Improve My City Mobile available on Github under A-GPL

ImproveMyCityMobile is an open source smartphone application for Android devices that allows citizens to report all types of issues related to their neighborhood. It is now available on Github

Multimedia Group @ ICIP 2013

Three papers from the Multimedia Group of the Information Technologies Institute will be presented in the 2013 IEEE International Conference on Image Processing (ICIP 2013), which will be held in Melbourne, Australia on September 15-18, 2013. ICIP, sponsored by the IEEE Signal Processing Society, is among the top international conferences in theoretical, experimental, and applied image and video processing. The papers are:

Sense the City

Sense the City is an application that allows citizens to get real time information regarding the environmental conditions in their city. This information is retrieved from several sensors that "sense" the city providing environmental measurements, such as temperature and concentration of pollutants (e.g. CO, CO2, NO2) that affect the air quality.

Best Paper Honorable Mention at MMM2013, Huangshan, China

The paper "Semi-supervised concept detection by learning the structure of similarity graphs" by Symeon Papadopoulos, Christos Sagonas, Yiannis Kompatsiaris and Athena Vakali won a Best Paper Honorable Mention in the International Conference in Multimedia Modeling that took place in Huangshan, China between 7 and 9 January 2013. The paper was selected out of 96 papers, 43 oral presentations and 53 poster papers that were accepted by the conference (27% acceptance rate for oral, 44% overall acceptance rate).

Improve My City Mobile - Android version

The mobile application enables citizens to report local problems such as potholes, illegal trash dumping, faulty street lights, broken tiles on sidewalks, and illegal advertising boards. The submitted issues are displayed on the city's map. Users may add photos and comments. Moreover, they can suggest solutions for improving the environment of their neighbourhood.

Audio and Video recordings in the Greek Association of Alzheimer's Disease and Related Disorders

Within the framework of Dem@Care and in co-operation with IBM, CERTH and the Greek Association of Alzheimer's Disease and Related Disorders, audio and video recordings have been performed in Thessaloniki with participants from the Greek Association of Alzheimer's Disease and Related Disorders.

The participants were elderly people at the early stage of dementia, with mild cognitive impairment (MCI) and healthy people with similar age range and demographic attributes.

CERTH participation in the Social Event Detection task @ MediaEval 2012


Social Event Detection dataset made available for researchers


CERTH has successfully contributed to the organization of this year's Social Event Detection task (SED 2012) that took place in Pisa 4-5 October, in the context of MediaEval 2012. The SED 2012 dataset has been made publicly available for download and use by the research community. You can freely download the dataset from . The downloadable archives include the following: