Refinement of the pattern of geological
boundaries is carried out taking into account the
phenomenon of natural generalization of the
image in transition to smaller scales. This
phenomenon manifests itself in two ways. In the
first case an area of development of formations
overlapped by a cover of loose deposits seen in
the images is increasing. This increase
apparently results from the fact that in the
transition to the smaller scales thin loose
deposits do not serve already as a screen for the
manifestation of typical interpreting features of
buried formations. In the second case several
contours are integrated into a single contour
which corresponds to the really mapped
geological body of definite composition.
Revealing the peculiar features of
petrological composition and inner structure
of mapping objects is an important moment of
the employment of RSM in geological
cartography. At this stage of great significance is
the analysis of spectral characteristics of the
bodies distinguished using RSM as well as
specific features of the structure of the lineament
field. It should be borne in mined, however, that
the determination of petrological composition
from the results of interchannel transformations
is possible only under favourable conditios, i.e. in
arid well-exposed regions. Such conditions are
not characteristic of the territory of Russia. In this
connection expert systems for the determination
of petrological composition developed at
VNIIKAM (LITHO software package) are
increasing in importance. Under conditions of
insufficient exposure these systems provide
interpolation of data of field observations on
reference outcrops and key areas for the rest
mapping territory. :
672
Combination of geological-geophysical data and
data of remote sensing methods at every stage
of map compilation and their integrated analysis
are carried out by ERDAS and ARC/INFO
software.
4.3 Compilation of the final map
The completing operation is compilation of the
final map. All the objects first distinguished using
RSM and confirmed by geological and
geophysical materials can be treated as reliable.
They are represented in the map by established
symbols. Ambiguously interpreted objects can be
shown as assumed ones.
5. CONCLUSION
This technological scheme which incorporates
the integrated analysis of RSM and geological
data, their mutual correlation and correction of
the obtained results at all stages of map
compilation provides informative character and
high quality of the map.
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996