Forest Monitoring System with Virtual Fencing

Automatic Image De-fencing System

Tourists and Wild-life photographers are often hindered in capturing their cherished images/videos by a fence that limits accessibility to the scene of interest. The situation has been exacerbated by growing concerns of security at public places and a need exists to provide a tool that can be used for post-processing such “fenced videos to produce a “de-fenced” image. There are several challeng...

Boreal Forest Monitoring with ERS Coherence

C-band repeat-pass InSAR coherence from ERS-1/-2 satellites has been shown to be a valuable parameter for retrieval of stem volume in boreal forests, being more accurate than microwave radar backscatter. In this work we have presented a procedure to estimate stem volume from coherence measurements, obtained with careful InSAR processing due to the low coherence of forested areas. At first a bor...

Intelligent Forest Fire Monitoring System – from idea to realization

Wild res, including forest res, are natural phenomena that cause signi cant economic damage and have quite devastating effect to the environment all over the world. Early re detection on one side and quick and appropriate intervention on the other one, are of vital importance for wild re damage minimization. The re season 2003 was quite severe one, particularly in Split and Dalmatia County. Pro...

Fast Fencing

We consider very natural “fence enclosure” problems studied by Capoyleas, Rote, and Woeginger and Arkin, Khuller, and Mitchell in the early 90s. Given a set S of n points in the plane, we aim at finding a set of closed curves such that (1) each point is enclosed by a curve and (2) the total length of the curves is minimized. We consider two main variants. In the first variant, we pay a unit cos...

A Less Intrusive System Monitoring Scheme for Distributed Virtual Environments