DIGITAL WATERMARKING IN MEDICAL IMAGES

• Main Author: Jasni Mohamad Zain Prof. Dr
• Format: Book
• Language: English
• Published: Kuantan, Pahang Universiti Malaysia Pahang 2014
• Series: majlis syarahan umum profesor
• Subjects: Computer security; Digital watermarking; Imaging systems in medicine
• Online Access: Click Here to View Status and Holdings.
• Physical Description: v, 102 pages illustrations 23 cm
• Bibliography: Includes bibliographical references (pages 89-100) and index
• ISBN: 9789670691015

This book has demonstrated that watermarking can provide authentication for medical images. Three fragile watermarking schemes SAW, SAW-JPEG and AW-TDR have been discussed. These techniqueshave extended beyond previous technology in fragile watermarking by providing a high capacity, reversible authentication service for medical images. SAW-JPEG demonstrates a technique to embed information in the LSB (Least Significant Bits) that can survive JPEG quantization process while AW-TDRs able to validate the source of the image, verify its integrity and when the integrity verification fails, determine the altered image regions. AW-TDR has overcome security problems associated with previous independent block-based authentication watermarks, while retaining their tamper localisation properties. Its algorithm has been shown to provide security againts vector-quantization (collage) counterfeiting attacks and accurate localisation of altered image regions