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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