Image processing apparatus capable of preventing deterioration in image quality
US5299029A · kind A · utility
17Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1991 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/3935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus capable of contracting or enlarging an original image includes a variable scale magnification processing unit for magnifying the original image in accordance with a magnification m, and a digital filter for correcting an image quality. Since weighting matrixes h1-h5 of the digital filter are varied depending on magnification m, a deterioration in image quality can be prevented irrespectively of magnifications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.