Search found 19 matches

by joedizzle
Mon May 23, 2016 3:44 pm
Forum: General Development
Topic: pbrt-v2 grid code traversal problem
Replies: 2
Views: 10054

Re: pbrt-v2 grid code traversal problem

Corrected handling of -0 values.

Image
by joedizzle
Mon May 23, 2016 3:34 pm
Forum: General Development
Topic: pbrt-v2 grid code traversal problem
Replies: 2
Views: 10054

pbrt-v2 grid code traversal problem

Hello everyone, I've been writing a small path tracer code in java, referencing both SmallVCM and PBRT. I have noticed some problem with the grid accelerator code of pbrt-v2 in which I've referenced their code (complete port to java) and the specific part is the setting up ray for traversal in the g...
by joedizzle
Mon Jul 14, 2014 8:39 am
Forum: General Development
Topic: Epsilon problem in volumetric scattering of particle
Replies: 2
Views: 1606

Re: Epsilon problem in volumetric scattering of particle

Dade,

Thank you for your insight. A form of rejection sampling as one option or reject the path if necessary. Let me do some test and see.
by joedizzle
Sun Jul 13, 2014 1:05 pm
Forum: General Development
Topic: Epsilon problem in volumetric scattering of particle
Replies: 2
Views: 1606

Epsilon problem in volumetric scattering of particle

Hello everyone, I've been grappling with a problem in which I would like your resourceful help. When doing volumetric scattering of a particle in a medium in which boundaries are involved, for example... outside is void and inside is a material, to check if the ray is within the volume, ray-intersec...
by joedizzle
Tue Dec 24, 2013 3:52 pm
Forum: ompf2
Topic: Merry Christmas Ompf2 Members (2013)
Replies: 1
Views: 3104

Merry Christmas Ompf2 Members (2013)

Hope everyone is enjoying their Christmas holiday. To all ompf members, have a happy new year and a prosperous 2014. Let's render those pixels!!! :lol:
by joedizzle
Wed Jul 31, 2013 11:49 am
Forum: Links & Papers
Topic: BSSRDF Importance Sampling
Replies: 1
Views: 3468

BSSRDF Importance Sampling

From Christopher Kulla's website: "A simple importance-sampling method for rendering subsurface light transport described by a BSSRDF on arbitrary geometry without any pre-computation" https://sites.google.com/site/ckulla/home/bssrdf-importance-sampling I've been waiting eagerly for the pu...
by joedizzle
Sat Jan 26, 2013 3:46 pm
Forum: Links & Papers
Topic: Path Space Regularization
Replies: 12
Views: 7910

Re: Path Space Regularization

Hello all, Just in case if someone's interested, here is the new EG2013 paper of mine about how to deal with singularities in the light transport integrand: http://cg.ibds.kit.edu/PSR.php Hope you'll like it. Anton Great work kaplanyan! I'm quite astonished how simple the implementation is, based o...
by joedizzle
Mon Jan 14, 2013 8:47 pm
Forum: General Development
Topic: modified sensor sensitivity equation
Replies: 2
Views: 1648

Re: modified sensor sensitivity equation

Thank you Spectral, Your derivation wasn't making sense in the essence on whether the P was the pixel location on the image plane or whether it belonged to the surface geometry represented by a light vertex. But it is the pixel location which makes sense in the relation of the camera point (eye) and...
by joedizzle
Mon Jan 14, 2013 1:02 pm
Forum: General Development
Topic: modified sensor sensitivity equation
Replies: 2
Views: 1648

modified sensor sensitivity equation

Hi all, Based on http://graphics.tudelft.nl/~dietger/ survey report, I cannot comprehend on how equation 3.15 was formulated based figure 3.5. Can anyone please expound on the probabilities formulation/derivation. I have also noted some inconsistencies on equation 3.18 and 3.19 whereby inserting equ...
by joedizzle
Thu Nov 15, 2012 6:37 pm
Forum: Visuals
Topic: IGAD Pretty Image Contest 2012
Replies: 3
Views: 5847

Re: IGAD Pretty Image Contest 2012

Ofcourse pic 3!

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