Verification of images captured using a timestamp decoded from illumination from a modulated light source
First Claim
Patent Images
1. A device comprising:
- an input for receiving images captured by a camera, of an environment illuminated by light from a visible light source;
an image processing module configured to process one or more of the images to decode a timestamp modulated into said light, and to output an indication of the decoded timestamp; and
a verification module arranged to receive the indication of the decoded timestamp output by the image processing module, and based thereon to perform an at least partially automated verification of a time at which the one or more images were captured by comparing the timestamp as currently decoded from said image with a previously determined version of the timestamp;
wherein the image processing module is further configured to apply a facial recognition and/or other image recognition algorithm to at least one of the captured images, and to thereby identify a person or persons appearing in the at least one image.
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Abstract
A device comprising: an input for receiving images captured by a camera, of an environment illuminated by light from a light source; an image processing module; and a verification module. The image processing module is configured to process one or more of the images to decode a timestamp modulated into the light, and to output an indication of the decoded timestamp. The verification module is arranged to receive the indication of the decoded timestamp output by the image processing module, and based thereon to perform an at least partially automated verification of a time at which the one or more images were captured.
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Citations
14 Claims
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1. A device comprising:
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an input for receiving images captured by a camera, of an environment illuminated by light from a visible light source; an image processing module configured to process one or more of the images to decode a timestamp modulated into said light, and to output an indication of the decoded timestamp; and a verification module arranged to receive the indication of the decoded timestamp output by the image processing module, and based thereon to perform an at least partially automated verification of a time at which the one or more images were captured by comparing the timestamp as currently decoded from said image with a previously determined version of the timestamp; wherein the image processing module is further configured to apply a facial recognition and/or other image recognition algorithm to at least one of the captured images, and to thereby identify a person or persons appearing in the at least one image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer program product for processing images, the computer program product comprising code embodied on a non-transitory computer-readable storage medium and configured so as when executed to perform operations of:
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receiving images captured by a camera, of an environment illuminated by light from a light source; and processing one or more of the images to decode a timestamp modulated into said light indicating a time at which the one or more images were captured; based on the timestamp as determined by said processing, performing an at least partially automated verification of the time at which the one or more images were captured by comparing the timestamp as currently decoded from said image with a previously determined version of the timestamp; and apply a facial recognition and/or other image recognition algorithm to at least one of the captured images, and to thereby identify a person or persons appearing in the at least one image. - View Dependent Claims (12, 13)
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14. A method comprising:
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using light emitted from a light source to illuminate an environment; encoding a timestamp indicating a current time value into the light emitted by the light source; using a camera to capture one or more of said environment; processing at least one of the images to determine the timestamp encoded into said light; and based on the timestamp as determined by said processing, performing an at least partially automated verification of a time at which the at least one image was captured by comparing the timestamp as currently decoded from said image with a previously determined version of the timestamp; and applying a facial recognition and/or other image recognition algorithm to at least one of the captured images, and to thereby identify a person or persons appearing in the at least one image.
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Specification