Tampering detection for digital images
US10332243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Dec 12, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3215
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computing system for tampering detection for digital images is disclosed. The computing system uses a LTI filter to filter time series data representing images in one or both of two videos and/or a still image of a live photo captured by a camera. A causal relationship in time existed between the images in the two videos and the still image when they were captured by the camera. The computing system determines whether the filtered output data representing an image by using the LTI filter is causal. If the computing system determines that the filtered output data representing the image is non-causal, it asserts a signal indicating that the image has been modified after it was captured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.