1. A biometric authentication device performing an authentication based on a similarity between a biometric image that is an object of comparing and an enrolled biometric image, comprising: a storage configured to store a plurality of model images generated by changing a bending angle of a joint of a biometric model and correction information of each of the plurality of model images; a biometric sensor configured to capture a biometric image that is an object of comparing; and a processor configured to execute a process, the process comprising: determining similarities between the biometric image captured by the biometric sensor and the plurality of model images; selecting a model image based on the similarities; reading correction information corresponding to the model image that is selected, from the storage; and correcting one of the biometric image captured by the biometric sensor or the enrolled biometric image based on the correction information.