Abstract
Ray casting and object projection are important means of rendering volume data. These methods create more realistic image, but involve higher computational cost, than surface rendering. The conventional ray casting algorithm uses a trilinear interpolation process to determine the densities of the sample points along a ray. In this paper, we propose a more efficient incremental approach to approximate the trilinear interpolation. A ray casting algorithm that uses this incremental approach is theoretically at least two times faster than that using conventional trilinear interpolation in producing similar quality images. Further speedup can be achieved with little decrease in image quality by sampling a different number of points for each cell along the ray. The speedup and high image quality are supported by the result of an experiment we performed.
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© 1992 Springer-Verlag Tokyo
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Shu, R., Chui, CK. (1992). An Adaptive Incremental Sampling Approximation to Volume Rendering. In: Kunii, T.L. (eds) Visual Computing. CG International Series. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68204-2_18
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DOI: https://doi.org/10.1007/978-4-431-68204-2_18
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68206-6
Online ISBN: 978-4-431-68204-2
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