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Precision mapping through the stereo vision and geometric transformations in unknown environments

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Abstract

Geodetic techniques for surveying and rapid mapping need to be revisited due to the present progress on satellite, sensor, and geospatial technologies. Conventional surveying methods provide high level of accuracy but require significant human involvement in the field while GNSS (Global Navigation Satellite System) positioning method, provides unsatisfactory accuracy in urban or high vegetated areas due to the degraded GNSS signal coverage. In this study, an alternative surveying method is proposed which facilitates the process of characteristic point localization, using stereoscopic vision and at least one visual marker. At first, the camera system localizes itself and maps the study area using stereo SLAM (Simultaneous Localization and Mapping) algorithm while subsequently detects the visual markers (origin and targets), placed in the area. Afterwards, using a multi-view geometry method for the marker localization and an optimization algorithm for origin marker’s plane alignment, the system is able to export the coordinates of the markers and a point cloud (provided by SLAM) in a local coordinate system based on the origin marker’s pose and location. The study involves both terrestrial and unmanned aerial vehicle platforms that may carry the proposed equipment. An extensive set of indoor and outdoor, terrestrial and UAV experiments validates the methodology which succeeds a horizontal and vertical error in a level of 10 cm or better. To the best of our knowledge this study proposes the first surveying alternative which requires only a stereo camera and at least one visual marker in order to localize specific and arbitrary points in a centimeter level of accuracy. The proposed methodology, demonstrates that the use of low-cost equipment instead of the costly and complicated surveying equipment, may prove sufficient to produce an accurate 3D map of the scene in an unknown environment.

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Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Funding

This research and the APC have been co-financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH–CREATE–INNOVATE (project code: T1EDK-03209).

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Contributions

Conceptualization: Panagiotis Partsinevelos, Achilles Tripolitsiotis, Dimitris Trigkakis; Methodology: Georgios Petrakis, Dimitris Trigkakis; Software: Dimitris Trigkakis, Georgios Petrakis, Angelos Antonopoulos; Validation: Georgios Petrakis, Dimitris Trigkakis, Panagiotis Partsinevelos; Original draft preparation: Georgios Petrakis, Panagiotis Partsinevelos; Writing-Review & Editing: Georgios Petrakis, Panagiotis Partsinevelos, Achilles Tripolitsiotis; Resources: Angelos Antonopoulos; Project administration Funding acquisition: Achilles Tripolitsiotis, Panagiotis Partsinevelos; Supervision: Panagiotis Partsinevelos.

Corresponding author

Correspondence to Georgios Petrakis.

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The authors declare no competing interests.

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Communicated by: H. Babaie

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Petrakis, G., Antonopoulos, A., Tripolitsiotis, A. et al. Precision mapping through the stereo vision and geometric transformations in unknown environments. Earth Sci Inform 16, 1849–1865 (2023). https://doi.org/10.1007/s12145-023-00972-2

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  • DOI: https://doi.org/10.1007/s12145-023-00972-2

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