An Image Watermarking Framework based on Saliency and Phase Congruency using LSB Matching Technique
Manas Ranjan Nayak, Ajaya Kumar Parida, Parthasarathi Pattnayak, Asif Uddin Khan · 2021
The outcomes from Perceptual watermarking attain full benefits of Human Visual System (HVS). Saliency and Phase Congruency (PC) use these benefits by categorizing various perceptual regions of an image. Saliency gives the low perceptual region of an image where Phase Congruency identifies the corner points of an image. Hiding information at this low perceptual region of an image gives better imperceptibility. In this proposed method, bit depth images are generated from Saliency and Phase Congruency which are used to create hiding capacity map for inserting watermark data. Low perceptually visible pixels of Hiding Capacity Map are used for better hiding locations. Watermark information are inserted into the cover image by the help of a LSB matching technique where insertion and extraction are carried out using pair of pixels. The experimental result ensures better Imperceptibility and Robustness with superior data hiding Capacity.