Watermarking medical images by reversible scheme and embedding in region of non-interest

Truong Hoang Vinh

3 (1) 2013

Watermarking medical images by reversible scheme and embedding in region of non-interest

Author - Affiliation:

Truong Hoang Vinh - Ho Chi Minh City Open University , Vietnam

Corresponding author: Truong Hoang Vinh - vinh.th@ou.edu.vn

Abstract

Medical images can be divided into two regions such as region of interest (ROI) and region of non-interest (RONI). We define ROI is the region that contains information of the patient’s state. Many watermarking schemes have been proposed since 2000 by reversible methods: lossless compression, histogram extension, spread-spectrum method. In this paper, we present a novel method for watermarking medical images. We use the RONI region of medical image as the region of embedding by geometric coding and insert the watermarking signal by the reversible watermarking scheme. We evaluate our method on MRI and CT medical images.

Keywords

ROI; RONI; reversible scheme; medical image; geometric coding transform

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