Video display device, video encoder, noise level estimation module and methods for use therewith
US7667776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jan 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A noise level estimation module includes a pixel block selection module for selecting a plurality of selected pixel blocks over a set of K fields of a video signal, each of the plurality of selected pixel blocks containing a plurality of pixels having corresponding pixel values. A difference calculation module calculates a block difference for each of the plurality of selected pixel blocks based on a pixel difference between the pixel value for each of the plurality of pixels and a pixel value for a corresponding pixel in an adjacent field. A signal generator generates a noise level estimation signal based on a subset of M block differences for the plurality of pixel blocks, wherein M is greater than one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.