Dataset: Ducks Unlimited Marsh Terraces BGREN Mosaic
Date:    2019-07-25

Dataset Abstract:

This dataset consists of unmanned aerial system (UAS) imagery taken from
a DJI Phantom 4 Pro carrying a MicaSense RedEdge 5-band multispectral
camera near Golden Meadow, LA in late July 2019. Images were taken with
the goal of monitoring the efficacy of marsh terraces in helping to
protect and restore coastal wetlands.

Purpose: Collection of data is to provide visual representation of the
study area in order to assess marsh terrace effectiveness.

Data Description:

Imagery was collected using a MicaSense RedEdge sensor, a five-band sensor
that produces an image for each band.

The bands are blue, green, red, red edge, and near infrared.
Center wavelengths are 475 nm, 560 nm, 668 nm, 717 nm, and 840 nm.
The bandwidth for each is 20, 20, 10, 10, and 40 nm, respectively.

The data has been processed into an orthomosaic using Agisoft Metashape.
The data has been converted into reflectance units using a reflectance
panel, yielding results that should reside between 0.0 and 1.0.
The mosaic is still subject to irradiance changes in flight, and
also exhibits some specular reflections, which can affect the values
and put them outside the normal 0-1 range.

Band 6 is an alpha data band. 0.0 represents NoData, and this has been
specified in ArcMap and should display correctly in it and other GIS
software.

The orthomosaic is in 32-bit floating point
BGREN (blue, green, red, red edge, NIR) GeoTIFF format.

NOTE: This data contains significant sun glint. Masking out those areas
in the raw imagery produced a worse product, so it has been left as-is.
The underlying land data is fine, and looks solid in ArcMap using a
"Percent Clip" stretch with a min of 0.5 and max of 49.

Geographic Information:

Projection: WGS84
Horizontal: degrees
Location:   29.405959 (top)
           -90.308230 (left)
           -90.296001 (right)
            29.394265 (bottom)

Point of contact:

Robert Moorhead, rjm@gri.msstate.edu
Lee Hathcock, hathcock@gri.msstate.edu