A blind watermarking technique using redundant wavelet transform for copyright protection

• Published in: 2018 IEEE 14th International Colloquium on Signal Processing & Its Applications (CSPA) pp. 221 - 226
• Main Authors: Ernawan, Ferda, Kabir, Muhammad Nomani
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.03.2018
• Subjects: blind watermarking technique; Copyright protection; Entropy; Image coding; Low pass filters; modified entropy; redundant wavelet transform; Robustness; Transform coding; watermark extraction; watermark insertion; Watermarking
• DOI: 10.1109/CSPA.2018.8368716

A digital watermarking technique is an alternative method to protect the intellectual property of digital images. This paper presents a hybrid blind watermarking technique formulated by combining RDWT with SVD considering a trade-off between imperceptibility and robustness. Watermark embedding locations are determined using a modified entropy of the host image. Watermark embedding is employed by examining the orthogonal matrix U obtained from the hybrid scheme RDWT-SVD. In the proposed scheme, the watermark image in binary format is scrambled by Arnold chaotic map to provide extra security. Our scheme is tested under different types of signal processing and geometrical attacks. The test results demonstrate that the proposed scheme provides higher robustness and less distortion than other existing schemes in withstanding JPEG2000 compression, cropping, scaling and other noises.