Efficient Approach for Face Detection in Video Surveillance

Security access control systems and automatic video surveillance systems are becoming increasingly important recently,and detecting human faces is one of the indispensable processes.In this paper,an approach is presented to detect faces in video surveillance.Firstly,both the skin-color and motion components are applied to extract skin-like regions.The skin-color segmentation algorithm is based on the BPNN (back-error-propagation neural network) and the motion component is obtained with frame difference algorithm.Secondly,the image is clustered into separated face candidates by using the region growing technique.Finally,the face candidates are further verified by the rule-based algorithm.Experiment results demonstrate that both the accuracy and processing speed are very promising and the approach can be applied for the practical use.

InFocus Screenplay 4805

Screenplay 4805是新一代的InFocus家庭影院用入门级投影机。采用12°高对比度DMb芯片。视频处理引入Faroudja DCDi技术，可通过交叉色彩、预移动、自适应处理和专利的胶片模式等功能提供清晰传神的图像。色轮设计比较特别，能在不同的画面模式中实现不同的光亮度输出，图像的质感很强，层次细致，颗粒感很小，锐利清晰。视频输入接口新增加有DVI接口，使用更加方便。

炫目？眩目？——豪杰立体影院2003

在3D技术已成为潮流的今天．视频回放也逐渐向3D方向发展，最大众化的技术莫过于3D立体眼镜的应用，我们曾见过很多单独销售的产品．但大多数情况下很少能将它们真正使用起来，主要原因是欠缺搭配的软件或者易用性极差．让人玩起来索然无味，而我们这次得到的豪杰立体影院2003正是一献将3D立体眼镜和播放器有机结合在一起的综台性产品。