公开(公告)号：US10764588B2

公开(公告)日：2020-09-01

申请号：US16100310

申请日：2018-08-10

Applicant: Apple Inc.

Inventor： Xiang Fu ,  Linfeng Guo ,  Haiyan He ,  Wei Li ,  Xu Gang Zhao ,  Hao Pan ,  Xiaohua Yang ,  Krishnakanth Rapaka ,  Munehiro Nakazato ,  Haitao Guo

IPC: H04N19/176 ,  H04N19/126 ,  G06T7/13 ,  G06N3/08

Abstract: Techniques are disclosed for coding image data adaptively at different levels of downscaling. Such techniques may involve partitioning input data into pixel blocks for coding and performing content analysis on the pixel blocks. The pixel blocks may be input to block coders that operate at different pixel block sizes, which may code the pixel blocks input to them at their respective sizes. Except when a block coder operates at the partitioning size, block coders that operate at different pixel block sizes may perform downscaling of the pixel blocks to match their size with the block coders' respective coding size. A block decoder may invert the coding operations performed by the block coders, decoding coded image data at respective pixel block sizes, then upscaling decoded image data obtained therefrom to a common pixel block size. Image reconstruction may synthesize a resultant image from the decode pixel block data output by the decoders. Quality enhancements may be added by neural network processing systems that have been trained to other segmented images.

公开(公告)号：US10205967B2

公开(公告)日：2019-02-12

申请号：US15070620

申请日：2016-03-15

Applicant: Apple Inc.

Inventor： Hao Pan ,  Yingjun Bai ,  Xuemei Zhang ,  Haitao Guo ,  Munehiro Nakazato ,  Xiaohua Yang

IPC: H04N19/86 ,  H04N19/12 ,  H04N19/156 ,  H04N19/186 ,  H04N19/44

Abstract: This disclosure relates to a wide gamut encoder capable of receiving a wide gamut color image in accordance with a wide gamut standard. The encoder can encode one or more wide gamut color image pixel values into portions of narrow gamut encoding elements for transmission to a video encoder. The encoder can implement an advanced extended YCC format that is backward compatible with a P3 color gamut.