What is a blurred image?

By definition an image is blurred if you cannot see things clearly due to a number of factors.

For example, google Earth and google Maps imagery can be blurred when a given area is at lower resolution than its neighboring area and appear "pixelated" when zoomed in too closely.

In some cases regions have been intentionally digitally obscured or blurred for a number of reasons. google, for example, automatically detects licenses plates and faces in its Street View imagery and digitally blurs the pixels for privacy and security concerns.