US Patent 10516885 Method and apparatus for video coding

Aspects of the disclosure provide a method and an apparatus for video coding. In some embodiments, the apparatus includes processing circuitry. The processing circuitry decodes encoding information associated with a block of a picture in a coded video bitstream. The encoding information indicates a position of a sub-region in the block, and an area of the sub-region is ¼ of an area of the block. The processing circuitry further reconstructs first samples of the block that are inside the sub-region using residual data of the first samples, and reconstructs second samples of the block that are outside of the sub-region without residue data.