Method and associated device for filtering digital video images

  • US 9,800,891 B2
  • Filed: 01/19/2001
  • Issued: 10/24/2017
  • Est. Priority Date: 01/20/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A method, comprising:

  • decoding a first encoded image block, which has been encoded using a first type of prediction encoding method, and a second encoded image block, which has been encoded using a second type of prediction encoding method, in accordance with their respective prediction encoding methods to form a first decoded image block and a second decoded image block, the first type of prediction encoding method and the second type of prediction encoding method being selected from a group of prediction encoding methods comprising at least;

    intra coding, copy coding, motion-compensated prediction coding, and not-coded coding, a block boundary being formed between the first and second decoded image blocks, the first decoded image block being on a first side of the block boundary, the second decoded image block being on a second side of the block boundary;

    providing information on the first and second prediction encoding methods to a block boundary filter; and

    performing, by the block boundary filter, an adaptive block boundary filtering operation on the block boundary formed between the first decoded image block on the first side of the block boundary and the second decoded image block on the second side of the block boundary, the method further comprising;

    determining, by the block boundary filter, a first number of pixels to be examined on the first side of the block boundary and a second number of pixels to be examined on the second side of the block boundary as a parameter of the adaptive block boundary filtering operation, based on the types of the first and the second prediction encoding methods.

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