Welcome to Fauxtoshop!
Enter name of image file to open (or blank to quit): stanford-oval.jpg
Opening image file, may take a minute...
Which image filter would you like to apply?
	1 - Scatter
	2 - Edge detection
	3 - "Green screen" with another image
	4 - Compare image with another image
Your choice: 3
Now choose another file to add to your background image.
Enter name of image file to open: bad-file-name.oops
Opening image file, may take a minute...
Enter name of image file to open: green-godzilla.png
Opening image file, may take a minute...
Now choose a tolerance threshold: -1
Now choose a tolerance threshold: 300
Now choose a tolerance threshold: 42
Enter location to place image as "(row,col)" (or blank to use mouse): what do you mean??
Enter location to place image as "(row,col)" (or blank to use mouse): (-999,-456)
Enter location to place image as "(row,col)" (or blank to use mouse): (90,250)
Enter filename to save image (or blank to skip saving): stanford-godzilla.png

Enter name of image file to open (or blank to quit): stanford-godzilla.png
Opening image file, may take a minute...
Which image filter would you like to apply?
	1 - Scatter
	2 - Edge detection
	3 - "Green screen" with another image
	4 - Compare image with another image
Your choice: 4
Now choose another image file to compare to.
Enter name of image file to open: expected-output-stanford-greenscreen-godzilla-42-90-250.png
Opening image file, may take a minute...
These images are the same!

Enter name of image file to open (or blank to quit): 
Exiting.