Frequency domain volume rendering

The Fourier projection-slice theorem allows projections of volume data to be generated in O(n2 log n) time for a volume of size n3 . The method operates by extracting and inverse Fourier transforming 2D slices from a 3D frequencydomain representationof the volume. Unfortunately, these projections do not exhibit the occlusion that is characteristic of conventional volume renderings. We present a new frequency domain volume rendering algorithm that replaces much of the missing depth and shape cues by performing shading calculations in the frequency domain during slice extraction. In particular, we demonstrate frequency domain methods for computing linear or nonlinear depth cueing and directional diffuse reflection. The resulting images can be generated an order of magnitude faster than volume renderings and may be more useful for many applications. CR Categories: I.3.7 [Computer Graphics]: Three-dimensional Graphics and Realism.; I.3.3 [Computer Graphics]: Picture/Image Generation; Dis...

• Type: Conference
• Year: 1993
• Where: SIGGRAPH
• Authors: Takashi Totsuka, Marc Levoy
• Keywords: Computer Graphics, Frequency Domain, Frequency Domain Volume, SIGGRAPH 1993, Volume Renderings