Legacy ImageMagick Discussions Archive

Is it possible to take 2 images, make some processing with them, then export them in 2 different variables (do not save to files) and then use these variables as inputs for other ImageMagic commands?

What type of variables? What is your script language? What version of IM?

You can write to "txt:" or non-compressed PNM format and save that in a bash variable:

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myimg=$(convert rose: txt:)

But there is a large overhead in converting to text and back. You should also consider using pipes, probably using IM's built-in "miff" format.

When I said "variables" I didn't mean txt. I meant saving images to some instances inside ImageMagic (save to RAM, not to hdd).

IM can images save to RAM for use later within the same command. But they can't be used in later commands. Memory and commands don't work that way.

You might consider a RAMdisk (eg see https://www.ghacks.net/2017/04/03/the-b ... r-windows/) or SSD.

Piping is a common technique.

I'm not sure that RAMdisk is the best for this case. Let me ask in another way. Lets say I have 3 input images: 1.jpg, 2.jpg, 3.jpg.
I'd like do increase the first one by 10%, then rotate it 90 degrees clockwise, then save it as out1.jpg.
The second image to reduce by 20%, then overlay it to right bottom corner of out1.jpg and save it to out2.jpg.
The third one combine horizontally with 1.jpg (original) and out2.jpg using +append.

How does ImageMagic line will look like?

See parenthesis processing and clones. You should be able to do that all in one command.

https://imagemagick.org/Usage/basics/#parenthesis
https://imagemagick.org/Usage/basics/#clone

If I understand your request, try this (unix syntax)

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convert \( 1.jpg -resize 110% -rotate 90 \) \
\( +clone \( 2.jpg -resize 80% \) -gravity southeast -compose over -composite \) \
3.jpg \
+gravity +append \
result.jpg

___________________________

Helpful pages:

http://www.imagemagick.org/discourse-se ... f=1&t=9620
http://www.imagemagick.org/script/comma ... essing.php
http://www.imagemagick.org/Usage/reference.html
http://www.imagemagick.org/Usage/
https://github.com/ImageMagick/usage-markdown

fmw42, thank you

How does this " \( " change in windows?

See my edits above. For windows, remove the \s with the \( and for the end of line \ change to ^

see https://imagemagick.org/Usage/windows/

Fred's version doesn't save out1.jpg and out2.jpg. But I'm not sure if you really wanted that.

Is it possible to do several out files?

Insert "+write out1.jpg" or whatever.

Here in brackets?

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convert \( 1.jpg -resize 110% -rotate 90 +write out1.jpg \) \
\( +clone \( 2.jpg -resize 80% +write out2.jpg \) -gravity southeast -compose over -composite \) \
3.jpg \
+gravity +append \
result.jpg

What does +write do?

See http://www.imagemagick.org/script/comma ... .php#write

Thank you

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