Bad pixel column processing in a radiation detection panel
US6118846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1999 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Feb 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and associated apparatus for performing defective pixel correction in a radiation detector having a plurality of radiation sensors arrayed in rows and columns. The process and associated apparatus are specifically directed to correcting defects consisting of a plurality of adjacent pixels arrayed along and connected to a common electrode forming a bad pixel line. The pixel correction is accomplished by identifying the bad pixel line, forming a window of a plurality of pixel lines co-extending along the bad pixel line; identifying a limited number of adjacent pixel lines adjacent to the bad pixel line as also being bad pixel lines; preferably subdividing the window pixels into smaller windows along the bad pixel line, deriving correction coefficients for all bad line pixels in each subdivision from the good pixels in each subdivision and using the correction coefficients to correct the pixels in both the original bad line and in the adjacent bad pixel lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.