Patent ID: 9344717
Filing Date: 2016-05-17
CPC Classification: H04N

Claim Text:
1. A method of applying deblocking and sample adaptive offset (SAO) processing to reconstructed video data, the method comprising: generating reconstructed video data by decoding a video bitstream using entropy decoding, inverse scaling, inverse quantization, inverse transform, intra/inter prediction or a combination thereof; applying deblocking filter to an image unit of the reconstructed video data to generate deblocked video data; determining tri-state comparison results for at least a portion of one partially deblocked or to-be-deblocked pixel row or column of the image unit according to SAO type of said at least a portion of one partially deblocked or to-be-deblocked pixel row or column, wherein the tri-state comparison results are determined for each pixel of said at least a portion of one partially deblocked or to-be-deblocked pixel row or column by comparing said each pixel of said at least a portion of one partially deblocked or to-be-deblocked pixel row or column with a neighboring deblocked pixel of a previous row or column, and wherein the tri-state comparison results comprise “larger”, “equal” and “smaller” states; and storing the tri-state comparison results in a buffer, where the tri-state comparison results are read back from the buffer after a part of a subsequent image unit is available to enable deblocking process on said at least a portion of one partially deblocked or to-be-deblocked pixel row or column and before SAO processing on said at least a portion of one partially deblocked or to-be-deblocked pixel row or column.