Radiation image processing method which increase and decreases a frequency region of the radiation image
US5493622A · kind A · utility
31Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Mar 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/325
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of reproducing a radiographic image of a subject includes processing radiographic image signals which indicates a signal level corresponding to an amount of radioactive rays transmitted through each portion of the subject. The method compresses a signal level range of a part of the low frequency region of the radiographic image signals and expands a signal level range of another part of the low frequency region of the radiographic image signals, thereby obtaining image signals that are usable to reproduce the radiographic image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.