Image processing apparatus and method for distinguishing alphanumeric symbols on a white background and those on a mesh pattern and individually processing such image data
US6014462A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1997 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Jun 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4092
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus that distinguishes between alphanumeric symbols on a white background and those on a mesh pattern and performs individual image data processing includes an analog-to-digital converter for converting analog data to digital data, a first determiner for determining a region as a white picture element region when the region is composed of a predetermined white picture element and a plurality of white picture elements surrounding the predetermined white picture element in the digital data, a conditional variant setter for setting a conditional variant to white picture elements in the white picture element region, a potential thin line extractor for extracting a potential thin line pattern using a black picture element that has been corrected after being extracted from the digital data and a white picture element that has been corrected after being extracted from the digital data, and a second determiner for determining which one of an alphanumeric symbol on a white background, an alphanumeric symbol on a mesh pattern, and a design pattern is similar to the potential thin line pattern based on the conditional variant and the potential thin line pattern extra…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.