Method and apparatus for generating and identifying identification code
View Patent ↗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.
1. A computer-implemented method comprising:
determining a center of a circular identification code that is to be generated;
determining a plurality of concentric circles around the center of the circular identification code that is to be generated;
determining a position detection pattern based on a particular concentric circle that has a particular radius from the center of the circular identification code that is to be generated;
determining, for the position detection pattern, a position of a start pattern; and
encoding, on the position detection pattern and based on the position of the start pattern, N-ary characters corresponding to a to-be-encoded content to obtain the identification code, wherein:
codes corresponding to adjacent and same characters in the N-ary characters form an arc line segment having the particular radius,
a code corresponding to a character that is different from both adjacent characters in the N-ary characters is a circular point, and
codes corresponding to different characters in the N-ary characters have different colors, and N is a positive integer not less than two.
2. The method of claim 1 , wherein determining the position of the start pattern comprises selecting a particular position from among multiple positions along the particular concentric circle that have been designated as a candidate start positions.
3. The method of claim 1 , wherein each of the multiple positions have equal spacing around the particular concentric circle.
4. The method of claim 1 , wherein determining the position of the start pattern comprises:
establishing a polar coordinate system around the center of the circular identification code that is to be generated.
5. The method of claim 1 , wherein the position detection pattern includes a region having a predetermine thickness around the particular concentric circle.
6. The method of claim 1 , wherein the N-ary characters are encoded in a counterclockwise pattern.
7. The method of claim 1 , comprising:
generating non-functional data within an area that is surrounded by one of the concentric circles that has a smallest radius.
8. A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:
determining a center of a circular identification code that is to be generated;
determining a plurality of concentric circles around the center of the circular identification code that is to be generated;
determining a position detection pattern based on a particular concentric circle that has a particular radius from the center of the circular identification code that is to be generated;
determining, for the position detection pattern, a position of a start pattern; and
encoding, on the position detection pattern and based eft-a on the position of the start pattern, N-ary characters corresponding to a to-be-encoded content to obtain the identification code, wherein:
codes corresponding to adjacent and same characters in the N-ary characters form an arc line segment having the particular radius,
a code corresponding to a character that is different from both adjacent characters in the N-ary characters is a circular point, and
codes corresponding to different characters in the N-ary characters have different colors, and N is a positive integer not less than two.
9. The medium of claim 8 , wherein determining the position of the start pattern comprises selecting a particular position from among multiple positions along the particular concentric circle that have been designated as a candidate start positions.
10. The medium of claim 8 , wherein each of the multiple positions have equal spacing around the particular concentric circle.
11. The medium of claim 8 , wherein determining the position of the start pattern comprises:
establishing a polar coordinate system around the center of the circular identification code that is to be generated.
12. The medium of claim 8 , wherein the position detection pattern includes a region having a predetermine thickness around the particular concentric circle.
13. The medium of claim 8 , wherein the N-ary characters are encoded in a counterclockwise pattern.
14. The medium of claim 8 , wherein the operations comprise:
generating non-functional data within an area that is surrounded by one of the concentric circles that has a smallest radius.
15. A computer-implemented system comprising:
one or more computers; and
one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
determining a center of a circular identification code that is to be generated;
determining a plurality of concentric circles around the center of the circular identification code that is to be generated;
determining a position detection pattern based on a particular concentric circle that has a particular radius from the center of the circular identification code that is to be generated;
determining, for the position detection pattern, a position of a start pattern; and
encoding, on the position detection pattern and based on the position of the start pattern, N-ary characters corresponding to a to-be-encoded content to obtain the identification code, wherein:
codes corresponding to adjacent and same characters in the N-ary characters form an arc line segment having the particular radius,
a code corresponding to a character that is different from both adjacent characters in the N-ary characters is a circular point, and
codes corresponding to different characters in the N-ary characters have different colors, and N is a positive integer not less than two.
16. The method of claim 15 , wherein determining the position of the start pattern comprises selecting a particular position from among multiple positions along the particular concentric circle that have been designated as a candidate start positions.
17. The method of claim 15 , wherein each of the multiple positions have equal spacing around the particular concentric circle.
18. The method of claim 15 , wherein determining the position of the start pattern comprises:
establishing a polar coordinate system around the center of the circular identification code that is to be generated.
19. The method of claim 15 , wherein the position detection pattern includes a region having a predetermine thickness around the particular concentric circle.
20. The method of claim 15 , wherein the N-ary characters are encoded in a counterclockwise pattern.