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"Glen Berry" <7no### [at] ezwv com> wrote in message
news:pXYxOXE4D1XVOpeHh+OPfy4kamrN@4ax.com...
| For anyone interested in the Cornell Box used in testing computer
| rendering, here is the address of original's "home page."
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| http://www.graphics.cornell.edu/online/box/
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| It provides details on the history, use, and construction of the
| Cornell Box. I should say "boxes" because there have been several
| variations created over the years. My favorite section is the
| "comparisons" page, where they compare a "laboratory-grade" photo of a
| physical box, with an advanced computer rendering of the same box.
Looking it over I can see how the most lit portions are the most off, while the
shadowy
areas are more accurate in the "room" part. The two boxes in the room have very
different base edges, almost opposites. Real room shows them to have spacing or
something where they meet the floor, rendering doesn't have any such gap. Then
there's
the strange illumination at the near, bottom corner of the closest box as well as a
brightening far back top of it. Also what appears to be a highlight showing up in the
real mirrored box on its top middle to right.
Much of it all seems a discrepancy of closed spaces and wide open spaces, counting
shadow/light boundaries as well. Which to me feeble mentality means a simple linear
fix
or similar could be possible. Or do I mean logarithmic? Exponential? I have no idea,
but it's always fun to think about.
Bob
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