Ray–tracing of multiresolution B–Spline volumes

Abstract

This paper describes a wavelet–based ray–tracing algorithm that carries out high quality images. Our appoach takes advantage of the multiresolution representation of the volume data and the self–similarity of the basis functions. The results are flexible high order approximations of the low albedo rendering equation. We propose accurate integration and evaluation schemes for shading and intensity computation. This paper also describes the calculation of error bounds of the intensity integration. The theory and its implementation are discussed and shaded images are presented.