„13 - 
The high flexibility of the on-line methods when used for 
aerial triangulation 1s enhanced by the fact that the measurements are 
made on discrete points. Thus, the real-time requirements are less 
stringent and real-time programs of considerable complexity can still 
be written in higher languages. The times for near-real-time computa- 
tion are also quite negligible in comparison with the time required to 
collect the data, and even more so when taking into account the good 
quality of the information entering the subsequent off-line computa- 
tions, and the fact that a part of the actual processing is already done 
simultaneously with the data collection. As indicated in [7] the data 
collection time on a man-machine analytical instrument can already be 
two to four times shorter than on the classical instruments. Better use 
of all the available methods and techniques that will evolve with 
experience will certainly lead to more favorable results 
Also, the ongoing development of automatic correlators holds 
the promise of reducing by several orders of magnitude the time needed 
for the collection of information, and to make possible the quick per- 
formance of large numbers of redundant observations. With the use of 
large background facilities and dedicated computers of proper capacity 
the procedures for on-line strip and block adjustments are within the 
reach of present-day technology. The economics of such procedures are 
questionable but the capability of analytical instruments to reach deep 
into the realm of postprocessing of data is not. But, even if one dis- 
regards completely the last two remarks about automation and adjust- 
ments as not fully confirmed, all the other considerations and their 
implications clearly indicate the advantages offered by analytical 
instruments for densification of control. One should remember that the 
off-line computational methods were not chosen for analytical aerial 
triangulation on the basis of their merits but out of sheer necessity, 
since the early computers did not have the speed required for real-time 
and near-real-time operations. 
5. COLLECTION AND PRESENTATION OF DETAILED INFORMATION 
  
The numerous methods and techniques for collection and proces- 
sing of detailed information and final presentation of results are in 
contrast to orientation procedures, difficult to discuss in a general 
manner. Since the final output may be a line-drawn document, a numeri- 
cal file or a pictorial record, and since all these output forms may be 
generated for a large spectrum of applications, not only in surveying 
and mapping but also in different branches of science and technology, 
it is evident that many interesting facets cannot be adequately covered 
in a short presentation. Nevertheless, even a general analysis of 
basic procedures and techniques can reveal quite clearly the signifi- 
cance of analytical instruments in this part of photogrammetric informa- 
tion processing. For convenience the presentation is divided into four 
groups. The first three concern the cartographic applications according 
to the type of output (graphical, pictorial and numerical), and the 
fourth one the non-cartographic applications (close-range photogram- 
metry). In all of these the potentials for automation of processes is 
indicated. 
5.1. Graphical output 
  
Graphical output is the classical storage medium in photogram-