Constraint for template matching in decoder side motion derivation and refinement
Abstract:
A method of video decoding in a decoder is described. A coded video bit stream is received. A template of a first block in a picture in the received coded bitstream is determined in response to a determination that decoder-side motion vector derivation (DMVD) is applied to the first block for reconstruction. A first region of the template is determined to be overlapping with a second block that is decoded prior to the first block. Further, a second region of the template is determined by subtracting the first region from the template. Motion information of the first block is derived using template matching based on reconstruction samples of the second region.
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