Methods and apparatuses for adaptive loop filtering for...

Details Methods and apparatuses for adaptive loop filtering for... Methods and apparatuses for adaptive loop filtering for...

2005-01-14

2009-06-23

Johns, Andrew W (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S268000

Reexamination Certificate

active

07551793

ABSTRACT:
A loop filtering method and apparatus are provided. The loop filtering method includes: calculating blocking effect strength based on coding type information, which specifies the coding type of a block to be filtered, a motion vector of the block, and reference frame information, which identifies a reference frame; determining a filtering unit to be used for filtering the block based on the calculated blocking effect strength; and performing filtering on the block using the determined filtering unit. Accordingly, it is possible to provide high-quality HDTV images by determining whether to perform loop filtering and adjusting the degree of loop filtering in consideration of the characteristics of HDTV images.

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