The speed of volume rendering is the bottleneck of interactive visualization. In the paper

an original fast rendering system using image based rendering is presented

which greatly improves the speed of interactive visualization by combining the image based rendering and previous volume rendering. At first

a list of sample images is generated by ray tracing. Next these images are compressed by warping transformation. At last

random new view images can be rendered in speed of faster than 50 frames per second. In order to improve the speed more

a fast warping formula is developed