GrandLeez

Tutorial index

Download

• You can find this dataset at :http://logiciels.ign.fr/?Telechargement,20
  Datasets are available at the bottom of the page, in part test datasets. Then, UnZip the ".zip" archive.

Presentation

This dataset was created by L.Girod at the University of Oslo, Norway. This dataset was acquired to model a volcano model created by O.Galland. File present in the directory are :

• 200 images : R0040438.JPG ... R0040637.JPG taken with a RICOH GR DIGITAL 3 (800x600 px).
• Geolocation of images : GPS_WPK_Grand-Leez.csv
• File with images neighboor : FileImagesNeighbour.xml
• 2 commands scripts : UASGrandLeez.bat and UASGrandLeez.sh
• File with detailed commands : cmd_UAS_Grand-Leez.txt
• 2 file for coordinate system transform : SysCoRTL.xml and </>SysCoBL72_EPSG31370.xml</i>

During this tutorial, we will approach direct georeferencing concepts. We will apply the MicMac processing flow to process a forest Canopy Surface Model. For more details, go further in tutorials or directly in commands pages. This dataset is provided by "l’Unité Gestion des Ressources Forestières et des Milieux Naturels (GRFMN), Université de Liège". Contact: jo.lisein@ulg.ac.be

Tutorial

Conversion of image coordinates

OriConvert is used for 5 purposes:

1. Conversion of the embedded GPS data into the micmac format
2. Generate the image pairs file
3. Change the coordinate system (from WGS84 to a locally tangent system)
4. Compute relative speed of the camera (for GPS delay determination)
5. Select a sample of the image block (PATC) for camera calibration.

mm3d OriConvert OriTxtInFile GPS_WPK_Grand-Leez.csv Nav-Brut-RTL ChSys=DegreeWGS84@SysCoRTL.xml MTD1=1 NameCple=FileImagesNeighbour.xml CalcV=1 ImC=R0040536.JPG NbImC=25