公开(公告)号：US20190068977A1

公开(公告)日：2019-02-28

申请号：US16078193

申请日：2017-02-21

申请人： Kai ZHANG ,  Jicheng AN ,  Han HUANG

发明人： Kai ZHANG ,  Jicheng AN ,  Han HUANG

IPC分类号： H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  H04N19/186

CPC分类号： H04N19/159 ,  H04N19/11 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

摘要： A method and apparatus of Inter/Intra prediction for a chroma component performed by a video encoder or video decoder are disclosed. According to this method, a current chroma prediction block (e.g. a prediction unit, PU) is divided into multiple chroma prediction sub-blocks (e.g. sub-PUs). A corresponding luma prediction block is identified for each chroma prediction sub-block. A chroma prediction mode for each chroma prediction sub-block is determined from a luma prediction mode associated with the corresponding luma prediction block. A local chroma predictor for the current chroma prediction block is generated by applying a prediction process to the multiple chroma prediction sub-blocks using respective chroma prediction modes. In other words, the prediction process is applied at the chroma prediction sub-block level. After the local chroma predictor is derived, a coding block associated with the current chroma prediction block is encoded or decoded using information comprising the local chroma predictor.

公开(公告)号：US20180352226A1

公开(公告)日：2018-12-06

申请号：US15777417

申请日：2016-10-18

申请人： Jicheng AN ,  Kai ZHANG ,  Han HUANG

发明人： Jicheng AN ,  Kai ZHANG ,  Han HUANG

IPC分类号： H04N19/119 ,  H04N19/107 ,  H04N19/12

CPC分类号： H04N19/46 ,  H04N19/119 ,  H04N19/12 ,  H04N19/176

摘要： A method and apparatus of block partition for prediction process or transform process in video coding are disclosed. Whether a smallest allowed block size smaller than 4 is allowed is determined and information related to the decision is signalled in SPS (sequence parameter set), PPS (picture parameter set) or slice header regarding. If the smallest allowed block size smaller than 4 is allowed, the current block is partitioned into one or more sub-blocks using a block size set including the smallest allowed block size. The smallest allowed block size is 2 in one embodiment. According to another method, a threshold area is determined and transform skip mode is applied to the current block if the current block area of the current block is equal to or smaller than the threshold area.

公开(公告)号：US20170019682A1

公开(公告)日：2017-01-19

申请号：US15123882

申请日：2015-03-17

申请人： Kai ZHANG ,  Jicheng AN ,  Xianguo ZHANG ,  Han HUANG

发明人： Kai ZHANG ,  Jicheng AN ,  Xianguo ZHANG ,  Han HUANG

IPC分类号： H04N19/597 ,  H04N19/503 ,  H04N19/34 ,  H04N19/70

CPC分类号： H04N19/597 ,  H04N19/34 ,  H04N19/503 ,  H04N19/70

摘要： A method and apparatus for depth lookup table (DLT) signaling in a three-dimensional and multi-view coding system are disclosed. According to the present invention, if the pictures contain only texture data, no DLT information is incorporated in the picture parameter set (PPS) corresponding to the pictures. On the other hand, if the pictures contain depth data, the DLT associated with the pictures is determined. If a previous DLT required for predicting the DLT exists, the DLT will be predicted based on the previous DLT. Syntax related to the DLT is included in the PPS. Furthermore, first bit-depth information related to first depth samples of the DLT is also included in the PPS and the first bit-depth information is consistent with second bit-depth information signaled in a sequence level data for second depth samples of a sequence containing the pictures.

摘要翻译： 公开了一种用于三维和多视图编码系统中的深度查找表（DLT）信令的方法和装置。 根据本发明，如果图像仅包含纹理数据，则不对应于图像的图像参数集（PPS）中并入DLT信息。 另一方面，如果图像包含深度数据，则确定与图像相关联的DLT。 如果存在用于预测DLT所需的先前DLT，则将基于先前的DLT预测DLT。 与DLT相关的语法包含在PPS中。 此外，与DLT的第一深度样本相关的第一位深度信息也包括在PPS中，并且第一位深度信息与第二深度信息一致，该第二位深度信息与序列级数据中信号的第二位深度信息一致， 图片。

公开(公告)号：US20160165209A1

公开(公告)日：2016-06-09

申请号：US14905705

申请日：2015-06-18

申请人： Han HUANG ,  Xianguo ZHANG ,  Jicheng AN ,  Jian-Liang LIN ,  Kai ZHANG

发明人： Han HUANG ,  Xianguo ZHANG ,  Jicheng AN ,  Jian-Liang LIN ,  Kai ZHANG

IPC分类号： H04N13/00 ,  H04N19/44 ,  H04N19/51 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/187 ,  H04N19/176 ,  H04N13/04 ,  H04N19/136

CPC分类号： H04N13/161 ,  H04N13/128 ,  H04N13/15 ,  H04N19/136 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/44 ,  H04N19/51 ,  H04N19/597 ,  H04N19/70 ,  H04N2013/0077 ,  H04N2013/0081

摘要： A method of sub-PU (prediction unit) syntax element signaling for a three-dimensional or multi-view video coding system is disclosed. A first syntax element associated with a texture sub-PU size is transmitted only for texture video data and a second syntax element associated with a depth sub-PU size is transmitted only for depth video data. The first syntax element associated with the texture sub-PU size is used to derive an IVMP (inter-view motion prediction) prediction candidate used for a texture block. The second syntax element associated with the depth sub-PU size is used to a MPI (motion parameter inheritance) prediction candidate for a depth block.

摘要翻译： 公开了一种用于三维或多视点视频编码系统的子PU（预测单元）语法元素信令的方法。 仅针对纹理视频数据传送与纹理子PU尺寸相关联的第一语法元素，并且仅针对深度视频数据传送与深度子PU尺寸相关联的第二语法元素。 与纹理子PU尺寸相关联的第一语法元素用于导出用于纹理块的IVMP（视角间运动预测）预测候选。 与深度子PU尺寸相关联的第二语法元素用于深度块的MPI（运动参数继承）预测候选。

公开(公告)号：US20200236353A1

公开(公告)日：2020-07-23

申请号：US15758874

申请日：2016-09-13

申请人： Kai ZHANG ,  Jicheng AN ,  Han HUANG

发明人： Kai ZHANG ,  Jicheng AN ,  Han HUANG

IPC分类号： H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/86

摘要： A method and apparatus for adaptive de-blocking filter are disclosed. One or more parameters associated with a de-blocking filter are determined. De-blocking filter using the derived parameters are then applied to reconstructed blocks. Each set of parameters is used for each picture, slice, coding tree unit (CTU) or CU (coding unit). The parameters can be signalled in VPS (video parameter set), SPS (sequence parameter set), PPS (picture parameter set), slice header, CTU (coding tree unit) or CU (coding unit) of the video bitstream. The parameters correspond to one or more values used as thresholds, clipping boundaries, or both the thresholds and clipping boundaries for the de-blocking filter. In one embodiment, the parameters for the current picture are determined using a training process using a current coded picture a previous coded picture as training data.

公开(公告)号：US20170171558A1

公开(公告)日：2017-06-15

申请号：US15323809

申请日：2015-07-15

申请人： Han HUANG ,  Jicheng AN ,  Kai ZHANG ,  Xianguo ZHANG

发明人： Han HUANG ,  Jicheng AN ,  Kai ZHANG ,  Xianguo ZHANG

IPC分类号： H04N19/577 ,  H04N19/517

CPC分类号： H04N19/577 ,  H04N19/517 ,  H04N19/52 ,  H04N19/70

摘要： A method and apparatus of deriving a temporal derived motion vector in a second direction based on a given motion vector in a first direction for motion vector prediction are disclosed. According to the present invention, a given motion vector for a current block is determined, where the given motion vector points from the current block in a first direction. A reference motion vector associated with a first reference block in a first reference frame is identified. Then, based on the reference motion vector and the given motion vector, a temporal derived motion vector is derived. The temporal derived motion vector points from the current block to a second reference block in a second reference frame in a second direction different from the first direction. The temporal derived motion vector is then used as one predictor for encoding or decoding of the motion vector of the current block.

公开(公告)号：US20150341664A1

公开(公告)日：2015-11-26

申请号：US14759042

申请日：2013-12-13

申请人： Yi-Wen CHEN ,  Jian-Liang LIN ,  Jicheng AN ,  Kai ZHANG ,  ZHANG, Na

发明人： Na ZHANG ,  Yi-Wen CHEN ,  Jian-Liang LIN ,  Jicheng AN ,  Kai ZHANG

IPC分类号： H04N19/597 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176

CPC分类号： H04N19/597 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176

摘要： A derived disparity vector is determined based on spatial neighboring blocks and temporal neighboring blocks of the current block. The temporal neighboring blocks are searched according to a temporal search order and the temporal search order is the same for all dependent views. Any temporal neighboring block from a CTU below the current CTU row may be omitted in the temporal search order. The derived DV can also be used for predicting a DV of a DCP (disparity-compensated prediction) block for the current block in the AMVP mode, the Skip mode or the Merge mode. The temporal neighboring blocks may correspond to a temporal CT block and a temporal BR block. In one embodiment, the temporal search order checks the temporal BR block first and the temporal CT block next.

摘要翻译： 基于当前块的空间相邻块和时间相邻块来确定派生视差向量。 根据时间搜索顺序搜索时间相邻块，并且所有相关视图的时间搜索顺序是相同的。 可以在时间搜索顺序中省略来自当前CTU行下方的CTU的任何临时相邻块。 导出的DV还可以用于在AMVP模式，跳过模式或合并模式中预测当前块的DCP（视差补偿预测）块的DV。 时间相邻块可以对应于时间CT块和时间BR块。 在一个实施例中，时间搜索顺序首先检查时间BR块，然后检查时间CT块。

公开(公告)号：US20150341663A1

公开(公告)日：2015-11-26

申请号：US14442951

申请日：2013-11-14

申请人： Kai ZHANG ,  Jicheng AN ,  Jian-Liang LIN

发明人： Kai ZHANG ,  Jicheng AN ,  Jian-Liang LIN

IPC分类号： H04N19/597 ,  H04N19/174 ,  H04N19/14 ,  H04N19/172 ,  H04N19/52 ,  H04N19/176

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/14 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

摘要： A method and apparatus using pseudo residues to predict current residues for three-dimensional or multi-view video coding are disclosed. The method first receives input data associated with a current block of a current picture in a current dependent view and determines an inter-view reference block in a first inter-view reference picture in a reference view according to a DV (disparity vector), where the current picture and the first inter-view reference picture correspond to same time instance. Pseudo residues are then determined and used for encoding or decoding of the current block, where the pseudo residues correspond to differences between a corresponding region in an inter-time reference picture in the current dependent view and a pseudo reference region in a pseudo reference picture in the reference view, and where the inter-time reference picture and the pseudo reference picture correspond to same time instance.

摘要翻译： 公开了一种使用伪残差来预测三维或多视点视频编码的当前残差的方法和装置。 该方法首先在当前依赖视图中接收与当前图像的当前块相关联的输入数据，并根据DV（视差向量）在参考视图中确定第一视景间参考图片中的视角间参考块，其中 当前图片和第一视景间参考图片对应于相同的时间实例。 然后确定伪残差并用于当前块的编码或解码，其中伪残差对应于当前依赖视图中的时间间参考图像中的对应区域与伪参考图像中的伪参考区域之间的差异 参考视图，以及时间间参考图片和伪参考图片对应于相同的时间实例。

公开(公告)号：US20180255316A1

公开(公告)日：2018-09-06

申请号：US15564206

申请日：2016-04-13

申请人： Kai ZHANG ,  Jicheng AN

发明人： Kai ZHANG ,  Jicheng AN

IPC分类号： H04N19/52 ,  H04N19/31 ,  H04N19/70

CPC分类号： H04N19/52 ,  H04N19/176 ,  H04N19/30 ,  H04N19/31 ,  H04N19/503 ,  H04N19/70

摘要： A method and apparatus for encoding or decoding a motion vector (MV) of a current block of a current picture using advanced temporal motion vector prediction are disclosed. At least two collocated pictures are selected from a set of reference pictures of the current picture. One or more TMVPs are derived based on reference motion vectors (MVs) associated with collocated reference blocks of the collocated pictures. A motion vector prediction candidate set including one or more TMVPs is then determined. The current block is encoded or decoding using the motion vector prediction candidate set. The reference motion vectors (MVs) are scaled before the reference motion vectors (MVs) are used to derive the TMVPs.

公开(公告)号：US20180199061A1

公开(公告)日：2018-07-12

申请号：US15742429

申请日：2016-07-07

申请人： Kai ZHANG ,  Jicheng AN

发明人： Kai ZHANG ,  Jicheng AN

IPC分类号： H04N19/593 ,  H04N19/11 ,  H04N19/186 ,  H04N19/176

CPC分类号： H04N19/593 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463

摘要： A method and apparatus of Intra prediction mode coding using one or more extended neighbouring blocks are disclosed. The set of extended neighbouring blocks comprises at least one neighbouring block not corresponding to a top-left neighbouring block and not corresponding to a leftmost-above neighbouring block. One or more Intra prediction mode candidates derived based on Intra prediction modes of the set of extended neighbouring blocks related to the current block are used to predict the current Intra prediction mode of the current block. The set of extended neighbouring blocks may comprise spatial neighbouring blocks of the current block. The set of extended neighbouring blocks may also comprise temporal neighbouring blocks within a collocated block of the current block. Another method and apparatus for unified candidate Intra prediction mode list for different colour components are disclosed.