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Contents Introduction Lightscape System Specter System Radiance System Scenes for Comparison Experimental Results Conclusion Acknowledgments |
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A.B. Khodulev, E.A. Kopylov
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Contents Introduction Lightscape System Specter System Radiance System Scenes for Comparison Experimental Results Conclusion Acknowledgments |
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The results of our analysis are summarized in the table below. In this table we use signs "+" or "-" to denote presence or absence of some feature; "+/-" means presence with restrictions. Numerical values: 1, 2, 3 mean relative order of systems from the viewpoint of some criterion (3 - the best, 1 - the worst).
| criterion | LVS | Specter | Radiance |
| Comprehensiveness of local model | |||
| light sources | 1 | 2 | 2 |
| material attributes | 1 | 2 | 3 |
| Completeness of global light propagation model | |||
| specular to diffuse | - | + | +/- |
| long light paths * | +/- | + | +/- |
| accuracy | 1 | 2 | 3 |
| visual image quality | 1 | 3 | 2 |
| User interface features | |||
| result presentation | 1 | 3 | 2 |
| interactivity | 3 | 2 | 1 |
| total ** | 9 | 18 | 15 |
Table 8. Overall comparison.
Comments:
* "Long light paths" means capability of simulating arbitrary long sequences of ray-surface events. This capability seems to be restricted in LVS (otherwise we could expect more accurate results for cube) while in Radiance it is available under user control; this is the reason for "+/-" estimates.
** We calculated the total by summing up all the values in columns counting "-" as 0, "+/-" as 1, and "+" as 2. The greater the resultant value the better the system. Of course, reader may assign different (non-uniform) weights to rows of the table according to his/her preferences thus obtaining different total scores.
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Contents Introduction Lightscape System Specter System Radiance System Scenes for Comparison Experimental Results Conclusion Acknowledgments |
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| © Copyright 1996 Andrei B. Khodulev, Edward A. Kopylov.- All Rights Reserved | [Home] |