absolute geometry

After computing the relative orientation of the images and the relative DEM and orthomosaic, the next step is to register the images to reference DEM or orthoimage, compute the bundle block adjustment, and compute the absolute DEM and orthophoto.

• First, spymicmac.register.register_relative() is used to register the images to the reference DEM or orthoimage and compute the bundle block adjustment to refine the camera parameters and orientation.

• If using a large number of images, it might be preferable to process and register the relative DEM/orthomosaic in smaller blocks. If this is done, the orientation of each block should be re-combined before computing the absolute DEM and orthophotos.

• Finally, mm3d Malt is again used, this time to compute the absolute DEM and orthphotos. As before, mm3d Tawny can be used to compute the orthomosaic.