Cover Image

A study of watermarking methods in medical application

Nowadays, watermarking technology is playing an important role in medical image watermarking as it can hide the patient information and then get back the information by the owner itself using certain private key. The objective of this project is to address the specific requirements needs for w...

Full description

Saved in:
Bibliographic Details
Main Author: Ng, Lee Ping
Format: Thesis
Language:English
Published: 2004
Subjects:
QA Mathematics
QA71-90 Instruments and machines
Online Access:http://eprints.uthm.edu.my/8165/1/24p%20NG%20LEE%20PING.pdf
http://eprints.uthm.edu.my/8165/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.uthm.eprints.8165
record_format eprints
spelling my.uthm.eprints.81652023-02-07T03:25:40Z http://eprints.uthm.edu.my/8165/ A study of watermarking methods in medical application Ng, Lee Ping QA Mathematics QA71-90 Instruments and machines Nowadays, watermarking technology is playing an important role in medical image watermarking as it can hide the patient information and then get back the information by the owner itself using certain private key. The objective of this project is to address the specific requirements needs for watermarking of medical images and compare three appropriate schemes for watermarking of medical images. Four important requirements in medical image watermarking are imperceptible watermarking, integrity control, authentication and capacity hiding. The three methods of medical image watermarking that have been studied are Least Significant Bit (LSB), Rivest, Shamir and Adleman (RSA) encryption and decryption with LSB, RSA encryption and decryption with feature-based. These three methods of image watermarking are categorized in spatial domain. Performance for watermarking scheme is carried out and comparisons are made. There are three quality metrics used in this project which are Peak-to-Noise Ratio (PSNR), Mean Square Error (MSE) and Signal-to-Noise Ratio (SNR). Among these three methods, LSB method has the most capacity of watermark and fastest rate in embedding process. These three algorithms implemented in this project are shown to be sensitive for the attack. Attacks applied in this project are salt & pepper noise with 0.0001 noise density, median filtering, JPEG compression with index 100 and index 75, cropping and rotation. These three methods that being studied are better for integrity control. Meanwhile, a Graphic User Interface (GUI) is developed for embedding and extracting purpose. User can embed a watermark into their host image and extract the watermark from the watermarked image. 2004-06 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/8165/1/24p%20NG%20LEE%20PING.pdf Ng, Lee Ping (2004) A study of watermarking methods in medical application. Masters thesis, Universiti Sains Malaysia.
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic QA Mathematics
QA71-90 Instruments and machines
spellingShingle QA Mathematics
QA71-90 Instruments and machines
Ng, Lee Ping
A study of watermarking methods in medical application
description Nowadays, watermarking technology is playing an important role in medical image watermarking as it can hide the patient information and then get back the information by the owner itself using certain private key. The objective of this project is to address the specific requirements needs for watermarking of medical images and compare three appropriate schemes for watermarking of medical images. Four important requirements in medical image watermarking are imperceptible watermarking, integrity control, authentication and capacity hiding. The three methods of medical image watermarking that have been studied are Least Significant Bit (LSB), Rivest, Shamir and Adleman (RSA) encryption and decryption with LSB, RSA encryption and decryption with feature-based. These three methods of image watermarking are categorized in spatial domain. Performance for watermarking scheme is carried out and comparisons are made. There are three quality metrics used in this project which are Peak-to-Noise Ratio (PSNR), Mean Square Error (MSE) and Signal-to-Noise Ratio (SNR). Among these three methods, LSB method has the most capacity of watermark and fastest rate in embedding process. These three algorithms implemented in this project are shown to be sensitive for the attack. Attacks applied in this project are salt & pepper noise with 0.0001 noise density, median filtering, JPEG compression with index 100 and index 75, cropping and rotation. These three methods that being studied are better for integrity control. Meanwhile, a Graphic User Interface (GUI) is developed for embedding and extracting purpose. User can embed a watermark into their host image and extract the watermark from the watermarked image.
format Thesis
author Ng, Lee Ping
author_facet Ng, Lee Ping
author_sort Ng, Lee Ping
title A study of watermarking methods in medical application
title_short A study of watermarking methods in medical application
title_full A study of watermarking methods in medical application
title_fullStr A study of watermarking methods in medical application
title_full_unstemmed A study of watermarking methods in medical application
title_sort study of watermarking methods in medical application
publishDate 2004
url http://eprints.uthm.edu.my/8165/1/24p%20NG%20LEE%20PING.pdf
http://eprints.uthm.edu.my/8165/
_version_ 1758580250185302016
score 13.211869

Similar Items