Acta Geodaetica et Cartographica Sinica ›› 2015, Vol. 44 ›› Issue (9): 988-994.doi: 10.11947/j.AGCS.2015.20140473

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A Non-iterative Space Resection Method Based on Barycentric Coordinates

LI Jiayuan, HU Qingwu, AI Mingyao   

  1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
  • Received:2014-09-09 Revised:2015-01-06 Online:2015-09-24 Published:2015-09-24
  • Contact: 胡庆武,huqw@whu.Edu.cn E-mail:huqw@whu.Edu.cn
  • Supported by:
    The National Natural Science Foundation of China (No.41271452)

Abstract: To resolve the problem that iterative space resection algorithms may have no convergence in oblique photogrammetry,a novel non-iterative method based on barycentric coordinates is proposed. This algorithm firstly describes the object space coordinates of control points as barycentric coordinates,based on its coordinate reference independence,the corresponding image space coordinates can be obtained by using total least square method,then absolute orientation using orthonormal matrices is applied and the result is optimized finally. Experimental results show that this algorithm can be suitable for any image attitude angle,and the accuracy is even better than iterative space resection methods.

Key words: space resection, barycentric coordinates, total least square, absolute orientation, oblique photogrammetry

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