Björn Gottfried

Shape from Positional-Contrast (eBook, PDF)

Characterising Sketches with Qualitative Line Arrangements

• Format: PDF

Produktbeschreibung

Graphical queries for the purpose of searching for pictorial information are of growing interest in areas where pictures provide valuable information, including, for instance, design, architecture, and engineering. Sketching graphical queries is a natural way of revealing the visual appearance of objects one has in mind. Björn Gottfried develops computationally effective concepts for dealing with shape, in particular imprecise and incomplete sketched shapes. He exemplarily applies his method using graphical queries to search for historical objects. Specifying objects graphically, he shows that the new method is in fact capable of dealing with imprecise sketches. Generally speaking, the notion of positional-contrast is introduced. It defines how patterns can be robustly dealt with. That is, the new representation distinguishes patterns by how they relate with regard to spatial relations. This notion can be applied for several purposes, including pattern recognition, motion analysis, and texture analysis.

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Produktdetails

• Verlag: Deutscher Universitätsverlag
• Seitenzahl: 214
• Erscheinungstermin: 10. Oktober 2007
• Englisch
• ISBN-13: 9783835091634
• Artikelnr.: 37400364

Autorenporträt

Björn Gottfried hat in Hamburg und Bremen Informatik studiert, arbeitet seit 1999 am Technologie-Zentrum Informatik an der Bremer Universität, hat im Jahre 2005 promoviert und bietet Lehrveranstaltungen zur Bildverarbeitung, zum Bildverstehen und zum Diagrammatischen Schließen an.

Inhaltsangabe

Sketches.- The imprecision of sketches.- Theory.- Qualitative line arrangements.- Characterising polygons qualitatively.- Evaluation.- Applying qualitative line arrangements.- Positional-contrast.