公开(公告)号：US20170339418A1

公开(公告)日：2017-11-23

申请号：US15594207

申请日：2017-05-12

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Done BUGDAYCI SANSLI ,  Joel SOLE ROJALS ,  Dmytro RUSANOVSKYY ,  Marta KARCZEWICZ

IPC: H04N19/176 ,  H04N19/136 ,  H04N19/186 ,  H04N19/70

CPC classification number: H04N19/176 ,  H04N19/136 ,  H04N19/186 ,  H04N19/70

Abstract: Systems, methods, and computer readable media are described for processing content color volume messages. In some examples, video data is obtained. The video data can include video data obtained from a camera, encoded video data, or decoded video data. Content color volume information associated with the video data is processed. The content color volume information is indicative of the content color volume of one or more pictures of the video data. For example, the content color volume information includes a first luminance value associated with a minimum luminance of the one or more pictures, a second luminance value associated with a maximum luminance of the one or more pictures, and one or more chromaticity coordinates of one or more color primaries describing a color gamut of the one or more pictures.

公开(公告)号：US20170105014A1

公开(公告)日：2017-04-13

申请号：US15287494

申请日：2016-10-06

Applicant: QUALCOMM Incorporated

Inventor： Sungwon LEE ,  Adarsh Krishnan RAMASUBRAMONIAN ,  Dmytro RUSANOVSKYY ,  Joel SOLE ROJALS ,  Done BUGDAYCI SANSLI ,  Marta KARCZEWICZ

IPC: H04N19/30

CPC classification number: H04N19/30 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/85

Abstract: The present disclosure provides various aspects related to luma-driven chroma scaling for high dynamic range and wide color gamut contents. For example, a method of video data decoding may include obtaining video data, where the video data includes a scaled chroma component and a luma component, and where the scaled chroma component is scaled based on a chroma scaling factor that is a non-linear function of the luma component. The method may also include obtaining the chroma scaling factor for the scaled chroma component and generating a chroma component from the scaled chroma component based on the chroma scaling factor. In addition, the method may include outputting the chroma component, which may then be used for further processing.