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US 12,626,345 B2Granted
F-stat statistical detection of digital image tampering
AssigneeBooz Allen Hamilton Inc.
InventorRobert Shaw Sneddon
Life of this patent
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AssigneeBooz Allen Hamilton Inc.
InventorRobert Shaw Sneddon
Estimating the term…
Embodiments relate to a digital image file alteration detection controller which implements a processor configuration to efficiently detect an alteration to a digital image file. The digital image file alteration detection controller can include a processor, and a memory associated with the processor, the memory including instructions stored thereon that when executed by the processor will cause the processor to: extract Photo Response Non-Uniformity (PRNU) data of a digital image file received from the memory; determine a local variability representing a variability in PRNU data for a locale of a digital image file; determine a global variability representing a variability in PRNU data for an entire digital image file; compare local variability to global variability; and generate an alteration detection indicator indicative of an alteration detected when the local variability to global variability comparison is less than a threshold value.
A digital image file alteration detection controller which implements a processor configuration to efficiently detect an alteration to a digital image file, the digital image file alteration detection controller comprising:
A method for managing a processor configuration to efficiently detect an alteration to a digital image file by:
A non-transitory computer readable medium including instructions stored thereon that when executed by a processor will cause the processor to efficiently detect an alteration to a digital image file by:
Dependencies are inferred from the claim text.