Function spread

examples/image_processing/filters.cpp:64–66

* randomly pick neighbor from given window size and replace the * current pixel with the randomly chosen color. * No new colors are introduced, unlike hurl. */

 * No new colors are introduced, unlike hurl.
 */
array spread(const array &in, int window_width, int window_height) {
    return getRandomNeighbor(in, window_width, window_height);
}

/**
 * randomization - controls % of total number of pixels in the image