Determining image forensics using an estimated camera response function
AssigneeHoneywell International Inc.
InventorScott McCloskey
Life of this patent
Estimating the term…
Abstract
An image forensics system estimates a camera response function (CRF) associated with a digital image, and compares the estimated CRF to a set of rules and compares the estimated CRF to a known CRF. The known CRF is associated with a make and a model of an image sensing device. The system applies a fusion analysis to results obtained from comparing the estimated CRF to a set of rules and from comparing the estimated CRF to the known CRF, and assesses the integrity of the digital image as a function of the fusion analysis.
Claims20
A process to assess integrity in a digital image comprising:
- estimating a camera response function (CRF) associated with the digital image;
- comparing the estimated CRF to a set of rules;
- comparing the estimated CRF to a known CRF, the known CRF associated with a make and a model of an image sensing device;
- receiving metadata stored in a header of the digital image, the metadata stored in the header of the digital image identifying a make and a model of an image sensing device that created the digital image;
- receiving metadata stored in a database, the metadata stored in the database associated with the make and model of the image sensing device that created the digital image;
- comparing the metadata stored in the header of the digital image to the metadata stored in the database that is associated with the make and model of the image sensing device that created the digital image;
- applying a fusion analysis to results obtained from comparing the estimated CRF to a set of rules, from comparing the estimated CRF to the known CRF, and from comparing the metadata stored in the header of the digital image to the metadata stored in the database that is associated with the make and model of the image sensing device that created the digital image;
- and
- assessing the integrity of the image as a function of the fusion analysis.
A process to assess integrity in a digital image comprising:
- estimating a camera response function (CRF) associated with the digital image;
- comparing the estimated CRF to a set of rules;
- comparing the estimated CRF to a known CRF, the known CRF associated with a make and a model of an image sensing device;
- applying a fusion analysis to results obtained from comparing the estimated CRF to a set of rules and from comparing the estimated CRF to the known CRF;
- and
- assessing the integrity of the digital image as a function of the fusion analysis.
An image forensics system comprising:
- one or more processors;
- and
- a computer readable medium storing instructions that, when executed by the one or more processors, cause the system to perform operations comprising:
- estimating a camera response function (CRF) associated with a digital image;
- comparing the estimated CRF to a set of rules;
- comparing the estimated CRF to a known CRF, the known CRF associated with a make and a model of an image sensing device;
- applying a fusion analysis to results obtained from comparing the estimated CRF to a set of rules and from comparing the estimated CRF to the known CRF;
- and
- assessing the integrity of the digital image as a function of the fusion analysis.
Dependencies are inferred from the claim text.