Using separate coefficients to weight and add separate images together from a spatial filter process
US8428386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2008 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Feb 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A local density calculation section calculates a density of a pixel region with a predetermined size including a current point of an input image disposed at the center on the basis of a pixel value of the pixel region. A mixing ratio calculation section generates a coefficient set of coefficients α and β in accordance with a local density value calculated by the local density calculation section, and outputs the generated coefficients α and β to a weight process section. The weight process section multiplies an operation result obtained from the input image by a first filter operation section by the coefficient α, multiplies an operation result obtained from the input image by a second filter operation section by the coefficient β, adds the multiplied results to each other and outputs the result of addition as a process result of a spatial filter process section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.