Apparatus and method for de-blocking filtering

A method for processing at least one frame of a video stream, applied to an apparatus comprising a memory and a processor, the method comprising:

• storing, by the memory of the apparatus, frames of the video stream;
• processing, by the processor of the apparatus, a frame of the video stream stored in the memory using a block-based coding scheme with de-blocking filtering using a filter grid, wherein the processing of the frame of the video stream comprises coding or decoding;
• and
• determining, by the processor of the apparatus, the size F×W of the filter grid, wherein:
• (a) F is larger than a sum of a maximum number of samples used in edge de-blocking filtering of a vertical edge of a coding block and a maximum number of samples modified in de-blocking filtering of a vertical edge of the coding block;
• and
• (b) W is larger than a sum of a maximum number of samples used in de-blocking filtering of a horizontal edge of the coding block and a maximum number of samples modified in de-blocking filtering edge de-blocking of a horizontal edge of the coding block, and
• performing de-blocking filtering on an edge of the coding block overlapping the grid.

A non-transitory computer-readable medium comprising a program code which when executed by a processor of a computing device, causes the computing device to perform a method for processing at least one frame of a video stream, the method comprising:

• storing, frames of the video stream;
• processing a frame of the video stream stored in the memory using a block-based coding scheme with de-blocking filtering using a filter grid, wherein the processing of the frame of the video stream comprises coding or decoding;
• and
• determining the size F×W of the filter grid, wherein:
• (a) F is larger than a sum of a maximum number of samples used in edge de-blocking filtering of a vertical edge of a coding block and a maximum number of samples modified in de-blocking filtering of a vertical edge of the coding block;
• and
• (b) W is larger than a sum of a maximum number of samples used in de-blocking filtering of a horizontal edge of the coding block and a maximum number of samples modified in de-blocking filtering edge de-blocking of a horizontal edge of the coding block, and
• performing de-blocking filtering on an edge of the coding block overlapping the grid.