Georgios Stavropoulos

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— This paper presents a novel framework for gait recognition augmented with soft biometric information. Geometric gait analysis is based on Radon transforms and on gait energy images. User height and stride length information is extracted and utilized in a probabilistic framework for the detection of soft biometric features of substantial discrimination(More)
This paper presents a novel framework for the automatic recognition of Activities of Daily Living (ADLs), such as cooking, eating , dishwashing and watching TV, based on depth video processing and Hidden Conditional Random Fields (HCRFs). Depth video is provided by low-cost RGB-D sensors unobtrusively installed in the house. The user's location, posture, as(More)
Virtual User Models (VUMs) can be a valuable tool for accessibility and ergonomic evaluation of designs in simulation environments. As increasing the accessibility of a design is usually translated into additional costs and increased development time, the need for specifying the percentage of population for which the design will be accessible is crucial.(More)
In this paper, we present a novel methodology to evaluate the accessibility of products using virtual prototypes. The novelty is that the product evaluation is based on simulating the interactions of users with physical deficiencies in virtual and immersive environments. Virtual users with special needs, e.g. elderly or impaired people, were modelled using(More)
A 66-year-old woman underwent successful radiofrequency catheter ablation for long-lasting, drug refractory fast atrial flutter. Two days later she had a cardiac arrest due to torsades de pointes (TdP) tachycardia attributed to relative sinus bradycardia and QT interval prolongation. After successful resuscitation further episodes of TdP occurred, which(More)