Li Anhu, Liu Xingsheng, Gong Wei, Sun Wansong, Sun Jianfeng
J Opt Soc Am A Opt Image Sci Vis. 2019 Feb 1;36(2):305-311. doi: 10.1364/JOSAA.36.000305.
A prelocation image stitching method is proposed for the scan imaging system using Risley prisms. By confining the feature-based stitching procedure to several prelocated overlap areas in multiple subregion images, the proposed method reduces the computational complexity of feature extraction and image registration. Experiment results and analysis have validated the feasibility and robustness of the overlap prelocation algorithm, which can enhance the image stitching efficiency by 21.89% at least and by 39.38% at most. In addition, the composite image obtained from the prelocation stitching procedure can achieve a large field of view while maintaining high resolution.
针对使用里斯利棱镜的扫描成像系统，提出了一种预定位图像拼接方法。通过将基于特征的拼接过程限制在多个子区域图像中的几个预定位重叠区域，该方法降低了特征提取和图像配准的计算复杂度。实验结果与分析验证了重叠预定位算法的可行性和鲁棒性，该算法可将图像拼接效率至少提高21.89%，最多提高39.38%。此外，通过预定位拼接过程获得的合成图像在保持高分辨率的同时可以实现大视场。
