Ad
Ad
Ad
Pages: « 1 [2]   Bottom of Page
Print
Author Topic: Saturation level in DCRAW  (Read 28454 times)
jbrembat
Full Member
***
Offline Offline

Posts: 177


« Reply #20 on: February 12, 2010, 12:27:43 PM »
ReplyReply

Quote from: Guillermo Luijk
what do you mean by XYZ scaling? XYZ is an intermediate colour space to which images are converted prior to final conversion to sRGB, Adobe RGB. In fact I think DCRAw multiplies the RGB -> XYZ and XYZ -> output colour profile matrices to do the conversion in a single step.

The only scaling applied is when white balancing, and that is donde in the RGB Bayer domain, even before demosaicing.
I mean -o 5 option on conversion for XYZ output.

Jacopo
Logged
Hening Bettermann
Sr. Member
****
Offline Offline

Posts: 566


WWW
« Reply #21 on: February 13, 2010, 01:18:25 PM »
ReplyReply

Hi!

> If dcraw is to retain its cutting edge, now is the time to add a '32 bit' switch.

> A 32-bit switch would mean rewriting a good amount of DCRAW's code, pretty sure Coffin doesn't agree.

Maybe Elle Stone is doing (part of) just this with her modification of dcraw:

http://www.freelists.org/post/argyllcms/dc...ted-and-unDnged

"Goals:
(4) Increase the precision of the camera matrix primaries by changing the data type from integer to floating.
   I doubt the increased precision will be visually apparent, but why not - it was an easy change."

Good light - Hening.
   
Logged

Pages: « 1 [2]   Top of Page
Print
Jump to:  

Ad
Ad
Ad