公开(公告)号：US20140105289A1

公开(公告)日：2014-04-17

申请号：US14116326

申请日：2012-05-11

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Guan-Ming Su ,  Sheng Qu ,  Walter C. Gish ,  Zhen Li

IPC: H04N19/30

CPC classification number: H04N19/105 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/85 ,  H04N19/98

Abstract: In layered Visual Dynamic range (VDR) coding, inter-layer prediction requires several color-format transformations between the input VDR and Standard Dynamic Range (SDR) signals. Coding and decoding architectures are presented wherein inter-layer prediction is performed in the SDR-based color format, thus reducing computational complexity in both the encoder and the decoder, without compromising coding efficiency or coding quality.

Abstract translation: 在分层视觉动态范围（VDR）编码中，层间预测需要在输入VDR和标准动态范围（SDR）信号之间进行多种颜色格式转换。 提出了编码和解码架构，其中以基于SDR的颜色格式执行层间预测，从而降低编码器和解码器中的计算复杂度，而不损害编码效率或编码质量。

公开(公告)号：US10158835B2

公开(公告)日：2018-12-18

申请号：US15000782

申请日：2016-01-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Walter Gish ,  Zhen Li ,  Donald Pian ,  Christopher J. Vogt ,  Hyung-Suk Kim ,  David Ruhoff

IPC: H04N9/67 ,  G09G5/02 ,  H04N9/68 ,  H04N9/12 ,  G06F3/14 ,  G09G5/10

Abstract: Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.