[Radiance-general] ximage vs. pcond

[Roland William Fleming]

Hi ---

Why does pcond produce a (slightly) different tonemapping from ximage 
-e auto ?  The contrast is better with ximage and I would like to take 
the output as my final image.  Is there an easy way to do this ?  I use 
the default values for all options.

A few things I've tried:

ximage -e auto hdr.pic
# produces nice high-contrast rendition of image

pcond hdr.pic ldr.pic
ximage ldr.pic
# tonemapping is inferior

ra_tiff ldr.pic ldr.tif
xview ldr,tif
# tonemapping is still not good.  This suggests that it is not the 2.2 
gamma of ximage that makes the images look good, because ra_tiff also 
uses 2.2 gamma correction (according to the documentation).

  ximage -e auto ldr,pic
# tonemapping is better, but still not quite as good as the original.


Thanks for any tips!
Roland Fleming


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