公开(公告)号：US10382755B2

公开(公告)日：2019-08-13

申请号：US15876897

申请日：2018-01-22

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Geert Van der Auwera ,  Chengjie Tu ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N11/02 ,  H04N19/117 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

Abstract: A device for encoding video data may be configured to encode video data according to a set of sample adaptive offset (SAO) types; perform a plurality of coding passes to test a subset of the SAO types for a first block of video data, wherein the subset is smaller than the set; select from the subset of SAO types an SAO type for the first block of video data; and generate for inclusion in an encoded bitstream, information for identifying the selected SAO type for the first block.

公开(公告)号：US20180332281A1

公开(公告)日：2018-11-15

申请号：US15977590

申请日：2018-05-11

Applicant: QUALCOMM Incorporated

Inventor： Yang Yu ,  In Suk Chong ,  Xianglin Wang ,  Prasanjit Panda ,  Mayank Tiwari ,  Marta Karczewicz ,  Shashidhar Jangili

IPC: H04N19/107 ,  H04N19/124 ,  H04N19/177 ,  H04N19/91 ,  H04N19/176

CPC classification number: H04N19/107 ,  H04N19/124 ,  H04N19/176 ,  H04N19/177 ,  H04N19/91

Abstract: This disclosure describes techniques for achieve high coding efficiency by periodically encoding anchor frames with a lower Quantization Parameter (QP) to provide better prediction for the following frames. Techniques include adaptively deciding which frames are encoded with lower QP by use of the collected encoding statistics via an encoding scheme with or without rate control.

公开(公告)号：US09883187B2

公开(公告)日：2018-01-30

申请号：US14737271

申请日：2015-06-11

Applicant: QUALCOMM Incorporated

Inventor： Chengjie Tu ,  Wei-Jung Chien ,  Xianglin Wang ,  Jaehong Chon ,  In Suk Chong ,  Marta Karczewicz ,  Woo-Shik Kim ,  Xin Zhao

IPC: H04N19/103 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/119 ,  H04N19/567 ,  H04N19/174 ,  H04N19/109 ,  H04N19/157

CPC classification number: H04N19/14 ,  H04N19/109 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/174 ,  H04N19/176 ,  H04N19/567

Abstract: A video encoding device comprises a memory configured to store video data and at least one processor configured to: select one of a full rate-distortion (RD) checking scheme or a fast RD checking scheme, determine an RD cost associated with encoding a block of the video data based on the selected full RD checking scheme or fast RD checking scheme, determine a partitioning scheme for the block based on the determined RD cost, and encode the block using the determined partitioning scheme based on the determined RD cost.

公开(公告)号：US09877024B2

公开(公告)日：2018-01-23

申请号：US14856192

申请日：2015-09-16

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Geert Van der Auwera ,  Chengjie Tu ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N11/02 ,  H04N19/117 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

Abstract: A device for encoding video data may be configured to encode video data according to a set of sample adaptive offset (SAO) types; perform a plurality of coding passes to test a subset of the SAO types for a first block of video data, wherein the subset is smaller than the set; select from the subset of SAO types an SAO type for the first block of video data; and generate for inclusion in an encoded bitstream, information for identifying the selected SAO type for the first block.

公开(公告)号：US09877023B2

公开(公告)日：2018-01-23

申请号：US14592826

申请日：2015-01-08

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/61 ,  H04N19/14 ,  H04N19/182 ,  H04N19/82 ,  H04N19/42 ,  H04N19/85 ,  H04N19/96 ,  H04N19/80

CPC classification number: H04N19/117 ,  H04N7/26255 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/85 ,  H04N19/96

Abstract: A filter unit of a video encoder or video decoder can determine a first metric for a group of pixels within a block of pixels based on a comparison of a subset of the pixels in the block to other pixels in the block; determine a filter based on the first metric; and generate a filtered image by applying the filter to the group of pixels. The subset of pixels can be selected to not include pixels on the boundary of the block of pixels.

公开(公告)号：US09819936B2

公开(公告)日：2017-11-14

申请号：US15018403

申请日：2016-02-08

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/117 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/61 ,  H04N19/14 ,  H04N19/182 ,  H04N19/82 ,  H04N19/42 ,  H04N19/85 ,  H04N19/96 ,  H04N19/80

CPC classification number: H04N19/117 ,  H04N7/26255 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/85 ,  H04N19/96

Abstract: A filter unit of a video encoder or video decoder can determine a first metric for a group of pixels within a block of pixels, determine a second metric for the group of pixels, determine a filter based on the first metric and the second metric, and generate a filtered image by applying the filter to the group of pixels. The first metric and second metric can be an activity metric and a direction metric, respectively, or can be other metrics such as an edge metric, horizontal activity metric, vertical activity metric, or diagonal activity metric.

公开(公告)号：US09654782B2

公开(公告)日：2017-05-16

申请号：US14536342

申请日：2014-11-07

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Sungwon Lee ,  Cheng-Teh Hsieh ,  Xianglin Wang

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/122 ,  H04N19/139 ,  H04N19/50 ,  H04N19/103 ,  H04N19/137

CPC classification number: H04N19/176 ,  H04N19/103 ,  H04N19/105 ,  H04N19/122 ,  H04N19/137 ,  H04N19/139

Abstract: Provided are techniques for low complexity video coding. For example, a video coder may be configured to calculate a first sum of absolute difference (SAD) value between a coding unit (CU) block and a first corresponding block in a reference frame, and define branching conditions for branching of CU sizes based on the first SAD value, the branching conditions including a background condition and/or a homogeneous condition. The video coder may be configured to detect the background condition if the first SAD value of the CU block is less than a first threshold background value, and detect the homogeneous condition if a second SAD value of a sub-block of the CU block is between upper and lower homogeneous threshold values based on the first SAD value. The branching of the CU sizes may be based on detecting the background or homogeneous conditions.

公开(公告)号：US09596463B2

公开(公告)日：2017-03-14

申请号：US13773151

申请日：2013-02-21

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N19/463 ,  H04N19/40 ,  H04N19/82 ,  H04N19/91

CPC classification number: H04N19/40 ,  H04N19/463 ,  H04N19/82 ,  H04N19/91

Abstract: Techniques for coding video data include coding sample adaptive offset (SAO) offset values as part of performing a video coding process. In particular, the techniques include determining the SAO offset values according to a SAO process. The techniques further include storing a codebook defining a plurality of codes for coding different variations of SAO offset values. The techniques also include coding the SAO offset values in accordance with the codebook so as to specify the SAO offset values as one of the plurality of codes defined by the codebook.

Abstract translation: 用于编码视频数据的技术包括编码样本自适应偏移（SAO）偏移值作为执行视频编码处理的一部分。 特别地，这些技术包括根据SAO过程确定SAO偏移值。 所述技术还包括存储定义用于编码SAO偏移值的不同变化的多个代码的码本。 这些技术还包括根据码本编码SAO偏移值，以便将SAO偏移值指定为由码本定义的多个代码之一。

公开(公告)号：US20160261874A1

公开(公告)日：2016-09-08

申请号：US14856192

申请日：2015-09-16

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Geert Van der Auwera ,  Chengjie Tu ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N19/174 ,  H04N19/157 ,  H04N19/91 ,  H04N19/117 ,  H04N19/182 ,  H04N19/186

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

Abstract: A device for encoding video data may be configured to encode video data according to a set of sample adaptive offset (SAO) types; perform a plurality of coding passes to test a subset of the SAO types for a first block of video data, wherein the subset is smaller than the set; select from the subset of SAO types an SAO type for the first block of video data; and generate for inclusion in an encoded bitstream, information for identifying the selected SAO type for the first block.

Abstract translation: 用于编码视频数据的设备可以被配置为根据一组采样自适应偏移（SAO）类型对视频数据进行编码; 执行多个编码遍以测试第一视频数据块的SAO类型的子集，其中所述子集小于所述集合; 从SAO类型的子集中选择第一个视频数据块的SAO类型; 并且生成用于包括在编码比特流中，用于识别用于第一块的所选择的SAO类型的信息。

公开(公告)号：US20160261872A1

公开(公告)日：2016-09-08

申请号：US14794360

申请日：2015-07-08

Applicant: QUALCOMM Incorporated

Inventor： Xianglin Wang ,  Chengjie Tu ,  Wei-Jung Chien ,  In Suk Chong ,  Siping Tao ,  Marta Karczewicz

IPC: H04N19/17 ,  H04N19/187 ,  H04N19/44 ,  H04N19/423

CPC classification number: H04N19/187 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172 ,  H04N19/31 ,  H04N19/70

Abstract: Systems and methods for encoding and decoding video data are disclosed. The method can include signaling in syntax information a picture parameter set (PPS) indicating a first tile size partition. The method can also include storing a plurality of tile size partitions and associated PPS identifiers (PPSID) in a database. If a second tile size partition for a second frame of video data is the same as a tile size partition stored in the database, the method can include signaling the PPSID for the corresponding tile size partition. If the second tile size partition is not the same as a tile size partition stored in the database, the method can include signaling a new PPS with the second tile size partition. The system can provide an encoder and a decoder for processing the video data encoded by the method for encoding video data.

Abstract translation: 公开了用于编码和解码视频数据的系统和方法。 该方法可以包括在语法信息中发送指示第一瓦片尺寸分区的图像参数集（PPS）。 该方法还可以包括将多个瓦片大小的分区和相关联的PPS标识符（PPSID）存储在数据库中。 如果用于第二帧视频数据的第二块大小分区与存储在数据库中的块大小分区相同，则该方法可以包括为相应的块大小分区发送PPSID。 如果第二块大小分区与存储在数据库中的块大小分区不同，则该方法可以包括用第二块大小分区来发送新的PPS。 该系统可以提供编码器和解码器，用于处理由视频数据编码方法编码的视频数据。