1. A method of updating parameters for pixels associated with a background estimation portion of a video frame, the method comprising: receiving pixels of an incoming data stream associated with the video frame; characterizing each pixel of a matrix of pixels of the video frame based upon parameters comprising a luminance value, chrominance values, a weight value and a variance for the pixel; storing the characterizations of the pixels of the matrix of pixels in a memory; comparing, for each pixel of the matrix of pixels, the parameters for the pixel with the parameters for adjacent pixels of the matrix; determining, for each pixel of the matrix of pixels, whether the parameters are similar to the parameters for the adjacent pixels; identifying one or more regions of the matrix of pixels having similar parameters; updating parameters, for each region of the one or more regions, with a single set of parameters; and storing the updated parameters for each region of the one or more regions.