Triton Perspective - Manual (Page 131)

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5.10.3 Bathy Change Detection
The difference between two layers can be calculated with the 'Change Detection' tool and
output as a separate DTM. This tool can be used to determine the differences between entire
DTM layers and uses the same as dialog as the A-B tool. 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.
To calculate the differences between entire DTM layers using 'Change Detection', right-click
on the DTM you wish to subtract from and select 'Change Detection' from the menu options
as shown below:
Selecting the 'Change Detection' menu option will open the same A-B window discussed in
the previous section.
The difference DTM created from this process will automatically load into the project and
can be found in the Imagery/Bathymetry file tree layer.
5.10.4 Bathy Blink Comparator
To quickly compare two overlapping DTM layers, the 'Blink Comparator' tool can be used.
The 'Blink Comparator' allows the user to quickly turn on/off a layer or can be set to cycle a
layer on/off to help identify differences in the layers.
To use the 'Blink Comparator' tool, right-click on the DTM you wish to "Blink" (cycle on and
off) and select 'Blink Comparator' from the menu options as shown below:
Selecting the 'Blink Comparator' menu option, the following window will open: