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Paper Abstract and Keywords
Presentation 2008-12-18 13:50
Second Vanishing Moment Constraints on 2-D GenLOT and Its Directional Design
Shogo Muramatsu, Atsuyuki Adachi (Niigata Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) This work proposes a novel design method of 2-D non-separable linear-phase paraunitary filter banks (LPPUFB). Especially the two-degree vanishing moment constraint is derived for the lattice structure. In the 2x2-decomposition case, the authors have already derived the constraint and designed non-separable symmetric orthonormal wavelets with vanishing moments of degree two. This work extends the discussion to more general 2m_y x 2m_x-decomposition case and yields a method to impose the condition to the lattice structure. The constraint is imposed directly on design parameters so that both of the linear-phase and paraunitary property are structurally guaranteed. Since the structure adopted in this work is based on the 2-D separable DCT, 2-D separable GenLOT, a popular lattice structure of DCT-based LPPUFB, is regarded as a special case. The main advantage of non-separable systems is the directional capability. This work allows us to obtain directional non-separable LOT with two-degree vanishing moments. Some design examples are shown to verify the significance of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Picture coding / DCT / GenLOT / Vanishing moments / Directionality / Non-separable transforms / /  
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Conference Information
Committee ME IEICE-BS  
Conference Date 2008-12-18 - 2008-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Niigata Univ. 
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Paper Information
Registration To ME 
Conference Code 2008-12-ME-BS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Second Vanishing Moment Constraints on 2-D GenLOT and Its Directional Design 
Sub Title (in English)  
Keyword(1) Picture coding  
Keyword(2) DCT  
Keyword(3) GenLOT  
Keyword(4) Vanishing moments  
Keyword(5) Directionality  
Keyword(6) Non-separable transforms  
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1st Author's Name Shogo Muramatsu  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Atsuyuki Adachi  
2nd Author's Affiliation Niigata University (Niigata Univ.)
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Date Time 2008-12-18 13:50:00 
Presentation Time 25 minutes 
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