Multi-dimensional Transfer Function Design and Implementation of Volume Rendering
Transfer function is one of the most important factors to affect the quality of volume-rendered images,which reveals the important structures in the data,and in reverse,hides unimportant regions.The multi-dimensional transfer function design is studied to improve the accuracy and real-time of medical volume rendering.The histogram volume based method can greatly simplify the design task and lead to an effective transfer function.Additionally,the realization of multi-dimensional transfer function is based on the texture characteristics of GPU,which can greatly improve the rendering speed and enhance the interactivity of the system.Stroked-based interactive mode makes the final interface user-friendly.Studies show that multi-dimensional transfer function design of GPU-based volume rendering can be more flexible in data mining of internal information,and better in the distinction among various organ structures in medical images.