Biometric information input device, biometric authentication device, biometric information processing method, and computer-readable recording medium recording biometric information processing program

A biometric authentication device comprising:

• biometric information collection means reading a living body site to be authenticated relatively moving and successively collecting a plurality of partial images of said living body site as biometric information;
• movement direction detection means detecting a movement direction of said living body site with respect to said biometric information collection means based on said biometric information collected by said biometric information collection means;
• coordinate conversion means performing a coordinate conversion on said biometric information collected by said biometric information collection means using said movement direction detected by said movement direction detection means;
• and
• authentication means performing authentication on said living body site to be authenticated using results of said coordinate conversion by said coordinate conversion means.

A biometric information processing method comprising the steps of:

• a biometric information collection step of reading a relatively-moving living body site, by means of biometric information collection means, and successively collecting a plurality of partial images of said living body site as biometric information;
• a movement direction detection step of detecting a movement direction of said living body site with respect to said biometric information collection means based on said biometric information collected in said biometric information collection step;
• and
• a coordinate conversion step of performing a coordinate conversion on said biometric information collected by said biometric information collection means using said movement direction detected in said movement direction detection step.

A computer readable recording medium recording a biometric information processing program for causing a computer to perform the steps of:

• a biometric information collection step of reading a relatively-moving living body site, by means of biometric information collection means, and successively collecting a plurality of partial images of said living body site as biometric information;
• a movement direction detection step of detecting a movement direction of said living body site with respect to said biometric information collection means based on said biometric information collected in said biometric information collection step;
• and
• a coordinate conversion step of performing a coordinate conversion on said biometric information collected by said biometric information collection means using said movement direction detected in said movement direction detection step.