Generalized video deblocking filter

One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of:

• determining a filter length associated with a boundary between a first block included in a first video frame and a second block included in the first video frame;
• computing a parameter value that minimizes a sum of squares of second derivatives associated with a first set of samples within the first block and a second set of samples within the second block, wherein the first set of samples and second set of samples are adjacent to the boundary;
• determining a plurality of filter values based on the parameter value and the filter length;
• applying a filter having the filter length and the plurality of filter values to a third set of samples within the first block and a fourth set of samples within the second block to generate a first filtered block corresponding to the first block and a second filtered block corresponding to the second block;
• and
• generating a second video frame that includes the first filtered block and the second filtered block.

A system, comprising:

• one or more memories that store instructions, and
• one or more processors that are coupled to the one or more memories and, when executing the instructions, are configured to perform the steps of:
• determining a filter length associated with a boundary between a first block included in a first video frame and a second block included in the first video frame;
• computing a parameter value that minimizes a sum of squares of second derivatives associated with a first set of samples within the first block and a second set of samples within the second block, wherein the first set of samples and second set of samples are adjacent to the boundary;
• determining a plurality of filter values based on the parameter value and the filter length;
• applying a filter having the filter length and the plurality of filter values to a third set of samples within the first block and a fourth set of samples within the second block to generate a first filtered block corresponding to the first block and a second filtered block corresponding to the second block;
• and
• generating a second video frame that includes the first filtered block and the second filtered block.