The following movies are actually undersampled - and for a reason.
These movies are rendered at 640x480 with parameter settings that are
intended for a much lower resoluton. The reason this is beneficial is
many-fold. To take advantage of some of these benefits, you'll likely have
to right click the movie links and go to Save-as in order to
utilize a quicktime movie player without a forced browser interface.
First, supersampling is gained by simply running the movies at a lower
resolution. The amount of supersampling is actually up to the viewer. By
viewing the window at 'half' size a 4-to-1 supersampling occurs. You will
find that many of the deficiencies seen at the full resolution seem to
disappear in this mode.
Another reason this is beneficial is because it is possible
to view the renderings with improper settings. This allows viewers to
discern common mistakes and artifacts that can be present in the
algorithms. It also allows the viewer to point out changes in level of
detail very easily.
Lastly, by rendering at 640x480, we are already at video resolution.
This leads to natural conversions to other types of mediums.
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View the rendering system movie by clicking here. Notice the errors in LOD transitions when viewing
this movie at 100%. Try 25% and notice how these transitions seem to fade
away. This is because the screen space projection of any element in the
movie is decreased and oversampling is occuring.
Subdivision level 4 (256 triangles per original triangle) is
used in this sequence. |
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View color encoding scheme movie by clicking here. In this rendering, green corresponds to
displacement maps, blue to redistributed bump mapping and red to BRDFs.
Transitions are denoted by a color gradient between green and blue or blue
and red as appropriate. |
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View a change between rendering and color encoding by
clicking here. A subdivision level of 1 (4
triangles per original triangle) is used in this video. |
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This sequence with only the LOD w/ BRDF is available here.
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This sequence with only the LOD w/ Redistributed Bump Mapping
is available here.
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The sequence with only the LOD w/ Displacement Mapping is
available here. Subdivision level 4 is used in this sequence.
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