Image processing technique using high frequency data analysis to filter low frequency data by dynamic kernel adjustment
US9582861B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Jun 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method includes separating image data into high frequency image data and low frequency image data. The high frequency image data is separated into windows, with each window containing pixels. The low frequency image data is separated into windows corresponding respectively to the plurality of windows of the high frequency image data, with each window containing pixels. For each window in the high frequency image data, a number of textured pixels in the window is determined, the textured pixels being pixels that vary greatly in luminance value with respect to other pixels in the window, and a window modification is determined such that the number of textured pixels in the window is reduced. For each corresponding window in the low frequency image data, the window modification is applied, and each textured pixel in the window is corrected based upon the other pixels in the window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.