Directional Transforms for Video and Image Coding
    1.
    发明申请
    Directional Transforms for Video and Image Coding 审中-公开
    视频和图像编码的定向变换

    公开(公告)号:US20110090952A1

    公开(公告)日:2011-04-21

    申请号:US12603100

    申请日:2009-10-21

    IPC分类号: H04N7/50

    摘要: A bitstream includes a sequence of frames. Each frame is partitioned into encoded blocks. For each block, a set of paths is determined at a transform angle determined from a transform index in the bitstream. Transform coefficients are obtained from bitstream. The transform coefficients include one DC coefficient for each path. An inverse transform is applied to the transform coefficients to produce a decoded video.

    摘要翻译: 比特流包括一系列帧。 每帧被划分成编码块。 对于每个块,以从比特流中的变换索引确定的变换角确定一组路径。 从比特流获得变换系数。 变换系数包括每个路径的一个DC系数。 将逆变换应用于变换系数以产生解码视频。

    Video Codes with Directional Transforms
    3.
    发明申请
    Video Codes with Directional Transforms 审中-公开
    具有定向变换的视频码

    公开(公告)号:US20110090954A1

    公开(公告)日:2011-04-21

    申请号:US12603177

    申请日:2009-10-21

    IPC分类号: H04N7/24

    摘要: An encoded video in the form of a bitstream includes a sequence of frames, and each frame is partitioned into encoded blocks. A context for decoding is selected for each encoded block. The bitstream is entropy decoded based on the context to obtain a transform indicator difference. The transform index, which indicates a transform type and a transform direction, is based on the transform indicator difference and a predicted transform indicator. Transform coefficients are obtained from the bitstream, and inverse transformed according to the transform index to produce a decoded video.

    摘要翻译: 以比特流形式的编码视频包括一系列帧,每帧被划分成编码块。 为每个编码块选择用于解码的上下文。 基于上下文对比特流进行熵解码以获得变换指示符差异。 指示变换类型和变换方向的变换索引基于变换指标差和预测变换指标。 从比特流获得变换系数,并根据变换索引进行逆变换以产生解码视频。

    Method for coding pictures using hierarchical transform units
    4.
    发明授权
    Method for coding pictures using hierarchical transform units 有权
    使用分层变换单元编码图像的方法

    公开(公告)号:US08494290B2

    公开(公告)日:2013-07-23

    申请号:US13169959

    申请日:2011-06-27

    IPC分类号: G06K9/36

    摘要: A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree.

    摘要翻译: 比特流包括编码图像,以及用于生成变换树的分割标志。 比特流是将编码单元(CU)划分成预测单元(PU)。 转换树根据分裂标志生成。 变换树中的节点表示与CU相关联的变换单元(TU)。 仅当相应的分割标志被设置时,该代码才能分割每个TU。 对于包含多个TU的每个PU,将多个TU合并成一个较大的TU,根据分割和合并修改变换树。 然后,可以使用根据变换树与PU相关联的TU来解码包含在每个PU中的数据。

    Method for Coding Pictures Using Hierarchical Transform Units
    5.
    发明申请
    Method for Coding Pictures Using Hierarchical Transform Units 有权
    使用分层变换单元编码图像的方法

    公开(公告)号:US20120281928A1

    公开(公告)日:2012-11-08

    申请号:US13169959

    申请日:2011-06-27

    IPC分类号: G06K9/36

    摘要: A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree.

    摘要翻译: 比特流包括编码图像,以及用于生成变换树的分割标志。 比特流是将编码单元(CU)划分成预测单元(PU)。 转换树根据分裂标志生成。 变换树中的节点表示与CU相关联的变换单元(TU)。 仅当相应的分割标志被设置时,该代码才能分割每个TU。 对于包含多个TU的每个PU,将多个TU合并成一个较大的TU,根据分割和合并修改变换树。 然后,可以使用根据变换树与PU相关联的TU来解码包含在每个PU中的数据。

    Method and System for Decoding Multiview Videos with Prediction Dependencies
    6.
    发明申请
    Method and System for Decoding Multiview Videos with Prediction Dependencies 有权
    用预测依赖关系解码多视点视频的方法和系统

    公开(公告)号:US20100322311A1

    公开(公告)日:2010-12-23

    申请号:US12871249

    申请日:2010-08-30

    IPC分类号: H04N7/32

    摘要: Multiview videos are acquired of a scene with corresponding cameras arranged at poses, such that there is view overlap between any pair of cameras. V-frames are generated from the multiview videos. The V-frames are encoded using only spatial prediction. Then, the V-frames are inserted periodically in an encoded bit stream to provide random temporal access to the multiview videos. Additional view dependency information enables the decoding of a reduced number of frames prior to accessing randomly a target frame for a specified view and time, and decoding the target frame. The method also decodes multiview videos by maintaining a reference picture list for a current frame of a plurality of multiview videos, and predicting each current frame of the plurality of multiview videos according to reference pictures indexed by the associated reference picture list.

    摘要翻译: 多视点视频被采集到具有以姿势布置的相应摄像机的场景,使得在任何一对摄像机之间存在视图重叠。 V帧是从多视角视频生成的。 V帧仅使用空间预测编码。 然后,将V帧周期性地插入到编码比特流中,以便为多视点视频提供随机的时间访问。 附加的视图依赖性信息使得能够在对指定的视图和时间的随机访问目标帧之前对减少数量的帧进行解码,以及对目标帧进行解码。 该方法还通过维护多个多视角视频的当前帧的参考图片列表,并根据由相关参考图片列表索引的参考图片来预测多个多视角视频中的每个当前帧来对多视点视频进行解码。

    Error resilient encoding method for inter-frames of compressed videos
    10.
    发明授权
    Error resilient encoding method for inter-frames of compressed videos 失效
    压缩视频帧间错误弹性编码方法

    公开(公告)号:US07324698B2

    公开(公告)日:2008-01-29

    申请号:US10717679

    申请日:2003-11-20

    IPC分类号: G06K9/36

    CPC分类号: H04N19/513 H04N19/895

    摘要: A method encodes an inter-frame of a compressed video, the inter-frame including multiple macroblocks in a predetermined order. Each macroblock has an associated motion vector. For each current macroblock in the predetermined order, a set of near macroblocks are identified. An index is assigned to each near macroblock. A difference between the motion vector of the current macroblock and the motion vector of each near macroblocks is determined. The indices of the near macroblocks are then sorted in order of the differences and appended to the inter-frame.

    摘要翻译: 方法对压缩视频的帧间进行编码,帧间以预定顺序包括多个宏块。 每个宏块具有相关的运动矢量。 对于按照预定顺序的每个当前宏块,识别一组近似的宏块。 索引被分配给每个近似的宏块。 确定当前宏块的运动矢量与每个近似宏块的运动矢量之间的差异。 然后按照差异的顺序对近宏块的索引进行排序并附加到帧间。