Optimized digital library for digital forensic based on decomposed PRNU

Yue Li, Chang Tsun Li

    Research output: Book chapter/Published conference paperConference paperpeer-review

    1 Citation (Scopus)

    Abstract

    Nowadays, the digital forensic techniques for digital images are developed with the origin identification and integrity verification functions for security reasons. Methods based on photo-response-non-uniform (PRNU) are widely studied and proved to be effective to serve the forensic purposes. However, due to the interpolation noise, caused by the colour filtering and interpolation function the accuracy of the PRNU-based forensic method has been degraded. Meanwhile, the tremendous physical storage requirement and computation consumption limit the applications of PRNU-based method. Therefore, an innovative DPRNU-based forensic method has been proposed in order to solve the above problems. In the method, the artificial component and physical component are separated according to the colour filtering array (CFA) and the PRNU are only extracted from the physical component in order to remove the interference caused by the interpolation noise, which increases the accuracy of the camera identification and integrity verification. Meanwhile, due to the separation, the DPRNU are only 1/3 of the size of the traditional PRNU, which saves considerable physical storage in setting up the digital library and fasters the comparison speed between the fingerprints.
    Original languageEnglish
    Title of host publication2011 International Conference on Multimedia Technology, ICMT 2011
    Place of PublicationNew Jersey
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Pages610-613
    Number of pages4
    ISBN (Print)9781612847740
    DOIs
    Publication statusPublished - 2011
    Event2nd International Conference on Multimedia Technology, ICMT 2011 - Hangzhou, China, Hangzhou, China
    Duration: 26 Jul 201128 Jul 2011

    Conference

    Conference2nd International Conference on Multimedia Technology, ICMT 2011
    Country/TerritoryChina
    CityHangzhou
    Period26/07/1128/07/11

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