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Image-Based Query by Example Using MPEG-7 Visual Descriptors
Ventura Royo, Carles
Marqués Acosta, Fernando; Pont Tuset, Jordi
This project presents the design and implementation of a Content-Based Image Retrieval (CBIR) system where queries are formulated by visual examples through a graphical interface. Visual descriptors and similarity measures implemented in this work followed mainly those defined in the MPEG-7 standard although, when necessary, extensions are proposed. Despite the fact that this is an image-based system, all the proposed descriptors have been implemented for both image and region queries, allowing the future system upgrade to support region-based queries. This way, even a contour shape descriptor has been developed, which has no sense for the whole image. The system has been assessed on different benchmark databases; namely, MPEG-7 Common Color Dataset, and Corel Dataset. The evaluation has been performed for isolated descriptors as well as for combinations of them. The strategy studied in this work to gather the information obtained from the whole set of computed descriptors is weighting the rank list for each isolated descriptor.
Àrees temàtiques de la UPC::So, imatge i multimèdia::Creació multimèdia::Vídeo digital
Image processing -- Digital techniques
MPEG (Video coding standard)
Content-Based Image Retrieval
Imatges -- Processament -- Tècniques digitals
Estàndard MPEG
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/bachelorThesis
Escola Tècnica Superior de Telecomunicació de Barcelona
         

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