caa a22 4500 605447829 CHVBK 20210128100134.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11042-014-1890-9 doi (NATIONALLICENCE)springer-10.1007/s11042-014-1890-9 A new fast and efficient active steganalysis based on combined geometrical blind source separation [Elektronische Daten] [Hamed Modaghegh, Seyed Seyedin] We have presented a new active steganalysis method in order to break the block-discrete cosine transform (DCT) coefficients steganography. Our method is based on a combination of the Blind Source Separation (BSS) technique and Maximum A posteriori (MAP) estimator. We have additionally introduced a new geometrical BSS method based on the minimum range of mixed sources which reduces the computational cost of the proposed steganalysis. The high efficiency of this new combined method has been confirmed by enough experiments. These experiments show that, compared to the previous active steganalysis methods our active steganalysis method not only reduces the error rate but also causes a low computational cost. Springer Science+Business Media New York, 2014 Blind Source Separation (BSS) nationallicence Active steganalysis nationallicence MAP estimator nationallicence Independent Component Analysis (ICA) nationallicence Block-DCT steganography nationallicence Modaghegh Hamed Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran aut Seyedin Seyed Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/15(2015-08-01), 5825-5843 1380-7501 74:15<5825 2015 74 11042 https://doi.org/10.1007/s11042-014-1890-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-014-1890-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Modaghegh Hamed Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran aut NATIONALLICENCE 700 1- Seyedin Seyed Department of Electrical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/15(2015-08-01), 5825-5843 1380-7501 74:15<5825 2015 74 11042