Method for reducing blocking artifacts

Details Method for reducing blocking artifacts Method for reducing blocking artifacts

2002-09-05

2008-09-16

Bella, Matthew C (Department: 2624)

Image analysis

Image enhancement or restoration

Edge or contour enhancement

C382S232000, C382S275000, C348S403100, C348S420100, C348S607000, C358S463000, C375S240240, C375S240270, C375S240290

Reexamination Certificate

active

07426315

ABSTRACT:
A method for removing blocking artifacts from moving and still pictures, comprising classifying horizontal and vertical boundaries in each picture as blocky or non-blocky; for each blocky boundary, defining an adaptive, picture content-dependent, one-dimensional filtered pixels region of interest (ROI) that crosses the boundary and is bound at each of its ends by a bounding pixel; defining a finite filter having a length correlated with the length of the ROI; defining a filtering pixels expansion that uniquely determines the padding values of the finite length filtered pixels ROI for the finite length filtering; and filtering the ROI pixels using the finite filter and the filtering expansion.

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