Pixel defect removing circuit for solid-state image pickup device
US5327246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Jan 23, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/683
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
From an input video signal, a pixel value of a pixel of notice noted at a certain time t and a proximal pixel group adjacent two-dimensionally around the pixel of notice are sampled, and maximum and minimum values from the proximal pixel value group are selected as candidate pixel values. By performing a specific operation between the pixel value of the pixel of notice and the candidate pixel value group, a judgment is made as to whether a pulse noise is contained in the pixel of notice. On the basis of the judgement, a pixel value is selected from among the pixel value of the pixel of notice and the candidate pixel values and delivered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.