Full text: Proceedings; XXI International Congress for Photogrammetry and Remote Sensing (Part B1-1)

Introduction 
During the 2004-2008 period Technical Commission I of ISPRS « Imade Data Acquisition - Sensors 
and Platforms » has organised 14 workshops and its Symposium took place in Marne-la-Vallee 
(France) in July 2006. These events were already opportunities to present and discuss the state of 
the art and progresses of image acquisition techniques within the 8 working groups of the 
Commission. 
But the Congress of ISPRS, which takes place every four years, is for each of us interested in 
photogrammetry, remote sensing and spatial information sciences, a new major opportunity to meet 
more people and to present our work to a much wider community. 
For this Congress 300 abstracts related to the terms of reference of TC I have been accepted to be 
presented and all the available full papers are published in this volume of the ISPRS Archives. 
They reflect the very large variety of topics of the Commission, showing the progress accomplished 
during the past years and the innovations which could be very helpful in the future. Some of them 
could be mentionned: 
- More and more space imagery is available (a dozen of Earth Observation satellites have been 
launched since the past Congress in Istanbul) with better resolution. 
- New internet services have been developped and have stimulated the development of many 
applications. 
- The generation of DEMs from space has become fully operational. 
- The interest of using together different space systems combined with in-situ observations, will be 
effective with the implementation of the Global Earth Observation System of Systems (GEOSS) 
- The use of LiDAR systems is significantly increasing, due to major improvements allowing higher 
quality. 
- Digital aerial cameras are reaching nearly full maturity, providing the radiometric quality of 
remote sensing and the geometric accuracy of photogrammetry. 
- Ground based mobile mapping systems are developping very fast to acquire panoramic or 
stereo imagery and also laser clouds that can be used to enrich the content of 3D City models 
built from aerial and satellite imagery. 
I would like to thank all who have contributed to this work during this 4 year period and especially, 
the Secretary of the Commission, Nicolas Paparoditis, and the Working Group Chairs: Charles Toth, 
Vincent Tao, Jon Mills, Karsten Jacobsen, Ugar Murat Leloglu, Ron Li and Naser El-Sheimy. 
Alain Baudoin 
President of ISPRS Technical Commission I
	        
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