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中国科学院大学学报 ›› 2022, Vol. 39 ›› Issue (3): 377-385.DOI: 10.7523/j.ucas.2020.0021

• 电子信息与计算机科学 • 上一篇    下一篇

镀膜双镜头多光谱相机的波段配准方法

郑佳怡1,2, 方俊永1, 王潇1, 张晓红1, 刘学1   

  1. 1 中国科学院空天信息创新研究院, 北京 100094;
    2 中国科学院大学, 北京 100049
  • 收稿日期:2020-02-24 修回日期:2020-05-22 发布日期:2021-06-01
  • 通讯作者: 方俊永
  • 基金资助:
    国家重点研发计划项目(2016YFC0803000)和中国科学院重点部署项目(KFZD-SW-319-08)资助

A new band registration method for coated dual-lens multispectral camera

ZHENG Jiayi1,2, FANG Junyong1, WANG Xiao1, ZHANG Xiaohong1, LIU Xue1   

  1. 1 Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2020-02-24 Revised:2020-05-22 Published:2021-06-01

摘要: 针对镀膜双镜头多光谱相机波段多、数据量大、配准流程复杂的问题,提出一种基于改进SURF算法的快速配准方法。该方法首先完成对各波段图像的预处理,采用数字畸变模型采样法对各波段影像畸变进行校正;然后对畸变改正后的各波段图像利用快速版的SURF算法(F-SURF)进行配准。F-SURF算法从3个方面对原SURF算法进行改进,包括:依照匹配贡献度优化算法组数设置、舍弃算法旋转不变性以及引入渐进采样一致法进行特征点匹配等。通过地面及飞行实验数据进行算法验证,结果表明改进算法的配准精度优于经典SURF算法,且时间效率显著提升。

关键词: 镀膜多光谱相机, 波段配准, SURF算法, F-SURF算法

Abstract: In order to solve the problem of band registration of coated dual lens multispectral camera, a fast registration method based on improved SURF (speeded up robust features) algorithm is proposed. Firstly, the distortion of each band image is corrected. Then, the fast version of SURF algorithm (F-SURF) is used to register the undistorted band images. Compared with the original SURF algorithm, the F-SURF algorithm optimizes the number of octave, discards the rotation invariance and introduces the PROSAC algorithm. The experimental results indicate that the registration accuracy of the F-SURF algorithm is better than that of the classic SURF algorithm, and the time efficiency is significantly improved.

Key words: coated multispectral camera, registration, SURF, F-SURF

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