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    • 2. 发明申请
    • Method and apparatus for performing multiple description motion compensation using hybrid predictive codes
    • 使用混合预测码执行多描述运动补偿的方法和装置
    • US20060093031A1
    • 2006-05-04
    • US10523434
    • 2003-07-24
    • Mihaela Van Der SchaarDeepak Turaga
    • Mihaela Van Der SchaarDeepak Turaga
    • H04N11/04H04N11/02H04N7/12H04B1/66
    • H04N19/61
    • An improved multiple description coding (MDC) method and apparatus is provided which extends multi-description motion compensation (MDMC) by allowing for multi-frame prediction and is not limited to only I and P frames. Further, the coding method of the invention extends MDMC for use with any conventional predictive codec, such as, for example, MPEG2/4 and H.26L. The improved MDC permits the use of any conventional predictive coder for use as a top and bottom predictive encoder. Further, the top and bottom predictive coders can advantageously include B-frames and multiple prediction motion compensation. Still further, any of the top, middle and bottom predictive encoders can be a scalable encoder (e.g., FGS-like or data-partitioning like where the motion vectors (MVs) are sent first, temporal scalability etc.).
    • 提供了一种改进的多描述编码(MDC)方法和装置,其通过允许多帧预测来扩展多描述运动补偿(MDMC),并且不限于仅I帧和P帧。 此外,本发明的编码方法扩展了MDMC以用于任何常规的预测编解码器,例如MPEG2 / 4和H.26L。 改进的MDC允许使用任何常规的预测编码器用作顶部和底部预测编码器。 此外,顶部和底部预测编码器可以有利地包括B帧和多个预测运动补偿。 另外,顶部,中间和底部预测编码器中的任何一个可以是可伸缩的编码器(例如,像运动矢量(MV)首先被发送,时间可伸缩性等那样的类似FGS或数据分区)。
    • 9. 发明授权
    • System and method for encoding and decoding the residual signal for fine granular scalable video
    • 用于对细粒度可缩放视频进行编码和解码残留信号的系统和方法
    • US06480547B1
    • 2002-11-12
    • US09419672
    • 1999-10-15
    • Yingwei ChenMihaela Van Der SchaarHayder Radha
    • Yingwei ChenMihaela Van Der SchaarHayder Radha
    • H04N712
    • H04N19/34H04N19/13H04N19/29H04N19/61H04N19/63
    • There is disclosed a video encoder and a video decoder. The video encoder comprises base layer circuitry for receiving an input stream of video frames and generating compressed base layer video data for transmission to a streaming video receiver. The base layer video data comprises original transform coefficients (O) associated with the input stream of video frames and reconstructed base layer transform coefficients (B) associated with the original transform coefficients. The video encoder also comprises enhancement layer circuitry for receiving the original transform coefficients (O) and the reconstructed base layer transform coefficients (B) and generating a residual signal (R) proportional to a difference between the original transform coefficients (O) and the reconstructed base layer transform coefficients (B). The enhancement layer circuitry encodes and sends to the streaming video receiver a sign of the residual signal (R) and the bit planes of the residual signal (R). The video decoder comprises base layer circuitry for receiving compressed base layer video data and determining reconstructed base layer transform coefficients (B) associated with a quantization of the base layer video data. The video decoder further comprises enhancement layer circuitry for receiving enhancement layer video data associated with the compressed base layer video data and determining a residual signal (R) and a sign associated with the residual signal (R). The enhancement layer circuitry reconstructs enhancement layer transform coefficients (E) from the residual signal (R) and the plurality of reconstructed base layer transform coefficients (B).
    • 公开了一种视频编码器和视频解码器。 视频编码器包括用于接收视频帧的输入流并生成用于传输到流式视频接收机的压缩基本层视频数据的基本层电路。 基层视频数据包括与视频帧的输入流相关联的原始变换系数(O)和与原始变换系数相关联的重建的基本层变换系数(B)。 视频编码器还包括用于接收原始变换系数(O)和重构的基本层变换系数(B)的增强层电路,并产生与原始变换系数(O)和重建的变换系数(O)之间的差成比例的残差信号 基层变换系数(B)。 增强层电路对流视频接收机编码残留信号(R)的符号和残留信号(R)的位平面。 视频解码器包括用于接收压缩的基本层视频数据和确定与基本层视频数据的量化相关联的重建的基本层变换系数(B)的基本层电路。 视频解码器还包括增强层电路,用于接收与压缩的基本层视频数据相关联的增强层视频数据,并确定残余信号(R)和与残留信号(R)相关联的符号。 增强层电路从剩余信号(R)和多个重建的基本层变换系数(B)重建增强层变换系数(E)。