公开(公告)号：US20230047271A1

公开(公告)日：2023-02-16

申请号：US17865530

申请日：2022-07-15

申请人： MediaTek Singapore Pte. Ltd.

发明人： Olena Chubach ,  Yu-Wen Huang ,  Ching-Yeh Chen

IPC分类号： H04N19/186 ,  H04N19/182 ,  H04N19/132

摘要： A down-sample video coding system is provided. A decoding system receives to be decoded data from a bitstream for one or more pictures of a video. Each picture includes pixels having different color components. The decoding system receives up-down-sampling parameters that are applicable to a current video unit in the received data. The up-down-sampling parameters include different subsets for different color components. The decoding system decodes the data to reconstruct the current video unit. The decoding system up-samples the reconstructed current video unit according to the up-down-sampling parameters. The different color components of the current video unit are up-sampled according to different subsets of the up-down-sampling parameters.

公开(公告)号：US12041248B2

公开(公告)日：2024-07-16

申请号：US17865530

申请日：2022-07-15

申请人： MediaTek Singapore Pte. Ltd.

发明人： Olena Chubach ,  Yu-Wen Huang ,  Ching-Yeh Chen

IPC分类号： H04N19/186 ,  H04N19/132 ,  H04N19/182

CPC分类号： H04N19/186 ,  H04N19/132 ,  H04N19/182

摘要： A down-sample video coding system is provided. A decoding system receives to be decoded data from a bitstream for one or more pictures of a video. Each picture includes pixels having different color components. The decoding system receives up-down-sampling parameters that are applicable to a current video unit in the received data. The up-down-sampling parameters include different subsets for different color components. The decoding system decodes the data to reconstruct the current video unit. The decoding system up-samples the reconstructed current video unit according to the up-down-sampling parameters. The different color components of the current video unit are up-sampled according to different subsets of the up-down-sampling parameters.

公开(公告)号：US11343539B2

公开(公告)日：2022-05-24

申请号：US17283180

申请日：2019-10-08

申请人： MediaTek Singapore Pte. Ltd.

发明人： Olena Chubach ,  Shih-Ta Hsiang ,  Mohammed Golam Sarwer

IPC分类号： H04N19/61 ,  H04N19/70 ,  H04N19/124 ,  H04N19/176

摘要： A method and apparatus for video encoding using improved last significant coefficient coding are disclosed. According to the present invention, a location of last significant coefficient in the transform block is encoded to generate one or more syntax elements and a maximum value of the syntax elements is dependent on a block size of the transform block and a zero-out threshold, where coefficients of the transform block with coordinates greater than the zero-out threshold are set to zero. A method and apparatus for video decoding using improved last significant coefficient coding are also disclosed.