Title :
A filter for homogeneous areas in very high resolution SAR images based on hysteresis smoothing
Author :
Anahara, Takuma ; Schmitt, Michael ; Tamura, Masayuki
Author_Institution :
Dept. of Civil & Earth Resources Eng., Kyoto Univ., Kyoto, Japan
Abstract :
Hysteresis smoothing is a filtering method for one-dimensional data, which removes waveform noise with a simple but powerful process. Although it may be applied in two-dimensional data, an inherent problem of severe artifacts makes it difficult to use this method on SAR imagery. In this paper, we take notice of a property appeared when hysteresis smoothing works well on homogeneous areas. We propose a simple rule to exploit this advantage without losing the merits of the original approach. The effectiveness of our approach is demonstrated quantitatively and qualitatively with simulated and real Ku-band SAR data.
Keywords :
filtering theory; radar imaging; synthetic aperture radar; filtering method; homogeneous areas; hysteresis smoothing; one-dimensional data; two-dimensional data; very high resolution SAR images; waveform noise; Digital filters; Hysteresis; Image edge detection; Noise; Smoothing methods; Synthetic aperture radar; Ku-band; filters; floods; hysteresis smoothing; very high resolution SAR;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350641