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Feature Mapping

  

 

Feature Mapping is an interactive classification process that can be applied to poor quality airvideo or higher quality imagery including hyperspectral imagery. Although human interpretation is limited to the visible portion of the spectrum, remotely sensed images often contain many more bands than can be translated into a single RGB representation. These additional bands may be the key to distinguishing one ground cover type from another. The goal of Feature Mapping is to identify, mark, and measure features in a set of processing rasters by combining your knowledge of the study site with TNTmips’ processing power.


Prototype features identified from a few selected sample cells

feature marked with hole filling

feature marked without hole filling

TNT Feature Mapping Highlights:

  • Utilize any number of processing rasters
    Identify sample cells using point and/or polygon tool

  • Employ dimensional reduction techniques, such as computing vegetation indices and calculating principal components, to minimize number of processing rasters and processing time

  • Identify prototype features using range defined by or exact match to selected sample cells

  • Generate report with statistics for all marked features

  • Protect areas from being classified/misclassified

  • Mark features individually, using polygon, or Mark All

  • Automatic prompting to save any unsaved objects on exit

  • Define region-of-interest for classification purposes

  • Ability to draw features and prototypes directly

  • Classify imagery unsuitable for automatic classification

  • Use hyperspectral imagery

  • Apply optional hole filling when marking features

  • Optionally view sample cell ranges with values of pixel under cursor outside current range shown in red

  • Use auto-boundary tracing to convert marked features to vector polygons

  • Automatically transfer style object for feature classes to vector polygons when convert

  • Switch between marking and unmarking using Control key 

  • Cell size calibration available for ungeoreferenced images 

  • Assign raster areas to different categories for report specifics 

Just One Feature
is just one of many features and processes in TNTmips

GIS
Surface Modeling
Hyperspectral Analysis
Network Analysis
Image Processing
Watershed Analysis
Map Design
Terrain Operations
Thematic Mapping
Combining Local/Web Maps
Online Atlases
Geospatial Analysis
Image Classification
Viewing Geodata
3D Visualization
Feature Mapping
Spatial Databases
Google GIS Mashups
Custom Geospatial Analysis
Publishing Geodata

 

Feature Mapping  tutorial ...

Image Classification tutorial ...

25 March 2009  

page update: 15 Aug 12


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