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Method and apparatus for block vector signaling and derivation in intra picture block compensation

  • US 10,448,026 B1
  • Filed: 12/28/2018
  • Issued: 10/15/2019
  • Est. Priority Date: 07/09/2018
  • Status: Active Grant
First Claim
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1. A method of video decoding for a video decoder, comprising:

  • acquiring a current picture from a coded video bitstream;

    determining whether a current block in the current picture is coded in an intra block copy mode;

    in response to the determination that the current block is coded in the intra block copy mode, determining whether a current block vector of the current block is one of (i) a signaled block vector and (ii) a derived block vector; and

    in response to determining that the current block vector is the derived block vector;

    (i) selecting a region in the reference picture, the region divided into a plurality of locations,(ii) determining a difference between a template and each of the plurality of locations in the region,(iii) deriving the current block vector based on a displacement vector between the current block and a location in the region having a minimum difference with the template with respect to each other location in the region,(iv) selecting a reference block in the current picture based on the derived current block vector, and(v) decoding the current block based on at least one characteristic of the reference block.

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