Pixel signal processing apparatus and pixel signal processing method
US7719575B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2004 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Mar 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A regression analysis is carried out (8) using pixel signals having a K-th spectral characteristic as the explanatory variable and pixel signals having an L-th spectral characteristic as the purpose variable in a plurality of pixel positions in an area neighboring a pixel of interest to obtain a pixel signal having the L-th spectral characteristic (9). Pixel signals obtained by low-pass filtering (7a-7c) of the output signals of an imaging device may be used as the explanatory variable and the purpose variable. The occurrence of false colors is thereby reduced when, in a group of pixel signals from pixels arrayed on a two-dimensional plane, each pixel having one of a plurality of spectral characteristics, the missing colors at each pixel position are obtained by interpolation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.