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.

公开(公告)号：US20240005518A1

公开(公告)日：2024-01-04

申请号：US17853422

申请日：2022-06-29

Applicant: QUALCOMM Incorporated

Inventor： Nitin BANDWAR ,  Pia ZOBEL ,  Roee HARDOON ,  Sungwon LEE ,  Tauseef KAZI ,  Bing HAN

IPC: G06T7/207 ,  G06T7/215

CPC classification number: G06T7/207 ,  G06T7/215

Abstract: Systems and techniques are provided for conserving resources when performing motion estimation. An example process can include determining, based on an input image and a reference image, motion vectors identifying motion between the input image and the reference image; determining whether the motion indicated by the motion vectors is below a first threshold; based on a determination that the motion indicated by the motion vectors is below the first threshold, refraining from determining a local motion between the input image and the reference image; determining a transform matrix based on the motion vectors and without using a local motion between the input image and the reference image; and adjusting the input image based on the transform matrix.

公开(公告)号：US20180098066A1

公开(公告)日：2018-04-05

申请号：US15724155

申请日：2017-10-03

Applicant: QUALCOMM Incorporated

Inventor： Sungwon LEE ,  Wei-Jung CHIEN ,  Kai ZHANG ,  Jianle CHEN ,  Marta KARCZEWICZ

IPC: H04N19/117 ,  H04N19/139 ,  H04N19/82 ,  H04N19/184 ,  H04N19/159 ,  H04N19/513 ,  H04N19/59

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/463 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/82

Abstract: Systems, methods, and apparatus are provided for adaptively switching interpolation filters during the encoding of video data or the decoding of a video bitstream. In various implementations, a set of interpolation filters can be defined and made available to coding device. The coding device can select an interpolation filter for a given coding unit. The interpolation filter can be selected based on, for example, the coding level of the coding unit, among other things. In some examples, signaling of the selected interpolation filter can be simplified by selecting a subset of the set of interpolation filters for a given coding situation. An index indicating an interpolation filter from the subset can then be signaled. Alternatively, a decoder can derive an identity of the interpolation filter from data provided by a bitstream, in which case the index need not be explicitly signaled in the bitstream.