US 2025/0156522 A1 · CERTIFYING CAMERA IMAGES

Abstract

A system may certify that an image originated from a particular camera. A camera operator may register a camera by providing a public key and images captured using the camera and digitally signed with a corresponding private key. The system may train a machine learning model to identify image features resulting from physical characteristics of the camera. The system may subsequently receive a request to certify an image accompanied by the public key. The system may retrieve the model using the public key and determine a probability that the image originated from the camera. The system may compute a zero-knowledge proof that the image was certified so that the model itself need not be exposed. The system may defend against adversarial attacks that flood the system with manipulated duplicate images in an attempt to trick the model by rejecting images insufficiently different from other recently received images.

Claims20

Dependent claims

A computer-implemented method comprising:

receiving first image data representing a first plurality of images captured using a first camera;
receiving a public key corresponding to a first user device;
verifying, using the public key, that the first image data was digitally signed using a private key corresponding to the public key;
training a first machine learning model using the first image data to identify first features corresponding to the first camera, the first features resulting from physical defects of the first camera;
associating the first machine learning model with the public key;
receiving a first request to verify second image data corresponding to the public key;
verifying, using the public key, that the second image data was digitally signed using the private key;
retrieving the first machine learning model using the public key;
and
using the first machine learning model to determine a first probability that a first image was captured using the first camera.

7 more elements

A computer-implemented method comprising:

receiving, from a first user device, a first request for certification that first image data originated from a first camera, the first image data corresponding to a public key;
retrieving, using the public key, a first machine learning model trained to identify first features corresponding to the first camera, the first features resulting from at least one physical characteristic of the first camera;
processing the first image data using the first machine learning model to determine a first probability that the first image data originated from the first camera;
determining that the first probability satisfies a first condition;
in response to determining that the first probability satisfies the first condition, determining first certification data indicating that the first image data originated from the first camera;
and
sending, to the first user device, a first indication that the first image data has been certified.

4 more elements

A computer-implemented method comprising:

receiving, from a first user device, a first request for verification that first image data originated from a first camera, the first image data corresponding to a public key;
retrieving, using the public key, a first machine learning model trained to identify first features corresponding to the first camera, the first features resulting from at least one physical characteristic of the first camera;
processing the first image data using the first machine learning model to determine a first probability that the first image data originated from the first camera;
determining that the first probability satisfies a first condition;
in response to determining that the first probability satisfies the first condition, determining first certification data indicating that the first image data originated from the first camera;
and
sending the first certification data to the first user device.

4 more elements

Dependencies are inferred from the claim text.

Certifying camera images

Life of this patent

Certifying camera images

Life of this patent

Abstract

Claims20