How can I loop through each pixel in an image and get their red,green,blue values? I also would like to be able to create a new image using those values (modified, for example set red=red*0.5)
I know Karl did a great project Color Reading And Writinghttp://www.squeakland.org/showcase/project.jsp?id=7044 which I could use, but would like to introduce some of the kids to squeak.
Thanks, Stephen