公开(公告)号：US20130259130A1

公开(公告)日：2013-10-03

申请号：US13830484

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N7/36

CPC classification number: H04N19/503 ,  H04N19/463 ,  H04N19/577 ,  H04N19/70

Abstract: The techniques are generally related to the coding of weighted prediction parameters. A video coder may determine the weighted prediction parameters for a reference picture list based on coded weighted prediction parameters for another reference picture list. Examples of the reference picture list include reference picture lists constructed for coding purposes, including a combined reference picture list.

Abstract translation: 这些技术通常与加权预测参数的编码有关。 视频编码器可以基于另一参考图片列表的编码加权预测参数来确定参考图片列表的加权预测参数。 参考图片列表的示例包括为编码目的而构造的参考图片列表，包括组合的参考图片列表。

公开(公告)号：US20130101035A1

公开(公告)日：2013-04-25

申请号：US13658453

申请日：2012-10-23

Applicant: Qualcomm Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N7/32 ,  H04N7/26

CPC classification number: H04N19/436 ,  H04N19/17 ,  H04N19/174 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/895

Abstract: Techniques described herein for coding video data include techniques for coding pictures partitioned into tiles, in which each of the plurality of tiles in a picture is assigned to one of a plurality of tile groups. One example method for coding video data comprising a picture that is partitioned into a plurality tiles comprises coding video data in a bitstream, and coding, in the bitstream, information that indicates one of a plurality of tile groups to which each of the plurality of tiles is assigned. The techniques for grouping tiles described herein may facilitate improved parallel processing for both encoding and decoding of video bitstreams, improved error resilience, and more flexible region of interest (ROI) coding.

Abstract translation: 本文描述的用于编码视频数据的技术包括用于对分割成瓦片的图像进行编码的技术，其中将图片中的多个瓦片中的每一个分配给多个瓦片组中的一个。 用于编码视频数据的一个示例性方法包括分割成多个片的图像包括：对比特流中的视频数据进行编码，以及在比特流中编码指示多个瓦片组中的每一个的多个瓦片组之一的信息 被分配。 用于分组的瓦片的技术可以促进对视频比特流的编码和解码的改进的并行处理，改善的错误弹性以及更灵活的感兴趣区域（ROI）编码。

公开(公告)号：US12137217B2

公开(公告)日：2024-11-05

申请号：US18331762

申请日：2023-06-08

Applicant: QUALCOMM Incorporated

Inventor： Sungwon Lee ,  Wei-Jung Chien ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban ,  Jianle Chen ,  Yi-Wen Chen ,  Marta Karczewicz

IPC: H04N19/114 ,  H04N19/107 ,  H04N19/159 ,  H04N19/187 ,  H04N19/31 ,  H04N19/70

Abstract: A device for encoding video data includes a memory configured to store video data, and a video encoder implemented in circuitry and configured to encode a future picture of the video data having a first display order position, the future picture being included in an intra period (IP) of the video data, the IP comprising a plurality of groups of pictures (GOPs), and after encoding the future picture, encode a picture of an ordinal first GOP of the plurality of GOPs using the future picture as a reference picture, each picture of the ordinal first GOP having display order positions earlier than the first display order position. Encoding the future picture in this manner may result in encoding performance improvements with minimal increases in encoding and decoding complexity.

公开(公告)号：US20240357114A1

公开(公告)日：2024-10-24

申请号：US18633239

申请日：2024-04-11

Applicant: QUALCOMM Incorporated

Inventor： Pavel Nikitin ,  Muhammed Zeyd Coban ,  Bappaditya Ray ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

CPC classification number: H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

Abstract: An example device for coding (encoding and decoding) video data includes: a memory configured to store video data; and a processing system comprising one or more processors implemented in circuitry, the processing system being configured to: determine a context for context-based coding a current transform coefficient of a current block of video data according to previously coded transform coefficients, the previously coded transform coefficients being a sequence of immediately preceding transform coefficients to the current transform coefficient in scan order; and context-based code the current transform coefficient using the determined context.

公开(公告)号：US20240348828A1

公开(公告)日：2024-10-17

申请号：US18631415

申请日：2024-04-10

Applicant: QUALCOMM Incorporated

Inventor： Patrick Garus ,  Muhammed Zeyd Coban ,  Bappaditya Ray ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/625 ,  H04N19/70

CPC classification number: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/625 ,  H04N19/70

Abstract: A method of decoding video data includes receiving a block of video data encoded using an intra block copy (IBC) mode or an intra template matching prediction (TMP) mode, determining a pair of transforms, from among a plurality of pairs of transforms, for decoding the block using a multiple transform selection (MTS) process, and decoding the block using the pair of transforms.

公开(公告)号：US20240146994A1

公开(公告)日：2024-05-02

申请号：US18329994

申请日：2023-06-06

Applicant: QUALCOMM Incorporated

Inventor： Yong He ,  Muhammed Zeyd Coban ,  Prashanth Haridas Hande ,  Imed Bouazizi ,  Nikolai Konrad Leung

IPC: H04N21/435 ,  H04N19/169 ,  H04N19/70 ,  H04N21/6437

CPC classification number: H04N21/435 ,  H04N19/188 ,  H04N19/70 ,  H04N21/6437

Abstract: An example device for retrieving media data includes a memory; and a processing system comprising one or more processors implemented in circuitry, the processing system being configured to: receive a packet including a packet header and a payload including at least a portion of a frame of video data, the packet header being separate from the payload; extract, from the packet header, a video frame identifier for the frame of video data; and process the payload according to the video frame identifier.

公开(公告)号：US20240015312A1

公开(公告)日：2024-01-11

申请号：US18331674

申请日：2023-06-08

Applicant: QUALCOMM Incorporated

Inventor： Hongtao Wang ,  Samuel James Eadie ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/186 ,  H04N19/70 ,  H04N19/42 ,  H04N19/176 ,  H04N19/80 ,  H04N19/124

CPC classification number: H04N19/186 ,  H04N19/70 ,  H04N19/42 ,  H04N19/176 ,  H04N19/80 ,  H04N19/124

Abstract: A method of processing video data includes receiving a syntax element that defines a filtering mode for a neural network (NN) model for both a first color component and a second color component, applying an instance of the NN model, in the defined filtering mode, to a first block of the first color component to generate a first filtered block, and storing the first filtered block for a coding unit (CU).

公开(公告)号：US20230412844A1

公开(公告)日：2023-12-21

申请号：US18321372

申请日：2023-05-22

Applicant: QUALCOMM Incorporated

Inventor： Alican Nalci ,  Hilmi Enes Egilmez ,  Vadim Seregin ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/645 ,  H04N19/18 ,  H04N19/124 ,  H04N19/70 ,  H04N19/186 ,  H04N19/176

CPC classification number: H04N19/645 ,  H04N19/18 ,  H04N19/176 ,  H04N19/70 ,  H04N19/186 ,  H04N19/124

Abstract: A video decoder determines, based on a block size of a current block and a low-frequency non-separable transform (LFNST) syntax element, a zero-out pattern of normatively defined zero-coefficients. The LFNST syntax element is signaled at a transform unit (TU) level. Additionally, the video decoder determines transform coefficients of the current block. The transform coefficients of the current block include transform coefficients in an LFNST region of the current block and transform coefficients outside the LFNST region of the current block. As part of determining the transform coefficients of the current block, the video decoder applies an inverse LFNST to determine values of one or more transform coefficients in the LFNST region of the current block. The video decoder also determines that transform coefficients of the current block in a region of the current block defined by the zero-out pattern are equal to 0.

公开(公告)号：US11825073B2

公开(公告)日：2023-11-21

申请号：US17205578

申请日：2021-03-18

Applicant: QUALCOMM Incorporated

Inventor： Yong He ,  Vadim Seregin ,  Muhammed Zeyd Coban ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: H04N19/70 ,  H04N19/105 ,  H04N5/40 ,  H04N19/169 ,  H04N19/176 ,  H04N19/172

CPC classification number: H04N19/105 ,  H04N5/40 ,  H04N19/172 ,  H04N19/176 ,  H04N19/188 ,  H04N19/70

Abstract: A video encoder maintains a first reference picture list; maintains a second reference picture list; determines that a picture is an instantaneous decoding refresh (IDR) picture; determines that reference picture list syntax elements are present in a slice header for the IDR picture; and in response to determining that the picture is the IDR picture and that the reference picture list syntax elements are present in the slice header for the IDR picture, updates the first reference picture list and the second reference picture list such that no picture in the first reference picture list and no picture in the second reference picture list precedes, in output order or decoding order, any preceding instant random access point (IRAP) picture in decoding order.

公开(公告)号：US11785205B2

公开(公告)日：2023-10-10

申请号：US17128767

申请日：2020-12-21

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban

IPC: H04N19/433 ,  H04N19/105 ,  H04N19/44 ,  H04N19/172 ,  H04N19/139 ,  H04N19/30

CPC classification number: H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/30 ,  H04N19/44

Abstract: A video decoder for decoding multi-layer video data can be configured to maintain a decoded picture buffer (DPB) for storing reference pictures for a plurality of layers, wherein the plurality of layers comprise at least a first layer and a second layer; prior to decoding a current picture of an access unit of the first layer, perform a picture output and removal process on the DPB, wherein to perform the picture output and removal process on the DPB, the one or more processors are further configured to remove from the DPB only decoded pictures that belong to the first layer; and after removing a last decoding unit of the current picture from a coded picture buffer (CPB), perform a picture bumping process across all layers of the DPB.