Postmasking without transcoding
US11076156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2020 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Aug 11, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus, including computer program products, implementing and using techniques providing privacy masks on a video stream. In a video received from a monitoring camera, at least one image region is selected, to which region a privacy mask should be applied. For any image frame in the video that contains the at least one image region, a flag is set to indicate a non-displayed image frame. A forward-predicted image frame referencing the non-displayed image frame is inserted, wherein coding units representing the at least one image region in the forward-predicted image frame collectively provide the privacy mask by obfuscating the at least one image region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.