On my last post I wrote about the “Liquid Rescale Plug-in” for Gimp and published an image that I resized. Now I’ll show how to make it step-by-step.

First I choose a picture. The original size was 2048×1536 pixels.

Then I choose Layer > Liquid Rescale…

I changed the width to 1500 and “OK”:

Well, this is no good. The image was resized, but the plug-in didn’t know what was important on the image.

So I backed up the original and created a new transparent layer to identify what was important on the image:

On this new layer I filled with black what I want to preserve (I think it would be any color).

The new layer after painting (the white part is transparent):

Following, I selected the photo layer, then I choose Layer > Liquid Rescale…, but now I set my new layer as the area to preserve.

Finally, I executed the script and voi là!

OBS: I did the same thing on my three years old computer running Ubuntu Feisty (Athlon XP 2000+, 512Mb RAM DDR), and on my new computer on my work, running win XP (Pentium 4, 3.0, 512Mb RAM DDR2). On my computer the process was really really really faster.