Adrian Popescu

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ImageCLEF’s Flickr Photo Annotation and Retrieval task aims to advance the state of the art in multimedia research by providing a challenging benchmark for visual concept detection, annotation and retrieval in the context of a diverse collection of Flickr photos. The benchmark consisted of two separate but closely connected subtasks, where the objective of(More)
This paper provides an overview of the Retrieving Diverse Social Images task that is organized as part of the MediaEval 2015 Benchmarking Initiative for Multimedia Evaluation. The task addresses the problem of result diversification and user annotation credibility estimation in the context of social photo retrieval. We present the task challenges, the(More)
Geolocalized databases are becoming necessary in a wide variety of application domains. Thus far, the creation of such databases has been a costly, manual process. This drawback has stimulated interest in automating their construction, for example, by mining geographical information from the Web. Here we present and evaluate a new automated technique for(More)
This paper provides an overview of the Retrieving Diverse Social Images task that is organized as part of the MediaEval 2014 Benchmarking Initiative for Multimedia Evaluation. The task addresses the problem of result diversification in the context of social photo retrieval. We present the task challenges, the proposed data set and ground truth, the required(More)
ImageCLEF’s Wikipedia Image Retrieval task provides a testbed for the system-oriented evaluation of multimedia and multilingual information retrieval from a collection of Wikipedia images. The aim is to investigate retrieval approaches in the context of a large and heterogeneous collection of images (similar to those encountered on the Web) that are(More)
Statistical analysis of high-resolution traffic measurements from a wide range of working packet networks (e.g., Ethernet LANs, WANs, CCSN/SS7, ISDN and VBR video over ATM) have convincingly shown the presence of fractal or self-similar properties in both local area and wide area traffic traces [2, 3, 5, 15, 19]. That means that similar statistical patterns(More)
ImageCLEF’s Wikipedia Retrieval task provides a testbed for the system-oriented evaluation of multimedia information retrieval from a collection of Wikipedia images. The aim is to investigate retrieval approaches in the context of a large and heterogeneous collection of images (similar to those encountered on the Web) that are searched for by users with(More)
A concept emerging from recent studies on obstacle avoidance in quadrupeds is that working memory of the height of an obstacle established by visual information is enhanced by motor interactions with the obstacle. In this investigation, we found that this concept is valid in adult humans when viewing and walking up stairs. The main finding was that the(More)