【摘要】 MPEG-2标准中,码流中的运动矢量代表了编码时相邻图像间的运动信息。提出一种针对MPEG-2中不同运动补偿方法的运动矢量两步法提取方法:首先选择性提取解码视频码流中的运动矢量,然后其进行滤波系数调整。分析结果表明经过简单滤波后的运动矢量符合显示时相邻图像间的运动信息。提取出的运动矢量经简单处理后可以直接应用于帧率增强。生成的图像保持了运动连贯性,显示效果良好,方法复杂度低。更多还原

【Abstract】 In MPEG-2,the motion vectors encoded inside of compressed video sequence normally have the motion information between adjacent frames.This paper presents a two steps motion vector extracting method: firstly,extract the motion vectors from decoded video stream;secondly,rectify the motion vectors by carefully design the filter coefficients.Analysis of the accuracy of extracted motion vectors indicates that the motion vectors are consistent with the motion information between adjacent frames.The extracted motion field after simple process can be used in frame rate up applications.The motion in the original frames and the formed frames based on the extracted motion field are consistent,and the complexity is low.更多还原