Method and apparatus for boundary filtering for intrabc and intraTMP modes

A video decoder comprising:

• at least one memory configured to store computer program code;
• and
• at least one processor configured to access the computer program code and operate as instructed by the computer program code, the computer program code including:
• receiving code configured to cause the at least one processor to receive a coded video bitstream that includes a current picture with at least one block located at a boundary of the current picture and coded in accordance with one of (i) an intra block copy (IBC) mode, (ii) an intra template matching (intraTMP) mode, and (iii) an IBC merge mode,
• determining code configured to cause the at least one processor to determine whether boundary filtering is enabled for the at least one block based on a syntax element in the received coded video stream,
• filtering code, and
• determining code,
• wherein based on a determination that the boundary filtering is enabled:
• the filtering code is configured to cause the at least one processor to filter one or more boundary samples corresponding to the at least one block to generate one or more filtered samples, and
• the decoding code is configured to cause the at least one processor to decode the at least one block based on the generated one or more filtered samples, and
• wherein based on a determination that the boundary filtering is not enabled, the decoding code is configured to cause the at least one processor to decode the at least one block without filtering the one or more boundary samples.

A non-transitory computer readable medium having instructions stored therein, which when executed by a processor in a video decoder cause the processor to execute a method comprising:

• receiving a coded video bitstream that includes a current picture with at least one block located at a boundary of the current picture and coded in accordance with one of (i) an intra block copy (IBC) mode, (ii) an intra template matching (intraTMP) mode, and (iii) an IBC merge mode;
• determining whether boundary filtering is enabled for the at least one block based on a syntax element in the received coded video stream;
• based on a determination that the boundary filtering is enabled:
• filtering one or more boundary samples corresponding to the at least one block to generate one or more filtered samples, and
• decoding the at least one block based on the generated one or more filtered samples;
• and
• based on a determination that the boundary filtering is not enabled, decoding the at least one block without filtering the one or more boundary samples.