title: Fingerprint image enhancement based on nonlinear anisotropic reverse-diffusion equations.
abstract: We present an approach based on nonlinear anisotropic reverse diffusion equations (NARDE) to enhance noisy fingerprint images. After studying the nonlinear diffusion equations to denoised images and nonlinear reverse diffusion process in nature, a new scheme is advanced with new selection criteria of optimal stopping time. Experiments were carried out and showed the high efficiency of the noise removing sharpening scheme and the role of selection criteria on noisy fingerprint images.
authors.affiliation: Department of Biomedical Engineering, Southeast University, Nanjing, China.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Hao
authors.forename: Chunwei
authors.initials: C
authors.lastname: Yuan