Use Image checkpoint to test for an empty region
I have an area on my web page to test, which is basically a representation of a chart with a line overlay.
The curve of the line will vary, depending on the source data I am pulling into the we...
The picture without the curve is your "baseline". The "mask" file is as separate image consisting only of white and black spaces, the white space being what you want to compare, the black being what you want to have ignored.
