Technique of computer graphics and virtual reality

applied to medical endoscopy system

come up to a new virtual medical image application: virtual endoscopy. In order to apply virtual reality technique into medical image processing

make convenient for surgeons to access virtual and mini invasive surgery

this paper

presents a full interactive virtual endoscopy system framework

analyzing and discussing system architecture and algorithm models. We explain some key procedures in virtual endoscopy system such as definition of world coordinate

virtual camera

surface detection

normal approximation

volume rendering and surface rendering

and also some interactive control method. And also we put forwards some new methods such as object cache method and extended volume growing method to solve the problems encountered in system

such as real time volume rendering and accurate and smooth image result. Then we applied it in medical image processing

following satisfied result. This improves that these methods are useful and effective. Our system provides an effective tool for medical image visualization

successfully fulfilled the aim of real time displaying and good result in virtual realty and visualization application. It has certain practical meanings in algorithms and system analysis.