Method, apparatus, and program for image processing capable of effectively preventing and detecting tampering, and a medium storing the program
US7426284B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2005 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32304
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes an acquiring mechanism configured to acquire an original document image, a dividing mechanism configured to divide the original document image acquired by the acquiring mechanism into a plurality of areas arranged in symmetry with respect to a center point of the original document image when the original document image is rotated centering around the center point of the original document image, a generating mechanism configured to generate verification data corresponding to the plurality of respective areas divided by the dividing mechanism, and an embedding mechanism configured to embed the verification data to the original document image in an identical scanning direction in a manner of point symmetry with respect to the center point of the original document image and to generate an encoded document image including the verification data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.