Embedding metadata in computer graphics for interaction [Elektronische Ressource] / von Henry Sonnet

Embedding Metadata in Computer Graphics for InteractionDissertationzur Erlangung des akademischen GradesDoktoringenieur (Dr.-Ing.)angenommen durch die Fakultat¨ fur¨ Informatikder Otto-von-Guericke-Universit¨at MagdeburgvonDipl.-Ing. Henry Sonnetgeboren am 28.10.1975 in MagdeburgGutachterinnen/Gutachter:Prof. Dr. Thomas StrothotteProf. Dr. Heidrun SchumannProf. Dr. Jana DittmannOrt und Datum des Promotionskolloquiums:Magdeburg, 25. April 2007AbstractDigital media such as 2D images or 3D visualizations often need to be augmented withinformation that assists the viewer in understanding what is portrayed or that providesadditional knowledge which is in relation to the medium’s content. The data representa-tion of such descriptive metadata is a challenging task since digital media can be stored invarious forms each of which provides, if at all, its own specific method for integrating itsassigned metadata. Those methods are analyzed and classified in this research, and theapproach of employing digital watermarking which has emerged as an applicable techniquefor storing descriptive metadata is discussed. In this regard, several Illustration Water-marking techniques are proposed, an end-user tool which was implemented is introduced,andtheresultsofevaluatingaselectionofthosewatermarkingtechniquesduringanexper-imental study are presented.