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Figure n° 6.North Wall of the Quitaraju Peal:
(6041 meters) in the Cordillera Blanca of Peru.
Oblique photography.Four levels of grey.
(A):rocks.(B):firn.Double cross :indecision between
fresh powder snow and clouu.Its length,990 meters,
is equal to the thickness of 10 slices of a constant
height slicing radar around a conventionnal 180°
way-point,and equal to the length of 100 elementary
cells for terrain analysis from Metric Camera or
Large Format Imagery after an optical filtering cu
ring a microphotography.
Figure n° 8. Synthetic image (scale 1:3500 in the
centre) elaborated after micro-densitometry of
an aerial photograph-Kodak 2443 IR Color film
Filter : Wratten 22.Four levels oi grey.
Bla.ck areas (B) and (10) locate surface-water.
The white areas are trees.Location :Rennes (France)»
Raster 0,5 millimeter.Encoding : 4 bits.
The obliquity from nadir,pproximately 30 °/is similar
to the depression angle of a Forward Down Looking
Radar or Infra-Red camera.Storage volume for a
common strip (3 kilometers by 3000kilometers) is
approximately equal to 4 Gigabits.
Figure n° 7. White natural ground, mark close to the
Assal Lake (Republic of Djibouti).
X and X' s„re respectively the geographic and the
magnetic bearings to a ground based radioelectric
provisionnal beacon.
Eight levels of grey.synthetic image with a cell
(equivalent pixel) resolution of 0.1 meter.A and B
mark the extreme values of grey which are introdu
ced in the synthetic head-up display of the plane.
Figure n° 9.Synthetic image (scale 1:3500)
elaborated after micro-densitometry of a micro-
photographical enlargement (234>5 times linear}
of a Metric Camera photograph after transfer on
a high contrast B. and W.film.Four levels of grey.
Raster : 0,5 millimeter.Image n° 270.
Black areas(A for example) and white areas (B)
locate respectively surface water and bare dry soil.
Encoding : 4 bits. Airstrip :similar to figure n° 8.
Location : Tremargat area close to the city of Ros -
trenen (France).Storage volume : 4 Gigabits.
