关键词: MITK,Ray-Casting,光学模型,颜色赋值,图像合成

Abstract: D-volume reconstruction of medical images,the basic flow scheme of volume rendering and the theory of its optical model are analysed,especially the model and theory of the ray casting algorithm are examined in depth and the critical technologies of color evaluation,points resample and picture synthesis and so on are deeply disscussed.Finally,the volume rendering function of medical images grounds on MITK platform is realized.The 3D volume model rendered by the algorithm can be interactively operated on its photo-illumination attribute,surface attribute and environmental parameters.The system can execute normal plane incision and dynamic vision of the plane.Furthermore,it can rotate,zoom and shift the 3D volume model.

Key words: MITK,Ray-Casting,Optical model,Color evaluation,Picture synthesis