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Method and device for perception of an object by its shape, its size and/or its orientation

  • US 20020120594A1
  • Filed: 06/08/2001
  • Published: 08/29/2002
  • Est. Priority Date: 02/24/2000
  • Status: Active Grant
First Claim
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1. A method for localization of a shape in a space represented by pixel data forming a multidimensional space i, j, evolving with time, and represented at a succession of instants T, wherein the data is associated with a plurality of parameters {A, B, . . . } in the form of digital signals {DATA(A), DATA(B), . . . } composed of a sequence {Aijt, Bijt, . . . } of binary numbers of n bits associated with synchronization signals defining the instants T of the space and the position i, j in the space, at which the signals {Aijt, Bijt, . . . } are received, the method comprising:

  • a) receiving the pixel data;

    b) identifying a main region of interest of the space based on a statistic criterion applied to one of said parameters, the identified region having a center of gravity;

    c) repeating step b) using the pixel data associated with the main region of interest so as to identify one or more other regions inside the main region;

    d) for each identified region of interest, incrementing a counter for each consecutive valid frame; and

    e) recording the center of gravity of each identified region of interest for each valid frame.

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