Design of 2D directional adaptive filter banks and its application to image coding

二维方向自适应滤波器组设计及其在图像编码中的应用

• 批准号: 21560412
• 负责人: IKEHARA Masaaki
• 金额: $ 2.5万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560412/
• 关键词: 信号処理; 画像符号化; 2次元フィルタバンク; 方向適応型ウエーブレット変換; 画像圧縮; リフティング構造; フィルタバン; 多次元信号処理; フィルタバンク

In this research, we propose a two dimensional(2D) non-separable adaptive directional lifting(ADL) structure for discrete wavelet transform(DWT) and its image coding application. Although a 2D non-separable lifting structure of 9/7 DWT has been proposed by interchanging some lifting, we generalize a polyphase representation of 2D non-separable lifting structure of DWT. Furthermore, by introducing the adaptive directional filteringing to the generalized structure, the 2D non-separable ADL structure is realized and applied into image coding. Our proposed method is simpler than the 1D ADL, and can select the different transforming direction with 1D ADL. Through the simulations, the proposed method is shown to be efficient for the lossy and lossless image coding performance.

在本研究中，我们提出一个二维不可分离的自适应方向提升离散小波变换（DWT）结构及其在图像编码中的应用。虽然已经提出了一个二维不可分离的提升结构的9/7 DWT通过互换一些提升，我们推广了二维不可分离的提升结构的DWT的多相表示。在此基础上，通过引入自适应方向滤波，实现了二维不可分ADL结构，并将其应用于图像编码中。我们提出的方法比一维ADL简单，并且可以选择与一维ADL不同的变换方向。仿真结果表明，该方法对有损和无损图像编码性能都是有效的。

项目成果

Integer DCT Based on Direct-Lifting of DCT-IDCT for Lossless-to-Lossy Image Coding

• DOI: 10.1109/tip.2010.2051867
• 发表时间: 2010-11
• 期刊: IEEE Transactions on Image Processing
• 影响因子: 10.6
• 作者: Taizo Suzuki;M. Ikehara

Realization of IntDCT with arbitrary block size using relation between DCT-IV and parallel block system of DCT-II

利用DCT-IV和DCT-II并行块系统之间的关系实现任意块大小的IntDCT

• 发表时间: 2010
• 期刊: Journal of Signal Processing
• 作者: Hironobu Kanemitsu;et al.;Taizo Suzuki;Taizo Suzuki
• 通讯作者: Taizo Suzuki

Image interpolation using cosine-sine modulated filter bank

• DOI: 10.1109/lascas.2010.7410128
• 发表时间: 2010-02
• 期刊: 2010 First IEEE Latin American Symposium on Circuits and Systems (LASCAS)
• 作者: S. Iwamura;Seisuke Kyochi;M. Ikehara;Naoto Kaneko

Multiresolution Image Representation Using Combined 2-D and 1-D Directional Filter Banks

• DOI: 10.1109/tip.2008.2008078
• 发表时间: 2009-02
• 期刊: IEEE Transactions on Image Processing
• 影响因子: 10.6
• 作者: Yuichi Tanaka;M. Ikehara;Truong Q. Nguyen

Integer fast lapped orthogonal transform based on direct-lifting of DCTs for lossless-to-lossy Image coding

基于直接提升 DCT 的整数快速重叠正交变换用于无损到有损图像编码

• 发表时间: 2011
• 作者: Keiichiro Shirai;Masaaki Ikehara;and Masayuki Okamoto;Kazu Mishiba and Masaaki Ikehara;Taizo Suzuki and Masaaki Ikehara
• 通讯作者: Taizo Suzuki and Masaaki Ikehara