J4 ›› 2009, Vol. 26 ›› Issue (5): 525-530.

• Image and Information Proc. • Previous Articles     Next Articles

Fusion of polarimetric image based on Contourlet transform

ZHANG Jing-Jing1,2, FANG Yong-Hua1, YI Wei-Ning1   

  1. 1 Remote Sensing Lab,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Science,HeFei 230031; 
    2 School of Electronic Science and Technology of Anhui University, Hefei 230039
  • Published:2009-09-28 Online:2009-08-27
  • Contact: 方勇华,男,1966年生,安徽太平人,博士,研究员。从事卫星遥感和环境监测方面的合作研究,目前担任安徽光机所红外高光谱信息处理及应用技术学科带头人。

Abstract:

A fusion method for polarimetric image based on contourlet transform is proposed. Owing to the geometric information, contourlet transform is a flexible multi-scale, multi-direction and shift-invariant image decomposition, it is easily adjustable for detecting fine details in any orientation along curvatures, which results in more potential for effective analysis of images compare with wavelet transform.This three polarimtric images in 555 band are decomposed using contourlet transform. For low-pass coefficients and the directional high-frequency coefficients, which have been calculated with the energy of the correspomding neighbor region , are used to select the better coefficients byl weighted sum of algorithm for fusion. Experimental results show that compared with the wavelet transform algorithm, the algorithm can get better visual effect and achieve the virtue of polarimetric image effectively and preserves image details, and the significant information of original image like textures and contour details is well maintained.

Key words: image fusion, contourlet transform, fusion rule, polarimetric image, regional energy