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Color correction system and method with scene-change detection

  • US 4,823,184 A
  • Filed: 09/08/1987
  • Issued: 04/18/1989
  • Est. Priority Date: 04/09/1984
  • Status: Expired due to Term
First Claim
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1. A system for color correcting video picture signals representative of images stored by an image recording medium, comprising:

  • transport means for moving the image recording medium and supplying video picture signals representative of each of the images stored by the image recording medium, said video picture signals being capable of producing pictures corresponding to the images;

    discrimination means for discriminating video picture signals forming one area of the picture from video picture signals forming the remainder of the picture, said one area being smaller than the entire area of the picture;

    scene change detecting means for processing said video picture signals and detecting a change of scene in said pictures, said detecting means including means for analyzing a change in each of at least two different parameters of said video picture signals in relation to a predetermined standard, said detecting means being connected to said discrimination means and analyzing only video picture signals in said one area, said detecting means including means for generating a change detect signal when the change in at least one of said parameters satisfies said predetermined standard; and

    color correction means for developing color correction signals for the video picture signals forming the pictures in various scenes.

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