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MIROS 
A new software for Rollei RS1 digital monocomparator 
Martin Knobloch, Torsten Rosenthal 
Institut fiir Robotik und ProzeBinformatik 
Technische Universitit Braunschweig, D-3300 Braunschweig 
Commission V 
PURPOSE: 
A new powerful software for Rollei RS1 - digital inonocomparator has been developed with the experience and 
knowledge gained during the past five years of practical use of the Rollei RS1. 
Now, one software package is capable of measuring different signalazation types and can be used for different 
Réseau Cameras in particular for all the different Réseau Cameras manufactured by Rollei Fototechnic. 
With the new advanced software program, the measurement procedure is fully automatic and codes for point 
numbers can be recognised. Individual measurement tasks are programmable with an integrated interpreter by the 
user. 
KEY WORDS: Rollei RS1, Réseau, image processing, interpreter, ellipse, signal identification 
INTRODUCTION 
In cooperation with the Institute for "Robotik und Pro- 
zeBinformatik" and the Institute of "Photogrammetrie 
und Bildverarbeitung" of the Technical University 
Braunschweig, as well as the company Rollei Foto- 
technic, a new software for digital image evaluation 
with the Rollei Réseau Scanner RS1 was developed in 
a semester paper. 
The system is based on the technique for réseau mea- 
surement, developed by Prof. Dr. Wester-Ebbinghaus, 
and on the experiences made with the Scanner RSI 
and the corresponding software. 
In the meantime, MIROS has become a very flexible 
program which makes possible to measure fully auto- 
matically ellipse point markings in negatives. Any 
format, including the LFC camera format can be mea- 
sured with this program. Also the choice of the réseau 
dimensions is unrestricted, meaning that it can be 
measured in negatives either with or without illumi- 
nated réseau. 
Due to this flexibility, it was made possible to measure 
in the new format of the Rolleiflex 6008 metric [GS 
92]. An interpreter was integrated into the system to 
enable the user to structure his own program run easi- 
ly. This interpreter allows the experienced user to 
write own measurement programs which makes exte- 
rior program interferences redundant. For standard 
applications, suitable interpreter files can be generated 
via existing program generators. A further significant 
capacity feature is the automatic adaptation to different 
negative illuminations through the scanner illumination 
regulation. To assure a perfect control, a distance op- 
timisation to receive minimal distances between the 
points is effected which keeps at the same time illumi- 
nation differences on a minimum. This fact together 
with parallising the measurement via sensor move- 
ments reduced the measurement time remarkably. In 
recent tests, 300 signals were measured in only 7 
minutes which corresponds to a measurement time of 
1.4 seconds per point. One reason for this high speed 
must be seen in the ellipse measurement which is 
adapted to special situations. 
A further acceleration was achieved with a highly 
mechanised image orientation. In most cases, it is now 
sufficient to give only on cross / mesh of the image to 
be able to determine the position of the image. A dis- 
tinctive feature of ellipse measurement is the automatic 
point number identification. This was achieved by 
segment codes which were perfectly identified in first 
tests. In special cases, it is nevertheless still necessary 
to measure points manually by using the cursor. This 
measurement technique is as well supported by 
MIROS and is extended by the possibility to adjust the 
cursor also in the sub pixel area. The underlying Al- 
gorithms will be analysed in the following chapters. 
INTRODUCTION IN THE SYSTEM 
Measurement Setting 
For running the MIROS measurement program, any 
DOS - computer of the 80x86 series is sufficient, 
which needs to be equipped with a numeric coproces- 
sor.