Auto-regressive method and filter for denoising images and...

Details Auto-regressive method and filter for denoising images and... Auto-regressive method and filter for denoising images and...

2005-12-21

2010-02-02

Bhatnagar, Anand (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C348S618000

Reexamination Certificate

active

07657113

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).

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International Search Report dated Mar. 29, 2007 for PCT/CN2006/003462 in 4 pages (which corresponds to U.S. Appl. No. 11/313,421).

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