Footprint evaluation for volume rendering

@inproceedings{Westover1990FootprintEF,
  title={Footprint evaluation for volume rendering},
  author={Lee Westover},
  booktitle={SIGGRAPH},
  year={1990}
}
This paper presents a forward mapping rendering algorithm to display regular volumetric grids that may not have the same spacings in the three grid directions. It takes advantage of the fact that convolution can be thought of as distributing energy from input samples into space. The renderer calculates an image plane footprint for each data sample and uses the footprint to spread the sample's energy onto the image plane. A result of the technique is that the forward mapping algorithm can… CONTINUE READING

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