Figure 1. (a) Evan Thomas DEM showing combined horizontal and vertical GCPs, and (b) orthoimage mosaic produced for the Evan Thom-
as survey with checkpoints shown. Horizontal only checkpoints are shown as black triangles, with vertical only checkpoints shown as
white circles; (c) Sunwapta DEM, showing combined horizontal and vertical GCPs, and (d) orthoimage mosaic produced for the Sunwapta
survey with GCPs shown. Combined horizontal and vertical checkpoints are shown as black triangles, with vertical only checkpoints
shown as white circles.
Figure 2. Kernel density plots showing checkpoint discrepancies for (a) Evan Thomas, and (b) Sunwapta (Gaussian kernel, 0.02 bandwidth).
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
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