12/4/19

Blender GIS tutorial Open street map data in Blender




In this video I am going to show about a plug in named Blender GIS, which is free to use and excellent for creating geo referenced city. It has many functionality including Google, Bing, OSM map data download with satellite data. Also SRTM height map data download. Osm download function will allow you to download and create cityscape with in minutes in automatic way. This plug in allow you to place the buildings, GIS data, ESRI shape file exacltly on top of the geo referenced mes. It also has the export functionality. You can easily geo reference camera and use terrain analysis with this plugin.
High resolution map download also possible.

Blender GIS download : https://github.com/domlysz/BlenderGIS


Basemaps

Display web map service like OpenStreetMap directly in Blender

SRTM download

Get SRTM topographic data and apply it as height texture

ESRI Shapefile import / export

A Shapefile is a popular geospatial vector data format for geographic information system software.

This tool can import into Blender most of shapefile feature type. It can also uses attributes data to define Z elevation values or Z extrusion values.

Exporter script can export a mesh to pointZ, polylineZ or polygonZ shapefile. Note that currently this tool does not re-export attribute data include in the dbase file linked to the shapefile. So if you want to import a shapefile for edit it into Blender and then re-export it, you will lose attribute data.
Geo referenced raster importer

Import geotiff or common image format georeferenced with a world file.

You can import the raster as a plane mesh, as background image for orthographic view, as UV texture mapping on a mesh or as DEM for warp a mesh with the displace modifier.

ESRI ASCII GRID format is also supported through a dedicated import tool.
OpenStreetMap import

Georeferenced render output

This is a tool to create a new camera correctly setup for produce a map render. Georeferencing data (worldfile) are writing in text file accessible from the Blender text editor.
Delaunay triangulation & Voronoi diagram

This script computes Delaunay triangulation in 2.5D. This triangulation is suitable for create a 3D terrain mesh from points cloud or contour lines

The script can also compute Voronoi tessellation in 2D which is the dual of delaunay triangulation. Voronoi diagram is suitable to make neighborhood analysis map.
Terrain analysis

This part of Blender GIS is designed to assist in the analysis of the topography : height, slope and azimuth (aspect).

There are 2 tools, one to build materials nodes setup for Cycles engine, and a second to configure the color ramp as usual in common GIS software (reclassify values and apply color ramp presets).
Georeferencing management

Handle various projection systems with re-projection capabilities and compatibility with some others addons