Legacy ImageMagick Discussions Archive

What is the easiest way to fill a opaque color area of an image that has a transparent background with a tile:Image.png and retain the transparent background.
I have no problem using convert fill to change the area to any color.
Also I can convert tile:Image.png compose and composite but that fills in the transparent background.
I have also tried doing with a mask without success.
Thank you
Wayne

One way is to tile out a new image of the size of the area you want to replace, then composite the tiled image over that region (assuming you are talking about a rectangular area.

If might be helpful to see the image you want to start with in order to understand your problem better.

Also please identify your IM version and platform.

I am using Version: ImageMagick 6.8.4-8 2013-04-09 Q16
My base image has a transparent background


I would like to replace the black with this swatch image below and retain the transparent background and tile the image to fit if needed



I am not able to create the mask needed in IM so the one you see below I created manually



I am able to execute the following command to create my final image below
convert green_swatch_200X200.png base_black_mask2.png -alpha off -compose copy_opacity -composite final_image.png

try this (it extracts the alpha channel from the transparent base image)

convert green_swatch_200X200.png \( base_image.png -alpha extract \) -compose copy_opacity -composite result.png

Fred
It worked perfect

Thank you very much for the assist

Wayne

If you have a base tile, you do not need to create the tiled image separately. You can combine it all in one command.


convert \( -size 200x200 tile:tree.gif \) \( base_image.png -alpha extract \) -compose copy_opacity -composite show:

Fred

You are really making my day



Wayne