Now showing items 1-9 of 9

  • A comparative study between compressed video watermarking methods based on DCT coefficients and intra prediction 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2011-09)
    Several watermarking methods have been applied to the newest video codec H.264/AVC to satisfy different applications such as authentication, tamper proof and copyright protection. Our objective through this paper is to present a comparative study between watermarking methods based on the quantized (Q) DCT coefficients ...
  • A comparative study between compressed video watermarking methods based on DCT coefficients and intra prediction 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Séminaire inter-laboratoires des doctorants en Informatique, (Constantine, Algerie, 2011-04-20)
    Several watermarking methods have been applied to the newest video codec H.264/AVC to satisfy different applications such as authentication, tamper proof and copyright protection. Our objective through this paper is to present a comparative study between watermarking methods based on the quantized (Q) DCT coefficients ...
  • Error Drift Compensation for Data Hiding of the H.264/AVC 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2013)
    The error propagation problem is one of the most attractive issues in the field of data hiding of compressed video because the achievement of several data hiding characteristics remains dependant on it. In this paper, a solution to compensate the error propagation is proposed for data hiding of the H.264/AVC. The error ...
  • Error Drift Compensation for Data Hiding of the H.264/AVC 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Journal of Control Engineering and Applied Informatics, (Romanian Society of Control Engineering and Technical Informatics, 2013)
    The error propagation problem is one of the most attractive issues in the field of data hiding of compressed video because the achievement of several data hiding characteristics remains dependant on it. In this paper, a solution to compensate the error propagation is proposed for data hiding of the H.264/AVC. The error ...
  • H.264/AVC Data Hiding Algorithm with a Limitation of the Drift Distortion 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : The International Conference on Signal Processing, (China, 2012-10-21)
    Many data hiding algorithms have been proposed for the latest video codec H.264/AVC, most of them are based on the 4x4 luma DCT coefficients. However, the drift distortion is the main reason which limits the embedding capacity in data hiding algorithms based on DCT coefficients. Few methods have been proposed to ...
  • H.264/AVC Data Hiding Algorithm with a Limitation of the Drift Distortion 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2012)
    Many data hiding algorithms have been proposed for the latest video codec H.264/AVC, most of them are based on the 4x4 luma DCT coefficients. However, the drift distortion is the main reason which limits the embedding capacity in data hiding algorithms based on DCT coefficients. Few methods have been proposed to compensate ...
  • H.264/AVC data hiding based on Intra prediction modes for real time applications 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2012)
    A compromise is usually made between the different constraints of video data hiding methods, which seems more difficult to achieve for real time applications. In this paper, a new data hiding approach is presented for the video codec H.264/AVC. This method uses the intra prediction modes for the 4x4 luminance blocks. The ...
  • H.264/AVC Data Hiding Based on Intra Prediction Modes for Real-time Applications 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : The World Congress on Engineering and Computer Science, (USA, 2012-10-24)
    The existing data hiding methods for the newest video codec H.264/AVC exploit its several modules such as the discrete cosine transform coefficients or the prediction modes. In this paper, a new data hiding approach is presented by exploiting the intra prediction modes for the 4x4 luminance blocks. The objective is ...
  • Increase of embedding capacity of the H.264/AVC data hiding based on the intra-prediction modes 

    Bouchama, Samira; Hamami, Latifa; Aliane, Hassina
    In : Rapports de recherche internes, (CERIST, Alger, 2011-09)
    Data hiding methods applied to the newest video codec H.264/AVC are exploiting several modules of this codec such as the discrete cosine transform (DCT) coefficients and the intra prediction modes. The objective is to realize a good compromise between the embedding capacity, the increase in bitrate and the video quality, ...

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