Rolleimetric RS - A New Digital Image Processing System 
Thomas Luhmann und Wilfried Wester-Ebbinghaus 
institut für Photogrammetrie 
und Ingenieurvermessungen (IPI) 
Universitat Hannover 
West-Germany 
Abstract 
Using réseau-scanning techniques for digital photogrammetric 
recording digital images with high resolution and geometric 
Stability can be obtained. Based on this principle the new 
réseau-scanning imaging system Rolleimetric RS, consisting of 
a A/D-conversion device for measurements of analogous photo- 
graphs and a digital camera, is presented. 
Zusammenfassung 
Digitale photogrammetrische Bilderfassung mit hoher Auflösung 
und präziser Geometrie kann durch réseau-abtastende Systeme 
realisiert werden. Auf dieser Basis ist das neue Rolleimetric 
RS zur Digitalisierung und Messung analoger Vorlagen sowie zur 
On-line-Aufnahme vor Ort entwickelt worden. 
31. introduction 
CCD-matrix sensors offer a solid state image surface and 
therefore seem to be useful for photogrammetric applications 
like A/D-conversion of analogous photographs or on-line 
digital measurements. 
Usual CCD-sensors have an image area of less than 100 mm: 
(TV standard), which is too small to achieve a sufficient 
image scale. Larger image formats can only be recorded by 
single image frames, which later can be composed to a total 
image. High optical and mechanical stability of the 
instrument is required to obtain a precise orientation 
of single image frames in the projection space. 
BROWN and FRASER [1986] present a flad bed scanner with CCD- 
matrix sensor, which allows on-line digital processing 
of the present image frame. The system can be used as 
an high accuracy automatic mono-comparator. 
ALBERTZ [1986] discusses a grid-like arrangement of several 
matrix sensors to achieve simultaneous recording 
of a total image. Using optical systems or bundles 
of optical light guides single image frames are projected 
into the sensors' planes. 
110