Title :
On the bias of the likelihood ratio edge detector for SAR images
Author :
Germain, Olivier ; Réfrégier, Philippe
Author_Institution :
Ecole Nat. Superieure de Phys., Marseille, France
fDate :
5/1/2000 12:00:00 AM
Abstract :
The likelihood ratio edge detector is an efficient filter for the segmentation of SAR images. The authors show that this filter provides biased location of the edge if it is not an “ideal” step edge of known orientation. A simple model enables the authors to interpret this observation and to evaluate the bias
Keywords :
edge detection; geophysical signal processing; geophysical techniques; image segmentation; radar imaging; remote sensing by radar; synthetic aperture radar; terrain mapping; SAR; bias; biased location; edge detection; filter; geophysical measurement technique; image segmentation; land surface; likelihood ratio edge detector; radar imaging; radar remote sensing; step edge; synthetic aperture radar; terrain mapping; Detectors; Filters; Image edge detection; Image processing; Image segmentation; Radar detection; Reflectivity; Skeleton; Speckle; Synthetic aperture radar;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
