地理空间信息2024，Vol.22Issue(3)：7-10,15,5.
可见光相机辅助的热红外相机几何定标
Geometric Calibration of Thermal Cameras Assisted by RGB Cameras
摘要
Abstract
Due to the fact that thermal cameras suffer from the problems of low spatial resolution,bad image contrast and blurred image edge,we proposed a novel geometric calibration method of thermal cameras assisted by RGB cameras to improve the geometric positioning accuracy.In the close-range photogrammetry environment,we designed a new 3D geometric calibration field,which took RGB camera and thermal camera into consideration,and adopted interior orientation followed by exterior orientation to sequentially conduct geometric calibration and application measurement.In the oblique airborne photogrammetry environment,we integrated geometric calibration with application measurement,and considered the influence of camera distortion on image positioning accuracy during 3D reconstruction,which could achieve high-precision geometric calibration and 3D reconstruction at the same time.Experimental results show that the proposed method significantly improves the accuracy and robustness of thermal cameras,and provides supports for applications such as high-precision 3D reconstruction.关键词
热红外相机/可见光相机/几何定标/近景摄影测量/倾斜航空摄影测量Key words
thermal camera/RGB camera/geometric calibration/close-range photogrammetry/oblique airborne photogrammetry分类
天文与地球科学引用本文复制引用
林栋,杨保平,田鹏义,崔晓杰,祝若鑫..可见光相机辅助的热红外相机几何定标[J].地理空间信息,2024,22(3):7-10,15,5.基金项目
国家自然科学基金资助项目(62301606) （62301606）
地理信息工程国家重点实验室基金资助项目(SKLGIE2019-Z-3-3). （SKLGIE2019-Z-3-3）
