Cross-layer video coding method and equipment and cross-layer video coding/decoding method and equipment for compensation brightness difference

Cross-layer video coding method and equipment and cross-layer video coding/decoding method and equipment for compensation brightness difference

  • CN 105,308,961 B
  • Filed: 04/07/2014
  • Issued: 07/09/2019
  • Est. Priority Date: 04/05/2013
  • Status: Active Grant
First Claim
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1. a kind of cross-layer video coding/decoding method, comprising:

  • Determine whether that the current block of the reconstructed second layer is executed luminance compensation for the reference block by using first layer;

    Based among the whole pixel for being located at the upper left side of sub-pixel of first layer, upper right side, lower left side and lower right side with firstThe immediate whole pixel of sub-pixel of layer determines the reference pixel of first layer reference block, wherein the sub-pixel of first layer is by theIndicated by the difference vector of two layers of current block, and the described and immediate whole pixel of first layer sub-pixel is by the second layerIndicated by the difference vector for being adjusted and shifting of current block;

    It will be determined as first layer reference pixel around the pixel of first layer reference block;

    Pixel based on first layer reference pixel and around the current block of the second layer determines the current block for the second layerLuminance compensation parameter,Wherein, based on the reference pixel with the immediate whole pixel of the sub-pixel of first layer to determine first layer reference block the step ofInclude;

    By will be based on instruction current block determined by the color component index of luminance block or chrominance block between whole pixelDistance dependent adjusted value be added to the second layer current block difference vector x-component and y-component adjust difference vector;

    The difference vector being adjusted is displaced to predetermined direction to generate the warp based on the color component of current block indexCross the difference vector of adjustment and displacement.

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