Automatic color gain adjustments
US6979295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Dec 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8981
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for automatically adjusting color gain of an ultrasound image. Image data passes through a wall filter and is processed into a time-gain compensation curve. Values of the time-gain compensation curve are multiplied with corresponding image data values to compensate for attenuation of image data values with increasing depth in a patient. The values used to generate the time-gain compensation curve may be averaged to reduce localized gain variations and produce an image with smoother intensity transitions. To reduce the effect of a time-gain compensation curve on overall system gain, values of the time-gain compensation curve may be scaled to produce equalized values for the time-gain compensation curve. Values of the time-gain compensation curve may be used to adjust front end gain of an ultrasound system to bring the front end gain within a few decibels of noise floor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.