Noise reduction in image domain for spectral computed tomography
US9330443B1 · kind B1 · utility
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Key dates
| Filing date | Feb 13, 2015 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computed tomography (CT) imaging system is provided including processing circuitry configured to obtain a plurality of basis images that are combined to generate a target image; de-noise the basis images using a noise-reduction method to generate de-noised basis images; calculate noise maps of the basis images by subtracting the de-noised basis images from the basis images; calculate a weight for each of the noise maps using the target image and the calculated noise maps; and generate a reduced-noise target image using the target image, the calculated noise maps, and the calculated weights.
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