Title :
On nonparametric edge detection in multilook SAR images
Author :
Beauchemin, Mario ; Thomson, Keith P B ; Edwards, Geoffrey
Author_Institution :
Centre de Recherche en Geomatique, Laval Univ., Que., Canada
fDate :
9/1/1998 12:00:00 AM
Abstract :
Nonparametric alternatives based on the Wilcoxon-Mann-Whitney statistics are evaluated for edge detection in synthetic aperture radar (SAR) images. First, the power of the nonparametric test is compared to that of the ratio-of-averages detector. Then, a nonparametric change-point test is evaluated to identify the true edge position inside a fixed window
Keywords :
edge detection; geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; SAR; SAR image; Wilcoxon-Mann-Whitney statistics; change-point test; geophysical measurement technique; image processing; image sequence; land surface; multilook image; nonparametric edge detection; nonparametric test; radar imaging; radar remote sensing; ratio-of-averages; synthetic aperture radar; terrain mapping; true edge position; Councils; Detectors; Image edge detection; Probability distribution; Radar detection; Signal to noise ratio; Statistical distributions; Statistics; Synthetic aperture radar; Testing;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
