Pixel interpolation apparatus, imaging apparatus, pixel interpolation processing method, integrated circuit, and non-transitory computer readable storage medium
US9225948B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 2013 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jul 5, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel interpolation apparatus, an imaging apparatus, a program, and an integrated circuit allow appropriate pixel interpolation processing on an image signal obtained by a single-chip image sensor having a WRGB color filter array. An imaging apparatus includes an imaging unit, a signal processing unit, and a pixel interpolation processing unit. The apparatus calculates a degree of correlation for pairs in two orthogonal directions for an image signal (Raw image) obtained by the imaging unit including a single-chip image sensor having a WRGB color filter array using pixel data in an area around a target pixel, using the correlation degree as a determination criterion in the interpolation processing. The imaging apparatus selectively uses a luminance signal generated from R, G, and B-component signals or a luminance signal generated from a W-component signal to perform pixel interpolation processing with higher accuracy and obtain a YCbCr signal with higher accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.