Alibaba Group Holding Limited
Method and apparatus for generating and identifying identification code

Abstract:

One or more implementations shown in the present specification provide a method for generating an identification code. A center of a detection area is determined. A plurality of concentric circles are determined based on the center. A plurality of position detection patterns whose distance from the center is the radius are determined based on the center and a radius. A start pattern from each position detection pattern is determined. N-ary characters corresponding to a to-be-encoded content to obtain the identification code are encode on the concentric circles based on a position of the start pattern. Codes corresponding to adjacent and same characters in the N-ary characters form an arc line segment. A code corresponding to a character that is different from both adjacent characters in the N-ary characters is a point. Codes corresponding to different characters in the N-ary characters have different colors.