RedEdge 3 User Manual Rev 06
© 2015 MicaSense, Inc. Page 27 of 33
5. For accurate reflectance data, pictures of a calibrated reflectance panel (Spectralon or
similar) should be captured from directly overhead the panel
immediately
before
and
immediately
after each flight.
When imaging the reflectance panel, place the panel flat on the ground and ensure
that it is not shadowed by anything, that it is receiving direct light from the sun or sky,
and that the angle of view from the camera to the panel is as perpendicular as
possible (without shadowing). Avoid having the sun reflect off any surface and hit the
panel. It’s best to place your shadow just to the left or right of the panel (see below for
recommended position).
Figure 21: Capturing Reflectance Panel Image
NOTE
The camera applies a different gain/exposure optimization method for panel
captures versus captures taken in flight. You should capture images of the panel
using the
Capture
button on the Wi-Fi interface
or
by pressing the physical
capture button on the camera.
Do not use Timer, Overlap, or External Trigger modes for panel captures.
