Method and recording medium for separating and composing background and character image data
US5761339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1995 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Nov 28, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing method for automatically executing operation steps of repairing a defect of an image of a document which is read by a scanner and changing a background image in a short time and a recording medium for storing them. An image processing method comprising: PA1 (a) A step of separating background image data from said image data by processing by a maximum filter for comparing the brightness of each pixel constituting said image data with the brightness of peripheral pixels and replacing it with the maximum brightness; and PA1 (b) a step of separating character and figure image data by subtracting the background image data obtained by the above step in (a) from the above image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.