Detection of Lofar lines

Abstract

The problem of extracting spectral lines from sonar images is treated using a complete scheme that combines an edge detector with a line tracking process. That is, the edge detection process allows filtering the sonar image and finding a region (zero-crossings of the second derivative of the sonar image) that includes a spectral line. The founded region is then used to initialize and to limit the extent of the line tracking process. Comparative performance results confirm the efficiency and the reliability of the proposed approach.