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e BIN sub-system for block adjustment and data
analysis
Instrumental model generation (BINEM-IFM): The
purpose of this software sub-system is complete computer
support to measurements of independent models for block
aerotriangulation. The most significant functions that are
supported during photo model measurement are (Figure 2):
e analytical relative orientation based on indirect
measurement of y-parallax using o- movement,
e analytical determination of projection centers using
measurements on "resau" plates at end positions of z-
axis,
e listing and editing of measured data,
e On-line controls during measurement:
e Status of the measured points,
e control of the point numeration,
e control of connections of neighbouring photo
models in row,
e preliminary adjustments of rows for checks of
control points, etc.
The most significant functions that this subsystem provides
are:
e transformation of monocomparator or stereo-
comparator measurements to photo coordinates and
creation of data base containing photo coordinates,
e analytical generation of independent photo models
with efficient tracking of results and reports,
e data export using simple ASCII formats for data input
to other software packages.
Block adjustment using method of independent
models (BINEM-BIN): This sub-system is the most
important part oft the BINEM software system. Efficiency of
the block aerotriangulation adjustment has been achieved
by efficient detection and elimination of gross errors during
measurement or analytical generation of photo models.
Additionally, special data organization provides interactive
adjustment which yields extremely good results during the
Stage of detection of remaining gross errors.
BINEM- Data acquisition modules
Project: :TEST1 Phot scale: 10000 Camera Cons. 153.13 [mm
Operators:...4. 4... I leen ais Instrument:A7-123 Instr. basis:100.00
Trig sec.:..... re Row label :Row-1 Photo model :100-101
Start pos:500.00 500.00 250.00 Axis type :AerFot Axis scale :1. 1. 1.
Esc -—End
Main menu :
fl Parameters input
f2 Start encoders
f3 Relative orientation
f4 Independent model measurement
f5 Object points measurement
f6 Determination of projection centres
f7 List/Edit of measured points
f8 Control of models connections
Press <H> for Help
Figure 2 : The main menu of the BINEM-IFM software subsystem
The result of independent model measurements within a
project is a data base. The contents of this data base can be
exported to file using simple ASCII format. This can be used
for data input to other photogrammetric software systems
for block adjustment. If the adjustment is to be done using
BINEM software, then export of data is not necessary, since
direct access to the data base is provided within all BINEM
modules.
Analytical generation of independent models
(BINEM-AFM): Method for analytical generation of
independent models has been used very rarely and it has
lost its significance with the appearance of the bundle block
aerotriangulation. However, in the midle 80-ies analytical
generation of photo models was still alternative to
measurement of independent models. Therefore, this
method is equally supported.
247
The most significant facilities at the stage of preparation for
block adjustment are :
e automated generation of photo models list,
e formal and logical data control before adjustment,
e selection of parameters that are of significance for
adjustment,
e number of iterations,
e Correction for earth curvature,
e maximum point frequency (numer of model where
of a point),
e weights for measurements of projection centres,
e generation of fictitious models for incorporation of
additional observations in block adjustment
(Mihajlovié, 1986): information on object geometry,
surveying measurements of distances, directions,
azimuths and coordinate differences, etc.
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996
