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    • 1. 发明申请
    • VIDEO ON DEMAND SERVER SYSTEM AND METHOD
    • 视频点播服务器系统和方法
    • WO2004025405A2
    • 2004-03-25
    • PCT/US2003/028275
    • 2003-09-10
    • THOMSON LICENSING S.A.BOYCE, Jill, MacDonaldRAMASWAMY, Kumar
    • BOYCE, Jill, MacDonaldRAMASWAMY, Kumar
    • G06F
    • H04N21/47202H04N7/17318H04N21/23439H04N21/23655H04N21/2662
    • A Video-on-Demand Server architecture (100, 200, 300) transmits a plurality of pre-coded programs having different bit rates across a fixed bandwidth channel (11). For each program, a generator (120-12P-1, 110, 210) generates a plurality of different bit rate representations for each program. Each generator also provides control information at each of a plurality of successive time windows T for each bit rate representation. The control information provides a bit rate and a quality measure during each time window T. The control information enables a statistical multiplexer (16, 160, 260) to select a bit rate representation for each program during each time window T to maximize the quality of the selected representations while not exceeding the total available channel capacity.
    • 视频点播服务器架构(100,200,300)在固定带宽信道(11)上传输具有不同比特率的多个预编码节目。 对于每个节目,发生器(120-12P-1,110,210)为每个节目产生多个不同的比特率表示。 每个发生器还为每个比特率表示在多个连续时间窗口T中的每一个上提供控制信息。 控制信息在每个时间窗T期间提供比特率和质量测量。控制信息使得统计多路复用器(16,160,260)能够在每个时间窗T期间为每个节目选择比特率表示,以最大化 选定的表示,同时不超过总可用信道容量。
    • 4. 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。
    • 5. 发明申请
    • IMPLICIT WEIGHTING OF REFERENCE PICTURES IN A VIDEO ENCODER
    • 视频编码器中参考图像的隐含加权
    • WO2004032506A1
    • 2004-04-15
    • PCT/US2003/028274
    • 2003-09-10
    • THOMSON LICENSING S.A.BOYCE, Jill, MacDonald
    • BOYCE, Jill, MacDonald
    • H04N7/12
    • H04N19/577
    • A video decoder (200), encoder (500), and corresponding methods for processing video signal data for an image block with two reference picture indices to predict the image block are disclosed that utilize implicit weighting of reference pictures to enhance video compression, where a decoder (200) includes an implicit reference picture weighting factor unit (280) for determining a weighting factor corresponding to each reference picture index; an encoder (500) includes an implicit reference picture weighting factor assignor (572) for assigning a weighting factor corresponding to each reference picture index; and a method for decoding includes receiving the reference picture indices with the data that corresponds to the image block, determining an implicit weighting factor responsive to the relative positioning of the image block and the reference pictures indicated by each reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference pictures, and multiplying the motion compensated reference pictures by the corresponding weighting factor to form weighted motion compensated reference pictures.
    • 公开了一种视频解码器(200),编码器(500)以及用于处理具有两个参考图像索引以用于预测图像块的图像块的视频信号数据的相应方法,其利用参考图像的隐式加权来增强视频压缩,其中 解码器(200)包括用于确定对应于每个参考图像索引的加权因子的隐式参考图像加权因子单元(280) 编码器(500)包括用于分配对应于每个参考图像索引的加权因子的隐式参考图像加权因子分配器(572) 并且一种解码方法包括用与图像块对应的数据接收参考图像索引,响应于图像块的相对定位和由每个参考图像索引指示的参考图像来确定隐式加权因子,检索参考图像 对于每个索引,运动补偿检索到的参考图像,并且将运动补偿参考图像乘以相应的加权因子以形成加权的运动补偿参考图片。
    • 6. 发明申请
    • ADAPTIVE WEIGHTING OF REFERENCE PICTURES IN VIDEO ENCODING
    • 参考图像在视频编码中的自适应加权
    • WO2004008761A1
    • 2004-01-22
    • PCT/US2003/021728
    • 2003-07-14
    • THOMSON LICENSING S.A.BOYCE, Jill, MacDonald
    • BOYCE, Jill, MacDonald
    • H04N7/12
    • H04N19/126H04N19/105H04N19/149H04N19/172H04N19/176H04N19/196H04N19/197H04N19/46H04N19/513H04N19/573H04N19/61
    • A video decoder ( Figure 3, 300), encoder (500), and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder (300) includes a reference picture weighting factor unit (380) for determining a weighting factor corresponding to the particular reference picture index; an encoder (500) includes a reference picture weighting factor assignor (572) for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture.
    • 公开了一种视频解码器(图3,300),编码器(500)以及用于处理图像块的视频信号数据和用于预测图像块的特定参考图像索引的相应方法,其利用参考图像的自适应加权来增强视频 压缩,其中解码器(300)包括用于确定对应于特定参考图像索引的加权因子的参考图像加权因子单元(380) 编码器(500)包括用于分配对应于特定参考图像索引的加权因子的参考图像加权因子分配器(572) 并且一种解码方法包括:利用对应于图像块的数据接收参考图像索引,确定每个接收到的参考图像索引的加权因子,检索每个索引的参考图像,补偿检索到的参考图像的运动, 运动补偿参考图片通过相应的加权因子形成加权运动补偿参考图片。