Stroke-number-free and stroke-order-free on-line Chinese character recognition method
US5796867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Jun 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/347
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A stroke-order-free and stroke-number-free method for the on-line recognition of Chinese characters comprising the steps of: (a) inputting a handwritten input script on an on-line basis, (b) preprocessing the input script to reduce a number of possible matching template characters; (c) performing basic stroke recognition using a database of basic strokes to identify all possible basic strokes contained in the handwritten input script; (d) performing stroke correspondence using a database of stroke correspondence rules to find matching strokes in template characters for the strokes contained in the handwritten input script; and (e) performing computation of discrimination functions using a database of character patterns and a database of spatial relationships between strokes of characters to find one or more template characters with minimum error. Some of the key features of the method include: (a) the strokes recognized during the stroke correspondence are expanded to include fore strokes, back strokes, and points, in which the fore strokes are strokes that actually appear in a character, the back strokes are fictitious strokes provided to allow for stroke connections that should n…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.