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nakko 01-30-2007 03:30 PM

GIMP: Apply color tool to ALL layers?
Using GIMP, how do I apply Threshold or Levels to an entire image, meaning all layers throughout the image?

As you can imagine, applying Threshold of a certain value to each layer of a 90-layer image is exceptionally tedious.

PLEASE NOTE: Threshold and Levels are NOT FILTERS, so "Filter All Layers..." would not have anything to do with this problem. I have looked there. I tried it. (Unless you know of some way of making Threshold et alii into a filter.)

pixellany 01-30-2007 03:50 PM

It has never occurred to me to try this in either GIMP or Photoshop. Normally, anything that is to be applied to all layers would simply wait until the image was flattened.

I'll go poke around a bit, but don't hold your breath...;)

nakko 01-30-2007 03:52 PM

The final output of this image will not be flattened, ever. The final output will be a layered image. (i.e. animation)

pixellany 01-30-2007 04:54 PM

I found no way to do this in GIMP. Note that Photoshop allows linked layers, where it seems that GIMP does not. I do not know if the layer linking would help.

nakko 01-30-2007 04:59 PM

Linked layers only applies to some basic transforms, like moving and rotating. So, linking layers will not help.
My image has 65 layers, and I basically gave up and am going through each one sequentially. It's helped to speed things up a little bit to add the Threshold tool to the toolbox:
Dialogs -> Tools -> Click the eye next to Threshold
Still at least 10 seconds per layer...

Oh well. =P

spacegoblin3099 11-15-2015 01:59 AM

still intertested in doing this with gimp
only I'm interested in applying blur filter to selected area of 150+ layers for animation. It's been some years, anyone know if this is possible with gimp yet? (ps isn't an option for me)

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