Secondary boundary filtering for video coding

摘要

In one example, a video coding device is configured to intra-predict a block of video data, using values of pixels along a primary boundary of the block, to form a predicted block, determine whether to filter the predicted block using data of a secondary boundary of the block, and filter the predicted block using data of the secondary boundary in response to determining to filter the predicted block. The video coding device may determine whether to filter the predicted block based on a comparison of a Laplacian value or a gradient difference value to a threshold. The determination of whether to filter the predicted block may be based at least in part on a boundary relationship, e.g., the relationship of one boundary to another, or of a boundary to pixel values of the predicted block.

主权项

1. A method of decoding video data, the method comprising:
intra-predicting a current block of video data, using values of pixels along a primary boundary of the current block, to form a predicted block; determining whether to filter the predicted block using data of a secondary boundary of the current block, wherein the secondary boundary is perpendicular to the primary boundary; in response to determining to filter the predicted block:
prior to decoding the current block, filtering the predicted block using data of the secondary boundary;decoding a residual block for the current block; andcombining the residual block with the filtered predicted block to produce a decoded block for the current block.