Search found 83 matches

by MohamedSakr
Wed Sep 03, 2014 1:35 pm
Forum: General Development
Topic: sampling pure specular paths
Replies: 4
Views: 4115

Re: sampling pure specular paths

Hi Mohamed, A very important question indeed. The general problem of finding pure specular paths is tough, as it is equivalent to an arbitrary constraint satisfaction problem, which is proven to be NP-complete (http://en.wikipedia.org/wiki/Complexity_of_constraint_satisfaction). For a practical sce...
by MohamedSakr
Wed Sep 03, 2014 4:41 am
Forum: General Development
Topic: sampling pure specular paths
Replies: 4
Views: 4115

sampling pure specular paths

I need to know an efficient way to sample pure specular paths, I see some papers for anton kaplanyan and jakob, but all of them are working on mutations from MLT (while I don't use MLT) what I want is just the "idea" behind finding the pure specular path, I have my adaptive sample which works pretty...
by MohamedSakr
Fri Aug 22, 2014 6:07 pm
Forum: General Development
Topic: questions about hair rendering
Replies: 5
Views: 4617

Re: questions about hair rendering

@joulson thanks for the link, I took a look and it looks sweet :) @papaboo I remember that embree has good hair tracing algorithm, but I forgot why I didn't use it, after reading sriravic reply I remembered now "because it is only for written for Xeon Phi" @sriravic thanks a lot for the reply and th...
by MohamedSakr
Thu Aug 21, 2014 3:01 am
Forum: General Development
Topic: questions about hair rendering
Replies: 5
Views: 4617

questions about hair rendering

I want to implement hair rendering, but don't know where to start from if there are some good papers about this topic this would be appreciated some questions though: 1- which is better(storing hairs as splines or as triangles) "for memory usage and speed, how it may suit GPU" 2- how it would be int...
by MohamedSakr
Sun Aug 17, 2014 1:51 am
Forum: General Development
Topic: MIS with more than one light
Replies: 1
Views: 4329

Re: MIS with more than one light

read smallVCM http://www.smallvcm.com/
it contains a good MIS implementation, + some good integrators :D
by MohamedSakr
Fri Aug 15, 2014 7:07 am
Forum: General Development
Topic: Comparison of spectral vs rgb rendering?
Replies: 9
Views: 8924

Re: Comparison of spectral vs rgb rendering?

one word, google "PBRT" :D
by MohamedSakr
Thu Aug 14, 2014 8:12 am
Forum: General Development
Topic: how to modify light "power and color" after rendering
Replies: 14
Views: 10243

Re: how to modify light "power and color" after rendering

I see, I will check more about cameras soon :)
thanks a lot Dade
by MohamedSakr
Thu Aug 14, 2014 3:39 am
Forum: General Development
Topic: Agreement of Light Tracing and Path Tracing with a Thin Lens
Replies: 3
Views: 3226

Re: Agreement of Light Tracing and Path Tracing with a Thin

I guess what you mean by: --If the sensor and light are the same distance from the lens, the results agree --If the light is moved closer, it appears darker in the light tracer render --If the light is moved farther, it appears brighter in the light tracer render is that at case 2 and 3 the camera p...
by MohamedSakr
Wed Aug 13, 2014 1:19 pm
Forum: General Development
Topic: how to modify light "power and color" after rendering
Replies: 14
Views: 10243

Re: how to modify light "power and color" after rendering

what about camera parameters? like ISO