Second Vanishing Moment Constraints on 2-D GenLOT and Its Directional Design
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- MURAMATSU Shogo
- Dept. of EE Eng., Faculty of Eng., Niigata Univ.
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- ADACHI Atsuyuki
- Dept. of EE Eng., Faculty of Eng., Niigata Univ.
Bibliographic Information
- Other Title
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- 二次元GenLOTの二次バニッシングモーメント制約と指向的設計(通信品質,メディア・インタフェース及び一般)
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Abstract
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 2 × 2-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 × 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.
Journal
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- ITE Technical Report
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ITE Technical Report 32.58 (0), 9-12, 2008
The Institute of Image Information and Television Engineers
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Details 詳細情報について
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- CRID
- 1390282679502674560
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- NII Article ID
- 110007385620
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- NII Book ID
- AN1059086X
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- ISSN
- 24241970
- 13426893
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- NDL BIB ID
- 9780605
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed