Replacing a color with rmagick

Question

I'm currently stuck on a - more or less - simple task. I need to replace some colors with other colors in an image using rmagick.

I found two approaches.

• Looping through every pixel to replace it's color
• Color to alpha, set background color, save as new image.

Is there a better solution?

Answer 1

Finally, I found the answer myself:

Using Magick::Image#opaque_channel