采用梅花采样方向滤波器组的多光谱图像融合  

Multi-spectral image fusion using quincunx-sampled directional filter bank

作　　者：李燕[1] 刘斌[1] 

机构地区：[1]湖北大学数学与计算机科学学院,武汉430062

出　　处：《计算机工程与应用》2012年第5期183-185,227,共4页Computer Engineering and Applications

基　　金：国家自然科学基金(No.61072126);湖北省自然基金重点项目(No.2009CDA133)

摘　　要：利用梅花采样方向滤波器能够提供丰富的方向信息的特点,提出了一种基于此方向滤波器组的多光谱图像融合方法。该方法通过IHS变换,将多波段影像从RGB空间转换到IHS空间,对I分量及全色影像进行梅花采样方向滤波器变换,得到相应的低频子图像和高频不同方向的子图像,将它们按一定的融合规则得到新的I分量,通过IHS逆变换得到RGB融合图像。实验结果表明,该方法在图像边缘等细节上有较好的视觉效果,取得了优于IHS方法和基于梅花形采样离散小波变换方法的融合效果。Using a characteristic that quincunx-sampled directional filter can provide rich direction information,a multi-spectral image fusion method is proposed based on the directional filter bank.An original multi-band image is converted from RGB mode to IHS mode through IHS transform.Quincunx-sampled directional filter transform is performed on the component I and the panchromatic image,corresponding low frequency sub-image and high frequency different directional sub-image are gained,and they are fused according to some fusion rules.The new I component can be obtained.A new RGB image is gotten through an inverse IHS transform.The experimental results show that the method has a better visual effect in image edge details,and has better fusion effect than IHS fusion method and the fusion method based on quincunx-sampled discrete wavelet transform.

关 键 词：梅花采样方向滤波器组 多光谱图像融合 梅花形采样离散小波变换 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]