converting RT image pipeline to float

Question

Originally reported on Google Code with ID 437

I started a new branch to convert the RT image processing pipeline to floating point
throughout.  So far I have ported most of the Lab image processing to floating point.
 I am not sure all the image processing tools are working as desired, but basic exposure
adjustments seem to be OK.

The next step will likely be to star converting the RGB processing to floating point,
in particular raw conversion.

For the moment, I would like to ask that I be the only one allowed to check in changes
to this branch; of course, anyone is free to post patches for me to vet for check-in.

Reported by ejm.60657 on 2010-12-26 17:15:30

该提问来源于开源项目：Beep6581/RawTherapee

Answer 1

It always puzzled me why float was not used from the beginning, probably for smaller
memory footprint and speed. I am really looking forward to this change - from both
simpler coding point of view and likely better image quality. 

This will further be useful if RT will get extended into HDR processing in the future.

Reported by michaelezra000 on 2010-12-26 18:18:35