Fig. 1.5 Judging on very low altitude photography results by 
St.Mueller, M.Hoffmann and St.Voigt 
This requires a new definition of "Single Images in 
Conservation". From modifying the conventional image 
definition a first suggestion for the term Single Images in 
Conservation is "Sources with Geometric and radiometric 
and/or pseudo radiometric Information with respect to the 
human culture", see figure 1.4