DRR was created by ray - tracing, and surface was built by the library of OpenGL.

其中DRR由光线跟踪生成, 三维表面由OpenGL库生成.

Additionally we discuss the resolution and interaction of DRR. Also MIP and the related method are discussed.

同时，还对DRR图像的分辨率、交互等方面进行了讨论，并对最大强度投影（MIP）及其相关方法进行了试验。