Title :
A novel binary method for fingerprint optical coherence tomography images
Author :
Yu-wei Hsu ; Jiann-Der Lee ; Tseng, E. ; Li-chang Liu
Author_Institution :
Dept. of Elec. Eng., Nat. ChiaoTung Univ., Hsinchu, Taiwan
Abstract :
This paper described a novel binary method for inhomogeneously lighted fingerprint optical coherence tomography (OCT) images. To reduce the light effect problem, a block size is calculated by the median value of the length values of white pixels between black pixels in the initial binary result and used to rescale the gray values of the input image. The rescaled gray image is used to calculate the binary candidate image and the binary gradient direction image. The final ridges are calculated by using the relationship between the binary candidate image and the binary gradient direction image.
Keywords :
biomedical optical imaging; fingerprint identification; gradient methods; medical image processing; optical tomography; OCT; binary candidate image; binary gradient direction image; fingerprint optical coherence tomography images; gray values; length values; light effect problem; rescaled gray image; Biomedical optical imaging; Coherence; Fingerprint recognition; Nonhomogeneous media; Optical imaging; Optical reflection; Tomography; OCT; Optical coherence tomography; binary; fingerprint; inhomogeneous light;
Conference_Titel :
Consumer Electronics (GCCE), 2014 IEEE 3rd Global Conference on
Conference_Location :
Tokyo
DOI :
10.1109/GCCE.2014.7031288
