Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2000.07a
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- Pages.46-49
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- 2000
AN ITERATIVE DEBLOCKING METHOD USING 2-D DIRECTIONAL EIR FILTERS
- Tanaka, Toshihisa (School of Science and Engineering, Tokyo Institute of Technology) ;
- Yamashita, Yukihiko (School of Science and Engineering, Tokyo Institute of Technology)
- Published : 2000.07.01
Abstract
An iterative deblocking algorithm for DCT-compressed images using two-dimensional FIR filters adapted for local directionality of each block, is proposed. First, we introduce a set of simple lowpass filters, which are adapted for edges of different angles. In conventional deblocking methods based on lowpass-filtering and convex projections, a single filter is applied to a whole image. In the proposed method, on the other hand, a suitable filter is chosen out of the directional filters designed previously in every subimage (typically
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