• PDF / 239,250 Bytes
• 6 Pages / 439.37 x 666.142 pts Page_size
• 41 Downloads / 284 Views

DOWNLOAD

REPORT

---

Abstract Security is one of the major aspects of medical imagery. Various methods have been evolved which ensure the integrity and confidentiality of medical images stored as electronic patient record (EPR). In this paper, digital watermarking is proposed as a method to enhance medical data security. Watermarking also ensures that the image presented for insurance claims and before law is the authentic image. The proposed scheme is a software-dependent watermarking technique. The software used for watermarking can only reconstruct the image. Keywords Medical image security


Digital watermarking
EPR

Introduction This chapter deals with the security aspect of digital imaging and communications in medicine (DICOM) images, using digital watermarking techniques. Although these techniques could be applied to any image, they are a must in case of medical images. Similarly, digital watermarking techniques are not limited to images but could also be applied on audio as well as video media. Medical images include all scan images like CT scans, Ultrasounds, MRIs, etc. In today’s environment medical images are parts of electronic patient record (EPR) and are not only stored S. Bhalerao (&)
M. Mehta Department of Digital Communication, Gyan Ganga College of Technology, Jabalpur, India e-mail: [email protected] N. Dubey CTA, Gyan Ganga College of Technology, Jabalpur, India M. Bhatele Department of Computer Science, Gyan Ganga College of Technology, Jabalpur, India

V. Kumar and M. Bhatele (eds.), Proceedings of All India Seminar on Biomedical Engineering 2012 (AISOBE 2012), Lecture Notes in Bioengineering, DOI: 10.1007/978-81-322-0970-6_13, Ó Springer India 2013

111

112

S. Bhalerao et al.

in computers, but also transferred across networks and with advent of cloud computing sometimes stored on network clouds. In such a scenario, there is a chance of images getting distorted on the way. Even stored images can be distorted due to activities of hackers and malicious software like malwares and viruses. The distortion may not severely affect the image, but will make its user skeptic toward originality of image. Therefore, the distorted images are of no use to medical professionals and also cannot be used as a proof in legal matters before the law. The digital watermarking techniques discussed here would reinstantiate the originality of images after transmission over a network or if the images are stored for very long. Reference [1] provides a detailed description of medical security. Classification of different watermarking techniques is provided first and then we cover the details of the watermarking method that we have used.

Classification Digitally watermarked images can be classified on various grounds depending on the different aspects of watermarking. One classification is made on the robustness of watermarking; a watermark is said to be fragile if it gets changed, if any change is made to image. On the other hand, a watermark is said to be robust if it can survive attacks like compression, cropping, etc. A