测绘学报 ›› 2016, Vol. 45 ›› Issue (2): 170-177.doi: 10.11947/j.AGCS.2016.20150282

• 摄影测量学与遥感 • 上一篇    下一篇

旋转多基线摄影光束法平差法方程矩阵带宽优化

王祥, 张永军, 黄山, 谢勋伟   

  1. 武汉大学遥感信息工程学院, 湖北 武汉 430079
  • 收稿日期:2015-06-05 修回日期:2015-11-03 出版日期:2016-02-20 发布日期:2016-02-29
  • 通讯作者: 张永军,E-mail: zhangyj@whu.edu.cn E-mail:zhangyj@whu.edu.cn
  • 作者简介:王祥(1990-),男,博士生,研究方向为数字摄影测量及遥感应用。
  • 基金资助:
    国家自然科学基金(41322010;41571434)

Bandwidth Optimization of Normal Equation Matrix in Bundle Block Adjustment in Multi-baseline Rotational Photography

WANG Xiang, ZHANG Yongjun, HUANG Shan, XIE Xunwei   

  1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
  • Received:2015-06-05 Revised:2015-11-03 Online:2016-02-20 Published:2016-02-29
  • Supported by:
    The National Natural Science Foundation of China (Nos. 41322010;41571434)

摘要: 提出了一种对近景旋转多基线摄影影像进行重新排序编号从而优化光束法区域网平差法方程系数矩阵带宽的方法。首先,根据影像间的相互联系及其地面覆盖范围,计算每张影像的等效摄站位置;然后根据等效摄站间的坐标关系对其进行重新排序编号,得到各影像的逻辑顺序;最后借助影像的逻辑顺序求解平差法方程系数矩阵实际带宽值。试验结果表明,通过上述方法求出的带宽相对于按照影像原始摄影编号计算出的带宽值有很大改进,一定程度上提升了近景旋转多基线摄影实际应用中计算机的运算效率,减少了平差运算对计算机内存的消耗。

关键词: 近景旋转多基线摄影, 光束法区域网平差, 等效摄站, 影像排序, 带宽

Abstract: A new bandwidth optimization method of normal equation matrix in bundle block adjustment in multi-baseline rotational close range photography by image index re-sorting is proposed. The equivalent exposure station of each image is calculated by its object space coverage and the relationship with other adjacent images. Then, according to the coordinate relations between equivalent exposure stations, new logical indices of all images are computed, based on which, the optimized bandwidth value can be obtained. Experimental results show that the bandwidth determined by our proposed method is significantly better than its original value, thus the operational efficiency, as well as the memory consumption of multi-baseline rotational close range photography in real-data applications, is optimized to a certain extent.

Key words: multi-baseline rotational close range photography, bundle block adjustment, equivalent exposure station, image sorting, bandwidth

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