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Pseudophacik Retinal Detachment is a subgroup of Rhegmatogenous Retinal Retachments with some unique characteristics, such as the number and location of retinal breaks, certain intraoperative technical difficulties and possibly an increased risk of proliferative vitreoretinopathy. Recent evidence has established the role of pars plana vitrectomy as a primary method of managing these cases. The role...
Current work focuses on user modeling in terms of affective analysis that could in turn be used in intelligent personalized interfaces and systems, dynamic profiling and context-aware multimedia applications. The analysis performed within this work comprises of statistical processing and classification of automatically extracted gestural and head pose expressivity features. Computational formulation...
In this work, we propose a design for a user attention model featuring three core components. Our system components can work in real-time, offering indications of user attention from different sensory inputs (both visual and neurophysiological). The intention of the current work is to keep the equipment as unintrusive as possible, while keeping the confidence of the inputs as high as possible. We...
In this work, we present a system that estimates a user's focus of attention in front of a computer screen, using a Web camera, based on detection and tracking of the user's head position and eye movements. Utilizing machine learning concepts, the system gives real time feedback on the user's attention, by combining information coming from eye gaze, head pose, and distance from the screen. The system...
When users of computer systems are given the opportunity to provide feedback on their preferences or interests in most cases they are presented with a questionnaire to be filled. However, this means of interaction requires an additional cognitive step, since the user is required to rationalize feelings and attitudes by answering predetermined questions; as a result, users often skip this part or answer...
A novel method for eye detection and eye center localization, based on geometrical information is described in this paper. First, a face detector is applied to detect the facial region, and the edge map of this region is extracted. A vector pointing to the closest edge pixel is then assigned to every pixel. Length and slope information for these vectors is used to detect the eyes. For eye center localization,...
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