Fingerprint unlocking method and terminal

A terminal, comprising:

• at least one processor;
• and
• a memory coupled with the processor and configured to store program codes, wherein the program codes, when executed, cause the processor to perform:
• an acquiring unit, configured to acquire fingerprint information;
• a first determining unit, configured to determine, from among preset fingerprint matching data, a target group number of a group of fingerprint templates that is most similar to the fingerprint information acquired by the acquiring unit, the preset fingerprint matching data comprising N groups of fingerprint templates, wherein each group of fingerprint templates corresponds to one finger and has one unique identification group number, and N is an integer greater than 1, wherein each group of fingerprint templates comprises at least two fingerprint templates;
• a first matching unit, configured to match the fingerprint information acquired by the acquiring unit with all or part of fingerprint templates corresponding to the target group number determined by the first determining unit;
• and
• an unlocking control unit, configured to unlock the terminal when the first matching unit determines a target matching value between a fingerprint template corresponding to the target group number and the fingerprint information, the target matching value being greater than a first preset threshold;
• and
• a counting unit, configured to increase a number of successful match of the target group number by 1 after the unlocking control unit unlocks the terminal;
• and
• a sorting unit, configured to sort the N groups of fingerprint templates in descending order of the number of successful match, and re-number the N groups of fingerprint templates sorted, wherein the first matching unit matches fingerprint information acquired next time with the re-numbered N groups of fingerprint templates.

A method for fingerprint unlocking, comprising:

• acquiring fingerprint information;
• performing a first matching process of matching the fingerprint information with preset fingerprint matching data to obtain multiple matching values, wherein the preset fingerprint matching data comprises N groups of fingerprint templates, wherein each group of fingerprint templates corresponds to one finger and has one unique identification group number, wherein N is an integer greater than 1, wherein each group of fingerprint templates comprises at least two fingerprint templates;
• unlocking a terminal when the maximum matching value among the multiple matching values is greater than a first threshold;
• performing a second matching process when the maximum matching value is less than or equal to a first preset threshold and greater than a second preset threshold, wherein the first preset threshold is greater than the second preset threshold, wherein the second matching process matches the fingerprint information with the group of fingerprint templates corresponding to the maximum matching value;
• and
• unlocking the terminal when a target matching value between any fingerprint template corresponding to the maximum matching value and the fingerprint information is determined, wherein the target matching value is greater than the first preset threshold;
• and further comprising:
• determining a group number of a group of fingerprint templates corresponding to the maximum matching value as a target group number;
• increasing a number of successful match of the target group number by 1 after unlocking;
• and
• sorting and then re-numbering the N groups of fingerprint templates in descending order of the number of successful match, whereby the terminal matches fingerprint information acquired next time with the re-numbered N groups of fingerprint templates.