Does horizontal motion blur imply the shape of PSF is rectangular pulse?

1. How many types of motion blur are there?
2. What is motion blur in image processing?

How many types of motion blur are there?

There are two basic kinds of motion blur, a blurred subject with the background in focus, and a blurred background with the subject in focus – also known as panning.

What is motion blur in image processing?

Motion blur is caused by relative motion between an image acquisition system and an object during the exposure window. To restore an image that was degraded by motion blur, the motion path must be estimated.