Image extraction method and authentication apparatus
First Claim
Patent Images
1. An image extraction method comprising:
- a first image pickup step to pick up an image of an object positioned in front of a background using wavelengths in a visible light region;
a second image pickup step to pick up an image of the object positioned in front of the background using wavelengths in an infrared region; and
an extracting step to extract only the object based on the images picked up by the first and second image pickup steps, wherein at least a surface of the background is formed by an organic dye.
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Abstract
An image extraction method picks up an image of an object positioned in front of a background using wavelengths in a visible light region, picks up an image of the object positioned in front of the background using wavelengths in an infrared region, and extracts only the object based on the picked up images. At least a surface of the background is formed by an organic dye.
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Citations
9 Claims
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1. An image extraction method comprising:
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a first image pickup step to pick up an image of an object positioned in front of a background using wavelengths in a visible light region;
a second image pickup step to pick up an image of the object positioned in front of the background using wavelengths in an infrared region; and
an extracting step to extract only the object based on the images picked up by the first and second image pickup steps, wherein at least a surface of the background is formed by an organic dye. - View Dependent Claims (2, 3, 4)
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5. An authentication apparatus comprising:
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a first image pickup section to pick up an image of an object positioned in front of a background using wavelengths in a visible light region;
a second image pickup section to pick up an image of the object positioned in front of the background using wavelengths in an infrared region;
an extracting section to extract only an image of the object based on the images picked up by the first and second image pickup sections; and
a matching section to compare the image extracted by the extracting section and registered object images, and to output a result of comparison as an authentication result, wherein at least a surface of the background is formed by an organic dye. - View Dependent Claims (6, 7, 8, 9)
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Specification