Fig. / 
  
orientation elements are being considered present in a specific photogrammetric 
measuring system, while the notation Oi is used 1f only a group associated 
With a certain camera station I is being regarded. 
B. The control data and the associated residuals. 
It is common practice to refer to points known with their absolute po- 
sition as absolute control points, to points known with either one or two 
positioning parameters as partial control points, and to points not known at 
all with respect to their absolute position, as relative control points. Be- 
cause all these points belong to the object photographed, it is conceivable to 
refer to them in their totality simply as control points, and denote their 
spatial positions by X , while the spatial location of any one individual 
point J shall be denoted by Xj « In case the given control point coordinates 
are not flawless, it will become necessary in a general solution to treat these 
parameters like measurements and allow for corresponding corrections in the 
least squares solution. The designation V refers to the corrections of all 
, control data and correspondingly Vj is being used if only a specific control 
point "J" is considered. 
C. The plate measurements and the associated residuals. 
As described in (A), any individual ray within a photogrammetric bundle 
is unambiguously positioned by two plate measurements x and y. In analogue to 
the above notation, we shall denote all plate coordinates involved in a spe- 
cific photogrammetric measuring system by X and the plate coordinates of a 
specific image point, on a specific plate by Xije Correspondingly, we denote 
the total number of plate measurements and their residuals by ( and v 
respectively, and the plate measurements and thelr residuals associated with 
& specific point, on a specific photograph by Qj and Vij. 
The object space (the model) can be visualized as the integrated effect 
produced by the intersections of corresponding rays, each of which ls po- 
 BSitioned in & Specific oriented photogrammetric bundle according to the 
corresponding image location as stored on the specific photographic record.