Search found 281 matches

by ingenious
Fri May 09, 2014 8:32 pm
Forum: General Development
Topic: Colibri Renderer
Replies: 12
Views: 10891

Re: Colibri Renderer

I wish my first post here was so impressive!

Great job and welcome to the forum! Love your lady-parts. Though the silhouette of the object on the 4th row looks like a man-part at first glance :twisted:
by ingenious
Fri May 09, 2014 2:48 pm
Forum: General Development
Topic: My Optix porting of SmallVCM (only PathTracer & BDPT)
Replies: 24
Views: 20527

Re: My Optix porting of SmallVCM (only PathTracer & BDPT)

For the results I presented in my sketch, I used a variation of photon tracing algorithm which traces one bounce ray and generates one photon per pass (similar to path tracing with persistent threads). The hash table is created after each trace call, so lengths of paths are irrelevant. In this case...
by ingenious
Thu May 08, 2014 5:42 pm
Forum: General Development
Topic: My Optix porting of SmallVCM (only PathTracer & BDPT)
Replies: 24
Views: 20527

Re: My Optix porting of SmallVCM (only PathTracer & BDPT)

This paper is also quite relevant to this discussion:

http://cgg.mff.cuni.cz/~jaroslav/papers ... /index.htm

It's first-authored by the main author of SmallVCM.
by ingenious
Mon Apr 28, 2014 5:15 pm
Forum: General Development
Topic: UPS vs VCM?
Replies: 9
Views: 6369

Re: UPS vs VCM?

* is there a big difference between VCM and UPS? "in other words which parts should I change to convert smallVCM to UPS" The answer is surprisingly simple: nothing ;) The actual algorithm you need to implement is the same for both methods. The VCM and UPS papers simply arrive at this algorithm in d...
by ingenious
Sat Apr 26, 2014 1:25 pm
Forum: Links & Papers
Topic: Joint Importance Sampling of Low-order Volumetric Scattering
Replies: 8
Views: 11976

Re: Joint Importance Sampling of Low-order Volumetric Scatte

Hi guo. We really need the MathJax plugin, indeed. I had to paste your questions in a LaTeX document in order to read them :) Thanks for reporting the errors in equations (42) and (46)! I re-checked them and indeed it seems you're right about both. The same error from (46) also appears in (50). I wi...
by ingenious
Thu Apr 17, 2014 3:04 pm
Forum: Visuals
Topic: Veach's room scene pimped
Replies: 5
Views: 11112

Re: Veach's room scene pimped

Indeed, the volume caustics are subtle but nice. Here's a visualization of length-4 paths only, where these caustics are more prominent. It'd be also cool to reproduce Veach's image pyramid with the contributions of the individual techniques.
Room_length4.png
Room_length4.png (839.28 KiB) Viewed 11026 times
by ingenious
Thu Apr 17, 2014 10:43 am
Forum: Visuals
Topic: Veach's room scene pimped
Replies: 5
Views: 11112

Re: Veach's room scene pimped

The image was rendered on the CPU using an algorithm I've been trying to publish unsuccessfully for some time (I suspect due to some prior work on this topic). I call it Overnight Rendering with Bidirectional Path Tracing ;) But actually the image looks pretty good already after 1 hour in my rendere...
by ingenious
Thu Apr 17, 2014 9:35 am
Forum: Visuals
Topic: Veach's room scene pimped
Replies: 5
Views: 11112

Veach's room scene pimped

Last night I played with my... ray tracer, and decided to give a shot at pimping Veach's famous room scene a bit. Here's the result:
Room.png
Room.png (851.87 KiB) Viewed 11112 times
And here's Veach's original:
Veach_room.png
Veach_room.png (374.81 KiB) Viewed 11112 times
by ingenious
Tue Apr 15, 2014 10:32 am
Forum: Scratchpad
Topic: Caustics causing trouble in London
Replies: 4
Views: 13655

Re: Caustics causing trouble in London

toshiya wrote:All architectural designers seriously need to use a rendering algorithm that can properly handle caustics!
Shameless self-promotion! :mrgreen:
by ingenious
Sun Apr 13, 2014 9:41 am
Forum: Scratchpad
Topic: Caustics causing trouble in London
Replies: 4
Views: 13655

Caustics causing trouble in London

A bit old, but awesome -- a curved reflective building in London casting a caustic on a street, heating the area to up to 93 degrees Celsius :D News report (video): http://www.theguardian.com/uk-news/video/2013/sep/03/london-walkie-talkie-skyscraper-video Melted car (pics): http://www.dailymail.co.u...