Acta Optica Sinica, Volume. 34, Issue 12, 1215004(2014)
Study on Close-Range Photogrammetry Based on Nonparameteric Measurement Model
Because of the advantage of wide measurement range, high measurement accuracy and high efficiency, the close-range photogrammetry plays more and more important role in large-size accurate measurement tasks. The self-calibration measurement model optimized via bundle adjustment is considered to be the most reliable technique to high-accuracy close-range photogrammetry. As more and more off-the-shelf single lens reflex (SLR) cameras are adopted to three-dimensional measurement applications, the measurement results are not ideal compared with that of professional cameras. After being analyzed carefully, the self-calibration parameterized model has some limitations to the improvement of measurement accuracy in addition to the issues inherent in the qualities of cameras. In order to solve the problem, the close-range photogrammetry without relying on camera internal parameters is studied. The nonparameteric calibration method is proposed, which is suitable to the calibration of large-field cameras. The nonparameteric measurement model based on orientation information is established after the image points is matched and the initial value are determined. The three-dimensional coordinates of target points can be solved accurately via the optimization of bundle adjustment. Compared with measurement results of traditional photogrammetry, it is proved that our method is effective to improve the three-dimensional measurement accuracy with large-field SLR cameras.
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Long Changyu, Zhu Jigui, Guo Yin, Lin Jiarui, Ye Shenghua. Study on Close-Range Photogrammetry Based on Nonparameteric Measurement Model[J]. Acta Optica Sinica, 2014, 34(12): 1215004
Category: Machine Vision
Received: May. 29, 2014
Accepted: --
Published Online: Oct. 8, 2014
The Author Email: Changyu Long (cylong@tju.edu.cn)