Method for calculating area of fingerprint overlapping region and electronic device thereof

An electronic device, comprising:

• an acquisition module;
• and
• a processing module,
• wherein the acquisition module is configured to collect a to-be-matched fingerprint and to obtain a to-be-matched fingerprint image;
• and
• the processing module is configured to search multiple pairs of matching characteristic points between the to-be-matched fingerprint image and a preset template fingerprint image;
• to obtain an image offset of the to-be-matched fingerprint image according to the multiple pairs of matching characteristic points;
• to, based on the image offset, adjust a position of the to-be-matched fingerprint image to obtain an overlapping region between the to-be-matched fingerprint image and the preset template fingerprint image;
• and to calculate a total number of image pixels within the overlapping region to calculate an area of the overlapping region based on the total number of image pixels within the overlapping region.

A non-transitory computer-readable medium having computer program for, when being executed by a processor, performing a method for calculating an area of a fingerprint overlapping region, the method comprising:

• collecting a to-be-matched fingerprint to obtain a to-be-matched fingerprint image;
• searching multiple pairs of matching characteristic points between the to-be-matched fingerprint image and a preset template fingerprint image;
• obtaining an image offset of the to-be-matched fingerprint image according to the multiple pairs of matching characteristic points;
• based on the image offset, adjusting a position of the to-be-matched fingerprint image to obtain an overlapping region between the to-be-matched fingerprint image and the preset template fingerprint image;
• and
• calculating a total number of image pixels within the overlapping region, and calculating an area of the overlapping region based on the total number of image pixels within the overlapping region.