Pawan Singh Mehra

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Hand gesture recognition is a very challenging topic for real life applications because of its requirements on the robustness, accuracy and efficiency. This paper describes a system that enable a user to perform computer operations using hand gesture with a simple web camera as input device. This system involves four phases namely image acquisition, image(More)
In this paper conventional Playfair Cipher is being modified by encrypting the plaintext in blocks. For each block the keyword would be the same but the matrix will shift by some random value. As a result of which the diagram analysis would be very difficult which is done in the traditional Playfair Cipher to obtain the plaintext from the ciphertext. The(More)
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