Triton Perspective - Manual (Page 33)

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Re-merge DTM: Applies user corrections and line changes to the DTM.
For more information about the Re-Merge DTM tool, visit Section 5.5.
Batch Export to GeoTiff: Allows the user to export all bathymetry DTMs in the file tree
to GeoTiff imagery files.
Export KML: Exports a KML file of the selected bathymetry DTM file(s).
Export XYZ: Allows the user to export the selected bathymetry DTM in the file tree to
an ASCII XYZ file.
A-B: Subtracts co-registered DTMs to look for changes to bathymetry. This algorithm
does a direct pixel to pixel comparison at each grid node.
For more information about the Bathy A-B tool, visit Section 5.10.2.
Blink Comparator: Toggles a sidescan layer on and off at a set cycle rate to get a visual
comparison of the same location in two different sidescan layers or mapping events.
Change Detection: Subtracts co-registered DTMs to look for changes to bathymetry.
This algorithm differs slightly from the A-B algorithm in that it also includes a statistical
neighborhood approach to account for mis-registration between layers. Operating the
Change Detection tool is the same as the A-B tool.
Statistics: This gives an overview of the data used to create the image. Included in the
statistics window are the following:
 Allocated Coverage: This is the number of square nautical miles which the tiles used
to store the data in the DTM file represent.
 Actual Coverage: This is the number of square meters of the actual ensonified area.
 Total Lines: This is the number of lines included and used in the creation of the
mosaic file
 Along-Track Distance: This is the combined along-track distance of all lines included
and used in the creation of the mosaic file.
Add Lines: Allows the user to add other raw data files in the project to the DTM.