Calibration method for video image reproduction with electronic printer and video monitor
US5369499A · kind A · utility
15Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1991 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Nov 13, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4078
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique for calibrating a cathode ray tube multiformat camera and a video monitor. A video image is corrected on a pixel-by-pixel basis and a gray scale is produced on a photosensitive medium, such as film, and on a monitor with uniform quantization in perceived lightness (i.e., perceived lightness or gray shade varies linearly with digital image code value). Consequently, there is no loss of small-signal and strong-signal structures (detail), and all the image information is recorded on film and clearly displayed on the monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.