A Fast Shot Transition Detecting Algorithm on MPEG Sequences

In order to process video data efficiently, a video segmenting technique must be required. We propose a fast shot transition detecting algorithm directly on MPEG compressed video sequence. The algorithm can detect not only abrupt transition, but also gradual transition. The computing cost of the algorithm is low, because we directly use the type of macroblocks and motion vectors that MPEG compressed video provides. The result of experiment is rather well.

回转窑结构分析

以某大型回转窑为研究对象,对其进行静力学分析和热-结构耦合分析。通过对回转窑的局部模型分析,确定侧壁的薄弱位置,同时对局部模型中侧壁壁厚进行优化,得到应力随壁厚变化的分布规律。通过对回转窑整体模型进行分析得到整体挠度及出料口附近的应力分布情况,分析结果可为回转窑的设计优化提供参考。