Ovidiu Csillik

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PhD thesis topic: Efficient image segmentation techniques for remote sensing data

Ovidiu Csillik is a fully funded PhD student at the Doctoral College "GIScience" at the University of Salzburg. He is doing his research under the supervision of Dr. Stefan Lang.

Currently, he is working on topics related to Object-based image analysis (OBIA). OBIA is devoted to developing automated methods to partition remote sensing imagery into meaningful image objects and assessing their characteristics through spatial, spectral and temporal scales, thus generating new geographic information in a GIS-ready format. The most important part of OBIA, image segmentation, is still an unresolved problem because it is sensible to many factors and has to deal with the complexity of remote sensing data. This PhD project aims at bridging the gap between remote sensing and computer vision towards creating a robust image segmentation methodology for remote sensing data. Therefore, a few steps are required, from understanding the spatial structure of the image, to methods to improve the computational time and accuracy of segmentation and to create a hybrid segmentation algorithm for remote sensing data by combining elements from remote sensing and computer vision techniques. The outcomes of this research will have a significant potential to enable robustness and automation of OBIA applications.