Context-based reshaping algorithms for encoding video data
Номер патента: EP4420353A1
Опубликовано: 28-08-2024
Автор(ы): Guan-Ming Su, Neeraj J. GADGIL
Принадлежит: Dolby Laboratories Licensing Corp
Опубликовано: 28-08-2024
Автор(ы): Guan-Ming Su, Neeraj J. GADGIL
Принадлежит: Dolby Laboratories Licensing Corp
Реферат: Systems and methods for context-based encoding of video data using reshaping algorithms. One method includes receiving the video data, the video data composed of a plurality of image frames, each image frame including a plurality of pixel blocks. The method includes determining, for each pixel block, a luma bin index, determining, for each luma bin, a banding risk value, and determining Gaussian function parameters based on the banding risk value. The method includes generating a differential reshaping function using the Gaussian function parameters, computing a luma-based forward reshaping function based on the differential reshaping function, and generating an output image for each image frame by applying the luma-based forward reshaping function to the respective image frame.
Method and apparatus for encoding or decoding video data with frame portions
Номер патента: US11876962B2. Автор: Franck Denoual,Frederic Maze,Nael Ouedraogo,Jonathan Taquet. Владелец: Canon Inc. Дата публикации: 2024-01-16.