Figure 2From: Reference point detection for camera-based fingerprint image based on wavelet transformationKnown six types of fingerprints that acquire using scanner-based along with core-point denoted with circle and delta-point denoted with triangle. The known size types are (a) Plain-arch, (b) Tented-arch, (c) Left-loop, (d) Right-loop, (e) Twin-loop, (f) Whorl (re-printed from [20]).Back to article page