Method and apparatus for selecting text and image data from video images
US6178270A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | May 19, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method carried out in an image processing system in which images of documents are captured by an image capture device, such as a video camera, comprising: (a) displaying successive images captured by the video camera, each image being defined by grayscale image data and containing text matter, (b) receiving a first user input (mouse button click) defining the start of a selection and a first position within the displayed image, (c) in response to the first user input, freezing the displayed image, (d) determining the skew angle of text matter with respect to the field of view of the video camera, (e) receiving at least one further user input (further button click; drag of cursor), including a final user input (mouse button release), defining the end of a selection, and for the or each further user input, (f) determining, using the skew angle determined in step (d), the position, shape and dimensions of a selection element in dependence upon at least the first position, and (g) displaying the selection element superimposed on the frozen displayed image. The selection element may be a rectangle, or a selection block highlighting one or more words of text.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.