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首页> 外国专利> VIDEO CODING BASED ON GLOBAL MOTION COMPENSATED MOTION VECTORS

VIDEO CODING BASED ON GLOBAL MOTION COMPENSATED MOTION VECTORS

机译：基于整体运动补偿矢量的视频编码

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摘要

A method of determining a bitstream is described, including: determining a motion vector of a current block of a video frame of a sequence of video frames comprising video data captured by a video capturing device, the motion vector defining an offset of the current block relative to a prediction block of an already encoded first reference video frame, part of the offset being associated with global motion in the video data if the video capturing device is moving relative to a scene; determining a motion vector predictor selected by the processor from motion vectors of already encoded blocks of the current video frame; and, a motion compensation vector for the motion vector of the current block, for providing an estimate of the part of the motion vector that is associated with global motion; determining a global motion compensated motion vector based on a difference between the motion vector and motion compensation vector, and, a motion vector difference based on the motion vector predictor and the compensated motion vector; and, the processor using an entropy coding algorithm to code the motion vector difference; and, conversion information for converting the compensated motion vector into the motion vector, into a bitstream.
机译：描述了一种确定比特流的方法，该方法包括：确定包括由视频捕获设备捕获的视频数据的视频帧序列中的视频帧的视频帧的当前块的运动矢量，该运动矢量定义当前块相对于视频的偏移。到已经编码的第一参考视频帧的预测块，如果视频捕获设备相对于场景移动，则该偏移量的一部分与视频数据中的全局运动相关联;确定处理器从当前视频帧的已编码块的运动矢量中选择的运动矢量预测器;用于当前块的运动矢量的运动补偿矢量，用于提供运动矢量中与全局运动相关的部分的估计;根据运动矢量和运动补偿矢量之间的差确定全局运动补偿运动矢量，以及基于运动矢量预测值和补偿后的运动矢量确定运动矢量差;处理器使用熵编码算法对运动矢量差进行编码;用于将补偿后的运动矢量转换为运动矢量的转换信息转换为比特流。

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