SPLATTING ERRORS AND ANTIALIASING

This paper describes three new results for volume rendering algorithms utilizing splatting. First, an antialiasing extension to the basic sp latting algorithm is introduced that mitigates the spatial aliasing fo r high-resolution volumes. Aliasing can be severe for high-resolution volumes or volumes where a high depth of field leads to converging sam ples along the perspective axis. Next, an analysis of the common appro ximation errors in the splatting process for perspective viewing is pr esented. In this context, we give different implementations, distingui shed by efficiency and accuracy, for adding the splat contributions to the image plane. We then present new results in controlling the splat ting errors and also show their behavior in the framework of our new a ntialiasing technique. Finally, current work in progress on extensions to splatting for temporal antialiasing is demonstrated. Here, we pres ent a simple but highly effective scheme for adding motion blur to fas t moving volumes.