Browsing Conference papers by Title

Now showing items 20-39 of 40

  • img(Anaktisi): A Web Content Based Image Retrieval System 

    Zagoris, Konstantinos; Chatzichristofis, Savvas A. (IEEE, 2009)
    img(Anaktisi) is a C#/.NET content base image retrieval application suitable for the web. It provides efficient retrieval services for various image databases using as a query a sample image, an image sketched by the ...

  • Img(Rummager): An Interactive Content Based Image Retrieval System 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis; Lux, Mathias (IEEE (Institute of Electrical and Electronics Engineers , United States), 2009)
    This paper presents an image retrieval suite called img(Rummager) which brings into effect a number of new as well as state of the art descriptors. The application can execute an image search based on a query image, either ...

  • Inter-Mobility Support in Controlled 6LoWPAN Networks 

    Zinonos, Zinon; Vassiliou, Vasos (IEEE, 2011)
    The research and industrial community started to think of more complex application scenarios for wireless sensor networks, where the use of mobile sensor nodes is essential. The support of mobile sensor nodes in such ...

  • Late fusion of compact composite descriptors for retrieval from heterogeneous image databases 

    Chatzichristofis, Savvas A.; Arampatzis, Avi (Association for Computing Machinery (ACM), United States, 2010)
    Compact composite descriptors (CCDs) are global image features, capturing more than one types of information at the same time in a very compact representation. Their quality has so far been evaluated in retrieval from ...

  • LIRe: Lucene Image Retrieval - An Extensible Java CBIR Library 

    Lux, Mathias; Chatzichristofis, Savvas A. (Association for Computing Machinery (ACM), United States, 2008)
    LIRe (Lucene Image Retrieval) is a light weight open source Java library for content based image retrieval. It provides common and state of the art global image features and offers means for indexing and retrieval. Due ...

  • Localized Global Descriptors for Image Retrieval: An Extensive Evaluation on Adaptations to the Simple Model 

    Anagnostopoulos, Nektarios; Iakovidou, Chrysanthi; Chatzichristofis, Savvas A.; Boutalis, Yiannis; Lux, Mathias (IEEE (Computer Society), 2016)
    SIMPLE (Searching Images with MPEG-7 (& MPEG-7-like) Powered Localized dEscriptors) is a model that proposes the reuse of well-established global descriptors by localizing their description mechanism on image patches located ...

  • Mobility in WSNs for Critical Applications 

    Silva, Ricardo; Zinonos, Zinon; Sá Silva, Jorge; Vassiliou, Vasos (IEEE, 2011)
    Recent critical application sectors of sensor networks like military, health care, and industry require the use of mobile sensor nodes, something that poses unique challenges in aspects like handoff delay, packet loss, and ...

  • Multimedia Search with Noisy Modalities: Fusion and Multistage Retrieval 

    Arampatzis, Avi; Chatzichristofis, Savvas A.; Zagoris, Konstantinos (ImageClef, Wikipedia Retrieval Task, 2010)
    We report our experiences from participating to the controlled experiment of the ImageCLEF 2010 Wikipedia Retrieval task. We built an experimental search engine which combines multilingual and multi-image search, employing ...

  • The NOPTILUS project overview: A fully-autonomous navigation system of teams of AUVs for static/dynamic underwater map construction 

    Kapoutsis, A. Ch.; Salavasidis, G. V.; Chatzichristofis, Savvas A.; Braga, J.; Pinto, J.; Borges de Sousa, Joao; Kosmatopoulos, E. B. (IFAC (International Federation of Automatic Control), 2015)
    Within the project NOPTILUS, a fully functional system/methodology had been developed that allows the cooperative, fully-autonomous navigation of teams of AUVs when deployed in Static or Dynamic Underwater Map Construction ...

  • Performance Study of the Most Commonly Used Image Retrieval Evaluation Methods 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis (ACTA PRESS, 2010)
    One of the most significant problems in the field of image retrieval results from the lack of a common test bed for the evaluation of the systems. So far, many of the methods used in the field of information retrieval ...

  • Quantifying integration quality using feedback on mapping results 

    Serrano, Fernando R. S.; Fernandes, Alvaro A. A.; Christodoulou, Klitos (iiWAS2017, 2017)
    Traditional data integration delivers high integration quality but requires significant upfront effort because of the need for expensive experts to be involved. The pay-as-you-go approach to data integration aims to reduce ...

  • Searching Images with MPEG-7 (& MPEG-7-like) Powered Localized dEscriptors: The SIMPLE answer to effective Content Based Image Retrieval 

    Iakovidou, Chrysanthi; Anagnostopoulos, Nektarios; Kapoutsis, Athanasios Ch.; Boutalis, Yiannis (IEEE (Computer Society), 2014)
    In this paper we propose and evaluate a new technique that localizes the description ability of the well established MPEG-7 and MPEG-7-like global descriptors. We employ the SURF detector to define salient image patches ...

  • Selection of the Proper Compact Composite Descriptor for Improving Content based Image Retrieval 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis; Lux, Mathias (ACTA Press, Canada, 2009)
    Compact Composite Descriptors (CCD) are global image features capturing both, color and texture characteristics, at the same time in a very compact representation. In this paper we propose a combination of two recently ...

  • SFly: Swarm of Micro Flying Robots 

    Achtelik, Markus; Achtelik, Michael; Brunet, Yorick; Chli, Margarita; Chatzichristofis, Savvas A. (IEEE (Computer Society), 2012)
    The SFly project is an EU-funded project, with the goal to create a swarm of autonomous vision controlled micro aerial vehicles. The mission in mind is that a swarm of MAV’s autonomously maps out an unknown environmen ...

  • SPCD - SPATIAL COLOR DISTRIBUTION DESCRIPTOR - A Fuzzy Rule based Compact Composite Descriptor Appropriate for Hand Drawn Color Sketches Retrieval 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis; Lux, Mathias (SCITEPRESS, 2010)
    In this paper, a new low level feature suitable for Hand Drawn Color Sketches retrieval is presented. The proposed feature structure combines color and spatial color distribution information. The combination of these two ...

  • The TREC files: the (ground) truth is out there 

    Chatzichristofis, Savvas A.; Zagoris, Konstantinos; Arampatzis, Avi (Association for Computing Machinery (ACM), United States, 2011)
    Traditional tools for information retrieval (IR) evaluation, such as TREC’s trec_eval, have outdated command-line interfaces with many unused features, or ‘switches’, accumulated over the years. They are usually seen ...

  • Two-Staged Image Colorization Based on Salient Contours 

    Anagnostopoulos, Nektarios; Iakovidou, Chrysanthi; Amanatiadis, A.; Boutalis, Yiannis; Chatzichristofis, Savvas A. (IEEE (Computer Society), 2014)
    In this paper we present a novel colorization technique that manages to significantly reduce color bleeding artifacts caused by weak object boundaries and also requires only abstract color indications and placement from ...

  • Video Summarization Using a Self-Growing and Self-Organized Neural Gas Network 

    Papadopoulos, Dim. P.; Papamarkos, Nikos (Springer, 2011)
    In this paper, a novel method to generate video summaries is proposed, which is allocated mainly for being applied to on-line videos. The novelty of this approach lies in the fact that the video summarization problem is ...

  • WSN Evaluation in Industrial Environments First results and lessons learned 

    Poettner, W.; Wolf, L.; Cecílio, José; Furtado, Pedro; Mendão Silva, Ricardo; Sá Silva, Jorge; Cardoso, Alberto; Brown, J.; Sreenan, C.; Klein, A.; Roedig, U.; Vassiliou, Vasos; Voigt, T.; Donovan, T. O.; He, Z.; Zinonos, Zinon; Carrilho de Sousa Gil, Paulo José (IEEE, 2011)
    The GINSENG project develops performance-controlled wireless sensor networks that can be used for time-critical applications in hostile environments such as industrial plant automation and control. GINSENG aims at integrating ...

  • www.MMRetrieval.net: a multimodal search engine 

    Zagoris, Konstantinos; Chatzichristofis, Savvas A.; Arampatzis, Avi (Association for Computing Machinery (ACM), United States, 2010)
    We introduce an experimental search engine for multilin- gual and multimedia information, employing a holistic web interface and enabling the use of highly distributed indices. Modalities are searched in parallel, and ...