FINGER IDENTIFICATION METHOD AND APPARATUS
First Claim
1. A personal identification apparatus comprising:
- one or more light sources for irradiating light to a finger;
an image pickup unit having an opening for inputting light transmitted through a finger which is irradiated by only an external light or by both of the external light and the one or more light sources, for picking up an image by using the light transmitted through the finger which is irradiated by only the external light or by both of the external light and the one or more light sources;
a housing having the one or more light sources and the image pickup unit within the housing;
a light source power control unit for changing light power of the one or more light sources;
an opening fabricated on a surface of the housing; and
a partition forming a space which excludes other internal components than the opening of the image pick up and the opening of the housing,wherein the partition has a hole that exposes the opening of the image pick up toward an inside of the space.
2 Assignments
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Accused Products
Abstract
An image pickup scheme capable of always providing an optimum quality of a blood vessel pattern, in image pickup of a blood vessel pattern of a finger using transmitted light, without being affected by a difference, if any, in an external environment. A personal identification apparatus includes light sources for irradiating light to be transmitted by a finger, an image pickup unit for picking up an image using light transmitted by the finger, finger detection unit for detecting that the finger exists in a predetermined position, finger region extraction unit for extracting a region occupied by the finger from an image picked up by the image pickup unit, and gain changing unit for changing an amplification factor of image pickup elements in the image pickup unit on the basis of a picture quality of a specific region within the extracted region.
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Citations
9 Claims
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1. A personal identification apparatus comprising:
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one or more light sources for irradiating light to a finger; an image pickup unit having an opening for inputting light transmitted through a finger which is irradiated by only an external light or by both of the external light and the one or more light sources, for picking up an image by using the light transmitted through the finger which is irradiated by only the external light or by both of the external light and the one or more light sources; a housing having the one or more light sources and the image pickup unit within the housing; a light source power control unit for changing light power of the one or more light sources; an opening fabricated on a surface of the housing; and a partition forming a space which excludes other internal components than the opening of the image pick up and the opening of the housing, wherein the partition has a hole that exposes the opening of the image pick up toward an inside of the space. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9)
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7. A personal identification apparatus comprising:
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one or more light sources for irradiating light to a finger; an image pickup unit having an opening for inputting light transmitted through a finger which is irradiated by the one or more light sources, for picking up an image by using the light transmitted through the finger which is irradiated by the one or more light sources; an opening fabricated on a surface of a housing; and a partition forming a space which excludes other internal components than the opening of the image pick up and the opening of the housing, wherein the partition has a hole that exposes the opening of the image pick up toward the an inside of the space.
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Specification