International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 
When images are combined to one larger image The maximum 
grey value difference at the seem line has to be specified and 
guaranteed by the producer. 
If more than one lens system and more than one shutter is used, 
the difference between two panchromatic or two multi spectral 
cameras has to be less than +/- 5%. That means less than +/- 20 Un 
grey values for 12 bit images. 
2.4 Test possibilities for the end user 
The scanner can be tested very easıly, using defined reference KEY \ 
cards in case of radiometry. 
Glass plates with exactly positioned test structures are used to 
test scanners and certify accurate geometry. ABST! 
The geometrical accuracy for the overall process, including Many 
film based camera and scanner or digital cameras, can be tested Organi 
by flying across test fields. These fields contain reference leading 
objects with exactly known geometrical positions. The Meetor: 
measurement within the images prove the accuracy of the The IS 
System. referen 
To test the overall process for exactly radiometric results is not toic 
so easy to handle, either with film based cameras and with Sade: 
digital systems. T pica 
If reference cards with defined grey values or colours are used, da S { 
you cannot overcome the influence of the air between reference um d 
object and camera. Reliable test methods for radiometry are and fil 
under investigation. 
Most c 
REFERENCES organi; 
enviror 
the Ext 
Diener S., Kiefner M., Dörstel C., 2000. Radiometric 
Normalisation and Colour Composite Generation of the DMC, 
IAPRS Vol. XXXIII, Amsterdam 2000 
Fraser, C. Digital camera self-calibration. ISPRS Journal of 
Photogrammetry and Remote Sensing. 1997; 52(4):149-159. 
+ ; = Today 
Hinz, A. ; Dórstel, C, Heier, H., 2000. DIGITAL MODULAR has re: 
CAMERA: System Concept and Data Processing Workflow, compre 
Proc. IAPRS Vol. XXXIII, Amsterdam, 2000 couple 
the IS( 
Hinz, A., Dorstel, C, Heier, H., 2001, DMC — The Digital Open 
Sensor Technology of Z/I-Imaging, Photogrammetric Week Consor 
2001, Eds D. Fritsch / R. Spiller, Wichmann, Heidelberg pp 93 [SO/TC 
- 103. includii 
focusec 
Taley, B.B., 1938. Multiple-Lens Aerial Cameras, in Web m 
Engineering Applications of Aerial and Terrestrial WiC 
Photogrammetry, Pitman Publishing Corporation, New York & standar 
Chicago languag 
Graham, L., 2001, Workflow Oriented Sensor Management 2. 0l 
Systems, ; 
Photogrammetric Week 2001, Eds D. Fritsch / R. Spiller, The sec 
Wichmann, Heidelberg pp 25 - 33. commi 
given i 
Referer 
"inform 
nhenon 
(ISOT, 
celestia 
into acc 
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