Image processing apparatus and method
US8160369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Sep 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus for processing a previous image having first pixels and a present image having second pixels. The image processing apparatus includes: a pixel difference calculating unit which calculates pixel differences between corresponding pairs of the first and second pixels, and outputs pixel difference values; an edge processing unit which detects and compares edge types of the first and second pixels, sums a number of the edge types that are the same, and outputs a sum value; a noise level processing unit which calculates a noise level of the present image according to the sum value and the pixel differences; a blending value determining unit which determines a blending value according to the noise level; and an output unit which adds weights of the present and previous images according to the blending value and outputs an output image. An image processing method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.