19 Result(s)
within
Stelios Andreadis
English
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Article
Open AccessFrom Research to Applications: What Can We Extract with Social Media Sensing?
With the constant growth of social media in our daily lives, a huge amount of information is generated online by multiple social networks. However, what can we actually extract with the science of social media...
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Article
Interactive video retrieval in the age of effective joint embedding deep models: lessons from the 11th VBS
This paper presents findings of the eleventh Video Browser Showdown competition, where sixteen teams competed in known-item and ad-hoc search tasks. Many of the teams utilized state-of-the-art video retrieval ...
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Chapter and Conference Paper
VERGE in VBS 2023
This paper describes VERGE, an interactive video retrieval system for browsing a collection of images from videos and searching for specific content. The system utilizes many retrieval techniques as well as fu...
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Chapter and Conference Paper
VERGE in VBS 2022
This paper presents VERGE, an interactive video search engine that integrates multiple retrieval methodologies and also combines them with reranking and fusion techniques. Moreover, a user interface, implement...
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Chapter and Conference Paper
Parallel DBSCAN-Martingale Estimation of the Number of Concepts for Automatic Satellite Image Clustering
The necessity of organising big streams of Earth Observation (EO) data induces the efficient clustering of image patches, deriving from satellite imagery, into groups. Since the different concepts of the satel...
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Chapter and Conference Paper
VERGE in VBS 2021
This paper presents VERGE, an interactive video search engine that supports efficient browsing and searching into a collection of images or videos. The framework involves a variety of retrieval approaches as w...
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Chapter and Conference Paper
Early and Late Fusion of Multiple Modalities in Sentinel Imagery and Social Media Retrieval
Discovering potential concepts and events by analyzing Earth Observation (EO) data may be supported by fusing other distributed data sources such as non-EO data, for instance, in-situ citizen observations from...
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Article
Semantic event fusion of computer vision and ambient sensor data for activity recognition to support dementia care
Although many Ambient Intelligence frameworks either address heterogeneous ambient sensing or computer vision techniques, very limited work integrates both techniques in the scope of activity recognition in pe...
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Chapter and Conference Paper
An Extensible Framework for Interactive Real-Time Visualizations of Large-Scale Heterogeneous Multimedia Information from Online Sources
This work presents the user-centered design and development of a generic and extensible visualization framework that can be re-used in various scenarios in order to communicate large–scale heterogeneous multim...
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Chapter and Conference Paper
VERGE in VBS 2020
This paper demonstrates VERGE, an interactive video retrieval engine for browsing a collection of images or videos and searching for specific content. The engine integrates a multitude of retrieval methodologi...
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Chapter and Conference Paper
VERGE in VBS 2019
This paper presents VERGE, an interactive video retrieval engine that enables browsing and searching into video content. The system implements various retrieval modalities, such as visual or textual search, co...
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Chapter and Conference Paper
VERGE in VBS 2018
This paper presents VERGE interactive video retrieval engine, which is capable of browsing and searching into video content. The system integrates several content-based analysis and retrieval modules including...
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Chapter and Conference Paper
VERGE in VBS 2017
This paper presents VERGE interactive video retrieval engine, which is capable of browsing and searching into video content. The system integrates several content-based analysis and retrieval modules includin...
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Chapter and Conference Paper
A Topic Detection and Visualisation System on Social Media Posts
Large amounts of social media posts are produced on a daily basis and monitoring all of them is a challenging task. In this direction we demonstrate a topic detection and visualisation tool in Twitter data, wh...
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Chapter and Conference Paper
The SemaDrift Protégé Plugin to Measure Semantic Drift in Ontologies: Lessons Learned
Semantic drift is an active research field, which aims to identify and measure changes in ontologies across time and versions. Yet, only few practical methods have emerged that are directly applicable to Sema...
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Chapter and Conference Paper
Dem@Home: Ambient Monitoring and Clinical Support for People Living with Dementia
Dem@Home is an Ambient Assisted Living framework to support intelligent dementia care, by integrating a variety of ambient and wearable sensors together with sophisticated, interdisciplinary methods, such as ...
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Chapter and Conference Paper
User-Driven Ontology Population from Linked Data Sources
In order for ontology-based applications to be deployed in real-life scenarios, significant volumes of data are required to populate the underlying models. Populating ontologies manually is a time-consuming an...
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Chapter and Conference Paper
Dem@Home: Ambient Intelligence for Clinical Support of People Living with Dementia
With the ever-growing prevalence of dementia, nursing costs are increasing, while the ability to live independently vanishes. Dem@Home is an ambient assisted living framework to support independent living whi...
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Article
DNA Hybridization Detection using Fluorescent Zinc Selenide Quantum Dots
This work focuses on the development of biological analysis tools using zinc selenide quantum dots (ZnSe QDs). Conjugating water-dispersible ZnSe QDs with oligonucleotides of increasing length was found to inc...
