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US 8,805,028 B2Granted
Personal identification device using vessel pattern of fingers
AssigneeHitachi, Ltd.
InventorsNaoto Miura, Takafumi Miyatake, Akio Nagasaka, Harumi Kiyomizu
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Abstract
Personal identification is implemented by picking up finger vein patterns when the user naturally grasps a grip such as doorknob. The device for personal identification has a light source provided to irradiate light on the finger from the palm side, a camera to pick up the vessel image of the finger, and a processor to extract features of the vessel from the image and compare the obtained features with the registered ones. The camera picks up the light that exits from the backside of the finger after penetrating it.
Claims14
A personal identification device comprising:
- a grip having a curvature configured to be grasped by a hand;
- a light source provided within said grip so as to irradiate light onto a finger of said hand;
- a camera for picking up the image of the light passed through said finger from said light source;
- and
- a processor for extracting a vessel pattern from said image picked up by said camera so as to identify individuals,
- wherein said camera picks up a plurality of images of a vessel pattern of said finger including a portion between a first joint and a second joint of said finger in a time series where a relative angle between said camera and said finger is varied in a longitudinal direction of said finger, from a tip of the finger toward a palm of the hand, which moves relative to said grip as said grip is grasped by said hand, and
- wherein said processor performs the personal identification on the basis of the plurality of images picked up in time series and a plurality of registered images previously registered to make a personal authentication when at least one of the plurality of registered images is identified.
4 more elements
Dependencies are inferred from the claim text.