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Chaos-Based 2D Visual Encryption Mechanism for ECG Medical Signals (pp.209-222) $0.00
Authors:  (Chin-Feng Lin, Department of Electrical Engineering, National Taiwan Ocean University, Taiwan, ROC)
Encryption is a necessary mechanism for secure data storage and transmission. Chaosbased
encryption is an important encryption mechanism that is used for audio, image, video,
electroencephalograms (EEG), and electrocardiographs (ECG) multimedia signals. Chaos
sequences are popular because they increase unpredictability more than other types of random
sequences. We have developed a two-dimensional (2D) chaos-based encryption scheme that
can be applied to signals with transmission bit errors in clinical electroencephalography
(ECG) and mobile telemedicine. We used a 2D chaotic scrambler and a 2D permutation
scheme to achieve ECG visual encryption. The visual encryption mechanism was realized by
first scrambling the input ECG signal values, then multiplying a chaotic 2D address scanning
order encryption to randomize reference values. Simulation results show that when the correct
deciphering parameters are entered, ECG signal with a transmission bit error rate of 7 10 are
completely recovered; furthermore, the percent root-mean-square difference values for clinical
ECG signals is 0.2496%. However, when there is an input parameter error, for example, an
initial point error of 0.00000001%, these clinical ECG signals become unrecoverable. The
proposed chaos-based 2D encryption is well suited for applications to clinical ECG signals. 

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Chaos-Based 2D Visual Encryption Mechanism for ECG Medical Signals (pp.209-222)