Browsing by Author "Besomi, Manuela"

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    Assessing the impact of Digital Elevation Model resolution on Elevation Gain Estimations in Trail Running
    (IEEE, 2024) Sánchez, Raimundo; Egli, Pascal; Besomi, Manuela; Truffello Robledo, Ricardo
    This study addresses the challenge of accurately estimating Elevation Gain (EG) in trail running using GPS devices, where resolution of Digital Elevation Models (DEMs) plays a critical role. We propose an algorithmic enhancement to increase the resolution of a 4m DEM to 20cm, aligning it closely with high-resolution LiDAR models. Quantitative analyses reveal that this method significantly improves EG estimations, demonstrating a considerable reduction in error margins compared to conventional EG estimation using raw GPS. Specifically, our findings indicate that the bilinearly interpolated DEM achieves near-LiDAR accuracy at 20cm resolution, with error rates markedly decreasing at this scale. This study underscores the potential of using enhanced-resolution DEMs as a cost-effective alternative to LiDAR, particularly in applications like trail running where precise elevation data is crucial. Our approach not only offers a substantial improvement in the accuracy of physical workload assessments but also enhances the accessibility of high-quality elevation data for broader geographical and environmental applications.