[Radiance-general] falsecolor weirdness

[John An]

Preface:
I'm sure you're all getting sick of me asking things that are probably 
common knowledge to you all, but I have another question.  I searched 
the web, and went through Rendering with Radiance, but still have not 
been able to find the answer to my problem.  I have a presentation 
tomorrow morning, and it seems like while I will have nice looking 
images, the quantitative evaluation may be lacking.

Problem:
When I generate a falsecolor image of an office space I rendered, I get 
a good image with a dynamic range.  The command I use is:
falsecolor -s 400 -i image.pic > image2.pic

The image I rendered was a standard Radiance image that calculates the 
radiance/luminance.

The when I try to get luminance reading from the falsecolor image, the 
values I get are confounding.  The brightest areas (the bright red 
regions) always get at reading of 47.8L.  Surrounding areas typically 
have higher values.

To try to test what was going on, I clicked on the color scale on the 
falsecolor image and got readings which were not even close to what the 
scale indicates.  The L values are maximum around the yellow/green 
section (reading at about 120L), and decrease going toward both the 
blue and section of the scale.

If anyone is reading this message on a Sunday evening, I would REALLY 
appreciate it if you could fill me in on how to correct this problem.

Again, apologies if I should have RTFM, but I tried, and have had no 
success thus far.


John