Abstract:
Images frequently are helpless to burglary and copyright encroachment. There are
numerous events where pictures were illegally copied from websites for utilization or
monetary profit and were gotten away from equity, prompting misfortunes for the battled
proprietors or innovators. Techniques for securing and recognizing digital pictures and
their owners from adversaries are thus required. In this paper, a watermarking procedure
in hybrid domain is proposed for copyright assurance of images. The strategy inserts
watermarks in Non-Subsampled Contourlet Transform (NSCT) and Redundant Discrete
Wavelet Transform (RDWT) areas to accomplish better invisibility, and robustness. The
blind extraction of watermark can be performed associating the arbitrarily produced PN
arrangements. The experimental results demonstrate that the combination of NSCT –
RDWT improves the nature of watermarked image when tried on standard and medical
images. The experimental results indicated that the proposed scheme provides good
imperceptibility and robustness against various kind of watermarking attacks. The main
strength of proposed scheme is that it provides good imperceptibility for watermarked
images up to 58 dB along with good robustness for watermark image up to 0.99 against
various types of attacks and equally works for various kind of images such as greyscale
and medical images. Further, the performance of proposed scheme indicated that the
quality of generated watermarked medical image has fulfilled all parameters and benefits
for secure telemedicine applications
