A New Rotation Resistant Image Watermarking Based on Logo Band

CHEN Qing, ZHOU Guang-zhou, WANG Fei, XIA Jian-feng

Packaging Engineering ›› 2016 ›› Issue (17) : 192-195.

Packaging Engineering ›› 2016 ›› Issue (17) : 192-195.

A New Rotation Resistant Image Watermarking Based on Logo Band

  • CHEN Qing, ZHOU Guang-zhou, WANG Fei, XIA Jian-feng
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Abstract

The work aims to propose a new rotation resistant image watermarking based on logo brand. First carrier images were embedded into rotary logo band and watermarking logo band. The rotary logo band was used to measure the rotation angle, and the watermarking logo band was used to search the watermarking embedded region. The width of the logo band was more than 10 to prevent the changed airspace coefficient caused by the rotation from affecting the detection logo position and angle. The logo band width was 12 in this algorithm. Then the three level wavelet decomposition of carrier image was carried out to ensure concentration of energy and reduce the influence on the watermark extraction. Finally, by the average of adjacent pixels of the image, watermarking information was embedded into low-frequency sub-band after three level wavelet decomposition. When the rotation attack was at 0°~45°or 90°~135°, NC value decreased with the increase of angle; at 45°~90°or 135°~180°, NC value increased with the increase of angle; After being attacked at 45°or 135°, the watermark couldn't be extracted. After translation attack and conventional signal processing attack, NC value was greater than 0.8. In conclusion, experimental results show that the proposed watermarking algorithm is robust to rotation attacks and translation, as well as common signal processing attacks.

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CHEN Qing, ZHOU Guang-zhou, WANG Fei, XIA Jian-feng. A New Rotation Resistant Image Watermarking Based on Logo Band[J]. Packaging Engineering. 2016(17): 192-195

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