Patent Document ID: 9317733
Application ID: 12474397
Patent Status: 1

Claim One:
1. A biometric information reading device comprising: a memory; and a processor configured to execute a procedure comprising: successively capturing a plurality of partial images containing biometric information of a user by an image capture device that captures an image of a biometric body of the user; storing a predetermined number of successive partial images captured by the image capture device in the memory, the predetermined number being two or more, extracting an image feature from each of partial images and a position of the image feature; determining whether a difference between relative positions of two successive partial images among the partial images is equal to or smaller than a threshold value, based on image features of overlapping regions between the two successive partial images; determining to output the successive partial images stored in the memory as a first set without calculating a difference between relative positions of partial images included in the first set; determining not to output a partial image that is captured after the first set when it is determined that a difference between a relative position of the partial image and a relative position of one of the partial images included in the first set is equal to or smaller than the threshold; and determining to output at least two successive partial images as a second set including a partial image that is captured after the first set without calculating a difference between relative positions of partial images included in the second set when it is determined that a difference between a relative position of the partial image and a relative position of one of the partial images included in the first set is not equal to or smaller than the threshold.