Adaptive visible image watermarking based on Hadamard transform

[摘要] One of the ways for implicit protection of rightful copyright information deals with application of visible watermark embedded in the host image. In this paper, we study behaviour of the proposed function, which makes the embedding of visible watermark smoother compared to the well-known sigmoid function, linear function, and Zernike moments. The Hadamard transform allows us to reduce the computational resources for watermarking processes. The proposed technique is especially useful in fragile watermarking as the additional level for protection.

[发布机构] Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarsky Rabochy ave., Krasnoyarsk; 660037, Russia^1

[效力级别] 工业技术

[关键词] Computational resources;Copyright informations;Fragile watermarking;Host images;Linear functions;Sigmoid function;Zernike moments