general workflow

The workflow and steps here are built partly from the steps outlined in the excellent Historical Orthoimage tutorial, written by Luc Girod. It has been modified to include specific KH-9 pre-processing steps, as well as optional historic air photo preprocessing steps for historic air photos.

The other main difference is the use of spymicmac.register to find control points automatically, using an orthorectified image and external DEM.

• micmac processing files
  • MicMac-LocalChantierDescripteur.xml
  • MeasuresCamera.xml
  • id_fiducial.txt
  • file structure
• image pre-processing
  • KH-9 pre-processing steps
  • historic air photo preprocessing
• fiducial marks
  • SaisieAppuisInitQT
  • Kugelhupf
• re-sampling the images
• computing tie points
  • creating a mask
  • filtering tie points
• finding the relative orientation
  • fixing the orientation
• computing the relative orthophoto
  • creating the orthomosaic using Tawny
• automatically finding control points
  • necessary files
  • relative to absolute transformation
  • gridded template matching
  • iterative outlier removal
  • final result
• computing the absolute orthophoto and DEM
  • creating the orthomosaic using Tawny