Fig. 6
From: Rapid iceberg calving following removal of tightly packed pro-glacial mélange
Feature tracking of TRI amplitude image pairs using the Open Source Computer Vision Library (https://opencv.org/). a Feature tracking velocities of a TRI amplitude image pair acquired at 12:00 7 June 2016 and 12:00 8 June 2016 (background image). Vectors within the white arc area show velocities at stationary or slow-moving points. We use their RMS as a measure of the uncertainty for feature tracking: 0.24 and 0.04 m d−1 for two orthogonal directions. Dashed rectangle R marks the area used for mélange thinning estimates in Fig. 5. b Feature tracking displacements from 12:00 7 June 2016 to 12:00 13 June 2016 (background image). Cyan arrows show displacements between two TRI scans, red arrows show displacements after subtracting the median displacement within the range of the map. Dashed box corresponds to the convex hull in Fig. 5e. c Feature tracking displacements from 12:00 13 June 2016 to 12:00 19 June 2016 (background image). Cyan and red arrows denote the same as b, dashed box corresponds to the convex hull in Fig. 5f
