Method and device for correcting image
US11727546B2 · kind B2 · utility
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9References
20Claims
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Key dates
| Filing date | Mar 9, 2022 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Mar 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30164
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for correcting an image includes: orthographically correcting an image; removing a curtain artifact by applying a first filter to the orthographically corrected image; correcting brightness of the image, from which the curtain artifact is removed, by applying a second filter to the image, from which the curtain artifact is removed. The first filter includes a first function and a second function for a first domain and a second domain, which are orthogonal to each other in a frequency region, and the first filter is differentiable and continuous in the first domain and the second domain.
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