Title :
Medical image authentication based on fragile watermarking using hamming code
Author :
Abadi, Mohammad Arabzadeh Mohammad ; Danyali, Habibollah ; Dehnavi, Mazaher Nosoohi
Author_Institution :
Dept. of Electr. & Electron. Eng., Shiraz Univ. of Technol., Shiraz, Iran
Abstract :
In this paper we propose a novel fragile watermarking scheme that uses very little bit budget to detect tamper in medical images, based on hamming codes. Unlike other papers that used hamming codes in a robust watermarking context, we use this code to detect errors in received watermarked image. The host image is decomposed into blocks and verification is performed block-wise in a way that we can easily localize tampers. A pair of keys is used for security reasons and watermark bits are placed into the blocks in accordance with these keys. Experimental results show that this method can reach near perfect verification while having very high PSNR and thus making very little changes to the host image that is of crucial importance in medical images.
Keywords :
Hamming codes; biomedical MRI; image watermarking; medical image processing; security of data; Hamming code; block-wise verification; fragile watermarking scheme; host image decomposition; medical image authentication; medical image tampering detection; watermark bits; Algorithm design and analysis; Authentication; Medical diagnostic imaging; PSNR; Pixel; Watermarking; Fragile Watermarking; Hamming Codes; Image Authentication; Medical Images; Tamper Detection; component;
Conference_Titel :
Biomedical Engineering (ICBME), 2010 17th Iranian Conference of
Conference_Location :
Isfahan
Print_ISBN :
978-1-4244-7483-7
DOI :
10.1109/ICBME.2010.5704947