Method and apparatus for detecting and interpreting textual captions in digital video signals
US6101274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method for the identification and interpretation of text captions in an encoded video stream of digital video signals comprises sampling by selecting frames for video analysis, decoding by converting each of frames selected into a digitized color image, performing edge detection for generating a grey scale image, binarizing by converting the grey scale image into a bi-level image by means of a thresholding operation, compressing groups of consecutive pixel values in the binary image, mapping the consecutive pixel values into a binary value, and separating groups of connected pixels and determining whether they are likely to be part of a text region in the image or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.