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Open-source web-based tool for area accessibility assessment in the context of disaster management – based on satellite data and geovisualization.

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DIGENTI Apps

Open-source web-based tool for area accessibility assessment in the context of disaster management – based on satellite data and geovisualization.

The tool gives an overview of the accessibility of the settlements in the Area of Interest in Colombia using a routing API and remote sensing data.

Moreover, the repository includes a set of snippets and examples, including routing experiments combining a routing API and remote sensing data.

Accessibility Interface

The Accessibility Interface is located in app-access.

The interface visualizes for each settlement:

  • Accessibility by road (vehicle)
  • Accessibility by path (walk)

Overview of the accessibility of each settlement in the area: Area accessibility overview

Reachability of a settlement by road with time isolines: Settlement reachability

If a settlement is not directly accessible by road:

  1. Provide accessibility data to the nearest road:
    • Distance
    • Elevation profile
    • Passable areas (%, polygons)
    • Walkable areas (%, polygons)
  2. Provide helicopter landing areas (within a given distance from the settlement)

Data to the settlement's nearest road: Missing settlement reachability

Potential helicopter landing sites around a settlement: Potential helicopter landing sites

Summary of the remote sensing data-based routing concept: DIGENTI_RemoteSensingRouting

Dependencies

This is the client part of a modular architecture. In order to access the satellite data you'll need to install the following packages:

Docs

Further information of the project can be found in the following research articles and documentation:

Data

The remote sensing data is based on the Tandem-X WorldDEM 10-m resolution digital elevation model (DEM) with complete coverage for the area of interest.

Tools

Geo tools

Routing

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Open-source web-based tool for area accessibility assessment in the context of disaster management – based on satellite data and geovisualization.

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