Medical Image Authentication based on Fragile Watermarking using Hamming Code
Publish place: 17th Iranian Conference on Biomedical Engineering
Publish Year: 1389
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICBME17_075
تاریخ نمایه سازی: 9 تیر 1392
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.
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Authors
Mohammad Ali Arabzadeh
Department of Electrical and Electronic Engineering Shiraz University of Technology Shiraz, Iran
Mohammad Abadi
Department of Electrical and Electronic Engineering Shiraz University of Technology Shiraz, Iran
Habibollah Danyal
Department of Electrical and Electronic Engineering Shiraz University of Technology Shiraz, Iran
Mazaher Nosoohi Dehnavi
Department of Electrical and Computer Engineering Yazd University Yazd, Iran