data as adjacent apexes of the window polygon; and

    memory means for storing the apex and coordinate data as starting and ending pixels of each polygonal window region on each scanning line of said scanning.

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