Legacy ImageMagick Discussions Archive

You can use this general pattern:

magick \
in.png \
-fill "#012345" -opaque "#234567" \
-fill "#543210" -opaque "#654321" \
out.png

This replaces all pixels of "#234567" with "#012345", and so on.

Never use JPG for this type of work unless you really have to, because JPG is lossy, and ...

I'm use Linux.
magick -version
Version: ImageMagick 7.0.8-26 Q16 x86_64 2019-02-05 https://imagemagick.org
Copyright: © 1999-2019 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules OpenCL OpenMP
Delegates (built-in): bzlib cairo fontconfig ...

if my code does not work.


Your code works great.

The question was from the desire to quickly use the logo template with my text.
But I realized that it was better to do it from scratch for more control.As they say at us:"Quickly even cats are not born".

Excellent as always. Thanks a lot.

I think the OP doesn't want to change the image, but just the metadata property "label", like this:
magick in.png -set label batjka911 out.png


It works to change metadata property "label", but I needed to change the label content.


You can do that as follows, but you need to know the font ...

I'm use Linux.
magick -version
Version: ImageMagick 7.0.8-25 Q16 x86_64 2019-01-28 https://imagemagick.org
Copyright: © 1999-2019 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules OpenCL OpenMP
Delegates (built-in): bzlib cairo fontconfig ...

To crop an region, do some operations on it, then composite it back on the original as fmw42 suggested can be pretty simple. This command...

magick lines.jpg \( +clone -crop 90x70+10+0 -swirl 400 \) -flatten reg_lines.jpg

... does exactly that. Inside the parentheses it clones the input ...

Thanks for the quick response
So another solution would be to crop the region, do the swirl, then composite the processed image back. and practical advice.

I am not a Linux guru to integrate two versions IM on one computer. Therefore, I will try to use KNOPPIX for various experiments. True in ...

I'm use Linux.
magick -version
Version: ImageMagick 7.0.8-25 Q16 x86_64 2019-01-28 https://imagemagick.org
Copyright: © 1999-2019 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules OpenCL OpenMP
Delegates (built-in): bzlib cairo fontconfig ...