glimpse: Open-source Software for Estimating Glacier Velocities from Timelapse Cameras and Satellite Data
Abstract
Timelapse cameras excel at continuous high-frequency observations uninterrupted by cloud cover or low light, precisely the situations where aerial and satellite platforms still fall short. However, the ability of a ground-based camera to resolve glacier motion is limited by its oblique perspective of the glacier surface. We present a novel feature-tracking algorithm that can estimate velocities from photographs taken from one or more camera positions, optionally constrained by elevation and velocity measurements derived from aerial or satellite imagery. Several additional algorithms help ensure the geographic alignment of the various data sources for successful large-scale processing: correcting for camera motion in long timelapse sequences, coregistering repeat elevation measurements, and aligning oblique photographs to aerial and satellite imagery.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMC042...05W
- Keywords:
-
- 0720 Glaciers;
- CRYOSPHERE;
- 0758 Remote sensing;
- CRYOSPHERE;
- 0762 Mass balance;
- CRYOSPHERE;
- 0798 Modeling;
- CRYOSPHERE