1. A method of describing pattern repetitiveness of an image comprising the steps of: (a) projecting an image on a predetermined axis having a predetermined direction; (b) decomposing the projected image down one level; (c) increasing a threshold value until a pattern quantizing value is retained, and denoising the decomposed data; and (d) describing pattern repetitiveness of the image using the pattern quantizing value of the denoised data and the threshold value used for denoising.