Dimitrios Kosmopoulos

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In this paper, a method for the detection and classification of defects in weld radiographs is presented. The method has been applied for detecting and discriminating discontinuities in the weld images that may correspond to false alarms or defects such as worm holes, porosity, linear slag inclusion, gas pores, lack of fusion or crack. A set of 43(More)
In this paper, we present our approach towards developing visual competencies for socially assistive robots within the framework of the HOBBIT project. We show how we integrated several vision modules using a layered architectural scheme. Our goal is to endow the mobile robot with visual perception capabilities so that it can interact with the users. We(More)
In this work, we provide a discriminative framework for online simultaneous segmentation and classification of visual actions, which deals effectively with unknown sequences that may interrupt the known sequential patterns. To this end we employ Hough transform to vote in a 3D space for the begin point, the end point and the label of the segmented part of(More)
In this paper, we propose a discriminative framework for online simultaneous segmentation and classification of modeled visual actions that can be performed in the context of other unknown actions. To this end, we employ Hough transform to vote in a 3D space for the begin point, the end point, and the label of the segmented part of the input stream. A(More)
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