[sfm] Enhance SfM report with track length statistics #1088
[sfm] Enhance SfM report with track length statistics #1088

Add a track statistic section to display the min, mean and max observed
track length.

openMVG/openMVG,openMVG/openMVG,openMVG/openMVG,openMVG/openMVG,openMVG/openMVG