Big Data Collections (e.g. Earth Observation data, social media streams, large video collections, etc.) are characterised by large volumes, velocity and variety, due to their high heterogeneous nature and timeliness. Multimedia retrieval requires efficient indexing of the available raw data and extracted metadata, such as concepts, visual features, textual features and mutually semantically linked multimodal objects. The multimodal character of Big Multimedia Data requires an effective combination of multiple modalities for similarity search and retrieval using compound queries. Our research focuses on the design and development of domain-specific and focused search engines with novel user interfaces, taking into account the AI-based extracted and indexed metadata per multimedia object.
Border Security
PROJECTS
PUBLICATIONS
- G. Orfanidis, K. Ioannidis, S. Vrochidis and I. Kompatsiaris, “Tweaking EfficientDet for frugal training. In Proccedings International Conference on Multimedia Retrieval 2023 (ICMR 2023), Thessaloniki, Greece, 12 - 15 June 2023 OPEN ACCESS
- G. Orfanidis, K. Ioannidis, A. Tefas, S. Vrochidis, Y. Kompatsiaris, "A modified Single-Shot multibox Detector for beyond Real-Time Object Detection", 25th International Conference on Pattern Recognition, (ICPR 2020), 10 & 15 January 2021, Milan, Italy.
- M. Riga, E. Kontopoulos, K. Ioannidis, S. Kintzios, S. Vrochidis, I. Kompatsiaris (2020). “EUCISE-OWL: An Ontology-based Representation of the Common Information Sharing Environment (CISE) for the Maritime Domain” Semantic Web, vol. 12, no. 4, pp. 603-615, 2021. OPEN ACCESS
- G. Orfanidis, S. Apostolidis, G. Prountzos, M. Riga, A. Kapoutsis, K. Ioannidis, E. Kosmatopoulos, S. Vrochidis, I. Kompatsiaris, "Border surveillance using computer vision enabled robotic swarms for semantically enriched situational awareness", in Mediterranean Security Event 2019 (MSE2019) 29th and the 31st of October 2019 Heraklion, Greece. OPEN ACCESS
- G. Orfanidis, S. Apostolidis, A. Kapoutsis, K. Ioannidis, E. Kosmatopoulos, S. Vrochidis, & I. Kompatsiaris , "Autonomous swarm of heterogeneous robots for surveillance operations", in Workshop on Vision-enabled UAV and counter-UAV technologies for surveillance and security of critical infrastructures (UAV4S), Thessaloniki, Greece, 2019. OPEN ACCESS
- M. Krestenitis, G. Orfanidis, K. Ioannidis, K. Avgerinakis, S. Vrochidis and I. Kompatsiaris. "Oil Spill Identification from Satellite Images Using Deep Neural Networks". Remote Sensing, 11(15), 1762, 26 July 2019. OPEN ACCESS