Noise filtering and enhancement of seabed topography for airborne laser bathymetry

A technique for noise filtering and enhancement of seabed topography of coastal waters is presented. The characteristics of the noise with which the bathymetric signals are contaminated are studied. A simple, yet efficient, data segmentation and interpolation method for regularizing irregularly spaced data is developed. Then a 2D noise filtering algorithm based on the use of local statistics of depth measurements is described and applied to the data.