The images are processed through gaussian smoothing, sigma = 2
Marr-Hildreth
Canny
The biggest difference between Marr-Hildreth and Canny detection is that Marr-Hildreth focuses on more details but also picks up much more noise, it is shown more clearly thourgh the following images:
Photo of my desk
Marr-Hildreth (To be honest, I think this looks more realistic)
Canny
Felix
Original Image
The images are processed through gaussian smoothing, sigma = 2