CAJ | 학술논문

针对灰色系统理论在空间域对红外与可见光图像融合的不足，以及非下采样Contourlet变换（ NSCT）在图像融合领域的优势，提出了一种基于目标提取的红外与可见光图像融合新算法。首先，对红外和可见光图像分别进行NSCT变换；其次，对红外低频分量应用灰色系统理论进行目标提取，并利用所提融合规则对低频分量进行融合，同时对高频分量采用常用融合规则进行融合；最后，对融合后高、低频分量进行NSCT逆变换，得到融合图像。通过与4种常用方法进行实验对比，结果表明，文中算法得到的融合图像视觉效果较好，某些客观评价指标提升明显。
침대회색계통이론재공간역대홍외여가견광도상융합적불족，이급비하채양Contourlet변환（ NSCT）재도상융합영역적우세，제출료일충기우목표제취적홍외여가견광도상융합신산법。수선，대홍외화가견광도상분별진행NSCT변환；기차，대홍외저빈분량응용회색계통이론진행목표제취，병이용소제융합규칙대저빈분량진행융합，동시대고빈분량채용상용융합규칙진행융합；최후，대융합후고、저빈분량진행NSCT역변환，득도융합도상。통과여4충상용방법진행실험대비，결과표명，문중산법득도적융합도상시각효과교호，모사객관평개지표제승명현。
Considering the shortcomings of the infrared and visible light image fusion based on grey system theory in the spatial domain, and utilizing the advantages of nonsubsampled Contourlet transform ( NSCT) in image fusion, a fusion algorithm of the infrared and visible light image based on target extraction is proposed.Firstly, the nonsub-sampled Contourlet transform is performed respectively on infrared image and visible light image.Secondly, the grey system theory is applied to the low frequency component of the infrared image for target extraction, and then the low frequency components are fused by making use of the proposed fusion rule.At the same time the common fusion rule is applied to the high frequency components.Finally, the reverse nonsubsampled Contourlet transform is performed on the fused low frequency part and high frequency part in order to obtain the fusion image.Compared with four commonly used methods, the results show that the fusion image has a good visual effect, and some objective evalua-tion indexes are improved obviously.