1st International ICST Conference on Communications and Networking in China

Research Article

Modified Quantization Index Modulation Watermarking Adaptive to Contrast Masking Thresholds

  • @INPROCEEDINGS{10.1109/CHINACOM.2006.344752,
        author={Guoxi  Wang and  Lihong  Ma and Kang  Cai and Hanqing  Lu},
        title={Modified Quantization Index Modulation Watermarking Adaptive to Contrast Masking Thresholds},
        proceedings={1st International ICST Conference on Communications and Networking in China},
        publisher={IEEE},
        proceedings_a={CHINACOM},
        year={2007},
        month={4},
        keywords={},
        doi={10.1109/CHINACOM.2006.344752}
    }
    
  • Guoxi Wang
    Lihong Ma
    Kang Cai
    Hanqing Lu
    Year: 2007
    Modified Quantization Index Modulation Watermarking Adaptive to Contrast Masking Thresholds
    CHINACOM
    IEEE
    DOI: 10.1109/CHINACOM.2006.344752
Guoxi Wang1, Lihong Ma1, Kang Cai1,2, Hanqing Lu3,4
  • 1: GD key Lab of Computer Network, Dept.of Electronic Engineering , South China Univ. of Tech. Guangzhou, China.
  • 2: Guangdong Telecom
  • 3: National Lab of Pattern Recognition Inst. Automation, China Academy of Science,
  • 4: Beijing, China.

Abstract

In this paper, we suggest an adaptive watermarking method to improve both transparence and robustness of quantization index modulation (QIM) scheme. Instead of a fixed quantization step size, we apply a step size adapted to image content in each 8times8 block to make a balance of the robustness extraction and the transparence of embedding. The modified steps are determined by the contrast masking thresholds of Watson's perceptual model. From normalized cross correlation between the original watermark and the detected watermark, we observe that it is robust to attacks of additive white Gaussian noise, salt & pepper noise, JPEG compression than the original QIM.