International Archives of Photogrammetry and Remote Sensing, Vol. 32, Part 7-4-3 W6, Valladolid, Spain, 3-4 June, 1999
geographic coordinate system or export of the original images
with the associated registration model and the matrix of the
relative positioning errors.
For interpretation and analysis tasks, the registration model
allows to navigate through the set of the original images on the
screen. This fast on-line computation has the advantage of
preserving the original image signatures for photo interpretation
purposes and allowing application of sophisticated multispectral
processing to corresponding pixels.
The software functionality is completed with a facility to update
a map with standard symbols and annotations or by using
previous interpretation results from current registered
spacebome and airborne images. It is particularly interesting for
management of temporal changes of sites (e.g., with natural
disasters).
Photogrammetric Engineering & Remote Sensing, 62(1 ):67-
72.
Holm, M., Parmes, E., Vuorela, A., 1997. Implementation and
experiences of a nationwide automatic satellite image
registration system. SPIE, 2315:371-382.
Jensen, J.R., 1996. Introductory Digital Image Processing: A
Remote Sensing Perspective. 2 nd Edition, Prentice-Hall,
Englewood Cliffs, New Jersey.
Pala, V., Pons, X., 1995. Incorporation of Relief in Polynomial-
Based Geometric Corrections. Photogrammetric Engineering
& Remote Sensing, 61(7):935-944.
4. CONCLUSIONS
In 1998, extensive benchmark tests have been performed with
optical and microwave spacebome images (SPOT, IRS-1C,
LANDSAT, RADARSAT) and maps of different scales and
cartographic projections. Very good registration accuracy has
been demonstrated even with very large images (i.e., 20,000 x
20,000 pixels) and in mountainous areas.
In the first quarter of 1999, the software was installed in the
operational information system of the Satellite Centre (Madrid)
of the Western European Union, and is routinely used to
register images and maps for photo-interpretation and image
analysis tasks.
At ACRI, the software is also operationally used to match
numerical simulation results for air and water pollution with
aerial and satellite images and local maps.
ACKNOWLEDGEMENTS
Most of all we would like to thank the highly committed
WEUSC Exploitation and Research teams, who specified the
operational requirements and the user interface aspects, and
actively participated in software tests and demonstrations of its
usefulness for supporting operational photo-interpretation tasks.
REFERENCES
Crawford, P.S., Brooks, A.R., Brush, R.J.H., 1996. Fast
navigation of AVHRR images using complex orbital models.
Int J. Remote Sensing, 17(1): 197-212.
de Sève, D., Toutin, T., Desjardins, R., 1996. Evaluation de
deux méthodes de correction géométriques d’images Landsat et
ERS-1. Int. J. Remote Sensing, 17(1): 131-142.
El-Manadili, Y., Novak, K., 1996. Precision Rectification of
Spot Imagery using the Direct Linear Transformation Model.
