[Radiance-general] Surface Depth Hallucination

[Greg Ward]

Hi Iebele,

The process to create a texture from flash/no-flash photography works,  
but is fairly involved.  For some time, Mashhuda & I have been working  
on creating a user interface to make the process more straightforward,  
but it is still a work-in-progress after 2 years.

All I have at this point is a set of programs and scripts that rely on  
dcraw and exiftool.  I have compiles for Mac OS X (10.4 and later, PPC 
+Intel), but no easy way to copile on other platforms.  If I provided  
these, you would still need some instructions on how to calibrate your  
flash & lens, and probably a fair amount of hand-holding through the  
process.

In addition to the single flash method described in the Siggraph paper  
and my talk, there is a 3-flash method that works better, but requires  
more hardware.  Here are the relevant papers:

Ward, Greg, M. Glencross, "A Case Study Evaluation: Perceptually  
Accurate Textured Surface Models," Sixth Symposium on Applied  
Perception in Graphics and Visualization (APGV), September 2009.
Glencross, Mashhuda, G. Ward, C. Jay, J. Liu, F. Melendez, R. Hubbold,  
"A Perceptually Validated Model for Surface Depth Hallucination," ACM  
Trans. Graph. (special issue SIGGRAPH 2008), August 2008.
I'm attaching some text describing the process for the single-flash  
method.  If you're still interested after reading all this, and have a  
Mac you want to try it on, I can provide the programs and scripts to  
you in a separate e-mail.

Cheers,
-Greg


> From: Iebele Abel <iabel at iebele.nl>
> Date: June 8, 2010 8:19:08 AM PDT
>
> Dear group,
>
> Two years after Greg's presentation (Fribourg 2008) on Surface Depth  
> Hallucination, I would like to experiment with the suggested  
> procedure within Radiance. The article "A Perceptually Validated  
> Model for Surface Depth Hallucination" says ''Once we have an albedo  
> map and a depth map for our surface, virtually any rendering  
> algorithm may be applied. We use the Radiance
> physically-based renderer." Are there software or resources  
> available which describe in more detail how albedo and depth maps  
> can be achieved and used in Radiance?
>
> My best,
>
> Iebele
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