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This paper describes the mental stress assessment using Electrocardiography (ECG) signal. Stress reflects the changes in heart rates under stressful situation. In this work, Heart Rate Variability (HRV) from ECG signal is used to study the activity of Autonomic Nervous System (ANS) under stress states. The Stroop colour word test is used to induce stress(More)
In recent years, Electrocardiogram (ECG) plays an imperative role in heart disease diagnostics, Human Computer Interface (HCI), stress and emotional states assessment, etc. In general, ECG signals affected by noises such as baseline wandering, power line interference, electromagnetic interference, and high frequency noises during data acquisition. In order(More)
Assessing human stress in real-time is more difficult and challenging today. The present review deals about the measurement of stress in laboratory environment using different stress inducement stimuli by the help of physiological signals. Previous researchers have been used different stress inducement stimuli such as stroop colour word test (CWT), mental(More)
The increase in the use of mobile phones generates the formation of mobile social networks which can make use of various purposes including education, public health and controlling epidemics. Social networks consist of the basic building blocks called as the communities within which the social interactions are intensive, but between which they are very(More)
This paper proposes an effective image denoising of gray level images in wavelet transform domain using joint bilateral filter and modified adaptive shrinkage. The input image is first decomposed using 2D-discrete wavelet transform. The multiresolution joint bilateral filtering is then applied to the approximation sub-band of the decomposed image. Flat and(More)