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Color motion artifact detection and processing apparatus compatible with video coding standards

  • US 7,023,918 B2
  • Filed: 05/30/2002
  • Issued: 04/04/2006
  • Est. Priority Date: 05/30/2002
  • Status: Active Grant
First Claim
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1. A method for detecting a color-motion artifact in a block of a video frame, the method comprising:

  • computing a motion-compensated color-difference value associated with the block;

    determining an activity level associated with the block, wherein the activity level is indicative of a smoothness of transitions in pixel values disposed in the block;

    selecting a threshold value based on the activity level and a target bit rate associated with the block; and

    identifying the block as containing a color motion artifact if the motion-compensated color-distance value associated with the block is one of greater than and equal to the threshold value.

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