Performing deblocking on pixel data

Details Performing deblocking on pixel data Performing deblocking on pixel data

2011-07-19

2011-07-19

Le, Vu (Department: 2624)

Image analysis

Image enhancement or restoration

Edge or contour enhancement

C382S232000, C382S269000, C382S274000, C382S275000, C348S014130, C348S441000, C348S446000, C386S353000

Reexamination Certificate

active

07983505

ABSTRACT:
In one embodiment, the present invention includes a method for receiving pixel data for a portion of an image including a blocking artifact, calculating an artifact strength based on a difference between a two pixels on opposite sides of the blocking artifact, performing a local adaptability check using the artifact strength and values multiple pixels on the opposite sides, performing deblocking based on a result of the local adaptability check, applying a soft threshold to the artifact strength to adjust a value of the artifact strength, and re-aligning one or more pixels on the opposite sides based on the original value of the pixels and a pixel index value. Other embodiments are described and claimed.

REFERENCES:
patent: 2003/0026478 (2003-02-01), Jones et al.
patent: 2003/0053702 (2003-03-01), Hu
patent: 2003/0095203 (2003-05-01), MacInnis et al.
patent: 2003/0128280 (2003-07-01), Perlmutter et al.
patent: 2006/0251174 (2006-11-01), Caviedes et al.
U.S. Appl. No. 11/239,946, filed Sep. 30, 2005, entitled “Method and System for Detecting and Deblocking Variable-Size Grid Artifacts in Coded Video,” by Walid S. Ali, et al.
U.S. Appl. No. 11/238,710, filed Sep. 29, 2005, entitled “Method and Apparatus for Blocking Artifact Detection and Measurement in Block-Coded Video,” by Jorge E. Caviedes, et al.

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