测绘通报 ›› 2019, Vol. 0 ›› Issue (2): 39-44.doi: 10.13474/j.cnki.11-2246.2019.0040

• 学术研究 • 上一篇    下一篇

近景摄影测量下的视场关系定量表达

肖怡, 刘鹏, 王瑜, 张文靖, 张思佳   

  1. 昆明理工大学国土资源工程学院, 云南 昆明 650093
  • 收稿日期:2018-05-05 修回日期:2018-06-19 出版日期:2019-02-25 发布日期:2019-03-05
  • 通讯作者: 刘鹏。E-mail:497506564@qq.com E-mail:497506564@qq.com
  • 作者简介:肖怡(1994-),男,硕士生,主要研究方向为摄影测量与遥感。E-mail:460660152@qq.com

Quantitative expression of fields of view under close range photogrammetry

XIAO Yi, LIU Peng, WANG Yu, ZHANG Wenjing, ZHANG Sijia   

  1. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
  • Received:2018-05-05 Revised:2018-06-19 Online:2019-02-25 Published:2019-03-05

摘要:

近景摄影测量下的视场关系指较小空间范围中不同视场之间存在的位姿关系,它用来确定不同摄像机所代表的参考坐标系之间的旋转量与平移量。它在交通监控、目标识别与定位、居家安全保障等方面有着广泛的应用。本文在近景摄影测量的框架下,提出了一种确定两种不同视场之间位姿的方法,具体步骤为:①在大视场下进行变化检测,当有变化区域被检测到时,获得原始图像,同时在小视场下获得样本图像集合;②对原始图像和样本图像集合进行相对定向,得到样本图像相对于原始图像的空间姿态参数;③将原始图像和样本图像进行图像匹配,获取匹配度最高的样本图像,该样本图像存储的姿态参数即是拍摄瞬间小视场相对于大视场的位姿;④按照步骤③中获取的姿态参数调整小视场下的摄像机空间位姿,使其对准变化区域。试验表明该方法能够有效支持空间范围较小区域内视场关系的定量描述。

关键词: 近景摄影测量, 视场, 变化检测, 相对定向, 图像匹配

Abstract:

The relationship at the field of view under close range photogrammetry refers to position and pose relationship at different fields of view in a small space range, which is used to determine the rotation and translation of the reference coordinates, represented by different cameras.Under the framework of close range photogrammetry, a method for determining the position and pose between two different fields of view is proposed in this paper, of which the concrete steps are:①Change detection from the large field of view,when the change area is detected, the original image is obtained at the same time,and the sample images set were obtained under the small field of view. ②The original photo and the sample photos are relatively orientated, and the spatial attitude parameters of the sample photos relative to the original photo are obtained. ③The original image is matched with the sample images to obtain the sample image with the highest matching degree,the attitude parameters of the sample image are the spatial position and pose of the samll field of view relative to the large field of view. ④According to the attitude parameters obtained in step 3, the camera position and pose is adjusted under the small field of view so that it can be aligned to the changing area. Experiments show that this method can effectively support the quantitative description of the field of view in a small range.

Key words: close range photogrammetry, fields of view, change detection, relative orientation, image matching

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