航空滤光片阵列多光谱图像拼接算法  

Multispectral image stitching algorithm for aeronautical filter array

作　　者：李铜哨 孙文邦[1] 白新伟[1] 岳广 王志磊 LI Tongshao;SUN Wenbang;BAI Xinwei;YUE Guang;WANG Zhilei(Air Force Aviation University,Changchun 130022,China;N0.78102 Troops of PLA,Chengdu 610032,China;N0.93525 Troops of PLA,Rikaze 857000,China)

机构地区：[1]空军航空大学,长春130022 [2]78102部队,成都610032 [3]93525部队,日喀则857000

出　　处：《激光杂志》2023年第1期130-135,共6页Laser Journal

基　　金：全军军事类研究生课题(No.DSSQ910252018010)。

摘　　要：针对航空滤光片阵列多光谱图像拼接效率较低的问题,提出了航空滤光片阵列多光谱图像拼接算法。首先,对多光谱图像构建条带图像模板,利用平台姿态信息对序列图像及图像模板进行投影变换;其次,利用尺度不变特征变换算法对尺度缩放后的图像提取匹配点并计算图像单应矩阵,通过矩阵补偿得到投影变换后图像的坐标转换矩阵,选择中间序列图像为基准图像,对投影变换后的图像及其模板进行坐标变换;最后,依次提取单波段图像模板得到单波段序列条带图像,通过图像融合得到大区域单波段图像。理论分析与实验结果表明:表明该方法可以有效提高滤光片阵列多光谱图像拼接效率,且具有较高的图像拼接精度。Aiming at the problem of low efficiency of multispectral image stitching of aerial filter array,a new method of multispectral image stitching algorithm of filter array is proposed in this paper.Firstly,the strip image template is constructed for the multispectral image,the platform pose information is used to transform the image sequence and image templates.Secondly,the scale-invariant feature transform algorithm is used to extract the matching points from the scaled images and calculate the image coordinate matrix,and the coordinate transformation matrix of projection transformed image is obtained by matrix compensation.Finally,the single-band sequence strip images are obtained by extracting the single-band image template in turn,and the large area single-band image is obtained by using image fusion.The theoretical analysis and experimental results show that this method can effectively improve the stitching efficiency of the multispectral image of filter array and has a high image stitching accuracy.

关 键 词：滤光片阵列 多光谱 图像拼接 矩阵补偿 单波段 

分 类 号：TN249[电子电信—物理电子学]