Sun-traps Up on the Roof05/05/2011
|New software paves the way for the use of renewable energies on roof areas. Tridicon SOLAR generates a planning instrument automatically. Part of the challenge of renewables is the search for new locations where solar panels using photovoltaics technology or solar thermal power will be efficient. Municipalities, energy suppliers, investors and citizens need a planning instrument that visualises the solar potential of roof areas taking into account exposition, slope and shadowing.|
The 3D roof scape of a city can be used as a basis for the calculation of solar potential. TridiconTM 3D software, which was developed by GTA, Germany, generates high-quality buildings with main roof types automatically. Suitable data sources for this are stereo aerial images or laser scan (Lidar) data. On request additional details like dormers and chimneys can also be modelled. Tridicon 3D exports 3D buildings into all common data formats (CityGML, 2D and 3D shape, KML, OBJ, VRML and others).
For the calculation of shadowing a digital surface model (DSM) is being used. A DSM can be generated from a point cloud which comes either from Lidar data or an automatic photogrammetric processing of stereo aerial photography. Roof scape and DSM are the basis for the automatic generation of a three-dimensional map showing the solar potential of roof areas.
The solar potential map shows the available annual solar energy for every roof area. For the correct calculation of these values each roof area is divided into tiles of an adjustable size of for example 0,25 m². For each of those tiles an individual shadowing profile for a whole year and occurring concrete shadowing periods during the course of the year are established. Every day of the year from sunrise to sunset with a temporal resolution of 2 minutes is taken into account. The unit kWh/m² per year expresses the solar potential of a roof area.
The solar potential map can be published on the internet making the information accessible for interested parties. The user can perform a search in a digital map using address information like street names and house numbers. Different colours show solar potential classification for the roof of a building.
GTA also offers photorealistic roof textures based on the original aerial photography as well as the capturing of all existing solar collectors.
On behalf of investors, energy suppliers or government and public administration, a high-quality 3D city model in level of detail 2 (LOD 2) as well as a solar potential map can be generated fast, cost-efficient and covering large urban areas.
GTA plans the commercial launch of the software solution Tridicon SOLAR for autumn 2011.
Read more about: 3D photogrammetric software aerial imagery point cloud LiDAR imagery
Supplier: GTA Geoinformatik GmbH
More news from this supplier:
Automatic Point-cloud Generation and 3D Modelling from Aerial Images
Breakthrough in Automatic Analysis of Aerial Images
Detailed 3D Facade Modelling
150 European 3D City Maps Licenced for Navigation
Apple's Lessons for the Geospatial World
GLONASS Functionality for Hemisphere GNSS Vector Products
3D Vegetation Library Added to Esri Products
FOSS4G America Calls for Workshops and Papers
3D Models Released for Christchurch City
Lidar Flight Planning System with Minimal User Intervention
Intergeo 2014 Draws Geomatics Industry to Berlin
Topcon DS-200 Robotic Upgrade to Total Station Series
GEO Business 2014 Launches Inaugural Conference Programme
Image Sensors Bring Computer Vision to Google's Project Tango
comments powered by Disqus
3D model of a real forest from airborne Lidar
The terrain was prepared from aerial ortho-image of 30 cm resolution. Lidar derived Canopy Height Model was worked at 15 cm resolution. For keeping the uniformity with Lidar derived layers, the ortho-image was used at 15 cm pixel size.