|Photo Restoration Repairing damaged photos|
| ||Thread Tools|
Frequency Separation vrs Lab Lightness channel
Re: Frequencey Separation vrs Lab Lightness channe
I think you're confusing two issues here :-).
Frequency separation is used to work on different levels of spatial frequency at a time, e.g. grunge and detail.
The Lightness channel of LAB on the other hand is used to work on luminosity alone instead of working on color and luminosity simultaneously like you would in RGB (if you're not setting the mode to "Luminosity").
A derivative of the frequency separation technique could be used though, in which you'll just desaturate the bottom layer and use Apply Image to find the difference on the top layer.
But then again, why not simply use "Luminosity" mode?
|Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)|
|Thread||Thread Starter||Forum||Replies||Last Post|
|question about frequency separation method||Caravaggio||Photo Retouching||12||07-16-2013 11:21 PM|
|Tutorial 05: Converting a Color Image to Black and White grayscale BW||DannyRaphael||Photo-Art 101||17||05-22-2011 04:55 PM|
|Action for Frequency Separation||jonathan_k||Photo Retouching||13||04-15-2011 12:17 PM|
|Extended frequency separation||fraiseap||Photo Retouching||16||12-31-2010 12:33 PM|
|Lightness channel sharpening and printing in Lab mode||cocasana||Input/Output/Workflow||5||09-30-2005 08:21 AM|