Patent ID: 8295560

Claim:
A biometric information sensing apparatus, comprising: a collection device that collects a fingerprint image as a biometric information image of a biometric part; a width detection device that detects a width of the biometric part for each of a plurality of divided images that are obtained by dividing the fingerprint image, which is collected by the collection device, in the longitudinal direction of a finger; a narrowing position detection device that detects a narrowing position of the biometric part in the fingerprint image on the basis of the width; an orientation information obtainment device that obtains ridge orientations as orientation information related to the biometric part in the fingerprint image; and a determination device that determines a collection status of the fingerprint image on the basis of the ridge orientations near the narrowing position; wherein the narrowing position detection device detects, as a first narrowing position as the narrowing position, a position of a divided image that has the width smaller than the width of an adjacent divided image in the longitudinal direction.