Sharp Kabushiki Kaisha Corporation

Chih-Yuan Chen

Yu-Chiao Yang

Chih-Yu Teng

A method of decoding video data performed by an electronic device is provided. The method receives the video data and determines a block unit from a current frame included in the video data. The method determines an extrapolation merge list of the block unit. The extrapolation merge list includes multiple extrapolation merge candidates. The method selects an extrapolation reference candidate from the extrapolation merge candidates for the block unit. Each of the extrapolation merge candidates includes multiple previous extrapolation parameters used to reconstruct a corresponding one of multiple extrapolation-reconstructed blocks. The extrapolation reference candidate is one of the extrapolation merge candidates. The method then determines an extrapolation prediction filter of the block unit based on the extrapolation reference candidate, and reconstructs the block unit based on the extrapolation prediction filter.

Device and method for decoding video data

A method of encoding video data is provided. The method determines a block unit of an image frame of the video data. The method determines, for the block unit, a first merge candidate list including multiple merge candidates, and identifies multiple merge subgroups from the first merge candidate list. The method determines multiple first cost values each corresponding to one of the merge candidates, and determines an arrangement of the merge candidates in each of the merge subgroups based on the first cost values. The method determines a second merge candidate list by selecting, from each of the merge subgroups, a first K merge candidates of the merge candidates ordered based on the arrangements. Then, the method selects one of the merge candidates in the second merge candidate list to predict the block unit and encodes one or more merge indices into a bitstream based on the selected merge candidate.

Device and method for coding video data

A method of decoding video data performed by an electronic device is provided. The method receives the video data and determines a block unit from a current frame included in the video data. The method further determines an intra prediction mode from a plurality of intra default modes, determine a cross-component prediction (CCP) merge list of the block unit including a plurality of CCP merge candidates; and selecting one of the CCP merge candidates for the block unit to determine a prediction model of the selected CCP merge candidate. The method then predicts the block unit using the prediction model of the selected CCP merge candidate to generate a first prediction block, predicts the block unit based on the intra prediction mode to generate a second prediction block, and reconstructs the block unit based on the first prediction block and the second prediction block.

Embodiments of the disclosure provide a method for determining a specific linear model and a video processing device. The method includes: determining a plurality of linear model parameters of each of a plurality of linear models; determining a chroma template reconstruction and a luma template, wherein the chroma template reconstruction and the luma template are associated with a specific chroma block; determining a chroma template prediction corresponding to each of the plurality of linear models based on the luma template and the corresponding linear model parameters; determining a template cost of each of the plurality of linear models based on the chroma template reconstruction and the corresponding chroma template prediction; and selecting the specific linear model from the linear models based on the template cost of each of the plurality of linear models.

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Taipei, Taiwan

Chih-Yuan Chen