Abstract
Firstly, Original image was divided into blocks and their entropy and standard deviation were calculated. According to HVS characteristics, selected some blocks with larger entropy and smaller standard deviation to embed watermark. Selected blocks are transformed into DCT domain and then operating SVD. The binary watermark image was embedded into the S component of those SVD decomposition after encrypted by chaotic encryption. Due to the watermark was embedded three times, the amount of embedded information is increased. Watermark obtained by selecting best one from three watermarks extracted from watermarked image. The experiment results show the algorithm has good invisibility and robustness to JPEG compression, image add noise, median filtering, cropping and other image processing operations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
