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The method might even be extended to include the sandwich
equidensity technique 3 .
4, The reseau grid marks recorded on MKF-6 photos permit to
orient component photos on the MSP-4 projector screen
extremely fast and much more exactly than by object contours.
The reseau grid marks provided in the film plane of the
MKF-6 are exposed on each component photo together with
the scene and then used for orientation on the MSP-4,
Composite pictures produced from three component photos
testify to the excellent definition of the cross marks
as well as of the overall image (Fig, 9). This is beoause
the optical axes of the channels are parallel within better
than 10", calibrated focal lengths differ by less than 5 pm,
shutters operate synchronously within 1 %, and positioning
of component photos in the MSP-4 is highly exact,
2. The design ooncept of the MSP-4 Multispectral Projector
allows to precisely compose colour presentations from
imagery obtained with other cameras.
The specifications of the MSP-4 (Fig. 2) permit to project
other frame sizes than that of the MKF-6 and to record the
resulting piotures with the reflex camera or photocassette,
Composite colour presentations oan thus be prepared, for
example, from Landsat or Skylab imagery (Fig. 10). The
MSP-4 has sufficient freedom of adjustment to achieve re-
gistration between component photos taken with less con-
&ruence than that of the MKF-6, although colour fringing
at image details may then oceur.
6, MKF-6 photos permit to locate interpreted detail to a
high accuracy and to derive geometrical data.
This fact is explained by the performance parameters speci-
fied in Fig. 1. Together with camera stabilization, for-
ward motion compensation and less than 3 pm radial distor-
tion, these parameters ensure a high photographic and
geometric precision of the photos. Hence, MKF-6 photos are
not only suitable for ROT totom but also for photo-
grammetry, Each of the MKF—6's six individual cameras
conforms to the conditions of a metrio camera, with speci-
fied data on calibrated focal length, principal point
position and reseau grid marks in the film plane. The
original black-&-white MKF-6 photos may be used for photo-
grammetric oompilation either directly on plotters of
125 mm focal length or, after transformation, on any plot-
ter, Aerotriangulation, mapping and map revision (Fig. 11)
from satellite photography is presently carried out for
scales of 1:100,000 Or smaller 5 .