摘要
本文提出了一种基于时空分割的甚低码率图像序列的视频对象分割算法。以绝对位移帧差作为时域分割的标准；空间域上采用了一种快速的优化分水岭算法，极大地减少了运算量；然后，将时空分割结果结合起来，获取最终分割结果。对MPEG-4标准视频会议测试序列的测试结果表明，利用该算法优异的性能，不仅可以得到完整而准确的的视频对象，而且具有较快的运算速度，可以满足实时性的要求。
An object-based spatial-temporal segmentation approach for very low bit-rate video sequences is proposed. Temporal segmentation is processed by the absolute displaced frame difference instead of changing detecting mask. A fast rain-falling watershed algorithm is used for the spatial segmentation. Final result is obtained by the combination of the temporal segmentation and the spatial segmentation. The proposed method behaves excellent performance with MPEG-4 test sequences of videoconference.
出处
《电路与系统学报》
CSCD
2001年第2期50-54,共5页
Journal of Circuits and Systems
基金
国家自然科学基金资助项目(60072013)
