Text recognition in a video stream using a combination of recognition results with per-character weighting
US11640720B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Feb 19, 2021 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Jul 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/413
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Text recognition in a video stream using combined recognition results with per-character weighting. In an embodiment, for each frame in a video stream, a text-recognition result is obtained and a frame weight is calculated. The text-recognition results of the frames are combined by aligning character-recognition results and calculating a character weight for each character-recognition result. At each position in the alignment, the character-recognition results are accumulated based on the character weights and frame weights to produce an accumulated text-recognition result that represents a text field in the video stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.