摘要:
Methods and apparatus are provided for determining quantization parameter predictors from a plurality of neighboring quantization parameters. An apparatus includes an encoder for encoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data. The quantization parameter predictor is determined using multiple quantization parameters from previously coded neighboring portions. A difference between the current quantization parameter and the quantization parameter predictor is encoded for signaling to a corresponding decoder.
摘要:
Methods and apparatus are provided for an adaptive directional filter for video restoration. An apparatus includes a video encoder for encoding at least a portion of a picture by categorizing pixels in the portion into respective ones of a plurality of groups, and selecting on a pixel basis filtering parameters for filtering the pixels responsive to the respective ones of the plurality of groups to which the pixels belong.
摘要:
Methods and apparatus are provided for intra coding a block having pixels assigned to groups. An apparatus includes a video encoder for encoding a block in a picture using intra prediction by dividing pixels within the block into at least a first group and a second group and encoding the pixels in the first group prior to encoding the pixels in the second group. A prediction for at least one of the pixels within the second group is obtained by evaluating the pixels within the first group and the second group.
摘要:
Methods and apparatus are provided for constrained transforms for video coding and decoding having transform selection. An apparatus includes a video encoder for encoding at least a block in a picture by selecting a particular transform from at least a first transform and a second transform that is different than the first transform, and applying the particular transform to a residue of the block. Transform coefficients for the second transform are selected responsive to a deblocking filter that is present in the video encoder.
摘要:
Methods and apparatus are provided for adaptive interpolative intra block encoding and decoding. An apparatus includes a video encoder for encoding at least an intra block in a picture by dividing the intra block into at least a first partition and a second partition, and generating predictions of pixels in the second partition by adaptively interpolating reconstructed pixels from the first partition.
摘要:
Methods and apparatus are provided for adaptive coupled pre-processing and post-processing filters for video encoding and decoding. The apparatus and method encode input data for a picture into a resultant bitstream, wherein said video encoder comprises a pre-filter and a post-filter coupled to the pre-filter, wherein said pre-filter filters the input data for the picture and the post-filter filters in-loop reconstructed data for the picture.
摘要:
Methods and apparatus are provided for improved chroma transforms for inter frames in video encoding and decoding. The apparatus and method encode at least a portion of a picture using inter-coding, wherein a transform is adaptively selected, from among a plurality of transforms, to apply to chroma components of the portion responsive to at least one selection criterion (650, 850, 1050).
摘要:
There is provided an apparatus. The apparatus includes an encoder (100) for encoding picture data for at least a block. The encoder (100) applies a probability update process to at least one of a non-coded symbol and a non-coded syntax associated with the block.
摘要:
Methods and apparatus are provided for reusing tree structures to encode and decode binary sets. The method encodes a binary set of data using a tree structure, wherein said encoding step encodes a portion of the binary set using a portion of the tree structure and encodes another portion of the binary set by reusing at least some of the portion of the tree structure used to encode the portion of the binary set.
摘要:
Methods and apparatus are provided for adaptive transform selection for video encoding and decoding. An apparatus includes a video encoder for encoding at least a block in a picture using a transform. The transform used to encode the block is selected from a plurality of transforms. The plurality of transforms is adaptively updated during the encoding of the picture.