摘要:
There are provided methods and apparatus for transform selection in video coding. An apparatus includes a video encoder for encoding at least a block in a picture by selecting a transform to apply to a residue of the block from a set of two or more available transforms. The transform is selected based on at least one of an inter prediction mode used to predict at least one reference for the block, one or more values corresponding to a motion vector, a value of a residue of one or more previously encoded blocks, a value of prediction data for the block, one or more transform selections of one or more neighboring reconstructed blocks, and a quantization step applied to transform coefficients for the residue of the block.
摘要:
Methods and apparatus are provided for template matching prediction in video encoding and decoding. An apparatus includes an encoder for encoding a target block in a picture by determining at least one predictor for the target block and respectively utilizing the at least one predictor as a template to search for at least one additional predictor for the target block.
摘要:
There is disclosed a video encoder and corresponding method for encoding video data for an image block. The video encoder performs a mode decision by performing initial motion estimation on only a subset of possible block sizes to output motion information corresponding thereto, and determining, based upon the motion information corresponding to only the subset of possible of block sizes and upon other image-related analysis data, whether other block sizes are to be evaluated.
摘要:
There is disclosed a video encoder and corresponding method for encoding video data for an image block. The video encoder performs a mode decision by performing initial motion estimation on only a subset of possible block sizes to output motion information corresponding thereto, and determining, based upon the motion information corresponding to only the subset of possible of block sizes and upon other image-related analysis data, whether other block sizes are to be evaluated.
摘要:
There are provided video encoders and corresponding methods for performing fast mode decision of B-frames. A video encoder for encoding video data for a B slice that is divisible into macroblocks includes an encoder (OO) for performing mode selection when encoding a current macroblock in the B slice by counting a number of neighboring macroblocks in the B slice coded in a DIRECT mode, and only checking one of the DIRECT MODE or a 16×16 mode for the current macroblock when the number of neighboring macroblocks coded in the DIRECT mode exceeds a predetermined threshold.
摘要:
There are provided video encoders and corresponding methods for performing fast mode decision of B-frames. A video encoder for encoding video data for a B slice that is divisible into macroblocks includes an encoder (OO) for performing mode selection when encoding a current macroblock in the B slice by counting a number of neighboring macroblocks in the B slice coded in a DIRECT mode, and only checking one of the DIRECT MODE or a 16×16 mode for the current macroblock when the number of neighboring macroblocks coded in the DIRECT mode exceeds a predetermined threshold.
摘要:
There are provided methods and apparatus for illumination compensation of intra-predicted video. An apparatus includes an encoder for encoding a picture using non-local intra prediction. The encoder includes an illumination compensation processing unit for applying illumination compensation to predicted data obtained from the non-local intra prediction. Another apparatus includes a decoder for decoding a picture using non-local intra prediction. The decoder includes an illumination compensation processing portion for applying illumination compensation to predicted data obtained from the non-local intra prediction.
摘要:
There are provided methods and apparatus for illumination compensation of intra-predicted video. An apparatus includes an encoder for encoding a picture using non-local intra prediction. The encoder includes an illumination compensation processing unit for applying illumination compensation to predicted data obtained from the non-local intra prediction.
摘要:
There are provided methods and apparatus for fast geometric mode decision in a video encoder. An apparatus includes an encoder for performing a non-exhaustive geometric mode decision using geometric model-based partitioning modes. The encoder skips a testing of the geometric model-based partitioning modes based on at least one of a correlation and a dependence between the geometric model-based partitioning modes and non-geometric partitioning modes.
摘要:
There are provided a method and apparatus for reusing available motion information as a motion estimation predictor for video encoding. The apparatus includes an encoder for encoding an image block by determining a motion estimation predictor for the image block using motion information previously generated from an element other than the encoder, and using the motion estimation predictor in a motion estimation process to generate a motion vector for the image block. The motion estimation predictor is used in place of at least one predictor otherwise used in the motion estimation process. The at least one predictor is any of a search window predictor, a temporal predictor, and a block type predictor.