Legacy ImageMagick Discussions Archive

After a ton more playing around I get what I wanted and then some! I converted the red stripes to black. Probably not needed considering I convert it to an alpha map. convert zwuvgCg.png \ \( +clone -fill "rgb(255,0,0)" -colorize $C,$C,$C,0 -level "0%,100%,0.8" \) \ \( 2QjTGat.png -alpha extract ...

I think perhaps I'm going about using imagemagick the wrong way to accomplish what I want. The more I play with atop and/or the more I increase the opacity of the overlay the more it overrides the source image causing details to be lost. Which is exactly what atop is meant to do but now I realize ...

Is there a place that explains "-channel A -evaluate Multiply 0.75 +channel"? Or can you explain it?

I had "-crop "$size"" so as to crop the 2048x2048 overlay to the dimensions of the source image. As you said is doesn't seem to actually do anything. Well crap. The "-channel A -evaluate Multiply 0.75 +channel" gets me very very close! Now I have something to play with. Thanks so much!

Originally I created this finished image in GIMP by simply change the overlay mode to color and setting the opacity to 75%. http://i.imgur.com/Vv8h0Jr.png This file needs regenerated occasionally when the source concrete file changes. After doing this manually I figured I could automate it using ...