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- W2931820549 abstract "The accuracy of remote sensing-based models of forest attributes could be improved by controlling the spatial registration of field and remote sensing data. We have demonstrated the potential of an algorithm matching plot-level field tree positions with lidar canopy height models and derived local maxima to achieve a precise registration automatically. The accuracy of remote sensing-based estimates of forest parameters depends on the quality of the spatial registration of the training data. This study introduces an algorithm called RegisTree to correct field plot positions by matching a spatialized field tree height map with lidar canopy height models (CHMs). RegisTree is based on a point (field positions) to surface (CHM) adjustment approach modified to ensure that at least one field tree position corresponds to CHM local maxima. RegisTree has been validated with respect to positioning errors and the performance of lidar-derived estimation of plot volume. Overall, RegisTree enabled to register field plots surveyed in a range of forest conditions with a precision of 1.5 m (± 1.23 m), but a higher performance for conifer plots, and a limited efficiency in homogeneous stands, having similar heights. Improved plot positions were found to have a limited impact on volume predictions under the range of tested conditions, with a gain up to 1.3%. RegisTree could be used to improve the forest plot position from field surveys collected with low-grade GPS and to contribute to the development of processing chains of 3D remote sensing-based models of forest parameters." @default.
- W2931820549 created "2019-04-11" @default.
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- W2931820549 date "2019-04-02" @default.
- W2931820549 modified "2023-10-17" @default.
- W2931820549 title "RegisTree: a registration algorithm to enhance forest inventory plot georeferencing" @default.
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- W2931820549 doi "https://doi.org/10.1007/s13595-019-0814-2" @default.
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