Arnold's Cat Map is an image-stretching transformation in which an image made up of n by n pixels is stretched and then wrapped around to restore the picture's original dimensions.
Published in Chapter:
Biosignal and Image Processing in Telemedicine
Vasanth Raj P. T. (Chennai Institute of Technology, India), Archana N. (Chennai Institute of Technology, India), Sudhakar J. (Chennai Institute of Technology, India), Vijayaraj A. (Vignan's Foundation for Science, Technology, and Research (Deemed), India), and Uma Haimavathi K. (Chennai Institute of Technology, India)
Copyright: © 2022
|Pages: 22
DOI: 10.4018/978-1-6684-5231-8.ch008
Abstract
Bio-signals are signals that are recorded from the human body which can be electrical (e.g., ECG), electroencephalogram (EEG), electromyogram (EMG), and so on. Analyzation can be carried out by storing these signals, which will be helpful for monitoring. For example, when a physician wants to know about the regularity of heart sound, they use stethoscope through which heart's sound can be acquired. Medical snaps generated through various imaging modalities have high resolution which increases storage capacity and requires extra bandwidth for transmission. An attacker who corrupts or modifies a medical picture during its transport over an open access network might cause variations in diagnosis. To transmit the image securely from trespassers, the image has to be encrypted. This helps us to transmit photographs in a compressed and secured manner.