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| NaviModel - Digital
Terrain Modelling |
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Applications
The NaviModel
software provides advanced tools for generation of Digital Terrain Models (DTM),
either as Triangular Regular models (TRI) or as Triangular Irregular Network
(TIN) models. In the TRI models the survey area is divided into equally spaced
triangular cells like in the EIVA Contour software, whereas in the TIN models
triangles are created based on the raw data.
Data Input
Data for modelling is imported as cleaned survey data from
NaviEdit (NED), ASCII XYZ data, run-line and profiles or raw NaviScan and
NaviPac survey files. |
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Model Generation
Models are
created for a survey area by definition of model parameters, desired cell type,
and depth data type (minimum, maximum, average, last value, standard deviation
and density).
Data Reduction
During the model
definition phase NaviModel provides facilities for data reduction by setting of
tolerances for depth variations and allowable shrinkage of model borders. |
Cleaning
NaviModel features
additional cleaning of models, either manually profile by profile in a pseudo 3D
view or automatically through a spatial plane over the model allowing handling
of data overlap.
Flexibility
Optional addition of survey data
after creation of a model provides the possibility of dividing large data sets
into more files for easier data handling.
Derived Models
NaviModel provides for the generation of derived models, substitution of one
model into another model (e.g. insertion of theoretical model into data model),
merging of models, etc. |
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Model Analysis
NaviModel features
a/o analysis of actual versus theoretical models, model manipulations, and
volume/area computations.
Data Views
Data displays comprise
a/o 2D colour-coded views and rotate able, sun illuminated 3D views with
free-flight feature and presentation of data relative to different sea levels.
Longitudinal and cross profiles are defined or loaded by use of a profile
definition curve.
Reporting
At any time during the generation
of models access to progress information and reporting is available. |
Output
NaviModel
provides data output as DTM, Contour curves, longitudinal and cross profiles,
cleaned or rejected data and screen prints. Formats comprise raw ASCII XYZ, DXF
and NaviPlot format.
Windows Display
Full system
flexibility allows personnel design and configuration of windows for preferred
display settings and layout. |
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