Performing transform dependent de-blocking filtering

摘要

In general, techniques are described for performing transform dependent de-blocking filtering, which may be implemented by a video encoding device. The video encoding device may apply a transform to a video data block to generate a block of transform coefficients, apply a quantization parameter to quantize the transform coefficients and reconstruct the block of video data from the quantized transform coefficients. The video encoding device may further determine at least one offset used in controlling de-blocking filtering based on the size of the applied transform, and perform de-blocking filtering on the reconstructed block of video data based on the determined offset. Additionally, the video encoder may specify a flag in a picture parameter set (PPS) that indicates whether the offset is specified in one or both of the PPS and a header of an independently decodable unit.

主权项

1. A method of encoding video data, the method comprising:
applying a transform to a block of the video data to generate a block of transform coefficients; applying a quantization parameter to quantize the block of transform coefficients; generating an encoded version of the block of video data for a video bitstream based on the quantized block of transform coefficients; reconstructing the block of video data from the quantized block of transform coefficients; determining at least one offset used for one or both of determining whether to perform de-blocking filtering of the reconstructed block of video data or used in determining de-blocking filtering strength, wherein the at least one offset comprises one or more of a tc offset and a β offset, wherein the tc offset comprises an offset used for one or both of determining whether to perform de-blocking filtering or determining de-blocking filtering strength for both luma and chroma aspects of the reconstructed block of video data, and wherein the β offset comprises an offset used for one or both of determining whether to perform de-blocking filtering or determining de-blocking filtering strength for luma aspects of the reconstructed block of video data performing de-blocking filtering on the reconstructed block of video data based on the determined at least one offset; specifying a flag in a picture parameter set (PPS) of the video bitstream that indicates whether the at least one offset is specified as at least one syntax element in one or both of the PPS and a header of an independently decodable unit that includes the encoded version of the block of video data; and specifying the at least one offset as at least one syntax element in one or both of the PPS and the header of the independently decodable unit that includes the encoded version of the block of video data.