Method for interpreting hand drawn diagrammatic user interface commands
US6411732B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1997 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jul 21, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04883
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This invention discloses image analysis techniques supporting the interpretation of marks on a large drawing board for purposes of controlling a Board transcription device. In order for users to control such a transcription device by writing on the Board itself, the system recognizes certain markings and directives drawn by users in accordance with an agreed-upon format for control diagrams conveying information as to the parameters of transcription. In the embodiment herein described, nested squares, spatial region indicators, and symbolic annotation analysis area used to convey command parameters. The present invention demonstrates line drawing analysis techniques that support grouping and manipulation of symbolic tokens in a Scale-Space blackboard data structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.