Image Filtering

Question 1

What is the difference between convolution and cross-correlation?

Answer 1

Convolution “flips” the kernel, cross-correlation doesn’t.

Question 2

What is the main advantage of separating 2D filters into 1D

Answer 2

Less computational complexity

Question 3

Can all filters be separated?

Answer 3

No

Question 4

Name a non-linear filter

Answer 4

The median filter