THE USAGE OF 3-BIT QUANTIZATION METHOD FOR SELECTIVE IMAGE AUTHENTICATION ALGORITHM ROBUST TO JPEG COMPRESSION
Abstract
The advantage of watermarking usage is it does not require to store of metadata in extra memory space. However, JPEG algorithm, being a common method for image compression, leads to break-in of strict image authentication. An improved algorithm of selective image authentication tolerant to JPEG compression is presented. Proposed method is based on central finite differences and 3-bit quantization of the feature vector. The experimental results show that algorithm has strong resistance to JPEG compression with quality factor Q ≥ 8, the high probability of malicious tampering detection and low order of calculation complexity comparing with the previous presented. A visual quality (PSNR) of the watermarked image is higher than 40 dB.
About the Authors
A. Zhuvikin
Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича
Russian Federation
Russian Federation
V. Korzhik
Санкт-Петербургский государственный университет телекоммуникаций им. проф. М.А. Бонч-Бруевича
Russian Federation
Russian Federation
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Review
For citations:
Zhuvikin A., Korzhik V. THE USAGE OF 3-BIT QUANTIZATION METHOD FOR SELECTIVE IMAGE AUTHENTICATION ALGORITHM ROBUST TO JPEG COMPRESSION. Proceedings of Telecommunication Universities. 2016;2(1):52-57. (In Russ.)
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