Now showing items 1-8 of 8

  • Calidad de Imagen de los Archivos JPEG 

    Serra Picañol, Joan (Universitat Politècnica de Catalunya, 2012)
    Bachelor thesis
    Restricted access - confidentiality agreement
  • CBIR - Content based information retrieval in Optical Biopsies 

    Tous Liesa, Rubén; Ferrer-Roca, Olga; Delgado Mercè, Jaime (2010)
    Conference report
    Restricted access - publisher's policy
    The present paper describes the design and usage of an Internet medical image search engine based on the queryby-example paradigm and the multimedia standard ISO-15938-12:2008. The system, which allows combining Content ...
  • Differential entropy of digital pictures 

    Grifell Guàrdia, Laia (Universitat Politècnica de Catalunya, 2015-07)
    Bachelor thesis
    Open Access
    En el treball s'estudia la compressió JPEG i la seva possible utilitat com a clau en criptografia. Es fa mitjançant comparant les compressions JPEG d'imatges en RAW molt semblants.
  • Embedding images in partially encrypted JPEG images 

    Sole Cubilo, Guillem (Universitat Politècnica de Catalunya, 2016-05-26)
    Bachelor thesis
    24 months embargo
    This thesis presents an algorithm and implementation to embed images into partially encrypted JPEG images by combining the information of both images. These partially encrypted JPEG images have been encrypted using the ...
  • JPSearch: new international standard providing interoperable framework for image search and sharing 

    Yoon, Kyoungro; Kim, Youngseop; Park, Je-Ho; Delgado Mercè, Jaime; Yamada, Akio; Dufaux, Frederic; Tous Liesa, Rubén (2012-08)
    Article
    Restricted access - publisher's policy
    For the last 15 years, there have been various research and great advances in the field of content-based search and retrieval of images. In this paper, we present an overview of the JPSearch Standard, which is a recently ...
  • Privacidad en imágenes jpg mediante XACML 

    Durán Montoro, Alberto (Universitat Politècnica de Catalunya, 2016-01-19)
    Bachelor thesis
    Open Access
    Este trabajo propone una solución a la pérdida de privacidad de las imágenes JPEG mediante la inclusión de políticas de privacidad. Posteriormente se genera una petición de acceso a la imagen y un autorizador determina si ...
  • Query formats for multimedia applications ISO/IEC 15938-12 (MPEG Query Format) & ISO/IEC 24800 (JPSearch) 

    Tous Liesa, Rubén (2009)
    Conference report
    Restricted access - publisher's policy
    Digital images are being generated, distributed and stored worldwide at an ever increasing rate. This is increasing the urgency of solving and standardizing solutions for challenging questions surrounding image repositories. ...
  • Towards standardized integration of images in the cloud of linked data 

    Tous Liesa, Rubén; Delgado Mercè, Jaime; Temmermans, Frederik; Jansen, Bart; Schelkens, Peter (Springer, 2013)
    Conference report
    Restricted access - publisher's policy
    Currently, there are several ways of describing and referring to images in RDF. This ambiguity results in a proliferation of vocabularies for image descriptions, complicating the cross-community data integration of information ...