Multiple-measurement noise-reducing system
US4463375A · kind A · utility
143Cited by
7References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1982 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Sep 7, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a multiple-measurement system, a weighted sum of the measurements is used to provide a selective image. An additional weighted sum is used to provide an increased signal-to-noise ratio of some desired parameter of the image. The high frequency components of the increased signal-to-noise ratio image are combined with the low frequency components of the selective image to provide a selective image with improved signal-to-noise ratio. The combining operation can utilize the ratios of the derivatives in each signal to provide the correct amount of high frequency signal at each transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.