Document reading apparatus capable of rectifying a picked up image data of documents
US5585926A · kind A · utility
50Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1992 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Dec 7, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a document reading apparatus capable of picking up image data of documents from above position thereof, curvature of the documents is detected by measuring the height of the document surface. In accordance with the detected curvature, interpolative and expansional processing to the picked up image data is executed. Distorted image data of the documents due to the curvature is thereby corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.