Electronic endoscope system with color-balance alteration process
US6967673B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2002 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Sep 14, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/0638
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic endoscope system includes a video scope having a solid-state image sensor for successively producing a frame of color image-pixel signals, and an image-signal processor for producing a color video signal based on the frame of color image-pixel signals. A calculation system calculates a difference value between a value of a central single-color image-pixel signal and an average of values of one selected from single-color image-pixel signals surrounding the central single-color image-pixel signal. A color-balance alteration system alters the value of the central single-color image-pixel signal based on the difference value calculated by the calculation system. A selection system performs the selection of the circumferential image-pixel signals such that the circumferential image-pixel signals to be selected are farther from the central image-pixel signal, as a spatial frequency of an endoscope image to be reproduced based on the color video signals is lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.