Security identification system
First Claim
1. A method of capturing images of a subject at a checkpoint for recognition of the subject comprising the steps of:
- creating a checkpoint;
positioning an image capturing device so that the image capturing device can capture an image of a subject at the checkpoint;
filtering the light that enters the image capturing device so that only a predetermined bandwidth enters the image capturing device;
positioning a light source so that the light source can illuminate a subject at the checkpoint;
providing a light from the light source when the light source is activated that has a bandwidth that is similar to the predetermined bandwidth that enters the image capturing device;
capturing a first image of a subject at the checkpoint with the image capturing device with ambient light;
activating the light source;
capturing a second image of the subject at the checkpoint with the image capturing device while the light source is activated; and
determining a difference image by subtracting the second image from the first image.
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Accused Products
Abstract
This is a security and identification system designed to obtain improved images for use by real-time facial recognition and identification systems for screening individuals passing through secure entry or checkpoints such as airport passenger terminals, government offices, and other secure locations. The system detects the presence of a subject at the checkpoint, interactively instructs the subject to stop and move into position for proper identification and recognition, analyzes the facial features of the subject as (s)he passes through the checkpoint, and compares the features of the subject with those in a database. The system then generates different signals depending upon whether or not the subject is recognized. In one aspect of the invention, different methods and apparatus are provided for compensating for low ambient light so as to improve the quality of the facial image of the subject that is obtained.
134 Citations
1 Claim
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1. A method of capturing images of a subject at a checkpoint for recognition of the subject comprising the steps of:
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creating a checkpoint;
positioning an image capturing device so that the image capturing device can capture an image of a subject at the checkpoint;
filtering the light that enters the image capturing device so that only a predetermined bandwidth enters the image capturing device;
positioning a light source so that the light source can illuminate a subject at the checkpoint;
providing a light from the light source when the light source is activated that has a bandwidth that is similar to the predetermined bandwidth that enters the image capturing device;
capturing a first image of a subject at the checkpoint with the image capturing device with ambient light;
activating the light source;
capturing a second image of the subject at the checkpoint with the image capturing device while the light source is activated; and
determining a difference image by subtracting the second image from the first image.
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Specification