Streak removal filtering method and apparatus
US5065444A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1991 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Jan 15, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A filter for decreasing sensor artifacts in an image frame as, for instance, sensor induced streaking in the image frame, has a frame buffer for temporary storing the picture elements of the image frame. A picture element mask is utilized to group related picture elements and statistics are collected with respect to these grouped picture elements. Correction parameters are determined utilizing these statistics and these are then utilized to correct the individual picture elements to remove the sensory induced artifacts. The statistics can be collected with respect to picture element gain and picture element offset with the correction parameters then determined utilizing the picture element gain and picture element offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.