A) I want to orthorectify and make a mosaic of an area, which for the half area i have a WorldView satellite image and for the other half a Quickbird satellite image. What are the steps except from the standard satellite orthomapping procedure? In the standard procedure i can choose one sensor type.
B) In my DEM i have some holes without data. In orthomapping procedure can i use 2 DEMs ( my local DEM and for the holes retrieve data from a world DEM) ? or other ideas (create a new DEM from the combination of local and world DEM, which i will add it in orthomap procedure perhaps?)