Method and apparatus for recording image details of the palm of a hand
First Claim
1. In an identification system, a method of recording image details of the palm of a hand, comprising the steps of:
- bombarding the palm with radiant energy so that said palm absorbs the radiant energy and emits visible light from the surface thereof, the levels of visible light varying in accordance with the characteristics of the palm and the surface thereof;
optically raster-scanning the surface of said palm to sense the varying levels of light and to develop an analog electrical signal proportional thereto; and
processing said analog signal to record a complete picture of said image details.
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Accused Products
Abstract
A method and apparatus for enhancing image details of an object to be recorded. The object, such as the palm of a hand, is bombarded by radiant energy from an ultraviolet light source in such a manner that the object absorbs the radiant energy and emits visible light in the form of fluorescence and phosphorescence. A camera optically scans the object and records image details that have become available due to the fluorescence and phosphorescence. The details of objects having rough or irregular surfaces may be further enhanced by disposing the ultraviolet light source at an angle with respect to the surface of the object so that portions thereof are shaded while other portions of the surface absorb the radiant energy and emit visible light. Appropriate filters may be provided to reduce the effects of extraneous light.
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Citations
10 Claims
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1. In an identification system, a method of recording image details of the palm of a hand, comprising the steps of:
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bombarding the palm with radiant energy so that said palm absorbs the radiant energy and emits visible light from the surface thereof, the levels of visible light varying in accordance with the characteristics of the palm and the surface thereof; optically raster-scanning the surface of said palm to sense the varying levels of light and to develop an analog electrical signal proportional thereto; and processing said analog signal to record a complete picture of said image details. - View Dependent Claims (2, 3, 4)
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5. In an identification system, an apparatus for recording image details of the palm of a hand, comprising:
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means for bombarding the palm with radiant energy so that said palm absorbs the radiant energy and emits visible light from the surface thereof, the levels of visible light varying in accordance with the characteristics of the palm and the surface thereof; means for optically raster-scanning the surface of said palm to sense the varying levels of light and develop an analog electrical signal proportional thereto; and means for processing said analog signals to record a complete picture of said image details. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification