1. A method of creating a binary-coding pattern to be used in binary-coding a multi-value image, said method comprising the steps of: (a) creating a basic pattern shape of the prospective binary-coding pattern by a first arithmetic operation; (b) determining the sequence of lighting pixels composing such basic pattern by a second arithmetic operation; and (c) creating a rectangular pattern, which serves as the prospective binary-coding pattern, based on the resultant basic pattern.