dipityPix app

Friday, June 26, 2015

First real test of new spectral renderer

I just ran my first serious end to end test of my (still primitive) spectral renderer.   I turned to the trusy Macbeth color checker (data from BabelColor which Brian Cabral turned me onto).   I used Chris Wyman's approximations to the XYZ tristimulous curves and they were so much more pleasant than typing that junk it.  This is the chart with just a uniform background(lambda) = constant and no lights.  Looks like it all works fine.  This was a great test case (which is why everybody uses it for spectral work) and it shook out several bugs.


3 comments:

Michael Taylor said...

Your link to "Chris Wyman's approximation" is broken.

Michael Taylor said...

I believe this is the correct link to Wyman's approximation.
https://research.nvidia.com/publication/simple-analytic-approximations-cie-xyz-color-matching-functions

Peter Shirley said...

Fixed. Thank you!