Fingerprint identification system, fingerprint identification method, and electronic equipment

A method of fingerprint identification, comprising:

• S1:
• collecting, by a fingerprint sensor, multiple frames of fingerprint images sliding-inputted by a user
• S2:
• judging, by a judging unit, whether, among the multiple frames of fingerprint images, there is a first overlap region between a current frame of fingerprint images and a previous frame of fingerprint images;
• when there is a first overlap region between the current frame of fingerprint images and the previous frame of fingerprint images, proceeding to S3;
• and when there is not a first overlap region between the current frame of fingerprint images and the previous frame of fingerprint images, returning to S1;
• S3:
• removing, by the judging unit, the first overlap region from the current frame of fingerprint images and superposing the previous frame of fingerprint images with the current frame of fingerprint images without the first overlap region thereof to form a superposed fingerprint image;
• or removing, by the judging unit, the first overlap region from the previous frame of fingerprint images and superposing the current frame of fingerprint images with the previous frame of fingerprint images without the first overlap region to form the superposed fingerprint image;
• S4:
• judging, by the judging unit, whether there is a second overlap region between a next frame of fingerprint images and the superposed fingerprint image, until completing judgment of all the multiple frames of fingerprint images to obtain a template fingerprint image;
• S5:
• extracting and saving, by a processing unit, characteristic points of the template fingerprint image;
• S6:
• collecting, by the fingerprint sensor, a to-be-identified fingerprint image pressing-inputted by the user;
• S7:
• extracting, by the processing unit, characteristic points of the to-be-identified fingerprint image and determining whether the characteristic points of the to-be-identified fingerprint image match with the characteristic points of the template fingerprint image;
• when the characteristic points of the to-be-identified fingerprint image match with the characteristic points of the template fingerprint image, proceeding to S8;
• and when the characteristic points of the to-be-identified fingerprint image do not match with the characteristic points of the template fingerprint image, proceeding to S9;
• S8:
• determining, by the processing unit, the to-be-identified fingerprint image as a matching fingerprint image;
• and
• S9:
• determining, by the processing unit, the to-be-identified fingerprint image as a non-matching fingerprint image.

An electric equipment, comprising:

• a fingerprint identification system, comprising a fingerprint sensor, a judging unit, and a processing unit, wherein:
• the fingerprint sensor collects multiple frames of fingerprint images sliding-inputted by a user;
• the judging unit determines whether, among the multiple frames of fingerprint images, there is a first overlap region between a current frame of fingerprint images and a previous frame of fingerprint images;
• when there is a first overlap region between the current frame of fingerprint images and the previous frame of fingerprint images, the judging unit removes the first overlap region from the current frame of fingerprint images and superposes the previous frame of fingerprint images with the current frame of fingerprint images without the first overlap region thereof to form a superposed fingerprint image;
• or the judging unit removes the first overlap region from the previous frame of fingerprint images and superposes the current frame of fingerprint images with the previous frame of fingerprint images without the first overlap region to form the superposed fingerprint image;
• the judging unit also judges whether there is a second overlap region between a next frame of fingerprint images and the superposed fingerprint image, until completing judgment of all the multiple frames of fingerprint images to obtain a template fingerprint image;
• the processing unit extracts and saves characteristic points of the template fingerprint image;
• when there is not a first overlap region between the current frame of fingerprint images and the previous frame of fingerprint images, the fingerprint sensor collects new multiple frames of fingerprint images sliding-inputted by the user;
• the fingerprint sensor collects a to-be-identified fingerprint image pressing-inputted by the user, and the processing unit extracts characteristic points of the to-be-identified fingerprint image and determines whether the characteristic points of the to-be-identified fingerprint image match with the characteristic points of the template fingerprint image;
• when the characteristic points of the to-be-identified fingerprint image match with the characteristic points of the template fingerprint image, the processing unit determines the to-be-identified fingerprint image as a matching fingerprint image;
• and
• when the characteristic points of the to-be-identified fingerprint image do not match with the characteristic points of the template fingerprint image, the processing unit determines the to-be-identified fingerprint image as a non-matching fingerprint image.