Method and system for detection of ghosting artifact in a video
US9818178B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2016 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Jul 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for ghost detection in an image are described. Initially, a mode for detecting ghosting artifact is determined for deciding whether to perform analog or inter field ghosting analysis on the image. Based on the determined mode, a plurality of fields is determined to generate a field overlay image. The image is updated based on the field overlay image and an inter-field average of absolute difference is computed. A significant edge image, a principal edge image, and a delta gradient image are generated. A confidence score indicative of a likelihood of ghosting artifact in the image, is computed based on at least the inter-field average of absolute difference, a first and a second count of pixels in the delta gradient image, a third count of pixels in the principal edge image, and a count of rows of the significant edge image that correspond to the ghosting artifact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.