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Wednesday, 24 April 2013

VIRTUAL KEYBOARD USING MATLAB


The functional module of Virtual Keyboard has mainly a webcam as an image acquisition device for extracting frames to matlab. After attaining a particular frame it performs median filtering.  It  performs median filtering of the matrix A in two dimensions. Each output pixel contains the median value in the M-by-N neighborhood around the corresponding pixel in the input image. MEDFILT2 pads the image with zero on the edges, so the median values for the points within [M N]/2 of the edges may appear distorted. Next to do the morphological operations to extract the position of each letter cases. And there by a virtual keyboard is developed and we can edit in a text document.

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