CPC H04N 19/146 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/46 (2014.11)] | 28 Claims |
1. A method of decoding video data, the method comprising:
predicting, based on a plurality of color components of a block of video data coded using joint coding of chroma residuals (JCCR), a sign of a coefficient of a plurality of coefficients of a joint residual block of the block of video data, wherein predicting the sign comprises:
determining, as a weighted sum of cost values of the plurality of color components, a joint cost value of the plurality of color components, wherein determining the weighted sum of the cost values comprises:
determining a first weight for a first color component of the plurality of color components and a second weight for a second color component of the plurality of color components; and
determining the weighted sum of the cost values of the plurality of color components based on first weight and the second weight; and
predicting the sign based on the joint cost value;
generating, for each respective color component of the plurality of color components and based on the plurality of coefficients of the joint residual block, coefficients of a respective residual block of a plurality of residual blocks; and
reconstructing, based on the plurality of residual blocks, the block of video data.
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