DocumentCode :
641755
Title :
Optical/SAR image registration based on cross-correlation with multi-scale and multi-direction Gabor characteristic matrixes
Author :
Jiang Yun-hui
Author_Institution :
Southwest Inst. of Electron. Technol. of China, Chengdu, China
fYear :
2013
fDate :
14-16 April 2013
Firstpage :
1
Lastpage :
4
Abstract :
Optical/SAR (Synthetic Aperture Radar) image registration is one of the key technologies in image fusion or image guidance with SAR imaging. Generally we implement characteristic extraction and scene matching on image registration with optical and SAR images. This paper presents a new heterogeneous optical/SAR image registration method. Firstly we implement directional Frost filtering on SAR image so that we can reduce coherent speckle and keep the details of the edges and textures. Secondly we carry out the Gaussian gradient image of the optical and SAR image respectively. Then we extract characteristics from the two Gaussian gradient images using two-dimensional multi-scale and multi-direction Gabor filters respectively and then form two Gabor characteristic matrixes. Finally we implement NCC (normalized cross-correlation) matching on the two characteristic matrixes. The experiment result shows that the heterogeneous image registration method mentioned in this paper has preferable robustness and accuracy.
Keywords :
Gabor filters; Gaussian processes; correlation methods; edge detection; feature extraction; gradient methods; image fusion; image matching; image registration; image texture; natural scenes; optical images; radar imaging; synthetic aperture radar; Gaussian gradient images; NCC matching; characteristic extraction; coherent speckle reduction; directional Frost filtering; edge detail preservation; heterogeneous optical-SAR image registration method; image fusion; image guidance; multidirection Gabor characteristic matrices; multiscale Gabor characteristic matrices; normalized cross-correlation matching; scene matching; synthetic aperture radar; texture detail preservation; two-dimensional multidirection Gabor filters; two-dimensional multiscale Gabor filters; Gabor characteristic matrix; SAR image; image registration; normalized cross-correlation; optical image;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Radar Conference 2013, IET International
Conference_Location :
Xi´an
Electronic_ISBN :
978-1-84919-603-1
Type :
conf
DOI :
10.1049/cp.2013.0343
Filename :
6624507
Link To Document :
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