Method of processing colour pictures and apparatus for processing of coded video

Abstract

A method and apparatus for improving the coding performance by blending correction terms with the ALF correction term is disclosed. According to this method, An ALF (Adaptive Loop Filter) correction term is derived for a target sample of the current block. The correction terms are derived for the target sample of the current block. A final correction term is derived by blending the ALF correction term and the correction terms. A filtered target sample is generated by using the target sample and the final correction term. A method to improve the coding performance by using a luma ALF correction term for the chroma reconstruction is also disclosed. According to this method, a luma ALF correction term is derived for a target chroma sample of the current block. A filtered target chroma sample is generated by using the luma ALF correction term.

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