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US 9,031,329 B1Granted
Photo forensics using image signatures
AssigneeFourandsix Technologies, Inc.
InventorsHany Farid, Kevin Connor
Life of this patent
Estimating the term…
Abstract
Evaluating an image is disclosed. A plurality of attributes of the image is analyzed. A determination is made that a portion of the attributes of the image imperfectly matches a reference attribute signature corresponding to a device. It is distinguished whether the imperfect match likely corresponds to a modification of the image.
Claims25
A system for evaluating an image, comprising:
- a processor configured to
- analyze a plurality of attributes of the image, wherein the plurality of attributes includes attributes belonging to a plurality of different attribute categories,
- determine that a portion of the attributes imperfectly matches a reference attribute signature corresponding to a device, wherein determining that the portion of the attributes imperfectly matches the reference attribute signature includes determining that an image signature determined using at least a first identifier of a first attribute of the plurality of attributes of the image belonging to a first attribute category and a second identifier of a second attribute of the plurality of attributes of the image belonging to a second attribute category matches only in part the reference attribute signature associated with the device, and
- distinguish whether the imperfect match likely corresponds to a modification;
- and
- a memory coupled to the processor and configured to provide the processor with instructions.
3 more elements
A method for evaluating an image, comprising:
- analyzing a plurality of attributes of the image, wherein the plurality of attributes includes attributes belonging to a plurality of different attribute categories;
- using a processor to determine that a portion of the attributes imperfectly matches a reference attribute signature corresponding to a device, wherein determining that the portion of the attributes imperfectly matches the reference attribute signature includes determining that an image signature determined using at least a first identifier of a first attribute of the plurality of attributes of the image belonging to a first attribute category and a second identifier of a second attribute of the plurality of attributes of the image belonging to a second attribute category matches only in part the reference attribute signature associated with the device;
- and
- distinguishing whether the imperfect match likely corresponds to a modification.
1 more element
A computer program product for evaluating an image, the computer program product being embodied in a tangible computer readable storage medium and comprising computer instructions for:
- analyzing a plurality of attributes of the image, wherein the plurality of attributes includes attributes belonging to a plurality of different attribute categories;
- determining that a portion of the attributes imperfectly matches a reference attribute signature corresponding to a device, wherein determining that the portion of the attributes imperfectly matches the reference attribute signature includes determining that an image signature determined using at least a first identifier of a first attribute of the plurality of attributes of the image belonging to a first attribute category and a second identifier of a second attribute of the plurality of attributes of the image belonging to a second attribute category matches only in part the reference attribute signature associated with the device;
- and
- distinguishing whether the imperfect match likely corresponds to a modification.
1 more element
Dependencies are inferred from the claim text.