Abstract: A method and an apparatus for distinguishing a latent fingerprint is provided to prevent a fingerprint recognition apparatus from mis-recognizing a latent fingerprint as a fingerprint of a biomass due to a fingerprint residual on an imaging surface of an optical fingerprint input apparatus. According to the present invention, there is provided a backlight control device for controlling switching on and off of the backlight; an image acquisition device for acquiring a fingerprint image without illuminating the backlight onto the imaging surface; a fingerprint detection device for detecting the existence of a fingerprint from the image acquired by the image acquisition device; and a device for determining that the fingerprint, if detected by the fingerprint detection device, is a latent fingerprint detected due to an external light.
Type:
Grant
Filed:
February 28, 2005
Date of Patent:
February 7, 2006
Assignee:
NITGEN Co., Ltd
Inventors:
Hwi-Seok Lee, Soon-Won Jung, Jae-Hyun Jun
Abstract: A method and an apparatus for distinguishing a latent fingerprint is provided to prevent a fingerprint recognition apparatus from mis-recognizing a latent fingerprint as a fingerprint of a biomass due to a fingerprint residual on an imaging surface of an optical fingerprint input apparatus. According to the present invention, there is provided a backlight control device for controlling switching on and off of the backlight; an image acquisition device for acquiring a fingerprint image without illuminating the backlight onto the imaging surface; a fingerprint detection device for detecting the existence of a fingerprint from the image acquired by the image acquisition device; and a device for determining that the fingerprint, if detected by the fingerprint detection device, is a latent fingerprint detected due to an external light.
Type:
Grant
Filed:
February 28, 2005
Date of Patent:
January 24, 2006
Assignee:
NITGEN Co., Ltd
Inventors:
Hwi-Seok Lee, Soon-Won Jung, Jae-Hyun Jun