公开(公告)号：US20180014018A1

公开(公告)日：2018-01-11

申请号：US15654574

申请日：2017-07-19

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/136 ,  H04N19/42 ,  H04N19/30 ,  H04N19/186 ,  H04N19/124 ,  H04N19/70 ,  H04N19/105

CPC classification number: H04N19/136 ,  H04N19/105 ,  H04N19/124 ,  H04N19/186 ,  H04N19/30 ,  H04N19/42 ,  H04N19/70

Abstract: Techniques are described for signaling information used to generate three-dimensional (3D) color lookup tables for color gamut scalability in multi-layer video coding. A lower layer of video data may include color data in a first color gamut and a higher layer of the video data may include color data in a second color gamut. To generate inter-layer reference pictures, a video encoder and/or video decoder performs color prediction to convert the color data of a reference picture in the first color gamut to the second color gamut. The video coder may perform color prediction using a 3D lookup table. According to the techniques, a video encoder may encode partition information and/or color values of a 3D lookup table generated for color gamut scalability. A video decoder may decode the partition information and/or color values to generate the 3D lookup table in order to perform color gamut scalability.

公开(公告)号：US09848198B2

公开(公告)日：2017-12-19

申请号：US14875398

申请日：2015-10-05

Applicant: QUALCOMM Incorporated

Inventor： Wei Pu ,  Marta Karczewicz ,  Vadim Seregin ,  Feng Zou ,  Rajan Laxman Joshi ,  Joel Sole Rojals

IPC: H04B1/66 ,  H04N19/186 ,  H04N19/182 ,  H04N19/70 ,  H04N19/593

CPC classification number: H04N19/186 ,  H04N19/182 ,  H04N19/593 ,  H04N19/70

Abstract: Techniques are described where a current pixel that cannot be palette mode coded in copy above mode and is not coded in a copy index mode is palette mode coded based on a palette index of a diagonal pixel.

公开(公告)号：US09807407B2

公开(公告)日：2017-10-31

申请号：US14557049

申请日：2014-12-01

Applicant: QUALCOMM Incorporated

Inventor： Siping Tao ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/433 ,  H04N19/58 ,  H04N19/423 ,  H04N19/573 ,  H04N19/164 ,  H04N19/172 ,  H04N19/577 ,  H04N19/154 ,  H04N19/105 ,  H04N19/152 ,  H04N19/51

CPC classification number: H04N19/433 ,  H04N19/105 ,  H04N19/152 ,  H04N19/164 ,  H04N19/172 ,  H04N19/423 ,  H04N19/51 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58

Abstract: Techniques are described where a device that includes a video decoder outputs information identifying a picture to a device that includes a video encoder. The video encoder may determine pictures that could have been used to inter-prediction encode the identified picture and/or pictures following the identified picture in coding order. The video encoder may inter-prediction encode a current picture based on one or more of the determined pictures and/or the identified picture.

公开(公告)号：US09800884B2

公开(公告)日：2017-10-24

申请号：US14205006

申请日：2014-03-11

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Jianle Chen ,  Xiang Li ,  Krishnakanth Rapaka ,  Wei Pu ,  Marta Karczewicz

IPC: H04N19/597 ,  H04N19/117 ,  H04N19/136 ,  H04N19/187 ,  H04N19/42 ,  H04N19/46 ,  H04N19/132 ,  H04N19/33 ,  H04N19/59 ,  H04N19/34

CPC classification number: H04N19/439 ,  H04N19/117 ,  H04N19/132 ,  H04N19/187 ,  H04N19/33 ,  H04N19/34 ,  H04N19/46 ,  H04N19/59

Abstract: An apparatus configured to code video information comprises a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a reference layer (RL) and an enhancement layer (EL). The EL comprises an EL video unit and the RL comprises an RL video unit corresponding to the EL video unit. The processor is configured to perform upsampling and bit-depth conversion on pixel information of the RL video unit in a single combined process to determine predicted pixel information of the EL video unit, and determine the EL video unit using the predicted pixel information.

公开(公告)号：US20170289543A1

公开(公告)日：2017-10-05

申请号：US15622878

申请日：2017-06-14

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/46 ,  H04N19/61 ,  H04N19/176

CPC classification number: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

Abstract: A video coder can be configured to determine an intra-prediction mode for a block of video data, identify a most probable transform based on the intra-prediction mode determined for the block of video data, and code an indication of whether the most probable transform is a transform used to encode the block of video data. The most probable transform can be a non-square transform.

公开(公告)号：US20170272782A1

公开(公告)日：2017-09-21

申请号：US15463398

申请日：2017-03-20

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Li Zhang ,  Xin Zhao ,  Hsiao-Chiang Chuang ,  Feng Zou ,  Marta Karczewicz

IPC: H04N19/96 ,  H04N19/583

CPC classification number: H04N19/96 ,  H04N19/103 ,  H04N19/119 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/30 ,  H04N19/45 ,  H04N19/46 ,  H04N19/50 ,  H04N19/51 ,  H04N19/583 ,  H04N19/593 ,  H04N19/61 ,  H04N19/91

Abstract: An example device for decoding video data includes a video decoder configured to decode one or more syntax elements at a region-tree level of a region-tree of a tree data structure for a coding tree block (CTB) of video data, the region-tree having one or more region-tree nodes including region-tree leaf and non-leaf nodes, each of the region-tree non-leaf nodes having at least four child region-tree nodes, decode one or more syntax elements at a prediction-tree level for each of the region-tree leaf nodes of one or more prediction trees of the tree data structure for the CTB, the prediction trees each having one or more prediction-tree leaf and non-leaf nodes, each of the prediction-tree non-leaf nodes having at least two child prediction-tree nodes, each of the prediction leaf nodes defining respective coding units (CUs), and decode video data for each of the CUs.

公开(公告)号：US20170272748A1

公开(公告)日：2017-09-21

申请号：US15463428

申请日：2017-03-20

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xin Zhao ,  Amir Said ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/61 ,  H04N19/91 ,  H04N19/70 ,  H04N19/46

Abstract: A method of decoding video data comprises receiving a bitstream of encoded video data, the encoded video data representing partitioned luma blocks and partitioned chroma blocks, wherein the chroma blocks are partitioned independently of the luma blocks, determining a respective coding mode corresponding to the respective partitioned luma blocks, decoding the respective partitioned luma blocks according to the determined respective coding modes, decoding a first syntax element indicating that the respective coding modes associated with the respective partitioned luma blocks are to be used for decoding a first partitioned chroma block, wherein the first partitioned chroma block is aligned with two or more partitioned luma blocks, determining a chroma coding mode for the first partitioned chroma block according to a function of the respective coding modes of the two or more partitioned luma blocks, and decoding the first partitioned chroma block in accordance with the determined chroma coding mode.

公开(公告)号：US09756327B2

公开(公告)日：2017-09-05

申请号：US13793942

申请日：2013-03-11

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N7/26 ,  H04N7/32 ,  H04N19/126 ,  H04N19/176 ,  H04N19/117 ,  H04N19/157 ,  H04N19/86

CPC classification number: H04N19/126 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/86

Abstract: A device may include a video coder to determine an equivalent quantization parameter (QP) for a decoded block of video data using a quantization matrix for the decoded block of video data, determine deblocking parameters based on the determined equivalent QP, and deblock an edge of the decoded block based on the determined deblocking parameters. In particular, the video coder may determine equivalent QPs for two neighboring blocks defining a common edge, and deblock the common edge based on the equivalent QPs. The video coder may determine deblocking parameters, such as β and tc values, based on the equivalent QPs. The video coder may then deblock the common edge based on the deblocking parameters, e.g., determine whether to deblock the common edge, determine whether to apply a strong or a weak filter to the common edge, and determine a width (in number of pixels) for a weak filter.

公开(公告)号：US20170244966A1

公开(公告)日：2017-08-24

申请号：US15434957

申请日：2017-02-16

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Ye-Kui Wang ,  Krishnakanth Rapaka ,  Marta Karczewicz

IPC: H04N19/126 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

CPC classification number: H04N19/126 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70

Abstract: A device for coding multi-layer video data is configured to determine a picture order count (POC) value for a current picture; determine a POC value for a reference picture; determine a layer identification (ID) value for the current picture; determine a layer ID value for the reference picture; conditionally receive a flag indicating whether weighted prediction is enabled or disabled by receiving the flag in response to at least one of two conditions being true and not receive the flag in response to the two conditions being false, the two conditions being (1) the POC value of the current picture is not equal to the POC value of the reference picture, and (2) the layer ID value for the current picture is not equal to the layer ID value for the reference picture.

公开(公告)号：US20170237990A1

公开(公告)日：2017-08-17

申请号：US15585918

申请日：2017-05-03

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Jianle Chen ,  Xiang Li ,  Krishnakanth Rapaka ,  Marta Karczewicz ,  Ying Chen

IPC: H04N19/159 ,  H04N19/463 ,  H04N19/176 ,  H04N19/33

Abstract: In one embodiment, an apparatus configured to code video data includes a processor and a memory unit. The memory unit stores video data associated with a first layer having a first spatial resolution and a second layer having a second spatial resolution. The video data associated with the first layer includes at least a first layer block and first layer prediction mode information associated with the first layer block, and the first layer block includes a plurality of sub-blocks where each sub-block is associated with respective prediction mode data of the first layer prediction mode information. The processor derives the predication mode data associated with one of the plurality of sub-blocks based at least on a selection rule, upsamples the derived prediction mode data and the first layer block, and associates the upsampled prediction mode data with each upsampled sub-block of the upsampled first layer block.