“…Each set of stripes is then sampled into a 3-bin histogram, providing 4×4×3=48 image descriptors. (Tamura, Mori & Yamavaki, 1978) of contrast, directionality and coarseness, such that the coarseness descriptors are its sum and its 3-bin histogram, providing 1+1+1+3=6 image descriptors. (Prewitt, 1970), and include the mean, median, variance, and 8-bin histogram of both the magnitude and the direction components.…”