基于非下采样剪切波变换域方向信息测度的多聚焦图像融合方法  

Fusion technique for multi-focus images based on orientation information measurement in non-subsample shearlet transform domain

作　　者：邢雅琼[1] 王晓丹[1] 梁兵杰 秦卓 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051 [2]大唐移动通信设备有限公司西安分公司,陕西西安710061

出　　处：《系统工程与电子技术》2015年第1期191-198,共8页Systems Engineering and Electronics

基　　金：国家自然科学基金(60975026;61273275)资助课题

摘　　要：根据非下采样剪切波变换(non-subsample shearlet transform,NSST)在图像融合领域的优势和多聚焦图像的成像特点,将NSST运用于多聚焦图像融合。在NSST变换域中,利用方向信息测度能够突出图像边缘纹理特征以及降低图像噪声,将其运用在高频子带系数的融合规则中,并对传统的低频融合策略进行改进,将低频系数和高频系数的融合图像进行NSST的逆变换,得到融合图像。计算机仿真实验表明,相比于传统的剪切波变换的融合策略,本文提出的图像融合方法提高了图像的融合质量,增加了图像的信息量,并能降低图像噪声,具有一定的有效性和实用性。Non-subsample shearlet transform （NSST）is suggested into the multi-focus image fusion,for its advantage in image fusion and the feature of multi-focus imaging.Orientation information measurement can highlight the edge texture characteristic and reduce the noise,so it is used in the fusion of high-frequency coeffi-cients.Therefore,the fusion image is brought out after the NSST inverse transformation is taken on the fusion of low-frequency and high-frequency coefficients.Simulation is carried out to prove the effectiveness and practi-cability the proposed technique,which illustrates that the proposed method can improve the quality of fusion im-ages and increase the information of fusion images,meanwhile,the noise of images is also decreased.

关 键 词：图像融合 非下采样剪切波变换 方向信息测度 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]