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    • 83. 发明申请
    • A METHOD FOR PROCESSING I-BLOCKS USED WITH MOTION COMPENSATED TEMPORAL FILTERING
    • 用于处理使用运动补偿时间过滤的I块的方法
    • WO2004111789A2
    • 2004-12-23
    • PCT/US2004/018369
    • 2004-06-09
    • RENSSELAER POLYTECHNIC INSTITUTEWOODS, John, W.CHEN, PeisongWU, Yongjun
    • WOODS, John, W.CHEN, PeisongWU, Yongjun
    • G06F
    • H04N19/615H04N19/13H04N19/61H04N19/63
    • A method, system, computer program product, and computer system for processing video frames. Frames A and B of a pair of successive video frames each comprise blocks of pixels. Frame A is earlier in time than frame B. A connection state of each pixel in frame B relative to the pixels of frame A is determined. The connection state is a connected state or an unconnected state. Each block in frame B is classified as either unconnected or uni-connected. Uni-connected blocks in frame B satisfying a reclassification criteria are reclassified as being unconnected. Each unconnected block in frame B is categorized as being a P-block or an I-block. Values for the pixels of each I-block in frame B are calculated by spatial Interpolation based on values of nearest available neighbor pixels relative to each I-block. A residual error block for each I-block in frame B is generated.
    • 一种用于处理视频帧的方法,系统,计算机程序产品和计算机系统。 一对连续视频帧的帧A和B各自包括像素块。 帧A在时间上比帧B早。确定帧B中每个像素相对于帧A的像素的连接状态。 连接状态是连接状态或未连接状态。 帧B中的每个块被分类为未连接或单连接。 满足重新分级标准的框架B中的单连接块被重新分类为未连接。 帧B中的每个未连接的块被分类为P块或I块。 基于相对于每个I块的最近可用相邻像素的值,通过空间插值来计算帧B中每个I块的像素的值。 生成帧B中每个I块的残差错误块。
    • 88. 发明公开
    • ADAPTIVE MOTION VECTOR RESOLUTION SIGNALING FOR VIDEO CODING
    • SIGNALISIERUNG DER ADAPTIVENAUFLÖSUNGVON BEWEGUNGSVEKTOREN IN DER VIDEOCODIERUNG
    • EP2628300A1
    • 2013-08-21
    • EP11773607.4
    • 2011-10-03
    • Qualcomm Incorporated
    • CHIEN, Wei-JungCHEN, PeisongKARCZEWICZ, Marta
    • H04N7/26H04N7/36H04N7/46H04N7/50
    • H04N19/523H04N19/13H04N19/139H04N19/176H04N19/463H04N19/91
    • A video encoder may be configured to adaptively select a sub-pixel precision for motion vectors used to encode video data. The video encoder may further entropy encode an indication of the sub-pixel precision using context adaptive binary arithmetic coding, where the context may correspond to the size of a block of video data for the motion vector. For example, the size may correspond to the depth of a coding unit, the size of a prediction unit of the coding unit, and/or a type for the prediction unit. The video encoder may also interpolate values for one-sixteenth pixel positions of chrominance data using bilinear interpolation. The video encoder may further encode a motion vector difference value for the motion vector using an encoding scheme corresponding to the sub-pixel precision of the motion vector. A video decoder may use similar, reciprocal techniques for decoding the video data.
    • 视频编码器可以被配置为自适应地选择用于对视频数据进行编码的运动矢量的子像素精度。 视频编码器可以使用上下文自适应二进制算术编码进一步对子像素精度的指示进行熵编码,其中上下文可以对应于运动矢量的视频数据块的大小。 例如,大小可以对应于编码单元的深度,编码单元的预测单元的大小和/或预测单元的类型。 视频编码器还可以使用双线性插值内插色度数据的第十六像素位置的值。 视频编码器可以使用与运动矢量的子像素精度相对应的编码方案来进一步编码运动矢量的运动矢量差值。 视频解码器可以使用类似的,相互对应的技术来解码视频数据。