Title :
Fusion of Multi-band SAR Images Based on Contourlet Transform
Author :
Zheng, Yong-An ; Zhu, Changsheng ; Song, Jianshe ; Zhao, Xunhui
Author_Institution :
Inst. of High-tech Hong Qing Town, Inst. of Inf. Eng. Xi ´´an Res., Xi´´an
Abstract :
Aim at the fusion of multi-band synthetic aperture radar (SAR) images, a new fused method using the contourlet transform is presented. Contourlet transform provides a flexible multiresolution, anisotropy and directional expansion for images. Compared with wavelets, it can afford more efficient presentation of image edges. This is employed for fusing the directional high- frequency coefficients. For the lowpass coefficients, an averaging fusion rule is used. For the directional high-frequency coefficients, the higher value of edge information measurement is used to select the better coefficients for fusion. The proposed method solves the problem of losing edge information for wavelet based fusion method. Finally, the example result of two bands SAR image fusion compared with wavelet fused method shows the vision effect and the statistical evaluation factors for fusion are both improved.
Keywords :
image fusion; radar imaging; radar resolution; synthetic aperture radar; transforms; contourlet transform; directional high-frequency coefficients; edge information measurement; flexible multiresolution; lowpass coefficients; multiband SAR image fusion; statistical evaluation; synthetic aperture radar; vision effect; Anisotropic magnetoresistance; Discrete wavelet transforms; Image fusion; Image resolution; Layout; Remote sensing; Signal resolution; Synthetic aperture radar; Wavelet domain; Wavelet transforms; Contourlet Transform; Image Fusion; Multi-band; SAR image;
Conference_Titel :
Information Acquisition, 2006 IEEE International Conference on
Conference_Location :
Shandong
Print_ISBN :
1-4244-0528-9
Electronic_ISBN :
1-4244-0529-7
DOI :
10.1109/ICIA.2006.305749