Information in this article applies to:
Article ID: NFL1039 — Created: 5 May 2017 — Reviewed: 13 Dec 2020
What does the blur filter do?
The blur filter has the effect of blurring an image. It is a convolution that replaces each pixel with a weighted sum of the initial pixel value and its neighbors.
Blur Filter — Before
Blur Filter — After
Blurring images can help reveal colors by hiding shapes and shadows. There are several uses for the blur filter:
A technique that may have merit for some images involves blurring an image before and/or after sharpening it to reduce artifacts.