Preface:

In 1989 the time was hot to create a workshop series dedicated to the dicussion of the latest results in the automatic processing of fringe patterns. This idea was promoted by the insight that automatic and high precision phase measurement techniques will play a key role in all future industrial applications of optical metrology. However, such a workshop must take place in a dynamic environment. Therefore the main topics of the previous events were always adapted to the most interesting subjects of the new period. In 1993 new principles of optical shape measurement, setup calibration, phase unwrapping and nondestructive testing were the focus of discussion, while in 1997 new approaches in multi-sensor metrology, active measurement strategies and hybrid processing technologies played a central role. 2001, the first meeting in the 21st century, was dedicated to optical methods for micromeasurements, hybrid measurement technologies and new sensor solutions for industrial inspection. The fifth workshop takes place in Stuttgart, the capital of the state of Baden-Württemberg and the centre of a region with a long and remarkable tradition in engineering. Thus after Berlin 1989, Bremen 1993, 1997 and 2001, Stuttgart is the third Fringe city where international experts will meet each other to share new ideas and concepts in optical metrology.

This volume contains the papers presented during FRINGE 2005. The focus of this meeting was especially directed to resolution enhanced technologies, new approaches in wide scale 4D optical metrology and advanced computer aided measurement techniques. Since optical metrology becomes more and more important for industrial inspection, sophisticated sensor systems and their applications for the solution of challenging measurement problems are chosen again as one of the central topics of the workshop. This extended scope was honored again by a great response on our call for papers. Scientists from all around the world offered more than 110 papers. This enormous response demanded a strong revision of the papers to select the best out of the overwhelming number of excellent papers. This hard job had to be done by the program committee since there is a strong limitation of the number of papers which can be presented and discussed during our workshop without holding parallel sessions.

The papers presented in this workshop are summarized under 5 topics:

1. New Methods and Tools for Data Processing
2. Resolution Enhanced Technologies
3. Wide Scale 4D Optical Metrology
4. 4. Hybrid Measurement Technologies
5. 5. New Optical Sensors and Measurement Systems

Each session is introduced by an acknowledged expert who gives an extensive overview of the topic and a report of the state of the art. The classification of all submitted papers into these topics was again a difficult job which often required compromises. We hope that our decisions will be accepted by the audience. On this occasion we would like to express our deep thanks to the international program committee for helping us to find a good solution in every situation.

The editor would like to express his thanks to all the authors who spent a lot of time and effort in the preparation of their papers. Our appreciation also goes to Dr. Eva Hestermann-Beyerle and Monika Lempe from Springer Heidelberg for providing excellent conditions for the publication of these proceedings. My deep thanks is directed to the members of the ITO staff. The continuous help given by Gabriele Grosshans, Ruth Edelmann, Christa Wolf, Reinhard Berger, Witold Gorski, Ulrich Droste, Jochen Kauffmann and Erich Steinbeißer was the basis for making a successful FRINGE 2005. Finally, special thanks and appreciation goes to my co-chair, Werner Jüptner, for sharing with me the spirit of the 5 th Fringe workshop.

Looking forward to FRINGE 2009.

        Stuttgart, September 2005

        Wolfgang Osten

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