4.1 PPCSoft software system
The basic purpose of this software system is computer
support to analytical orientation of photogrammetric stereo
model and to numerical restitution on analog stereoplotters.
Currently, this software is mainly used for model orientation,
because digital photogrammetric restitution has replaced
numerical one.
Although the software conception was established already
in 1987, it so far remained unchanged until nowadays, ie the
current software version used is still 1.0. During model
orientation, the software enables the following:
e analytical relative orientation using y-parallax
measurements;
e analytical absolute photo model orientation using
spatial transformation;
e calculation of final photo model orientation elements
considering different construction characteristics of
instruments used (Wild A7, A8, A10).
Special attention within software development is paid to the
procedure for analytical absolute orientation of photo
e measurement of points in dynamic mode that can be
controlled with time and distance criteria,
e browse and editing of measured data.
After orientation has been completed, the measured data
are represented with absolute (object) coordinates.
Otherwise, model coordinate system is used.
Considering that all the data are integrated within a single
data base, PPCSoft enables export of the following data
categories:
e list of all control points for the whole project;
e list of measured points in absolute coordinate system;
e reports on orientations of all photo models within a
project with the following information:
e general information on photo model (photo model
label, operator, instrument label, origin of the
coordinate axes, axes scales, etc.),
e final orientation elements,
e corrections and weights for all observations in
adjustment,
e Statistical parameters on the achieved accuracy.
Project: TESTI
Trig. sect.: 7E30, 7D30
Photo scale: 13000 Camera cons.:153.13 [mm
Operators:Mitic & Mihajlovic Instrument:A7-626 Photo model :101-102
Map sheet :DL-2
Start pos:500.00 500.00 450.00 Axis type : AerFot Axis scale :1.0 1.0 1.0
Map scale : , 9000
T T
Last point| 1234 |
| i
1
530.89 |
1
T T
456.67 | 265.12 | Reg start
| l
S-Start R-RegStart O-Orijent M-Measure L-List I-Info H-Help E-End
Absolute orientation
NT VY VX VZ WY WX WZ DY DX DZ
T210 0.22 0.15 -~-0.01 1.5 2.0: 0:1 0.9 0.9 1.3
T211 -0.02.-0.15 -0.06 0.2 1.0 0.3 1.0 1.0 1.4
T209 0.04 0.13 0.03 0.2 0,8 0.2 0.9 0.9 1.2
V1013 «0.15 -0.15 0.12 1.01,0: 0.7 1.0 1.0 71.3
V1012 -0.13 .—70.12., -0.04 0.8... 0.7. .-0.2 0.8 048: 14:2
MO = 11.25 MY = 17.49 - 13.45 MZ - 5,67 [cm]
Command > Absolute orientation is correct ? (Y/N)
Figure 1 : Report on results after absolute orientations
model. For gross error detection, "Data Snooping" method
is applied. Stochastic data model assumes that model
coordinates are not correlated and that they all have weight
one, whilst coordinates of the control points have different
weights. The procedure is designed using ergonomically
developed functions. These functions, using menus and
dialogues, help operator to measure control points, to
perform adjustments, to check the results and to browse
and edit input data efficiently and easily. Control points for
the whole project are available at any time, since they are
stored in a single data base created for that project.
Within numerical restitution PPCSoft enables:
e point measurement in static mode with manual or
automatic point numeration,
Tho whole application is integrated and can be started with
a single command. All executables of the software system
occupy less than 1Mb of disk space, and the whole
installation occupies less than 2Mb.
4.2. BINEM software system
The main purpose of this software system is a computer
support to block aerotriangulation using independent
models. Considering the character of the task, the system is
divided into three integrated software sub-systems:
e |FM sub-system for support to independent model
measurements
e AFM sub-system for analytical generation of photo
models using comparator measurements
246
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996
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