Compose into new image

[eddieconnecti]

Hi there! I would like to copy an image into a new, blank image, and overwrite the overlay by the way and can´t get it to work...

Step by step what the command should do:
- create a new image width size 200x200, xc:none
- compose a source image "c:\image.png" onto image at position 10x10
- save as "c:\image.png"

The trick should be not to create a new image in the filesystem, but to create a new blank one on the fly, copy the source image at given position, and save as the source file to overwrite it.
I would like to use this method to add padding to existing images.

This code does not work:

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C:\Program Files\ImageMagick\convert.exe -size 200x200 xc:none\\ C:\Program Files\ImageMagick\composite.exe -geometry +x+y -compose c:\image.png c:\image.png

Thanks for any help!

[glennrp]

"-compose" takes an operator, e.g., "-compose over"

[Bonzo]

Try something like:

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C:\Program Files\ImageMagick\convert.exe -size 200x200 xc:none c:\image.png -geometry +x+y -composite c:\image.png

[anthony]

"-compose" takes an operator, e.g., "-compose over"

That is also the default "setting", so is generally not needed. The operator that is needed is -composite. and '+x+y' should be +10+10 for the offset to actually work!

however in this case you can also use -flatten that can generate that canvas for you...

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convert.exe c:\image.png -background none -repage 200x200+10+10 -flatten  c:\image.png

or even use extent though it seems strange that you need to specify a negative position rather than an image position as such I probably would not rely on it remaining this way, as it seems nonsensical!

Code: Select all

convert.exe c:\image.png -background none -extent 200x200-10-10  c:\image.png