光学学报, 2017, 37 (7): 0710003, 网络出版: 2017-07-10   

基于NSSCT的红外与可见光图像融合 下载: 516次

A Fusion Algorithm of Infrared and Visible Image Based on NSSCT
作者单位
空军工程大学航空航天工程学院, 陕西 西安 710038
摘要
为了克服传统图像融合结果存在对比度不足和细节缺失的缺点,提出基于非下采样剪切波-对比度变换(NSSCT)的图像融合算法。分析了图像经非下采样剪切波变换(NSST)后高频系数间的关联性与差异性,构造了高频系数方向性基本一致的NSSCT变换,保留了融合图像的高频系数细节,并提升了对比度。基于图像的低频特点,采用显著性增强方法对低频系数进行融合,通过NSSCT逆变换得到对比度提升和细节增强的融合图像。实验结果表明,在图像对比度提升与细节保留方面,本文算法比基于小波、NSST和显著性等算法具有明显优势。
Abstract
To overcome the weakness that traditional fused image cannot express the image contrast and details well, an image fusion algorithm is proposed based on non-subsampled shearlet-contrast transform (NSSCT). The correlation and diversity between different high coefficients are analyzed by non-subsampled shearlet transform (NSST), and the NSSCT is built with same orientation high coefficients, which reserves contrast and details image information. Based on image characters of lower frequency, low coefficients are fused by enhancing the salient targets of image. Fused image with higher contract and enhanced details is obtained by inverse NSSCT. Compared with several popular algorithms, such as wavelet transform, NSST and saliency map, the experimental results show that the proposed algorithm is obviously of superiority in reserving image contrast and details.

吴冬鹏, 毕笃彦, 何林远, 马时平, 凡遵林. 基于NSSCT的红外与可见光图像融合[J]. 光学学报, 2017, 37(7): 0710003. Wu Dongpeng, Bi Duyan, He Linyuan, Ma Shiping, Fan Zunlin. A Fusion Algorithm of Infrared and Visible Image Based on NSSCT[J]. Acta Optica Sinica, 2017, 37(7): 0710003.

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