公开(公告)号：US09819949B2

公开(公告)日：2017-11-14

申请号：US13329093

申请日：2011-12-16

申请人： Mei-Hsuan Lu ,  Yongjun Wu ,  Ming-Chieh Lee ,  Gary J. Sullivan

发明人： Mei-Hsuan Lu ,  Yongjun Wu ,  Ming-Chieh Lee ,  Gary J. Sullivan

IPC分类号： H04N7/50 ,  H04N7/26 ,  H04N7/12 ,  H04N19/42 ,  H04N19/30 ,  H04N19/44 ,  H04N19/423 ,  H04N19/436

CPC分类号： H04N19/42 ,  H04N19/30 ,  H04N19/423 ,  H04N19/436 ,  H04N19/44

摘要： In various respects, hardware-accelerated decoding is adapted for decoding of video that has been encoded using scalable video coding. For example, for a given picture to be decoded, a host decoder determines whether a corresponding base picture will be stored for use as a reference picture. If so, the host decoder directs decoding with an accelerator such that the some of the same decoding operations can be used for the given picture and the reference base picture. Or, as another example, the host decoder groups encoded data associated with a given layer representation in buffers. The host decoder provides the encoded data for the layer to the accelerator. The host decoder repeats the process layer-after-layer in the order that layers appear in the bitstream, according to a defined call pattern for an acceleration interface, which helps the accelerator determine the layers with which buffers are associated.

公开(公告)号：US20170311003A1

公开(公告)日：2017-10-26

申请号：US15490920

申请日：2017-04-19

申请人： MEDIATEK INC.

发明人： Tung-Hsing Wu ,  Li-Heng Chen ,  Han-Liang Chou

IPC分类号： H04N19/91 ,  H04N19/124 ,  H04N19/182 ,  H04N19/44

CPC分类号： H04N19/91 ,  H04N19/124 ,  H04N19/182 ,  H04N19/436 ,  H04N19/44

摘要： An entropy encoding method includes following steps: receiving symbols of a pixel group; entropy encoding data derived from the symbols of the pixel group to generate a first bitstream portion and a second bitstream portion, wherein the first bitstream portion includes encoded magnitude data of the symbols of the pixel group, and the second bitstream portion includes encoded sign data of at least a portion of the symbols of the pixel group; and generating a bitstream segment of the pixel group by combining at least the first bitstream portion and the second bitstream portion. The pixel group includes a plurality of pixels, and the symbols of the pixel group have a plurality of symbol values of the pixels, respectively. When a first symbol value has a zero magnitude value, a sign value of the first symbol value is not entropy encoded into the second bitstream portion.

公开(公告)号：US20170302978A1

公开(公告)日：2017-10-19

申请号：US15638710

申请日：2017-06-30

申请人： TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

发明人： Xinghua Hu ,  Xinhai Zeng

IPC分类号： H04N21/2343 ,  H04L29/06

CPC分类号： H04N21/234345 ,  H04L65/60 ,  H04N19/436 ,  H04N21/2343

摘要： A video coding method includes: original collected video data is received from a coding requesting terminal, or a transmission video stream is received from the coding requesting terminal, the coding requesting terminal obtaining the transmission video stream by performing compression coding on the original collected video data in a first coding scheme; each video frame image of the original collected video data is divided into multiple subarea images, or each video frame image of the original collected video data obtained by decoding the transmission video stream is divided into multiple subarea images; the subarea images divided from each video frame image are transmitted to multiple coding servers, to code the subarea images in a second coding scheme and output a coded video stream; and the coded video streams output by the coding servers are merged into a target video stream.

公开(公告)号：US20170302944A1

公开(公告)日：2017-10-19

申请号：US15639259

申请日：2017-06-30

申请人： GE Video Compression, LLC

发明人： Valeri GEORGE ,  Anastasia HENKEL ,  Heiner KIRCHHOFFER ,  Detlev MARPE ,  Thomas SCHIERL

IPC分类号： H04N19/44 ,  H04N19/174 ,  H04N19/13 ,  H04N19/167 ,  H04N19/51 ,  H04N19/436

CPC分类号： H04N19/44 ,  H03M7/3071 ,  H03M7/4037 ,  H04N19/13 ,  H04N19/167 ,  H04N19/174 ,  H04N19/436 ,  H04N19/503 ,  H04N19/51 ,  H04N19/91

摘要： The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively.

公开(公告)号：US20170295378A1

公开(公告)日：2017-10-12

申请号：US15287857

申请日：2016-10-07

申请人： VIA ALLIANCE SEMICONDUCTOR CO., LTD.

发明人： HENG QUE ,  DEMING GU ,  ZHOU HONG ,  YUANFENG WANG

IPC分类号： H04N19/436 ,  H04N19/593 ,  H04N19/70 ,  H04N19/176

CPC分类号： H04N19/436 ,  H04N19/176 ,  H04N19/593

摘要： An image compression method based on JPEG-LS is presented. In the method, the M×N pixels in the source image are divided into k groups. M, N, and k are all integers larger than one. Each group corresponds to a plurality of pixels among the M×N pixels. The decorrelation procedure and the context modeling procedure are performed for each of the plurality of pixels in the ith group of the k groups. The compensation look-up table is not refreshed until all pixels in the ith group are performed with the decorrelation procedure and the context modeling procedure.

公开(公告)号：US09762926B2

公开(公告)日：2017-09-12

申请号：US14267245

申请日：2014-05-01

申请人： SONY CORPORATION

发明人： Naohiko Kotaka

IPC分类号： H04N19/527 ,  H04N19/436

CPC分类号： H04N19/527 ,  H04N19/436

摘要： An image processing device includes: a division unit that divides each picture of image data into multiple arrangements; multiple coding units, each of which codes the pictures in the mutually-different arrangements that result from the division by the division unit; and a composition unit that composites streams in the arrangements, which are obtained by each of the multiple coding units coding each picture, in which when coding a current picture, the coding unit performs inter-prediction using a first global motion vector (GMV) that is derived from motion information on a portion whose processing is finished, of a picture that precedes the current picture in the image data that is present before being divided by the division unit and whose processing is in progress in a different coding unit.

公开(公告)号：US09756360B2

公开(公告)日：2017-09-05

申请号：US13551458

申请日：2012-07-17

申请人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz ,  Yunfei Zheng ,  Xianglin Wang

发明人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz ,  Yunfei Zheng ,  Xianglin Wang

IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/625 ,  H04N19/159 ,  H04N19/176 ,  H04N19/147 ,  H04N19/129 ,  H04N19/61 ,  H04N19/436

CPC分类号： H04N19/625 ,  H04N19/129 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/436 ,  H04N19/61

摘要： In an example, aspects of this disclosure relate to a method for decoding transform coefficients in a video decoding process that includes decoding a one-dimensional array of transform coefficients, and performing a scan on the one-dimensional array of transform coefficients according to a sub-block scan order and a coefficient scan order to produce a block of transform coefficients, where the sub-block scan order comprises an order in which each sub-block of a plurality of sub-blocks within the block is scanned, and where the coefficient scan order comprises an order in which the transform coefficients corresponding to each sub-block of the plurality of sub-blocks are scanned.

公开(公告)号：US09756351B2

公开(公告)日：2017-09-05

申请号：US15257550

申请日：2016-09-06

申请人： Texas Instruments Incorporated

发明人： Mihir Mody

IPC分类号： H04N19/436 ,  H04N19/119 ,  H04N19/156 ,  H04N19/174 ,  H04N19/423 ,  H04N19/82

CPC分类号： H04N19/436 ,  H04N19/119 ,  H04N19/156 ,  H04N19/174 ,  H04N19/423 ,  H04N19/82

摘要： The disclosure provides a video encoder. The video encoder receives a frame and divides the frame into a plurality of tiles. The video encoder includes a plurality of video processing engines communicatively coupled with each other. Each video processing engine receives a tile of the plurality of tiles. A height of each tile is equal to a height of the frame and each tile comprises a plurality of rows. The plurality of video processing engines includes a first and a second video processing engine. The second video processing engine being initiated after the first video processing engines processes M rows of the plurality of rows of the tile, where M is an integer.

公开(公告)号：US20170244968A1

公开(公告)日：2017-08-24

申请号：US15589781

申请日：2017-05-08

申请人： Microsoft Technology Licensing, LLC

发明人： Dipankar Ray ,  Weidong Zhao

IPC分类号： H04N19/13 ,  H04N19/46 ,  H04N19/15 ,  H04N19/51 ,  H04N19/124 ,  H04N19/159 ,  H04N19/82 ,  H04N19/436 ,  H04N19/31 ,  H04N19/61

CPC分类号： H04N19/13 ,  G06T1/20 ,  H04N19/105 ,  H04N19/112 ,  H04N19/124 ,  H04N19/137 ,  H04N19/15 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/31 ,  H04N19/42 ,  H04N19/43 ,  H04N19/436 ,  H04N19/44 ,  H04N19/46 ,  H04N19/51 ,  H04N19/593 ,  H04N19/61 ,  H04N19/82 ,  H04N19/89 ,  H04N19/91

摘要： Video decoding innovations for multithreading implementations and graphics processor unit (“GPU”) implementations are described. For example, for multithreaded decoding, a decoder uses innovations in the areas of layered data structures, picture extent discovery, a picture command queue, and/or task scheduling for multithreading. Or, for a GPU implementation, a decoder uses innovations in the areas of inverse transforms, inverse quantization, fractional interpolation, intra prediction using waves, loop filtering using waves, memory usage and/or performance-adaptive loop filtering. Innovations are also described in the areas of error handling and recovery, determination of neighbor availability for operations such as context modeling and intra prediction, CABAC decoding, computation of collocated information for direct mode macroblocks in B slices, reduction of memory consumption, implementation of trick play modes, and picture dropping for quality adjustment.

公开(公告)号：US09743088B2

公开(公告)日：2017-08-22

申请号：US15337196

申请日：2016-10-28

申请人： FUJITSU LIMITED

发明人： Satoshi Shimada ,  Kimihiko Kazui ,  Junpei Koyama ,  Akira Nakagawa

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/124 ,  H04N19/593 ,  H04N19/463 ,  H04N19/44 ,  H04N19/436 ,  H04N19/50 ,  H04N19/60 ,  H04N19/91 ,  H04N19/105 ,  H04N19/513 ,  H04N19/129 ,  H04N19/156 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182

CPC分类号： H04N19/124 ,  H04N19/105 ,  H04N19/117 ,  H04N19/129 ,  H04N19/156 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/436 ,  H04N19/44 ,  H04N19/463 ,  H04N19/50 ,  H04N19/513 ,  H04N19/593 ,  H04N19/60 ,  H04N19/61 ,  H04N19/86 ,  H04N19/91

摘要： A video decoder decoding an encoded stream includes a parallel entropy decoding part to entropy decode the stream of blocks in block lines in parallel, a parallel QP prediction part to compute prediction values of the blocks in the block lines in parallel, and a parallel decoding processing part to generate decoded pixels of the blocks in the block lines in parallel, the decoded pixel being obtained utilizing data decoded by the parallel entropy decoding part and the prediction value. When performing computing processing in parallel per unit of N block lines, the processing is performed on a processing block in a (K−1)th block line preceding a processing block in a Kth block line by at least one block in a horizontal position to compute the prediction value of the processing block by referring to a block already processed corresponding to the processing block.