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Did you know that @movingpandas also supports local image coordinates?

Currently working on a demo using #bicycle tracks extracted from #video footage 🚴🎥 published by @mszll

https://arxiv.org/abs/2211.01301

#openscience #MobilityAnalytics #MobilityDataScience #mobility #MovingPandas #TrafficFlow #planning #cycling #TrafficBehavior

Computational Desire Line Analysis of Cyclists on the Dybbølsbro Intersection in Copenhagen

Contemporary street design prioritizes vehicular traffic flow and assumes compliant road users. However, actual human behavior is typically neglected, especially of cyclists, leading to streets with inadequate wayfinding and protection from vehicular…
arXiv.org
#video #cycling #Bicycle #OpenScience #planning #mobility #mobilitydatascience #mobilityanalytics #movingpandas #trafficflow #trafficbehavior @Michael Szell @movingpandas
This entry was edited (1 year ago)
in reply to Anita Graser 🇪🇺🇺🇦🇬🇪

Michael Szell
Michael Szell
• •
Very cool! Are you interested in the homography matrix, to be able to make the projection / correct speed calcs? I could be able to get it, potentially. (or at least the code to calculate it, from an older student project)
in reply to Anita Graser 🇪🇺🇺🇦🇬🇪

Michael Szell
Michael Szell
• •
ah sorry, just realized, without the camera available anymore, we wont be able to calibrate and correct for the significant radial distortion, so I believe this wont be possible retrospectively 🙁
in reply to Anita Graser 🇪🇺🇺🇦🇬🇪

Michael Szell
Michael Szell
• •
I'm no expert on this, but I think the cam distortions would need to be fixed beforehand (can be a mix of radial+tangential), which seems practically impossible without cam calibration
in reply to Michael Szell

Anita Graser 🇪🇺🇺🇦🇬🇪
Anita Graser 🇪🇺🇺🇦🇬🇪
• •
did some vector georeferencing with the #QGIS Vector Bender plugin https://plugins.qgis.org/plugins/VectorBender/ for fun to see where that would lead us

With enough ground control points, this could work to some degree. It won't be perfect but should improve speed estimates

#qgis #gischat #mobility #datascience #MovementDataAnalytics #cycling #MobilityAnalytics

Vector Bender — QGIS Python Plugins Repository

plugins.qgis.org

Nicolas Roelandt :osgeo: reshared this.

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