Search found 14 matches

Search found 14 matches • Page 1 of 1
by Beltane
Tue Dec 05, 2006 2:06 am
Forum: Bugs and Requests
Topic: triganometric calculations
Replies: 4
Views: 1922

http://en.wikipedia.org/wiki/Discrete_Fourier_transform The FFT and DFT are widely used in data compression, spectrum analysis and the solving of problems involve PDEs, but not in ray tracing. I think using a look-up table would increase rendering speed, but not by much. A well-programmed GI ray tr...
by Beltane
Fri Dec 01, 2006 2:55 am
Forum: Bugs and Requests
Topic: Thin film interfaces
Replies: 4
Views: 1968

OnoSendai wrote:I don't think it's that useful tho :)
No, but it looks so purdy! :wink:
by Beltane
Thu Nov 30, 2006 11:41 pm
Forum: Bugs and Requests
Topic: Thin film interfaces
Replies: 4
Views: 1968

Thin film interfaces

I came across this paper which I thought would be of interest. It describes an algorithm to simulate optical dispersion in a dielectric of a thickness similar to that of the wavelength of visible light. The results are pretty cool and although the paper doesn't apply it to anything more complex than...
by Beltane
Thu Sep 28, 2006 11:21 am
Forum: Finished Artwork
Topic: hires render of my diamond mat preview scene
Replies: 12
Views: 4912

Koba wrote:P.S> This may not be the right place but an update on Igneus progress would be well appreciated!
Updates are coming, but PhD research keeps getting in the way! Thanks for the comments too; it's nice to know people are visiting my site. :)
by Beltane
Thu Sep 28, 2006 2:26 am
Forum: Finished Artwork
Topic: hires render of my diamond mat preview scene
Replies: 12
Views: 4912

:oops:
by Beltane
Thu Sep 28, 2006 1:52 am
Forum: Finished Artwork
Topic: hires render of my diamond mat preview scene
Replies: 12
Views: 4912

I was just wondering: which component of the model will actually preview the material (the Inner sphere, or one of the outer bands)?
by Beltane
Mon Sep 04, 2006 6:20 am
Forum: Indigo General Stuff
Topic: I need some help to get rid of this odd smoothing
Replies: 11
Views: 4465

Ono-Sendai wrote:Yeah, i have lots or problems like this ,not sure if I have the exact same problem tho. Veach talks quite a lot about this issue in chapter 5 of his thesis, have a look at that if you haven't already.
That's incredibly useful. Thanks a lot! :D
by Beltane
Sun Aug 27, 2006 8:22 am
Forum: Indigo General Stuff
Topic: I need some help to get rid of this odd smoothing
Replies: 11
Views: 4465

Nick, this reminds me of a similar problem I sometimes have with normals: http://www.raytracing.co.uk/stuff/normals.jpg When the local contribution is calculated on a surface with interpolated normals like the one above, the renderer thinks that the point is unoccluded (disregarding non-local surfac...
by Beltane
Sun Aug 27, 2006 7:48 am
Forum: Indigo General Stuff
Topic: hmmm...problem: building mesh KD-tree
Replies: 10
Views: 5180

I'm guessing that Indigo uses a surface area heuristic to build the kd-tree. From my experience, certain polygon configurations (especially those that contain interlocking or abnormally shaped triangles; for example, some of the intricate Jotero mathe models) can upset the partitioning algorithm. Th...
by Beltane
Thu Aug 24, 2006 5:05 am
Forum: Indigo General Stuff
Topic: *arghh* Indigo fatal error while building mesh kd-tree :P ;)
Replies: 2
Views: 1889

Ah, kd-trees. Tricky little devils (or big devils in this case). I spent countless hours knocking bugs out of my own tree builder and I've still not eradicated them all. :evil:
by Beltane
Sat Jul 29, 2006 2:25 am
Forum: Finished Artwork
Topic: Tyson Logo Keychain experiments
Replies: 6
Views: 4387

:D
by Beltane
Wed Jul 26, 2006 12:49 pm
Forum: Indigo General Stuff
Topic: Indigo Logo
Replies: 1
Views: 2383

I hope it's the top one. It's much more elegant.
by Beltane
Sat Jul 22, 2006 12:58 am
Forum: Finished Artwork
Topic: appartements final(s)
Replies: 3
Views: 4320

Fantastic!
by Beltane
Thu Jul 06, 2006 2:16 am
Forum: Off Topic
Topic: finalRender threatened by unbiased competition?
Replies: 10
Views: 5997

finalRender threatened by unbiased competition?

I was browsing the finalRender website and found a "benchmark" test the company had done in order to highlight the difference between their renderer and an unbiased MLT/Monte Carlo approach. Click here to read the article What's interesting is precisely how they managed to end up such a poor image a...
Search found 14 matches • Page 1 of 1