公开(公告)号：US09179151B2

公开(公告)日：2015-11-03

申请号：US14057554

申请日：2013-10-18

Applicant: Google Inc.

Inventor： Ronald Sebastiaan Bultje ,  Debargha Mukherjee ,  Yaowu Xu

IPC: G06K9/36 ,  G06K9/46 ,  H04N19/13 ,  H04N19/129 ,  H04N19/91

CPC classification number: H04N19/13 ,  H04N19/129 ,  H04N19/91

Abstract: Encoding and decoding using spatial proximity context entropy coding may include identifying a plurality of transform coefficients for a current block of a current frame of a video stream. The plurality of transform coefficients may be ordered based on a scan order. A current transform coefficient may be identified from the plurality of transform coefficients. A plurality of context coefficients may be identified from the plurality of transform coefficients. Each context coefficient may be spatially proximate to the current transform coefficient and may be available for entropy coding the current transform coefficient. An entropy coding probability for the current transform coefficient may be identified based on the scan order and the plurality of context coefficients. The current transform coefficient may be entropy coded based on the entropy coding probability. The entropy coded current transform coefficient may be included in an output bitstream, which may be stored or transmitted.

Abstract translation: 使用空间邻近度上下文熵编码的编码和解码可以包括识别视频流的当前帧的当前块的多个变换系数。 可以基于扫描顺序对多个变换系数进行排序。 可以从多个变换系数中识别当前变换系数。 可以从多个变换系数中识别多个上下文系数。 每个上下文系数可以在空间上接近当前变换系数，并且可用于对当前变换系数进行熵编码。 可以基于扫描顺序和多个上下文系数来识别当前变换系数的熵编码概率。 可以基于熵编码概率对当前变换系数进行熵编码。 熵编码的电流变换系数可以包括在可以存储或发送的输出比特流中。

公开(公告)号：US20150036740A1

公开(公告)日：2015-02-05

申请号：US14516349

申请日：2014-10-16

Applicant: Google Inc.

Inventor： Lei Yang ,  Debargha Mukherjee

IPC: H04N19/169

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/107 ,  H04N19/115 ,  H04N19/147 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/156 ,  H04N19/1887 ,  H04N19/192 ,  H04N19/194 ,  H04N19/40

Abstract: A system and method provide a video description length (VDL) guided constant quality video encoding strategy with bitrate constraint and a video coding system for optimizing encoding bitrate, distortion and complexity of an input video. The method obtains an overall VDL, temporal VDL and spatial VDL of the input video and compares the overall VDL, temporal VDL and spatial VDL of the input video with a reference VDL, temporal VDL and spatial VDL. Based on the comparison, the method adjusts the encoding bitrate, the overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video and encodes the input video with the adjusted encoding bitrate, overall encoding complexity, temporal encoding complexity and spatial encoding complexity of the input video.

Abstract translation: 系统和方法提供具有比特率约束的视频描述长度（VDL）导向恒定质量视频编码策略和用于优化输入视频的编码比特率，失真和复杂度的视频编码系统。 该方法获得输入视频的整体VDL，时间VDL和空间VDL，并将输入视频的整体VDL，时间VDL和空间VDL与参考VDL，时间VDL和空间VDL进行比较。 基于比较，该方法调整输入视频的编码比特率，整体编码复杂度，时间编码复杂度和空间编码复杂度，并对经调整的编码比特率，整体编码复杂度，时间编码复杂度和空间编码复杂度的输入视频进行编码 的输入视频。

公开(公告)号：US20190037197A1

公开(公告)日：2019-01-31

申请号：US15295944

申请日：2016-10-17

Applicant: Google Inc.

Inventor： Debargha Mukherjee ,  Chen Wu ,  Meng Wang

IPC: H04N13/02 ,  G06T7/40 ,  G06T7/00 ,  H04N13/00

Abstract: A two-dimensional image to be converted to a first three-dimensional image may be received. A second three-dimensional image that is visually similar to the two-dimensional image that is to be converted may be identified. A feature-to-depth mapping function may be computed for the first three-dimensional image by using an approximate depth map of the second three-dimensional image that is visually similar to the two-dimensional image that is to be converted. The feature-to-depth mapping function may be applied to a plurality of pixels of the two-dimensional image to determine a depth value for the plurality of pixels of the two-dimensional image. The first three-dimensional image may be generated based on the depth values for the plurality of pixels of the two-dimensional image.

公开(公告)号：US10104398B2

公开(公告)日：2018-10-16

申请号：US15700238

申请日：2017-09-11

Applicant: GOOGLE INC.

Inventor： Debargha Mukherjee ,  Yue Chen ,  Shunyao Li

IPC: H04N19/61 ,  H04N19/59 ,  H04N19/176 ,  H04N19/122 ,  H04N19/583 ,  H04N19/184

Abstract: Super-transform coding may include identifying a plurality of sub-blocks for prediction coding a current block, determining whether to encode the current block using a super-transform, and super-prediction coding the current block. Super-prediction coding may include generating a super-prediction block for the current block by generating a prediction block for each unpartitioned sub-block of the current block, generating a super-prediction block for each partitioned sub-block of the current block by super-prediction coding the sub-block, and including the prediction blocks and super-prediction blocks for the sub-blocks in a super-prediction block for the current block. Including the prediction blocks and super-prediction blocks for the sub-blocks in a super-prediction block for the current block may include filtering at least a portion of each prediction block and each super-prediction block based on a spatially adjacent prediction block. Super-transform coding may include transforming the super-prediction block for the current block using a corresponding super-transform.

公开(公告)号：US20180270502A1

公开(公告)日：2018-09-20

申请号：US15458403

申请日：2017-03-14

Applicant: Google Inc.

Inventor： Debargha Mukherjee ,  Yaowu Xu ,  James Bankoski ,  Yuxin Liu

IPC: H04N19/53 ,  H04N19/513

CPC classification number: H04N19/53 ,  H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/513 ,  H04N19/573

Abstract: Coding a current block using multi-level compound predictor is disclosed. A method includes generating a first compound predictor by combining at least two predictor blocks for the current block, generating a second predictor for the current block, and combining the first compound predictor and the second predictor to obtain a prediction block for encoding or decoding the current block. An indicator may be sent from the encoder to the decoder to indicate when multi-level compound prediction is used to encode a block.

公开(公告)号：US10009622B1

公开(公告)日：2018-06-26

申请号：US14969675

申请日：2015-12-15

Applicant: Google Inc.

Inventor： Debargha Mukherjee ,  Shunyao Li ,  Peyman Milanfar

IPC: H04N7/12 ,  H04N19/52 ,  H04N19/124 ,  H04N19/82 ,  H04N19/44 ,  H04N19/59 ,  H04N19/61 ,  H04N19/91 ,  H04N19/86 ,  H04N19/107 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/52 ,  H04N19/107 ,  H04N19/117 ,  H04N19/124 ,  H04N19/132 ,  H04N19/146 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/59 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: A method for encoding a video signal using a computing device, the video signal having a plurality of frames, each frame having a plurality of blocks, and each block having a plurality of pixels. The method includes generating a residual block from an original block of a current frame and a prediction block, degrading the residual block to decrease a bit-cost for encoding the residual block, and encoding the residual block into an encoded residual block.

公开(公告)号：US09998753B1

公开(公告)日：2018-06-12

申请号：US15406810

申请日：2017-01-16

Applicant: GOOGLE INC.

Inventor： Debargha Mukherjee ,  Yongzhe Wang ,  Jingning Han

IPC: H04N19/50 ,  H04N19/52 ,  H04N19/55 ,  H04N19/176 ,  H04N19/593 ,  H04N19/159 ,  H04N19/13 ,  H04N19/117

CPC classification number: H04N19/52 ,  H04N19/117 ,  H04N19/12 ,  H04N19/13 ,  H04N19/134 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/593 ,  H04N19/649

Abstract: Encoding and decoding using prediction dependent transform coding are provided. Encoding and decoding using prediction dependent transform coding may include identifying a current input block from a current input frame from an input video stream, generating a prediction block for the current input block, generating a residual block based on a difference between the current input block and the prediction block, generating, by a processor in response to instructions stored on a non-transitory computer readable medium, an encoded block by encoding the residual block based on the prediction block using the using prediction dependent transform coding, including the encoded block in an output bitstream, and outputting or storing the output bitstream.

公开(公告)号：US09986236B1

公开(公告)日：2018-05-29

申请号：US14084252

申请日：2013-11-19

Applicant: GOOGLE INC.

Inventor： Debargha Mukherjee ,  Jim Bankoski

IPC: H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/61 ,  H04N19/126 ,  H04N19/91

CPC classification number: H04N19/00696 ,  H04N19/00951 ,  H04N19/105 ,  H04N19/119 ,  H04N19/126 ,  H04N19/50 ,  H04N19/51 ,  H04N19/52 ,  H04N19/573 ,  H04N19/61

Abstract: An apparatus (e.g., a computer device) includes a video coding system. The video coding system includes an encoder. The encoder is configured to partition a block of video data into a first partition and a second partition, the first partition and the second partition being divided by a border that is at an angle to an orientation of a row or column of pixels, determine a first motion vector for the first partition and a second motion vector for the second partition, determine a first set of predictor values based on the first motion vector and a second set of predictor values based on the second motion vector, and combine the first set of predictor values and the second set of predictor values into an overall set of predictor values based on a weighting algorithm.

公开(公告)号：US20180131968A1

公开(公告)日：2018-05-10

申请号：US15719918

申请日：2017-09-29

Applicant: GOOGLE INC.

Inventor： Debargha Mukherjee

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/136

Abstract: Restoring a degraded frame resulting from reconstruction of a source frame is described. A method includes generating, using first restoration parameters, a first guide tile for a degraded tile of the degraded frame, determining a projection parameter for a projection operation, and encoding, in an encoded bitstream, the first restoration parameters and the projection parameter. The projection operation relates differences between a source tile of the source frame and the degraded tile to differences between the first guide tile and the degraded tile.

公开(公告)号：US20170353733A1

公开(公告)日：2017-12-07

申请号：US15173881

申请日：2016-06-06

Applicant: GOOGLE INC.

Inventor： Debargha Mukherjee ,  Yue Chen

IPC: H04N19/50 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44

CPC classification number: H04N19/50 ,  G06T7/20 ,  G06T9/00 ,  H04N19/107 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/583

Abstract: Decoding a current block of an encoded video stream may include generating a base prediction block for the current block based on current prediction parameters associated with the current block, identifying adjacent prediction parameters used for decoding a previously decoded adjacent block that is adjacent to the current block, and determining an overlap region within the current block and adjacent to the adjacent block. The overlap region has a size being determined as a function of a difference between the first prediction parameters and the adjacent prediction parameters. For each pixel within the overlap region, an overlapped prediction of a pixel value may be generated as a function of the base prediction and a prediction based on the adjacent prediction parameters.