Patent · US Active

Auto-regressive method and filter for denoising images and videos

US7657113B2 · kind B2 · utility

6Cited by

3References

8Claims

0Family size

Assignee

Hong Kong Applied Science and Technology Research Institute Company Limited · CN

Inventors

Hon Wah Wong · Sha Tin, CN
Andy Chang · San Jose, US

Key dates

Filing date	Dec 21, 2005
Grant date	Feb 2, 2010
Priority date	—
Expiry date	Mar 11, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG06V10/30
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus for denoising digital images or videos, which is an extension of the spatial varying filter (SVF) by using a past filtered pixel, instead of the current pixel itself as the input for producing an output for the current pixel. Based on this concept, a number of denoising filters are provided, including Auto-regressive Spatial Varying Filter (ARSVF), Modified Auto-regressive Spatial Varying Filter (MARSVF), Auto-Regressive Spatiotemporal Varying Filter (ARSTVF) which is an extension of Spatiotemporal Varying Filter (STVF), Auto-regressive Motion Compensated Spatiotemporal Varying Filter (ARMCSTVF) which is extension of Motion Compensated Spatiotemporal Varying Filter (MCSTVF), and Selective Auto-regressive Motion Compensated Spatiotemporal Varying Filter (SARMCSTVF).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.