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Method and apparatus for detecting moving object

  • US 6,931,146 B2
  • Filed: 12/07/2000
  • Issued: 08/16/2005
  • Est. Priority Date: 12/20/1999
  • Status: Expired due to Fees
First Claim
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1. A method of detecting a moving object, comprising:

  • (a) a first dividing step of dividing an input image into a plurality of first unit blocks;

    (b) a second dividing step of dividing a given background image into a plurality of second unit blocks;

    (c) a moving block extracting step of comparing said first unit blocks with said second unit blocks for every unit block and extracting a number of said first unit blocks, which are different in brightness distribution pattern from the corresponding second unit blocks, as moving blocks;

    (d) a moving area setting step of setting a moving area that surrounds said moving blocks extracted in said moving block extracting step; and

    (e) a brightness comparing step of comparing a distribution of brightness values of the input image with a distribution of brightness values of the background image in the moving area, which is set by said moving area setting step, to discriminate whether or not a moving object appears in the input image based on a size of the moving object.

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