公开(公告)号：US20180007358A1

公开(公告)日：2018-01-04

申请号：US15703124

申请日：2017-09-13

申请人： Godo Kaisha IP Bridge 1

发明人： Satoshi KONDO ,  Shinya KADONO ,  Makoto HAGAI ,  Kiyofumi ABE

IPC分类号： H04N19/129 ,  H04N19/182 ,  H04N19/176

CPC分类号： H04N19/129 ,  H03M7/40 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/196 ,  H04N19/60 ,  H04N19/61

摘要： A variable length coding method is comprised of: a coefficient value scanning step in which an RL sequence generation unit, a reordering unit, and a binarization unit scan coefficient values within a block in a predetermined scanning order starting at a higher-frequency component toward a lower-frequency component; and an arithmetic coding step in which an arithmetic coding unit and a table storage unit perform arithmetic coding on the absolute values of the coefficient values according to the scanning order used in the coefficient value scanning step, by switching between probability tables for use, wherein, in the arithmetic coding step, a probability table to be used is switched to another probability table in one direction, when the arithmetic-coded absolute values of the coefficient values include an absolute value exceeding a predetermined threshold value.

公开(公告)号：US09843805B2

公开(公告)日：2017-12-12

申请号：US15369429

申请日：2016-12-05

申请人： Velos Media, LLC

发明人： Kazushi Sato

IPC分类号： G06K9/00 ,  H04N19/124 ,  G06T9/00 ,  H04N19/176 ,  H04N19/70 ,  H04N19/172 ,  H04N19/122 ,  H04N19/61 ,  H04N19/463 ,  H04N19/126 ,  H04N19/115 ,  H04N19/129 ,  H04N7/52 ,  H04N19/615 ,  H04N19/177 ,  H04N19/82 ,  H04N19/18

CPC分类号： H04N19/124 ,  G06T9/007 ,  H04N7/52 ,  H04N19/115 ,  H04N19/122 ,  H04N19/126 ,  H04N19/129 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/18 ,  H04N19/463 ,  H04N19/61 ,  H04N19/615 ,  H04N19/70 ,  H04N19/82

摘要： Provided is an image processing device including a selection section configured to select, from a plurality of transform units with different sizes, a transform unit used for inverse orthogonal transformation of image data to be decoded, a generation section configured to generate, from a first quantization matrix corresponding to a transform unit for a first size, a second quantization matrix corresponding to a transform unit for a second size from a first quantization matrix corresponding to a transform unit for a first size, and an inverse quantization section configured to inversely quantize transform coefficient data for the image data using the second quantization matrix generated by the generation section when the selection section selects the transform unit for the second size.

公开(公告)号：US09838697B2

公开(公告)日：2017-12-05

申请号：US14749561

申请日：2015-06-24

申请人： QUALCOMM Incorporated

发明人： Ye-Kui Wang ,  Fnu Hendry ,  Adarsh Krishnan Ramasubramonian

IPC分类号： H04N19/70 ,  H04N19/40 ,  H04N19/129 ,  H04N19/30 ,  H04N19/174 ,  H04N19/187 ,  H04N19/423 ,  H04N19/44 ,  H04N19/513 ,  H04N19/196

CPC分类号： H04N19/174 ,  H04N19/129 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/40 ,  H04N19/423 ,  H04N19/44 ,  H04N19/513 ,  H04N19/70

摘要： A device for decoding video data includes a memory configured to store at least a portion of a bitstream of multi-layer video data and one or more processors configured to receive a first access unit delimiter (AUD) network abstraction layer (NAL) unit for a first access unit, wherein a layer identifier for the first AUD NAL unit is equal to zero; receive a second AUD NAL unit for the first access unit, wherein a layer identifier for the second AUD NAL unit is greater than zero; and decode the first access unit.

公开(公告)号：US20170347099A1

公开(公告)日：2017-11-30

申请号：US15381977

申请日：2016-12-16

申请人： Samsung Electronics Co., Ltd.

发明人： Sumit JOHAR ,  Kaushik SAHA

IPC分类号： H04N19/129 ,  H04N19/119 ,  H04N19/159 ,  H04N19/172

CPC分类号： H04N19/129 ,  H04N19/57

摘要： A method for encoding video and an encoder for encoding video, a method for decoding video and a decoder for decoding video are provided. Accordingly, in one embodiment, a method for decoding video receives a bit-stream including a plurality of data units encoded according to a scan pattern comprising at least one U-pattern, and decodes a data unit among the plurality of data units by using at least one data unit included among the plurality of data units, the at least one other data unit being decoded prior to the data unit according to the scan pattern. When the plurality of data units are included in a data cluster, the method includes scanning the plurality of data units according to the at least one U-pattern, and the scanning includes scanning and decoding the data unit, followed by scanning and decoding a neighboring data unit horizontally or vertically adjacent to the data unit.

公开(公告)号：US09832485B2

公开(公告)日：2017-11-28

申请号：US15178222

申请日：2016-06-09

申请人： QUALCOMM Incorporated

发明人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC分类号： H04N19/13 ,  H04N19/60 ,  H04N19/176 ,  H04N19/129 ,  H04N19/91 ,  H04N19/18 ,  H04N19/93 ,  H04N19/625 ,  H04N19/44 ,  H04W88/02

CPC分类号： H04N19/60 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/18 ,  H04N19/45 ,  H04N19/625 ,  H04N19/91 ,  H04N19/93 ,  H04W88/02

摘要： Disclosed are techniques for coding coefficients of a video block having a non-square shape defined by a width and a height, comprising coding one or more of x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to an associated scanning order, including coding each coordinate by determining one or more contexts used to code the coordinate based on one of the width and the height that corresponds to the coordinate, and coding the coordinate by performing a context adaptive entropy coding process based on the contexts. Also disclosed are techniques for coding information that identifies positions of non-zero coefficients within the block, including determining one or more contexts used to code the information based on one or more of the width and the height, and coding the information by performing a context adaptive entropy coding process based on the contexts.

公开(公告)号：US09819945B2

公开(公告)日：2017-11-14

申请号：US14749544

申请日：2015-06-24

申请人： QUALCOMM Incorporated

发明人： Ye-Kui Wang ,  Fnu Hendry ,  Adarsh Krishnan Ramasubramonian

IPC分类号： H04N11/02 ,  H04N19/174 ,  H04N19/70 ,  H04N19/187 ,  H04N19/423 ,  H04N19/44 ,  H04N19/129 ,  H04N19/30 ,  H04N19/513 ,  H04N19/196 ,  H04N19/40

CPC分类号： H04N19/174 ,  H04N19/129 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/40 ,  H04N19/423 ,  H04N19/44 ,  H04N19/513 ,  H04N19/70

摘要： A device for processing video data includes a memory configured to store at least a portion of a bitstream of multi-layer video data and one or more processors configured to generate a first video coding layer (VCL) network abstraction layer (NAL) unit for a first picture of an access unit, the first VCL NAL unit comprising a first slice type; generate a second VCL NAL unit for a second picture of the access unit, the second VCL NAL unit comprising a second slice type; and generate an access unit delimiter (AUD) NAL unit based on the first and second slice types.

公开(公告)号：US09819940B2

公开(公告)日：2017-11-14

申请号：US14739858

申请日：2015-06-15

申请人： QUALCOMM Incorporated

发明人： Marta Karczewicz ,  Rahul Panchal

IPC分类号： H04N7/12 ,  H04N19/13 ,  H04N19/105 ,  H04N19/46 ,  H04N19/51 ,  H04N19/129 ,  H04N19/157 ,  H04N19/18 ,  H04N19/174 ,  H04N19/184 ,  H04N19/187 ,  H04N19/34 ,  H04N19/139 ,  H04N19/159 ,  H04N19/17

CPC分类号： H04N19/13 ,  H04N19/105 ,  H04N19/129 ,  H04N19/139 ,  H04N19/157 ,  H04N19/159 ,  H04N19/17 ,  H04N19/174 ,  H04N19/18 ,  H04N19/184 ,  H04N19/187 ,  H04N19/34 ,  H04N19/46 ,  H04N19/51

摘要： A receiver receives coded coefficient values of enhancement layer video blocks. A control unit defines one or more vectors of transform coefficients for decoding of the enhancement layer blocks, and selects a prediction mode for the enhancement layer blocks based on the vectorized entropy decoding. Each of the vectors comprises one or more of the transform coefficients in a scan order having an end position indicated by a vector control signal. The control unit selects weighted prediction when the vectorized entropy decoding establishes two or more vectors, and selects non-weighted prediction when the defined vectorized entropy coding establishes a single vector. A prediction unit performs predictive decoding based on the prediction mode. An entropy decoding unit performs the vectorized entropy decoding. A scanning unit scans the enhancement layer video blocks from the vectors into two-dimensional blocks of transform coefficients, and separately entropy decodes the vectors.

公开(公告)号：US20170324969A1

公开(公告)日：2017-11-09

申请号：US15603155

申请日：2017-05-23

申请人： Sharp Laboratories of America, Inc.

发明人： Seung-Hwan KIM ,  Christopher A. SEGALL ,  Jie ZHAO

IPC分类号： H04N19/436 ,  H04N19/129 ,  H04N19/91 ,  H04N19/30

CPC分类号： H04N19/436 ,  H04N19/129 ,  H04N19/30 ,  H04N19/91

摘要： A system for decoding a video bitstream includes receiving a frame of the video that includes at least one slice and at least one tile and where each of the at least one slice and the at least one tile are not all aligned with one another.

公开(公告)号：US09807414B2

公开(公告)日：2017-10-31

申请号：US15364557

申请日：2016-11-30

申请人： M & K HOLDINGS INC.

发明人： Soo Mi Oh ,  Moonock Yang

IPC分类号： H04N19/51 ,  H04N19/52 ,  H04N19/56 ,  H04N19/61 ,  H04N19/107 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/13 ,  H04N19/159 ,  H04N19/126 ,  H04N19/129 ,  H04N19/91 ,  H04N19/105 ,  H04N19/11

CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/126 ,  H04N19/129 ,  H04N19/13 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/51 ,  H04N19/56 ,  H04N19/61 ,  H04N19/91

摘要： Provided is an apparatus for decoding a moving picture that determines a quantization step size of a previous coding block according to scan order as the quantization step size predictor of the current coding block when a quantization step size of a left coding block of a current coding block and a quantization step size of an above coding block of the current coding block are unavailable and determines an available motion vector encountered first when retrieving motion vectors in the order of motion vector of a first predetermined position and motion vector of a second predetermined position in a reference picture as a temporal motion vector candidate. Therefore, it is possible to reduce the amount of coding bits required to decode motion information and the quantization step size of the current prediction block.

公开(公告)号：US09774884B2

公开(公告)日：2017-09-26

申请号：US14708691

申请日：2015-05-11

申请人： AT&T Intellectual Property II, L.P.

发明人： Paul Glor Howard

IPC分类号： G06K9/46 ,  H04N19/60 ,  H03M7/40 ,  G06T9/00 ,  H04N19/176 ,  H04N19/46 ,  H04N19/196 ,  H04N19/129 ,  H04N19/463 ,  H04N19/91 ,  H04N19/132 ,  H04N19/14 ,  H04N19/18 ,  H04N19/10 ,  H04N19/124 ,  H04N19/44

CPC分类号： H04N19/18 ,  G06T9/00 ,  H03M7/40 ,  H03M7/4006 ,  H04N19/10 ,  H04N19/124 ,  H04N19/129 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/60 ,  H04N19/625 ,  H04N19/91 ,  H04N19/94

摘要： An exemplary embodiment of the invention relates to a method of using pattern vectors for image coding and decoding. The method comprises converting a block of image data into a set of transform coefficients, quantizing the transform coefficients such that a number of the coefficients become zero, constructing a single entity or bit vector indicating which coefficients are non-zero, coding the single entity or bit vector as an integer using an adaptive, semi-adaptive or non-adaptive arithmetic coder, coding the values of the coefficients in any fixed order, using an adaptive, semi-adaptive or non-adaptive arithmetic coder, or some other coder, and coding all coefficients except the zero coefficients. The system and method of decoding data relate to the corresponding hardware and process steps performed by the decoder when decoding a bitstream coded as described herein.