Hybrid digital fingerprint based on multi-type characters for collusion-resistance

Zuxi Wang; Wenzong Wang; Hanping Hu; Jing Xu

doi:10.1117/12.902693

8 December 2011 Hybrid digital fingerprint based on multi-type characters for collusion-resistance

Zuxi Wang, Wenzong Wang, Hanping Hu, Jing Xu

Proceedings Volume 8002, MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis; 80021O (2011) https://doi.org/10.1117/12.902693
Event: Seventh International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2011), 2011, Guilin, China

Abstract

Collusion tolerance is an essential requirement for digital fingerprinting, and existing collusion-resistant encoding and tracking methods are generally based on combinatorics. However, those methods have some deficiencies such as low tracking efficiency and large fingerprint database for matching. Owing to those weaknesses, a hybrid fingerprint encoding method based on residual characters is proposed in this paper. The fingerprint is generated by encoding the user information into a binary image composed of letter, numeral and Chinese character. As a result of the complex structure of Chinese character, more residue characters can be reserved when the fingerprint is damaged. Thus, the fingerprint has a good performance in anti-tampering. Meanwhile, it has the capacity for large users because of the diversity of Chinese character. In addition, the paper proposes a tracking method based on grid feature, which greatly reduces the computational complexity and improves the tracking efficiency. The robustness and collusion tolerance of the digital fingerprinting scheme are confirmed by theoretical analysis and experimental results.

Citation Download Citation

Zuxi Wang, Wenzong Wang, Hanping Hu, and Jing Xu "Hybrid digital fingerprint based on multi-type characters for collusion-resistance", Proc. SPIE 8002, MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis, 80021O (8 December 2011); https://doi.org/10.1117/12.902693

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KEYWORDS

Feature extraction

Computer programming

Digital filtering

Discrete wavelet transforms

Tolerancing

Binary data

Databases

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