Noise processing apparatus and noise processing method
US11037273B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2019 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Jul 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A noise processing apparatus and a noise processing method capable of increasing cost-performance in the case of performing a noise reducing process for each band using a multiresolution transform and adding a desired noise are provided. The noise processing apparatus includes a multiresolution transform unit (32) that generates a plurality of band images in different resolutions by performing a multiresolution transform process including image size reduction on an original image, a noise reducing unit (34) that performs a noise reducing process on the band image, and a reverse multiresolution transform unit (38) that generates an output image in the same resolution as the original image by performing a reverse multiresolution transform process including image size expansion and a noise addition process on the band image subjected to the noise reducing process, the reverse multiresolution transform unit (38) performing the noise addition process in a lower resolution than the original image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.