基于摄影经纬仪的全景图像拼接方法  

Method of Panoramic Image Stitchingfor Theodolite-Camera System

作　　者：陈继华[1] 郭文松[1] 

机构地区：[1]郑州大学物理工程学院,河南郑州450001

出　　处：《激光与光电子学进展》2016年第5期126-133,共8页Laser & Optoelectronics Progress

摘　　要：提出了一种基于摄影经纬仪的全景图像拼接方法。在电子经纬仪的望远镜上固定安装一台摄像机,由经纬仪的测角功能,可直接获取图像序列采集时的水平角和天顶距,通过校准固连部分的位姿偏移参数,即可解算每幅图像的外方位元素,使得图像拼接不受序列间有无重叠区域的影响。经过视点校正及球面投影融合,实现图像拼接生成球面全景图。对全景图中感兴趣区域(ROI)的图像表示方法进行了研究,便于后续三维浏览及辅助测量。理论推导及实验证明了该方法能够准确有效地实现图像拼接及ROI显示,具有通用性。A novel mosaic method based on the theodolite-camera system for such sort of imagery is proposed. The camera is fixed and installed on the telescope of the electronic theodolite. Because of the angle-measuring function of the theodolite, the data of horizontal and zenith angle in the acquisition of image sequences can be directly obtained. When the offset parameters of position and attitude are calibrated, the exterior orientation elements of each image can be calculated. Thus, the image mosaic is not affected by the overlapping regions of sequences. A panoramic image can be generated based on spherical model after viewpoints correction. The image representation method of region-of-interest （ROI） is studied, which is convenient for the following aD browsing and assistant measurement. Theoretical derivation and experimental results show that this universal method can realize image mosaic and display ROI accurately and effectively.

关 键 词：图像处理 图像拼接 摄影经纬仪 球面投影 感兴趣区域 

分 类 号：P231.5[天文地球—摄影测量与遥感]