-3- 
PREFACE 
Scanning instruments, recording hundreds or even 
thousands of 3D points per second, have added a new 
perspective to metric surveying. Besides topographic 
laser scanners operating from airplanes, various instru 
ments are available for close range applications. 
Although all of those instruments produce 3D coordinates 
in real time, they rely on different principles. Ranging 
instruments can be explained as high speed surveying 
instruments whereas triangulation type instruments, 
including one or two digital cameras, could be regarded 
as photogrammetric devices. From a user’s point of view, 
a discussion whether scanners belong to geodesy or 
photogrammetry is of no relevance, however. 
So far, scanners were widely used for the as-built-docu- 
mentation in industry. The rapid measurement of huge 
numbers of 3D points on object surfaces is also very 
suitable for the documentation of cultural heritage 
objects, such as buildings, ruins, sculptures and artifacts. 
The CIPA Symposium in September 2001 at Potsdam, 
Germany, showed that scanner producers are interested to 
enter this market and some users have already gained 
first experiences with this new metric recording 
technique. Preservation authorities in several countries 
have asked for guidelines concerning the use of scanning 
techno-logy, especially in comparison with close range 
photogrammetry. 
This was the motivation for CIPA Working Group 6, 
"Surveying Methods for Heritage Recorders", to offer 
this two day workshop "Scanning for Cultural Heritage 
Recording - Complementing or Replacing Photogram 
metry" immediately prior to the ISPRS Commission V 
Symposium at Corfu, Greece. The great response from 
authors and participants confirms the acute interest in this 
subject. The papers in this volume prove that in many 
cases both, scanning and photogrammetry can be used 
advantageously within one documentation project. Which 
method should be used to what extent under given pre 
requisites cannot be answered definitely yet. May the 
presentations and the discussions of this workshop lead to 
a clearer view of this question, thus serving the 
documentation of our cultural heritage. 
I would like to express my deepest gratitude to Petros 
Patias, President of ISPRS Commission V, from the 
Aristotle University of Thessaloniki, Greece, and his 
team who took over all the organizing tasks for this 
workshop from the announcement in the WEB to the 
printing of the proceedings. This made it easy for myself 
and my assistant, Mirko Siebold, to organize the scientific 
program and to edit this volume at the Institute for Spatial 
Information and Surveying Technology (i3mainz) at FH 
Mainz, University of Applied Sciences, Germany. 
I sincerely hope that all participants will appreciate the 
program, have the opportunity to meet old and new 
friends and find some time to enjoy beautiful Corfu 
Island. 
Welcome to the Workshop! 
Prof. Dr. Wolfgang Boehler 
Chairman CIPA WG 6