A Novel Zero-Watermarking Based Scheme for Copyright Protection of Grayscale Images
Journal Title: Mehran University Research Journal of Engineering and Technology - Year 2019, Vol 38, Issue 3
Abstract
Zero-watermarking of digital images is a powerful method with respect to transparency in the watermarked image. However, robustness is still a challenging characteristic for researchers. The proposed method of zero-watermarking provides a novel solution for increasing robustness by obtaining resident features of grayscale image that are robust against common signal processing operations. The proposed solution is based on image scanning to produce NDD (NeighboringDistance Difference) profile. This scheme is used to extract image features for generating redundancy binary profile with the help of image scanning and identification of robust image areas for embedding a binary watermark. Redundant areas from binary profile show perceptually insignificant regions of grayscale image according to human visual system. Resident features from robust areas of image are collected to generate the zerowatermarking binary key image using reversible XOR operation. The binary key is used for extraction of binary watermark. Experimental results of the proposed method have been compared with the results of various zero-watermarking schemes as well as traditional watermarking methods and found much better at slightly higher computational cost. The comparison analysis for testing robustness has been carried out against image processing attacks like Gaussian filtering, block average filtering, motion blur filtering, image resizing, image rotation, image compression and cropping. For each attack maximum correlated watermark from the set of recovered watermarks is selected to evaluate the performance of proposed zero-watermarking scheme. It has been recorded that perfect matching is observed between original and extracted watermarks for a number of signal processing attacks.
Authors and Affiliations
M. F. Khan, S. M. G. Monir, I. Naseem
Keywords
Related Articles
- EP ID EP616470
- DOI 10.22581/muet1982.1903.09
- Views 141
- Downloads 0
High Gain DC-DC Converter with Enhanced Adaptive MPPT for PV Applications
The increasing demand for electricity has pushed more effort to focus on renewable energy sources to satisfy the consumer. The renewable energy sources are playing a major role in the generation of electricity. Out of al...
Displacement Based Design Optimization of Steel Moment Frames
Optimization of steel moment resisting frames considering the displacement as the fundamental element is the main aim of the present study. DDBD (Direct Displacement Based Design) methodology have been used for the subje...
Analysis of Wind Energy Potential and Optimum Wind Blade Design for Jamshoro Wind Corridor
Pakistan is facing energy crisis since last decade. This crisis can be effectively handled by utilizing alternative energy resources. Pakistan has a huge wind energy potential of about 50,000MW. The contribution of costa...
Modified Hybrid Grey Model (1,1) to Forecast Cellular Subscribers
This study develops MHGM (1,1) (Modified Hybrid Grey Model) which is the combination of two models first one is improved GM (1,1), this model consists of optimization of initial and background values and other is concave...
Efficient Advanced Encryption Standard for Securing Cognitive Radio Networks
During the last decade, the CR (Cognitive Radio) came into view as a major wireless technology to resolve the issue of spectrum secrecy and efficient spectrum utilization. However, due to unlicensed (secondary) users, th...