Medical image watermarking with tamper detection and recovery.
This paper discussed security of medical images and reviewed some work done regarding them. A fragile watermarking scheme was then proposed that could detect tamper and subsequently recover the image. Our scheme required a secret key and a public chaotic mixing algorithm to embed and recover a tampered image. The scheme was also resilient to VQ attack. The purposes were to verify the integrity and authenticity of medical images. We used 800 x 600 x 8 bits ultrasound (US) greyscale images in our experiment. We tested our algorithm for up to 50% tampered block and obtained 100% recovery for spread-tampered block.
Zain
Jasni M
JM
Fac. of Comput. Syst. & Software Eng., Univ. Coll. of Eng. & Technol. Malaysia, Pahang, Malaysia. jasni@kuktem.edu.my
Fauzi
Abdul M
AM
D000465:Algorithms; D001698:Biomedical Engineering; D016494:Computer Security; D003952:Diagnostic Imaging / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D012637:Security Measures