blend_seamless by command line

kfadelk · **Joined:** Feb 25, 2016 **Posts:** 3

Hi all

Could you help me to merge properly a little pattern image into a bigger one using blend_seamless option of command line at custom position?

With this basic command-line, I cannot select the position: pattern is copied at the center of bigger one.

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$> gmic -i road.jpg -i car.png --blend_seamless[0,1] 0,10%,4% -display

Except position, it works well!

I tried this (put pattern into big empty image before seamless blending), but it fails:

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$> gmic -i road.jpg -i 800,600,1,4 -i car.png --blend[1,2] alpha --blend_seamless[0,3] 0,10%,4%

It seems the seamless blending can not operate on largely empty image pattern.

road.jpg and car.png are attached.

Thanks for help!

sallyanne · **Posted:** Thu Feb 25, 2016 8:04 am **(#2)**

Never tried custom set - up for this but it actually works. Seam-lessy blending into the background.
I will try and show you what I get
Opening both layers then G"MIC, scrolling down to layer's, blend seamless, making sure input layers is set to all. This is what I got

kfadelk · **Joined:** Feb 25, 2016 **Posts:** 3

Yes, I get the same result with the GMIC plugin for GIMP, but I really need to use the command line. I would like to blend the same pattern in a large set of images, by shell script.
I'm pretty sure I missed a command option!

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

One way to do this, is to resize your foreground sprite first, then shift it with the desired coordinates you want for the location :

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$ gmic road.jpg car.png -r. [0],[0],1,4,0 -shift. 150,200 -blend_seamless

Here, replace 150,200 by the coordinates you want.

kfadelk · **Joined:** Feb 25, 2016 **Posts:** 3

Nice, this is exactly what I want!

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$> gmic -i road.jpg -i car.png -r[1] [0],[0],1,4,0 -shift[1] 200,200 --blend_seamless[0,1] 0,10%,4% -display

Thanks!