Last updated on August 21, 2014
GIMP has a desaturate option. Basically it changes your color picture to a grayscale one. When you desaturate an image, you get a prompt saying, “Choose shade of grey based on:” with three options, “Lightness”, “Luminosity”, and “Average”
I’ve always wondered what the difference was, so I tried all three on the same picture to compare. (It’s a snapshot of my car pulling into work!)
Can you tell a difference? I sure can’t.
The reason I thought of doing this test is because I’ve always had this crazy idea to build a 1:1 replica of an Abrams tank, and use it at airsoft games. It would be fitted with a nerf cannon and a high rate of fire coaxial machine gun. Naturally, It needs FLIR, but that stuff’s expensive. I want to simulate FLIR using inexpensive surveillance cameras (no IR filters!), and to do so I would need to remove all the color from the video feed, pump up the contrast, and who knows what else. This test was inconclusive, more experimenting is required!
Looking for VOCALOID trading cards?