Language-agnostic subtitle drift detection and localization
US10945041B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2020 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Jun 2, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4888
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Devices, systems, and methods are provided for language-agnostic subtitle drift detection and localization. A method may include extracting audio from video, dividing the audio into overlapping blocks, and determining the probabilities of overlapping portions of the blocks, the probabilities indicating a presence of voice data represented by the audio in the blocks. The method may generate machine blocks using overlapping portions of blocks where voice data is present, and may map the machine blocks to corresponding blocks indicating that subtitles are available for the video. For mapped blocks, the method may include determining features such as when subtitles are available without voice audio, when voice audio is available without subtitles, and when voice audio and subtitles both are available. Using the features, the method may include determining the probability that the video includes subtitle drift, and the method may include analyzing the video to localize where the subtitle drift occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.