计算机科学 ›› 2020, Vol. 47 ›› Issue (1): 153-158.doi: 10.11896/jsjkx.181202437
李笑宇,高清维,卢一相,孙冬
LI Xiao-yu,GAO Qing-wei,LU Yi-xiang,SUN Dong
摘要: 针对传统图像融合算法无法对能量差异较大的图像取得良好融合效果的问题,文中根据图像的能量划分,利用多尺度变换和稀疏表示相结合的方式分解两幅图像的高低频信号,在低频部分自动调整不同能量图像块的稀疏融合规则,并在高频部分加入一致性检验,从而进一步约束对应局部空间能量MSD系数的复合过程,最后通过小波逆变换重构得到融合图像。使用红外图像、医学图像和多聚焦图像分别进行融合性能的验证,并分析稀疏分解层数和窗口步长等条件对融合效果的影响,最终取得该框架下的最优分解方式,获得了具备优秀的主观效果和客观指标的融合图像。实验结果表明,该算法在对任意两种类型传感器获得的图像进行融合时均能获得更加优秀的融合效果,且不仅局限于某两种图像的融合,其在SF,SSIM和EFQI等客观指标上优于传统融合算法和一般多尺度结合稀疏表示的算法。
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