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Umamageswari, A.
- Performance Analysis of Secure Medical Image Communication with Digital Signature and Reversible Watermarking
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Authors
Affiliations
1 Department of Computer Science and Engineering, Sathyabama University, IN
2 Department of Electronics and Communication Engineering, Easwari Engineering College, IN
1 Department of Computer Science and Engineering, Sathyabama University, IN
2 Department of Electronics and Communication Engineering, Easwari Engineering College, IN
Source
ICTACT Journal on Image and Video Processing, Vol 4, No 1 (2013), Pagination: 647-651Abstract
Protection of Medical image contents becomes the important issue in computer network security. Digital Watermarking has becomes a promising technique for medical content authentication, it allows to embed relevant information with the image, which provides confidentiality, integrity and authentication by embedding Digital Signature (DS) with the Medical image. In this paper we focus on need for reversible watermarking, Medical Image Compression and security related problems in medical images, it comparing the performances of various lossless watermarking techniques for various medical image modalities like MRI (Magnetic Resonance Imaging), US (Ultrasonic), CT (Computed Tomography), Endoscopic and Angiographic images. Region of Interest (ROI) supporting lossless watermarking systems only considered for discussions. Performance of all lossless watermarking with Digital Signature is analyzed by means of four parameters Capacity Rate, PSNR (Peak Signal to Noise ratio), NPCR (Number of Pixel Change Rate) and Compression Ratio (CR). This Paper also introduces new mechanism for open network security for medical images. This lossless watermarking is responsible for recovering the altered medical image content of the system.Keywords
Reversible Watermarking, Medical Image Compression, Digital Signature, Medical Image Security, ROI, Kerberos.
- Enhancing Security in Medical Image Informatics using Geometrical Attacks
Abstract Views :335 |
PDF Views:107
Authors
Affiliations
1 DMI College of Engineering, Chennai 600 123, IN
1 DMI College of Engineering, Chennai 600 123, IN
Source
Current Science, Vol 117, No 3 (2019), Pagination: 412-421Abstract
The objective of this study is to provide security to medical images by embedding medical data (electronic patient record; EPR) along with the images to reduce the bandwidth during communication. Reversible watermarking and digital signature, will provide high security. This application is mainly used in telesurgery. Only the authorized medical experts can explore a patient’s image because of the use of the authentication Kerberos. The proposed study is mainly to restrict unauthorized access to patients’ data. Hence medical image authentication may be achieved without biometric recognition such as finger prints, eye stamps, etc. Since the EPR itself contains a patient’s entire history, after the extraction process medical experts can identify the patient and also the disease information. In future we can embed the EPR inside the medical image after encryption to enhance security. To improve the authentication, medical expert biometric information can be embedded inside the image in the future. Experiments were conducted using more than 500 (512 × 512) image archives in various modalities from the National Institutes of Health, USA, and Aycan sample digital images downloaded from the internet. Almost all images with greater than 15,000 bits showed 60.4–78.9 dB PSNR value with less alteration in the restored image because of compression, not of watermarking, and the average (number of pixels change rate) was 98.9%.Keywords
Reversible Watermarking, Digital Signature, Medical Image Compression, Security Enhancement.Full Text
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