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A MULTI-FRAME BLOCKING ARTIFACT REDUCTION METHOD FOR TRANSFORM-CODED VIDEO
 

Summary: A MULTI-FRAME BLOCKING ARTIFACT REDUCTION METHOD FOR
TRANSFORM-CODED VIDEO
Bahadir K. Gunturk, Yucel Altunbasak, and Russell Mersereau
Center for Signal and Image Processing
Georgia Institute of Technology
Atlanta, GA 30332-0250
ABSTRACT
A major drawback of block-based still image or video com-
pression methods at low rates are the visible block boundaries
that are also known as blocking artifacts. Several methods have
been proposed in the literature to reduce these artifacts for video
sequences. However, most are simply adaptations of still image
blocking artifact reduction methods, which do not exploit tempo-
ral information. In this paper, we propose a novel multi-frame
blocking artifact reduction method that incorporates temporal in-
formation effectively. This method uses the spatial correlations
that exist between the successive frames to define constraint sets
at multiple frames and provides a Projections Onto Convex Sets
(POCS) solution. The proposed method operates solely on trans-
form domain (DCT) data, and hence provides a solution that is

  

Source: Altunbasak, Yucel - School of Electrical and Computer Engineering, Georgia Institute of Technology

 

Collections: Engineering