Inspec keywords: Gabor filters; low-pass filters; image enhancement; band-pass filters; fingerprint identification

Other keywords: 1D lowpass Gabor filtering; ridge orientation; fingerprint enhancement; orthogonal curved-line Gabor filter; unrotated two-dimensional Gabor; 1D bandpass Gabor; fingerprint ridge structures; automatic fingerprint recognition

Subjects: Image recognition; Filtering methods in signal processing; Computer vision and image processing techniques