Using the LAB color space to adjust an image

alc59 · **Posted:** Sun Nov 06, 2011 3:53 pm **(#1)**

Ronounours · **Joined:** Jan 03, 2011 **Posts:** 1656

There is a faster way IMHO : G'MIC / Colors / Lab Mixer, and modify the 'A contrast' and 'B contrast' sliders, and you're done.

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

But still nice to know the manual method, in any case. Thanks, alc59!

And thanks to you for sharing the G'MIC method, David.

Ronounours · **Joined:** Jan 03, 2011 **Posts:** 1656

mahvin wrote:

But still nice to know the manual method, in any case. Thanks, alc59!

And thanks to you for sharing the G'MIC method, David.

Well I've also a nice "manual" method to propose ! You only need a console :

Offtopic :

dtschump@nf310-dtschump:~$ gmic ~/work/img/tiger.jpg --rgb2lab -s[-1] c -*[-2,-1] 2 -a[-3--1] c -lab2rgb[-1]

Rod · **Joined:** May 16, 2010 **Posts:** 16126

Thanks for sharing those three different ways to do this folks.