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METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO IMAGES

  • US 20080123747A1
  • Filed: 11/28/2007
  • Published: 05/29/2008
  • Est. Priority Date: 11/28/2006
  • Status: Abandoned Application
First Claim
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1. A method of encoding an image comprising:

  • dividing a current image frame into a background area and an object area;

    comparing the current image frame with a previous image frame, thereby determining whether a background area or an object area has changed between the current image frame and the previous image frame;

    according to the result of the determination, updating a reference background image which is generated from backgrounds of previous image frames, by using the background area of the current image frame, and storing the updated reference background image; and

    performing motion estimation of an image frame subsequent to the current image frame by using the updated reference background image.

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