This paper introduces in detail the technical characteristics and directions for use of HUAGUANG brand type TN negative thermosensitive computer-to-plate (CTP) plate made by NO.

The research work of KPG and Agfa has been reviewed in detail c overing both negative thermosensitive plates and positive thermosensitiv e plates.

5,5) the range of its molecular weight was from 4×105 to 8×105,the negative PS plate obtained had excellent sensitivity,hydrophobic property,good developability,good ink receptivity and good scratch resistance.

In this paper, its historical development is at first outlined, followed by a detailed review on the main matting technologies, including blue screen matting, natural image matting, as well as some extended technologies of matting on image, such as environment matting, shadow matting, and video matting.

Algorithm of real-time soft shadows based on shadow maps;

Variance shadow maps algorithm adopts a probability method to estimate the up-bound of the probability of a pixel falling in shadow,it effectively reduces the aliasing in traditional shadow maps algorithm by filtering the shadow maps themselves.