[Radiance-general] Color Bleeding

[Carsten Bauer]

Hi Marcus,

one hint concerning the expected appearance:

I assume that the image map you use for the floor originally is a photo 
(TIFF, JPG, TGA or whatever), converted to a Radiance pic. In the 
conversion process a gamma correction is applied (unless you set the 
option -g 1.0).

The gamma correction makes the images appear darker, means if you click 
on your photo in an image editing program, and it gives you, say, 
0.6/0.5/0.1 as rgb (or 153/127/25 in the 0-255 range), the corresponding 
r/g/b coefficients will be lower after the import into Radiance.

Only if you set -g 1.0 (e.g. in ra_t16 -r -g 1.0 test.tga test.pic) and 
then map the image onto a plastic with rgb = 1/1/1, you'll get the 
original r/g/b values form the picture (regardless if they're physically 
meaningful or not), means the appearance will be the same as if you use 
a 'plastic' with rgb = 0.6/0.5/0.1 directly.

-cb


PS
nice images...is this the room in the registry office where Prince 
Charles and Camilla are going to hold their wedding???? Especially the 
pink version would suit perfectly for it !!