Vandana Roy

Work place: Department of Electronics & Communication, GGITS, Jabalpur, M.P., 482005, INDIA



Research Interests: Image Processing, Processing Unit


Vandana Roy received B.E. degree in Electronics and communication Engg. from HCET, Jabalpur in 2001 and the M. Tech. degree in Digital Communication from Rajiv Gandhi Technical University, Bhopal in 2010 . She is currently Professor in GGITS Jabalpur in Electronic Engg.. Her research interest are Communication, Image processing and Digital Signal Processing. She has published more than 14 Research papers in International/National Journals and conferences.

Author Articles
Artifacts Removal of EEG Signals By the Application of ICA and Double Density DWT Algorithm

By Vandana Roy Shailja Shukla

DOI:, Pub. Date: 26 Aug. 2014

Independent Component Analysis is used for the automation and detection of brain artifacts. The Independent Component Analysis (ICA) here is used for the segmentation of artifact peaks in the signal. Then the Discrete Wavelet Transform is applied for multi-level transfer of signal data until the reception of significant result. We have extended our search and applied the Double Density Algorithm for the multi-level transfer. The results obtained were analyzed from the data set of EEG signals taken with a outsource reference. Since the method is parameter free implementations in clinical settings are imaginable.

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Automatic Removal of Artifacts from EEG Signal based on Spatially Constrained ICA using Daubechies Wavelet

By Vandana Roy Shailja Shukla

DOI:, Pub. Date: 8 Jul. 2014

This paper presents a boon and amend technique for eradicating the artifacts from the Electroencephalogram (EEG) signals. The abolition of artifacts from scalp EEGs is of considerable implication for both the computerized and visual investigation of fundamental brainwave activities. These noise sources increase the difficulty in analyzing the EEG and procurement clinical information related to pathology. Hence it is critical to design a procedure for diminution of such artifacts in EEG archives. This paper uses a blind extraction algorithm, appropriate for the generality of complex-valued sources and both complex noncircular and circular, is introduced. This is achieved based on higher order statistics of dormant sources, and using the deflation approach Spatially-Constrained Independent Component Analysis (SCICA) to separate the Independent Components (ICs) from the initial EEG signal. As the next phase, level-4 daubechies wavelet db-4 is applied to extract the brain activity from purged artifacts, and lastly the artifacts are projected back and detracted from EEG signals to get clean EEG data. Here, thresholding plays an imperative role in delineating the artifacts and hence an improved thresholding technique called Otsu’s thresholding is applied. Experimental consequences show that the proposed technique results in better removal of artifacts.

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Spatial and Transform Domain Filtering Method for Image De-noising: A Review

By Vandana Roy Shailja Shukla

DOI:, Pub. Date: 8 Jul. 2013

Present investigation reveals the quantum of work carried in the filtering methods for image de-noising. An image is often gets corrupted by various noises that are visible or invisible while being gathered, coded, acquired and transmitted. Noise influences various process parameters that may cause a quality problem for further image processing. De-noising of natural images is appears to be very simple however when considered under practical situations becomes complex. It has been cited by various author that parameter such as type and quantum of noise, image etc. through single algorithm or approach becomes cumbersome when results are optimized. In order to improve the quality of an image noise must be removed when the image is pre-processed and the important signal features like edge details should be retained as much as possible. The search on efficient image de-noising methods is still a valid challenge at the crossing of functional analysis and statistics. This paper reviews significant de-noising methods (spatial and transform domain method) and their salient features and applications. One filter in each category has been taken in consideration to understand the characteristics of both spatial and transform domain filters.

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