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Method for general image manipulation and composition

  • US 5,852,673 A
  • Filed: 11/21/1996
  • Issued: 12/22/1998
  • Est. Priority Date: 03/27/1996
  • Status: Expired due to Fees
First Claim
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1. In a process of photorealistically processing a portion of a source image, to form a target image using a palette of colors, said process having at least a color selection step and a blending step, the improvement comprising:

  • in the color selection step, classifying each part of an image segment of the source image in a color space of at least three dimensions as a foreground region, a background region or a transition region; and

    in the blending step,formulating a color gradient between a new foreground color which has been selected by said color selection step and an original background color across said transition region, said gradient defining a seamless color transition between said foreground region and said background region without artificial discontinuities;

    employing difference vectors to define an endpoint of a transition vector between said background color and said new foreground color; and

    mapping said transition vector from said background color to said new foreground color.

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