Ferdinand Deger defended his thesis

Ferdinand Deger defended his thesis 27 June 2016 at Faculty of Computer Science and Media Technology. The thesis is titled “Contributions to spectral and 3D imaging technology for cultural heritage applications”.

State-of-the-art optical imaging systems allow new possibilities for the acquisition, analysis, and visualisation of tangible cultural heritage objects. The optical acquisitions do not harm the objects and constitute a precise and persistent description of valuable and indeed fragile cultural heritage artefacts.

The optical documentation of cultural heritage objects generally focuses on two main traits: an accurate colour acquisition and 3D structure recording of the surface. Deger addresses both aspects in his doctoral thesis.

All optical acquisitions are inevitably corrupted by noise. To further improve the quality of the records, mathematical models for hyperspectral denoising are investigated. A main contribution of this work is the development of a new hyperspectral denoising framework.

As a complete application of accurate spectral recordings allow data analysis and visualisation applications in cultural heritage research, such analyses were applied to Edvard Munch's famous masterpiece, the 1893 version of The Scream.

3D information is another important characteristic in cultural heritage documentation, and Deger investigated prehistoric stone engravings with a colour-corrected, structured light scanner, used as a foundation for a contact-less examination.

Deger carried out his work at the Faculty of Computer Science and Media Technology, NTNU in Gjøvik in cooperation with Université de Bourgogne, Faculty of Mathematics and Natural Sciences, École Doctorale SPIM - Sciences Pour l’Ingénieuret Microtechniques, by agreement on joint supervision and doctoral education (cotutelle agreement).

His supervisors were Professor Jon Yngve Hardeberg, NTNU in Gjøvik, Professor Yvon Voisin, Université de Bourgogne, France, Associate Professor Marius Pedersen, NTNU in Gjøvik, and Professor Alamin Mansouri, Université de Bourogogne, France.

Assessment committee:

  • First External opponent: Professor Robert Sitnik, Warsaw University of Technology, Poland
  • Second External opponent: Professor Olivier Colot, Université Lille 1, France
  • Internal opponent and administrator of the committee’s work:  Professor Philip Green, Faculty of Computer Science and Media Technology, NTNU Gjøvik.

 Head of Section Terje Stafseng, IMT, NTNU Gjøvik, conducted the public defense.


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