High efficient moving object extraction and classification in traffic video surveillance

Moving object extraction and classification are important problems in automated video surveillance systems. A background model based on region segmentation is proposed. An adaptive single Gaussian background model is used in the stable region with gradual changes, and a nonparametric model is used in the variable region with jumping changes. A generalized agglomerative scheme is used to merge the pixels in the variable region and fill in the small interspaces. A two-threshold sequential algorithmic scheme is used to group the background samples of the variable region into distinct Gaussian distributions to accelerate the kernel density computation speed of the nonparametric model. In the feature-based object classification phase, the surveillance scene is first partitioned according to the road boundaries of different traffic directions and then re-segmented according to their scene localities. The method improves the discriminability of the features in each partition. AdaBoost method is applied to evaluate the relative importance of the features in each partition respectively and distinguish whether an object is a vehicle, a single human, a human group, or a bike. Experimental results show that the proposed method achieves higher performance in comparison with the existing method.     

平果铝高压溶出预热过程结疤性质研究

拜耳法高压溶出过程形成的结疤 ,对氧化铝生产是十分有害的 ,开展对其结疤性质的研究 ,对于探索结疤形成的机理及结疤的防治 ,提供了理论和实践依据 ,具有十分重要的意义。     

显Cayley定理及其作用

主要引入了显Cayley定理并给出了相关的证明。 在对Cayley定理的比较中归纳出一些结论。     

冲击式采煤机传动系统动态仿真结果分析

建立了冲击式采煤机传动系统动态分析模型，编制了仿真软件，重点分析了该软件运行结果。该软件的编制给冲击式采煤机的设计和优化提供了方便、快捷的手段。     

冲击作用下桩的竖向振动分析

对扰力作用下等截面桩的竖向振动进行了理论分析，得出了其竖向振动的固有频率方程和在顶面受冲击力作用下的强迫竖向振动的位移响应。     

Knitting and Finishing of Ramie Knitted Fabrics Blended with Fine Polyester

Ramie fibre is harsh and rigid. Ramie yarns have a hairy feel and reduced cohesion. A considerable amount of research has been done to ease the undesirable properties of ramie products through modifying conditions of knitting and finishing according to the special properties of the ramie yarn. From the comparison results, burning the hairiness is shown as one of the effective methods to bnprove the properties of the yarn. A typical finishing condition with enzyme treatment is also recommended.     

浅谈中国20世纪20年代浪漫主义研究

20世纪20年代的浪漫主义文学以1925年为临界点,1925年以前浪漫主义文学的出现称为"突然崛起",1925年以后浪漫主义转向看做是"迅速中落",称创造社在1952年以后的创作为"集体性"的.     

有关动力触探影响因素修正问题的探讨

本文主要针对不同行业的规范中对动力触探试验影响因素修正方法的不统一进行初步探讨     

稀浆封层技术在公路养护中的应用

稀浆封层是将乳化沥青、符合级配的骨料、水、填料及添加剂按一定的设计配比搅拌成稀浆混合料，均匀地摊铺在待处理的路面上，与原路面牢固地结合在一起，形成密实、坚固、耐磨的道路表面封层，大大提高路面使用性能，具有很大的发展前景。     

双向编程遥控的电话线联网警戒系统设计

介绍一种可双向编程遥控的电话线联网警戒系统，讨论了硬件实现，数据传输格式，软件设计。