README for raw imagery

DESCRIPTION

Each folder contains subfolders representing a single drone survey of a site. 
Each subfolder contains unprocessed photography from the drone. The altitude 
and clock metadata are unreliable.

METHODS

Drone surveys consisted of 1 or more overpasses attempting complete coverage 
of a site. By convention, a single-pass survey was labeled a 'survey' and a 
multiple-pass survey was called a 'map'. Surveys targeted a very fine ground
sampling distance (GSD) of ~1.5 cm for detailed coverage, whereas maps targeted
a very fine GSD (~1.5 cm), a slightly coarser GSD (~3 cm), and often oblique 
coverage to achieve high spatial accuracy in the DSM and orthomosaic products.

Some folders contain notes concerning seal disturbance, if seals were disturbed
in the coarse disembarking the zodiac (Dream 2.13.20, Dream 3.8.20), transiting 
to a take-off location (Joubins-1 2.18.20), launching the drone (Humble 2.4.20),
or adjacent research operations (Dream 3.21.20). These are chiefly important for
studies pertaining to pinniped spatial dynamics and might have little or no 
bearing on other topics.

-------------------------------------------------------
This readme file was created on 9/26/22 by Greg Larsen.