Prerana Sharma

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Facial analysis and recognition is one of the most popular information processing tasks. Face recognition requires some form of dimensionality reduction in the face dataset. There are numerous face representation and recognition techniques which vary in their complexity and efficiency. In this study, we have done a comparative analysis of Eigenfaces based(More)
We propose an algorithm that shows improvement in computation timeof existing image encryption-decryption methods. The algorithm also introduces additional one-level of encryption key into the existing methods. Image compression properties of the <i>DWT</i> (Discrete Wavelet Transform) are utilized to bring the improvement. The new algorithms retain(More)
We propose three novel algorithms for video encryption and decryption. The algorithms insert one-level of encryption key into the existing methods. Data compression properties of the DWT (Discrete Wavelet Transform) are utilized to make the algorithm faster. The new algorithms retain the robustness of existing image encryption-decryption algorithms. A video(More)
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