Batch Processing Question

Wallace · **Posted:** Mon Jun 29, 2015 12:06 am **(#1)**

I recently found a bunch of PNG (Portable Network Graphics) images, about 468 of them to be exact. These image were posted on deviantart as gradients for use with the program Mandelbulber.

I would like to know if I could use the bimp plugin to batch process these images, by using the Gradient from image plugin. To turn these images into Gimp gradients.

Here are 2 such images that are part of the 468 images. All are more or less about the same size.

Attachment:

226.png [ 656 Bytes | Viewed 4222 times ]

Attachment:

225.png [ 693 Bytes | Viewed 4222 times ]

Any ideas on how I can go about making all these images into Gimp gradients. Without having to open them all individually?

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

You can do it with G'MIC (the command line tool).
Using bash, you can type :

Code: Select all

$ for i in *.png; do base=`basename $i .png`; gmic $i -rows 50% -output_ggr $base.ggr,$base -q; done

And it will create as many .ggr files than you have .png files.
Tell me if you want me to do this for you.

Wallace · **Posted:** Mon Jun 29, 2015 1:56 am **(#3)**

Ronounours wrote:

You can do it with G'MIC (the command line tool).
Using bash, you can type :

Code: Select all

$ for i in *.png; do base=`basename $i .png`; gmic $i -rows 50% -output_ggr $base.ggr,$base -q; done

And it will create as many .ggr files than you have .png files.
Tell me if you want me to do this for you.

If you would do this for me, that would be really great.

Here is all 468 PNG image...

Attachment:

468 Mandelbulber Gradients.zip [1.35 MiB]
Downloaded 251 times

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

Here they are.

Wallace · **Posted:** Mon Jun 29, 2015 2:43 am **(#5)**

Ronounours wrote:

Here they are.

"Get out of town!"

That's fabulous of you to do this.

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

You're welcome. It took only a few seconds to convert.
Just a remark though : the images are converted 'colors by colors', so each gradient has at the end as many colored keypoints as in the original color image,
which means those gradients are quite hard to edit. But if this doesn't matter too much, then everything is fine

Wallace · **Posted:** Mon Jun 29, 2015 3:02 am **(#7)**

Ronounours wrote:

You're welcome. It took only a few seconds to convert.
Just a remark though : the images are converted 'colors by colors', so each gradient has at the end as many colored keypoints as in the original color image,
which means those gradients are quite hard to edit. But if this doesn't matter too much, then everything is fine

I see what you mean.

That's okay with me.
Again, thank you so much. :jumpclap