chapter  11
25 Pages

Detecting and Counteracting Atmospheric Effects

WithLynne L. Grewe

With the increasing use of vision systems in uncontrolled environments, reducing the effect of atmospheric conditions such as fog in images has become a significant problem. Many applications (e.g., surveillance) rely on accurate images of the objects under scrutiny [Brooks 98]. Poor visibility is an issue in aircraft navigation [Huxtable 97, Moller 94, Oakley 96, Sweet 96], highway monitoring [Arya 97], and commercial and military vehicles [Barducci 95, Pencikowski 96]. Figure 11.1 shows an example scene from a visible spectrum camera where the presence of fog severely impedes the ability to recognize objects in the scene. Building in foggy conditions, visibility of objects is impaired.