Resumo

CHEN, Yifu et al. The model of direct relative orientation with seven constraints for geological landslides measurement and 3D reconstruction. Earth Sci. Res. J. [online]. 2016, vol.20, n.4, pp.F1-F6. ISSN 1794-6190.  https://doi.org/10.15446/esrj.v20n4.60211.

With the development of computer vision and high-precision 3D model reconstruction, used for the measurement and 3D reconstruction of the geological landslides, acquiring a high-precision relative orientation basing multiple images is crucial and the key point to ensuring and improving the accuracy of 3D model and space position. Currently, the conventional relative orientation model includes five independent parameters. For the linear relative orientation model, there are nine parameters to construct the linear space geometric relationship between the imaging and space point. To eliminate the impact of more parameterization and improve the accuracy and stability of solved parameters for the conventional direct relative orientation model, a new relative orientation model with seven constraints is proposed and validated in this paper. The additional constraints are derived from the orthogonal property of the rotation matrix of a stereo imaging pair and associated with the least squares adjustment to obtain a high-precision result of the relative orientation. Through the accuracy assessment using space position, it is revealed that the new proposed model is more advantage for the conventional type of direct relative orientation, especially at 3D model reconstruction and close range photogrammetric and applications for the geological landslides measurement.

Palavras-chave : 3D; high-precision; relative orientation; space position; additional constraints; imaging pair.

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