Imaging　in　poor　weather　is　often　severely　degraded　by　scattering　due　to　suspended　particles　in　the　atmosphere　such　as　haze,　fog　and　mist.　Poor　visibility　becomes　a　major　problem　for　most　outdoor　vision　applications.　In　this　paper,　we　propose　a　novel　fast　defogging　method　from　a　single　image　of　a　scene　based　on　a　fast　bilateral　filtering　approach.　The　complexity　of　our　method　is　only　a　linear　function　of　the　number　of　input　image　pixels　and　this　thus　allows　a　very　fast　implementation.　Results　on　a　variety　of　outdoor　foggy　images　demonstrate　that　our　method　achieves　good　restoration　for　contrast　and　color　fidelity,　resulting　in　a　large　improvement　in　image　visibility.　©　2010　IEEE.