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
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
SingleFlashProcess.txt (4.4 KB)
···
From: Iebele Abel <[email protected]>
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
Hi Greg,
I've had read both articles, and the text describing the process looks
doable. We use the same camera and have several flashes. Using 1 flash seems
better now, since I am not able to build the 3-flash controller (maybe
later). Mac is fine.
Anyway, I would be glad to try it,
A soda-water cheers,
Iebele
···
2010/6/8, Greg Ward <[email protected]>:
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:
1. Ward, Greg, M. Glencross, "A Case Study Evaluation: Perceptually
Accurate Textured Surface Models<http://www.anyhere.com/gward/papers/APGV09final.pdf>,"
Sixth Symposium on Applied Perception in Graphics and Visualization (APGV),
September 2009.
2. Glencross, Mashhuda, G. Ward, C. Jay, J. Liu, F. Melendez, R.
Hubbold, "A Perceptually Validated Model for Surface Depth
Hallucination<http://aig.cs.man.ac.uk/research/daedalus/hallucination.php>
," *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 <[email protected]>
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
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general
--
Met vriendelijke groet / With kind regards,
Iebele Abel
Studio Iebele Abel
Kazernestraat 88
2514 CW Den Haag
The Netherlands
Phone +31(0)70 363 18 99
Mobile +31(0)6 101 808 10
Fax +31(0)70 365 38 55
iabel @ iebele dot nl