影响因子：

10.6

DOI码：

10.1016/j.isprsjprs.2025.05.009

所属单位：

武汉大学测绘遥感信息工程全国重点实验室

教研室：

航空航天摄影测量研究室

发表刊物：

ISPRS Journal of Photogrammetry and Remote Sensing

项目来源：

国家自然科学金、国际重点研发计划、湖北省自然科学基金

摘要：

Real-time processing of UAV-based agricultural remote sensing images is essential for precision agriculture, especially for low-overlap, large-format image sequence. These images, characterized by large formats, repetitive textures, and low overlap, pose significant challenges for real-time UAV photogrammetry. To address these challenges, this paper proposes a novel real-time matching and pose reconstruction method tailored to low-overlap agricultural UAV imagery. Firstly, an adaptive algorithm for robust map initialization is introduced, dynamically adjusting matching windows and thresholds to ensure successful map initialization in difficult conditions. Secondly, a robust and rapid feature extraction method is developed, integrating global texture information to improve feature repeatability and matching accuracy, especially in weak-textured regions. Thirdly, a multi-model adaptive tracking method is proposed, automatically selecting between four tracking modes to enhance 2D-3D matching point numbers and uniformity, ensuring robust tracking in complex environments. Lastly, a hybrid local–global dual-threading optimization strategy is implemented, combining local graph optimization with global loop closure detection, improving both accuracy and global consistency of pose reconstruction while maintaining high real-time efficiency. Experimental results show that the proposed system is the only one capable of real-time processing of low-overlap large-format UAV images, achieving a processing speed of approximately 3.4 frames per second, this performance is four times faster than the Photoscan (Fast mode) software with a reprojection error of within 1.1 pixels, meeting the real-time UAV photogrammetry requirements for precision agriculture.

备注：

中科院一区TOP期刊

合写作者：

Gui-Song Xia,Miaozhong Xu,Zhenfeng Shao,Jianya Gong,李德仁

第一作者：

肖雄武

论文类型：

期刊论文

通讯作者：

Wenhu Qu

学科门类：

工学

文献类型：

J

卷号：

226

页面范围：

54-75

字数：

12253

ISSN号：

1872-8235

是否译文：

否

发表时间：

2025-05-15

收录刊物：

SCI

发布期刊链接：

https://doi.org/10.1016/j.isprsjprs.2025.05.009