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coordinates and the parameters from the "control files" to reconstruct the 
models without repeating the external orientation. 
The part of the subsystem concerned with the compilation of information on 
features that is based on stereocompilers, allows for the use of simple and 
fast compilation techniques after a minimal preparatory work on the 
orientation of the stereo-orthophotos (i.e. shifting and rotation of 
stereomate in its own plane). The digitized information is fed from the 
subsystem into the external storage devices of the land information system 
via the editing facility enhanced by the editing techniques inherent in the 
design of stereocompilers. This compilation subsystem allows for a more 
complete exploitation of the collected information in the land system's data 
base by supporting the generation of various output forms with combined 
pictorial and graphical presentation of information such as orthophoto maps 
with various line-drawn overlays. Also, the field work related to the 
establishment of a data base comprising field checking, interpretation and 
collection of semantic information that is not contained in the original 
photographic records, can be conveniently based on orthophoto mosaics and on 
stereo-orthophoto prints instead of the original aerial photographs. In 
general, it can be stated that a photogrammetric information compilation 
system composed of the described subsystem for compilation of detailed 
information and an analytical plotter-based control densification subsystem, 
represent an economical and effective variant well-suited to the needs of an 
integrated multipurpose cadastral information system, due to the ease with 
which it can be exploited by various users, and due to the flexibility in its 
organization which permits its adaption to a fully centralized cadastral 
system as well as to a cadastral system administratively organized into a 
network with the activities distributed between the central office and the 
regional offices of the country (van Wijk, 1982). It should be underlined 
that a stereo-orthophoto-based compilation subsystem whose stereo-orthophoto 
generating components do not have the capability to compile the necessary 
auxiliary digital information on terrain elevation, and which perform the 
printing of the orthophoto and the stereomate in a sequential mode, 
| represents a substantially restricted alternative. In this case the optimal 
configuration of the subsystem is upset by the need for some additional 
components for generation of digital terrain models or profiles, and to a 
lesser degree by the sequential instead of the simultaneous generation of the 
orthophotos and stereomates. 
  
  
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These examples of possible configurations of on-line photogrammetric 
information compilation systems, although by no means exhaustive, are 
sufficiently demonstrative of the capability of analytical photogrammetry to 
satisfy practically any requirement that may be posed by a geo-coded 
information system. It is evident that, by careful system analysis, a proper 
selection of hardware and software can be made, and the optimal version of 
the compilation system determined. However, these examples also indicate 
implicitly the need for further development of procedures, based on the 
mathematical tools of operations research, that will enable both the system 
designers and the users to objectively evaluate the advantages and 
deficiencies of various hardware configurations and software designs. 
  
SE. AIR WE oem CNN. ONES We Vu 
INSTRUMENTATION FOR PHOTOGRAMMETRIC DIGITAL IMAGE PROCESSING 
  
  
  
  
There are four categories of images or records which could be considered as 
carriers of input information for photogrammetric processing and analysis: 
  
an saw | ONE E SU 
- original analog images (e.g. frame camera photographs) 
- original digital images (e.g. array camera records)