Method for reducing image disturbances caused by reconstructed defective pixels in direct radiography
US10726527B2 · kind B2 · utility
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Key dates
| Filing date | Sep 20, 2016 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jan 21, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for removing defective pixel image-artifacts includes an adaptive reconstruction kernel taking up to four main and diagonal, defect-free sub-kernel directions into account composed for each defective image pixel. The defective pixels impacted image is real-time corrected by statistical filtering or by a weighed directional convolution of kernel-associated replacement values, calculated by means of an advanced multi-parabolic reconstruction algorithm, for each contributing sub-kernel direction based on 5×5 pixels neighborhood image data readily accessible via a predetermined AMP kernels image-offsets structure.
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