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Image correction
Posted: Sat Oct 01, 2005 9:17 pm
by thire
It would be cool to have an option to do some auto-correction of images (brightness, contrast, gamma, ...). Are there some algorithms to estimate "good" values?
Re: image corretion
Posted: Sun Oct 02, 2005 12:42 pm
by xnview
thire wrote:It would be cool to have an option to do some auto-correction of images (brightness, contrast, gamma, ...). Are there some algorithms to estimate "good" values?
You have auto levels and auto contrast
Posted: Sun Oct 02, 2005 12:50 pm
by thire
oh, yes, I see. In the menu. Sorry.
If there was an "auto"-button in the adjust->brightness... dialog it could be helpful.
sorry for my noise.
th
how
Posted: Sat Aug 19, 2006 6:02 am
by geometra
Hi Pierre:
Can you explain how do you apply auto levels transformation?
I know how Photoshop does it because it is explained at its help. They cut the histogram at the tails by 0.5% of the values previous to the expansion. Are you making any of this? It is important to me to know if I will loos some values if I apply auto-levels and how many.
Congratulations for your work!
Re: how
Posted: Sat Oct 07, 2006 7:56 am
by xnview
geometra wrote:Hi Pierre:
Can you explain how do you apply auto levels transformation?
I know how Photoshop does it because it is explained at its help. They cut the histogram at the tails by 0.5% of the values previous to the expansion. Are you making any of this? It is important to me to know if I will loos some values if I apply auto-levels and how many.
Congratulations for your work!
Yes i cut histogram too