Method of correcting a radiation image for defects in the recording member
US5832055A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method of correcting a radiation image for defects in the recording member. Defects in a member for recording a radiation image are corrected by generating a calibration matrix comprising for each pixel a correction value and by applying corresponding elements of the calibration matrix to the pixels of a recorded image. The values of the calibration matrix represent in each pixel the deviation of the value that is effectively obtained in a pixel when the recording member is subjected to a flat field exposure and the value that would be expected in the pixel. Different methods are described for determining the expected value in a pixel. Further, an overlay image is generated wherein local defects are visualised.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.