A Screen Sharing Scheme Based on Block Collection and Data Compression
Wu Jie · Computer Technology and Development · 2008
After the deep research of the existing methods of the screen sharing,proposed an efficient scheme according to the practice of the distance education system,to achieve the high compressed ratio at the same time protecting the nearly lossless visual quality.This scheme is named collection and includes the two main techniques,one is called block,and the other is the data-compression method called LZW and RLE.The first step of this scheme is to divide the whole screen to many equal blocks and collect the images by block,save them as bitmap formats.The last step is to apply different method to compress different block images.Apply different method according to the change number of the all blocks,there are two methods: LZW and RLE.After experiment,it has good compression ratio,and it has real time performance,moreover,the decode process is fairly simple.So its application prospect is widespread.