大旋角影像的绝对定向方法研究

基金项目: 国家自然科学基金资助项目(40671157)；国家新世纪优秀人才支持计划资助项目(NCET-07-0645)

详细信息

Absolute Orientation of Large Rotation Angle Images

¹School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan, 430079

Funds: 国家自然科学基金资助项目(40671157)；国家新世纪优秀人才支持计划资助项目(NCET-07-0645)

摘要: 针对近景摄影测量中影像与地面坐标系间存在大旋转角的问题,在分析现有绝对定向算法的基础上,提出了一种适合大旋转角影像的绝对定向方法,采用奇异矩阵分解获取较准确的角元素初值,并结合最小二乘平差进行粗差剔除和绝对定向精确参数解算。试验表明,本算法计算简单、收敛速度快,具有很好的实用价值。
- 绝对定向 /
- 大旋角 /
- 奇异值分解 /
- 数据探测法
Abstract: Absolute orientation is one of the fundamental issues in Photogrammetry and Remote Sensing. It is also an important topic in computer vision and three-dimensional reconstruction. To overcome the problem of large rotation angles between model coordinates of images and the corresponding world coordinates in close range applications, a new method of absolute orientation which is suitable for large oblique angle image is proposed. Singular value decomposition of rotation matrix is used to obtain accurate initial values of the angular elements. Least squares adjustment with gross error detection is also performed to achieve precise results of absolute orientation. Experimental results show that the proposed algorithm is effective and has well potential in various absolute orientation applications.
- absolute orientation /
- large rotation angle /
- singular value decomposition /
- data snooping