Implementation Functions of WebGIS Based on Bitmap

As a kind of GIS technology based on B/S pattern, Web GIS has been widely applied. However, in certain specific circumstances, such as lack of digital vector maps, or the precision of digital map can not meet the request, the function of GIS can not be achieved. Since the acquisition of bitmap is relatively easy, this paper put forward a new method with JavaApplet technology to deal with bitmap instead of using the professional map engine software to achieve the function of WebGIS, and explored a new and effective solution for the special applications of WebGIS.