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    • 4. 发明申请
    • METHOD AND APPARATUS FOR COMPLEXITY SCALABLE VIDEO DECODER
    • 复杂可扩展视频解码器的方法和装置
    • WO2005099275A2
    • 2005-10-20
    • PCT/US2005/010436
    • 2005-03-31
    • THOMSON RESEARCH FUNDING CORPORATIONBOYCE, Jill, MacDonaldTOURAPIS, Alexandros, Michael
    • BOYCE, Jill, MacDonaldTOURAPIS, Alexandros, Michael
    • H04N7/36
    • H04N19/59H04N19/33H04N19/523H04N19/61
    • A video decoder, a video decoding method, a video encoder and a video encoding method are disclosed. A video decoder for decoding a video bitstream for an image block includes a motion vector resolution reducer (999) and a motion compensator (960). The motion vector resolution reducer is for receiving decoded high resolution motion vectors included in the video bitstream and for reducing an accuracy of the high resolution motion vectors to correspond to a low resolution. The motion compensator, in signal communication with the motion vector resolution reducer, is for forming a motion compensated high resolution prediction using the reduced accuracy motion vectors. The video encoder for encoding scalable video comprises a motion compensator (1190) for forming a motion compensated full resolution prediction and combining combining (1105) the motion compensated full resolution prediction from an image block to form a prediction residual. The prediction residual is downsampled (1112) to form a low resolution downsampled prediction residual and then coded (1115).
    • 公开了视频解码器,视频解码方法,视频编码器和视频编码方法。 用于解码图像块的视频比特流的视频解码器包括运动矢量分辨率降低器(999)和运动补偿器(960)。 运动矢量分辨率降低器用于接收包括在视频比特流中的解码的高分辨率运动矢量,并且用于降低高分辨率运动矢量的精度以对应于低分辨率。 与运动矢量分辨率降低器进行信号通信的运动补偿器用于使用精度较低的运动矢量形成运动补偿的高分辨率预测。 用于对可分级视频进行编码的视频编码器包括用于形成运动补偿全分辨率预测的运动补偿器(1190),并且从图像块组合(1105)运动补偿全分辨率预测以形成预测残差。 预测残差被下采样(1112)以形成低分辨率下采样预测残差,然后编码(1115)。
    • 9. 发明申请
    • MOTION ESTIMATION WITH FAST SEARCH BLOCK MATCHING
    • 运动估计与快速搜索块匹配
    • WO2005017759A1
    • 2005-02-24
    • PCT/US2004/006292
    • 2004-03-02
    • THOMSON LICENSING S.A.YIN, PengBOYCE, Jill, MacDonald
    • YIN, PengBOYCE, Jill, MacDonald
    • G06F13/12
    • H04N19/57G06T7/238H04N19/557H04N19/567H04N19/61
    • A video encoder and corresponding method are provided for encoding video signal data for an image block and a particular reference picture index to predict the image block, where the encoder (100) includes a fast search block motion estimator (180) for providing motion vectors corresponding to the at least one particular reference picture, the motion estimator comprising a fast search block matching portion for performing fast search block matching while excluding non-optimal search points in accordance with a comparison of a normalization of the image block pixels against a normalization of the reference picture pixels, the fast search block matching portion having an output responsive to the at least one particular reference picture; and the corresponding method (200) includes receiving a substantially uncompressed image block (212), block matching (214) the image block in correspondence with at least one particular reference picture while excluding non-optimal search points in accordance with a comparison of a normalization of the image block pixels against a normalization of the reference picture pixels, computing (216) motion vectors corresponding to a difference between the image block and the at least one particular reference picture, and motion compensating (218) the at least one particular reference picture in correspondence with the motion vectors.
    • 提供了一种用于对图像块的视频信号数据和特定参考图像索引进行编码以预测图像块的视频编码器和相应方法,其中编码器(100)包括用于提供对应的运动矢量的快速搜索块运动估计器(180) 所述运动估计器包括用于执行快速搜索块匹配的快速搜索块匹配部分,同时根据所述图像块像素的归一化与所述图像块像素的归一化的比较排除非最佳搜索点 参考图像像素,所述快速搜索块匹配部分具有响应于所述至少一个特定参考图片的输出; 并且相应的方法(200)包括:接收基本上未压缩的图像块(212),对应于至少一个特定参考图像的块匹配(214),同时根据标准化的比较排除非最优搜索点 相对于参考图像像素的归一化,计算(216)对应于图像块和至少一个特定参考图像之间的差的运动矢量,以及运动补偿(218)至少一个特定参考图像 与运动矢量对应。