All papers are available upon request.
Journal Papers Y. Yazaki, S. Watanabe, and Y. Tanaka, in preparation of submission to IEEE Trans. on Biomedical Engineering.
 A. Sakiyama, K. Watanabe, and Y. Tanaka, in preparation of submission to IEEE Signal Processing Letters.
 M. Onuki, S. Ono, Y. Tanaka, and M. Okuda, in preparation of submission to IEEE Trans. on Signal Processing.
 A. Sakiyama, Y. Tanaka, T. Tanaka, and A. Ortega, in preparation of submission to IEEE Trans. on Signal Processing.
 A. Sakiyama, K. Watanabe, Y. Tanaka, and A. Ortega, "Twochannel criticallysampled graph wavelets with spectral domain sampling," submitted to IEEE Trans. on Signal Processing. Preprint on ArXiv
 Y. Tanaka, "Spectral domain sampling of graph signals," IEEE Trans. on Signal Processing, accepted. MATLAB Code Open Access at IEEE Xplore (Preprint on ArXiv)
 G. Cheung, E. Magli, Y. Tanaka, and M. Ng, "Graph spectral image processing," Proceedings of the IEEE, vol. 106, no. 5, pp. 907930, 2018 (invited paper). Preprint on ArXiv IEEE Xplore
 T. Suzuki, S. Kyochi, Y. Tanaka, and M. Ikehara, "Multiplierless liftingbased fast X transforms derived from fast Hartley transform factorization," Multidimensional Systems and Signal Processing, vol. 29, no. 1, pp. 99118, 2018. Springer
 M. Onuki, S. Ono, K. Shirai, and Y. Tanaka, "Fast singular value shrinkage with Chebyshev polynomial approximation based on signal sparsity," IEEE Trans. on Signal Processing, vol. 65, no. 22, pp. 60836096, 2017. Open Access at IEEE Xplore
 K. Yamamoto, M. Onuki, and Y. Tanaka, "Nonblind deconvolution of point cloud attributes in graph spectral domain," IEICE Trans. on Fundamentals, vol. E100A, no. 9, pp. 17511759, 2017. IEICE
 D. B. H. Tay, Y. Tanaka, and A. Sakiyama, "Almost tight spectral graph wavelets with polynomial filters," IEEE Journal of Selected Topics in Signal Processing, vol. 11, no. 6, pp. 812824, 2017. IEEE Xplore
 A. Hamamoto, M. Onuki, and Y. Tanaka, "Higher order feasible building blocks for lattice structure of multidimensional linear phase biorthogonal filter banks," Multidimensional Systems and Signal Processing, vol. 28, no. 2, pp. 637655, 2017. Springer
 D. B. H. Tay, Y. Tanaka, and A. Sakiyama, "Critically sampled graph filter banks with polynomial filters from regular domain filter banks," Signal Processing, vol. 131, pp. 6672, 2017. Elsevier
 H. Higashi, T. Rutkowski, T. Tanaka, and Y. Tanaka, "Multilinear discriminant analysis with subspace constraints for singletrial classification of eventrelated potentials," IEEE Journal of Selected Topics in Signal Processing, vol. 10, no. 7, pp. 12951305, 2016. Open Access at IEEE Xplore
 A. Sakiyama, K. Watanabe, and Y. Tanaka, "Spectral graph wavelets and filter banks with low approximation error," IEEE Trans. on Signal and Information Processing over Networks, vol. 2, no. 3, pp. 230245, 2016. MATLAB Code Open Access at IEEE Xplore
 S. Yagyu, A. Sakiyama, and Y. Tanaka, "Deforming pyramid: Multiscale image representation using pixel deformation and filters for nonequispaced signals," IEICE Trans. on Fundamentals, vol. E99A, no.9, pp. 16461654, 2016. IEICE
 M. Onuki, S. Ono, M. Yamagishi, and Y. Tanaka, "Graph signal denoising via trilateral filter on graph spectral domain," IEEE Trans. on Signal and Information Processing over Networks, vol. 2, no. 2, pp. 137148, 2016. Preprint Project page IEEE Xplore
 D. B. H. Tay, Y. Tanaka, and A. Sakiyama, "Near orthogonal oversampled graph filter banks," IEEE Signal Processing Letters, vol. 23, no. 2, pp. 277281, 2016. IEEE Xplore
 A. Sakiyama and Y. Tanaka, "Oversampled graph Laplacian matrix for graph filter banks," IEEE Trans. on Signal Processing, vol. 62, no. 24, pp. 64256437, 2014. MATLAB Code Open Access at IEEE Xplore
 M. Onuki and Y. Tanaka, "Design of optimized prefilters for timedomain lapped transforms with various downsampling factors," IEICE Trans. on Fundamentals, vol. E97A, no. 9, pp. 19071917, 2014.
 Y. Tanaka and A. Sakiyama, "Mchannel oversampled graph filter banks," IEEE Trans. on Signal Processing, vol. 62, no. 14, pp. 35783590, 2014. MATLAB Code Open Access at IEEE Xplore
 S. Kyochi and Y. Tanaka, "General factorization of conjugatesymmetric Hadamard transforms," IEEE Trans. on Signal Processing, vol. 62, no. 13, pp. 33793392, 2014. Open Access at IEEE Xplore
 V. H. Le, K. Shinoda, M. Hasegawa, S. Kato, and Y. Tanaka, "Modified highorder edgedirected interpolation for distributed video coding based on selective data pruning," IIEEJ Transactions on Image Electronics and Visual Computing, vol. 2, no. 1, pp. 2636, 2014.
 Y. Tanaka, T. Yoshida, M. Hasegawa, S. Kato, and M. Ikehara, "Ratedependent seam carving and its application to contentaware image coding," APSIPA Trans. on Signal and Information Processing, vol. 2, no. e1, 15 pages, 2013. Open Access Paper
 Y. Tanaka, M. Hasegawa, and S. Kato, "Flexible combination of timedomain lapped transforms with various downsampling factors," IEICE Trans. on Fundamentals, vol. E95A, no. 11, pp. 20492058, 2012.
 Y. Tanaka, M. Hasegawa, S. Kato, M. Ikehara, and T. Q. Nguyen, "Adaptive directional wavelet transform based on directional prefiltering," IEEE Trans. on Image Processing, vol. 19, no. 4, pp. 934945, 2010 (TELECOM System Technology Award). IEEE Xplore pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "Higherorder feasible building blocks for lattice structure of oversampled linearphase perfect reconstruction filter banks," Signal Processing, vol. 89, no. 9, pp. 16941703, 2009. doi:10.1016/j.sigpro.2009.03.005 pdf
 S. Kyochi, S. Higaki, Y. Tanaka, and M. Ikehara, "A bottomup design approach of critically sampled contourlet transform for efficient image representation," IEICE Trans. on Fundamentals, vol. E92A, no. 3, pp.762771, 2009.
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "Multiresolution image representation using combined 2D and 1D directional filter banks," IEEE Trans. on Image Processing, vol. 18, no. 2, pp. 269280, 2009 (ranked # 87 among the top 100 downloaded IEEE Xplore articles in Jan. 2009/ Yasujiro Niwa Outstanding Paper Award). IEEE Xplore pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "A lattice structure of biorthogonal linearphase filter banks with higher order feasible building blocks," IEEE Trans. on Circuits and Systems I: Regular Papers, vol. 55, no. 8, pp. 23222331, 2008. IEEE Xplore pdf
 S. Iwamura, T. Suzuki, Y. Tanaka, and M. Ikehara, "Design of Mchannel perfect reconstruction filter banks with IIRFIR hybrid building blocks," IEICE Trans. on Fundamentals, vol. E90A, no. 8, pp. 16361643, 2007.
International Conferences M. Onuki and Y. Tanaka, in preparation of submission to ICDM 2018, Singapore, Nov. 2018.
 T. Nishikawa and Y. Tanaka, "Dynamic color lines," ICIP 2018, Athens, Greece, Oct. 2018, to be presented.
 Y. Shimizu, S. Ono, and Y. Tanaka, "Design of sampling matrices in graph frequency domain for graph signal processing," ICIP 2018, Athens, Greece, Oct. 2018, to be presented.
 Y. Yazaki, S. Watanabe, and Y. Tanaka, "Automatic detection of tonicclonic seizures in epilepsy based on lowcomplexity video analysis," EMBC 2018, Honolulu, HI, Jul. 2018, to be presented.
 K. Watanabe, A. Sakiyama, Y. Tanaka, and A. Ortega, "Criticallysampled graph filter banks with spectral domain sampling," ICASSP 2018, Calgary, AB, Apr. 2018.
 A. Sakiyama and Y. Tanaka, "Graph reduction method using localization operator and its application to pyramid transform," APSIPA ASC 2017, Kuala Lumpur, Malaysia, Dec. 2017 (Invited paper).
 A. Sakiyama, T. Namiki, and Y. Tanaka, "Design of polynomial approximated filters for signals on directed graphs," GlobalSIP 2017, Montreal, Canada, Nov. 2017.
 T. Nishikawa and Y. Tanaka, "Colors in multimodal data: Dominant line extraction inspired by computer vision techniques," IGARSS 2017, Fort Worth, TX, Jul. 2017.
 T. Ichita, S. Kyochi, T. Suzuki, and Y. Tanaka, "Directional discrete cosine transforms arising from discrete cosine and sine transforms for directional blockwise image representation," ICASSP 2017, New Orleans, LA, Mar. 2017.
 M. Onuki, Y. Tanaka, and M. Okuda, "Improved eigenvalue shrinkage using weighted Chebyshev polynomial approximation," ICASSP 2017, New Orleans, LA, Mar. 2017.
 A. Sakiyama, Y. Tanaka, T. Tanaka, and A. Ortega, "Accelerated sensor position selection using graph localization operator," ICASSP 2017, New Orleans, LA, Mar. 2017.
 Y. Tanaka and A. Sakiyama, "A 'polyphase' structure of twochannel spectral graph wavelets and filter banks," ICASSP 2017, New Orleans, LA, Mar. 2017.
 H. Higashi, T. Rutkowski, T. Tanaka, and Y. Tanaka, "Smoothing of xDAWN spatial filters for robust extraction of eventrelated potentials," APSIPA ASC 2016, Jeju, Korea, Dec. 2016.
 Y. Tanaka, S. Yagyu, A. Sakiyama, and M. Onuki, "Meshbased image retargeting with spectral graph filtering," APSIPA ASC 2016, Jeju, Korea, Dec. 2016.
 A. Sakiyama and Y. Tanaka, "Construction of undersampled graph filter banks via row subset selection," GlobalSIP 2016, Washington, D.C., Dec. 2016.
 M. Onuki and Y. Tanaka, "L1regularized optimization of undersampled prefilters for image coding," PCS 2016, Nuremberg, Germany, Dec. 2016.
 S. Yagyu, A. Sakiyama, and Y. Tanaka, "Pyramidal image representation with deformation: Reformulation of domain transform and filter designs," ICIP 2016, Phoenix, AZ, Sep. 2016.
 K. Yamamoto, M. Onuki, and Y. Tanaka, "Deblurring of point cloud attributes in graph spectral domain," ICIP 2016, Phoenix, AZ, Sep. 2016.
 T. Tanaka, T. Uehara, and Y. Tanaka, "Dimensionality reduction of sample covariance matrices by graph Fourier transform for motor imagery brainmachine interface," SSP 2016, Palma de Mallorca, Spain, Jun. 2016.
 M. Onuki, S. Ono, K. Shirai, and Y. Tanaka, "Image colorization based on ADMM with fast singular value thresholding by Chebyshev polynomial approximation," ICASSP 2016, Shanghai, China, Mar. 2016.
 A. Sakiyama, Y. Tanaka, T. Tanaka, and A. Ortega, "Efficient sensor position selection using graph signal sampling theory," ICASSP 2016, Shanghai, China, Mar. 2016.
 H. Higashi, T. Rutkowski, T. Tanaka, and Y. Tanaka, "Subspaceconstrained multilinear discriminant analysis for ERPbased brain computer interface classification," APSIPA ASC 2015, Hong Kong, Dec. 2015 (Invited Paper, Best Paper Award).
 K. Suwabe, M. Onuki, Y. Iizuka and Y. Tanaka, "Globalized BM3D using fast eigenvalue filtering," GlobalSIP 2015, Orlando, FL, Dec. 2015.
 S. Yagyu, A. Sakiyama and Y. Tanaka, "Edge preserving multiscale image decomposition with customized domain transform filters," GlobalSIP 2015, Orlando, FL, Dec. 2015.
 R. Morita, K. Shirai, and Y. Tanaka, "Performance analysis of retargeting pyramid and its applications," ICIP 2015, Québec City, Canada, Sep. 2015.
 M. Onuki, S. Ono, K. Shirai, and Y. Tanaka, "Nonlocal/local filters using fast eigenvalue filtering for image denoising," ICIP 2015, Québec City, Canada, Sep. 2015.
 A. Sakiyama and Y. Tanaka, "Oversampled bipartite graphs with controlled redundancy," EUSIPCO 2015, Nice, France, Sep. 2015 (Invited Paper).
 A. Sakiyama and Y. Tanaka, "Critically sampled graph wavelets converted from linearphase biorthogonal wavelets," ICASSP 2015, Brisbane, Australia, Apr. 2015.
 M. Onuki and Y. Tanaka, "Tonemapping using graph spectraldomain filters," 2015 Joint Conference of IWAIT and IFMIA, Tainan, Taiwan, Jan. 2015 (Invited Talk).
 H. Higashi, T. Tanaka, and Y. Tanaka, "Smoothing of spatial filter by graph Fourier transform for EEG signals," APSIPA ASC 2014, Siem Reap, Cambodia, Dec. 2014 (Invited Paper, Best Paper Award).
 E. Hosogai and Y. Tanaka, "Iterative edgedirected image upscaling with high directionality," APSIPA ASC 2014, Siem Reap, Cambodia, Dec. 2014.
 A. Hamamoto, M. Onuki, and Y. Tanaka, "Multidimensional linearphase perfect reconstruction filter banks with higher order feasible building blocks," ICIP 2014, Paris, France, Oct. 2014.
 Y. Iizuka and Y. Tanaka, "Depth map denoising using collaborative graph wavelet shrinkage on connected image patches," ICIP 2014, Paris, France, Oct. 2014.
 M. Onuki and Y. Tanaka, "Trilateral filter on graph spectral domain," ICIP 2014, Paris, France, Oct. 2014.
 A. Sakiyama and Y. Tanaka, "Edgeaware image graph expansion methods for oversampled graph Laplacian matrix," ICIP 2014, Paris, France, Oct. 2014.
 A. Sakiyama and Y. Tanaka, "Oversampled graph Laplacian matrix for graph signals," EUSIPCO 2014, Lisbon, Portugal, Sep. 2014.
 Y. Tanaka and A. Sakiyama, "Mchannel oversampled perfect reconstruction filter banks for graph signals," ICASSP 2014, Florence, Italy, May 2014. pdf
 R. Morita, K. Shirai, and Y. Tanaka, "Retargeting pyramid using direct decimation," ICASSP 2014, Florence, Italy, May 2014. pdf
 S. Kyochi, T. Suzuki, and Y. Tanaka, "A twodimensional nonseparable implementation of dyadicvalued cosinesine modulated filter banks for low computational complexity," APSIPA Annual Summit and Conference 2013, Kaohsiung, Taiwan, Oct. 2013 (Invited Paper).
 K. Yamato, M. Hasegawa, K. Shinoda, S. Kato, and Y. Tanaka, "Image restoration using similar region search and digital watermark," APSIPA Annual Summit and Conference 2013, Kaohsiung, Taiwan, Oct. 2013 (Invited Paper).
 M. Onuki and Y. Tanaka, "Design of optimized prefilters for timedomain lapped transforms with various downsampling factors," ICIP 2013, Melbourne, Australia, Sep. 2013. pdf
 H. V. Le, K. Shinoda, M. Hasegawa, S. Kato, and Y. Tanaka, "Selective data pruning based distributed video coding with modified highorder edgedirected interpolation," ICIP 2013, Melbourne, Australia, Sep. 2013. pdf
 Y. Tanaka and K. Shirai, "Scalable image representation using improved retargeting pyramid," ICASSP 2013, Vancouver, Canada, May 2013.
 Y. Miyashita, M. Hasegawa, S. Kato, and Y. Tanaka, "Improved adaptive color embedding and recovery using DC level shifting," ICASSP 2013, Vancouver, Canada, May 2013.
 T. Suzuki, S. Kyochi, Y. Tanaka, M. Ikehara, and H. Aso, "Multiplierless lifting based FFT via fast Hartley transform," ICASSP 2013, Vancouver, Canada, May 2013.
 Y. Tanaka and K. Shirai, "Directional image decomposition using retargeting pyramid," APSIPA Annual Summit and Conference 2012, Hollywood, CA, Dec. 2012 (Invited Paper).
 S. Kyochi, T. Suzuki, and Y. Tanaka, "A directional and shiftinvariant transform based on Mchannel rationalvalued cosinesine modulated filter banks," APSIPA Annual Summit and Conference 2012, Hollywood, CA, Dec. 2012.
 H. V. Le, T. T. Phan, Y. Tanaka, M. Hasegawa, and S. Kato, "Distributed video coding based on selective data pruning and highorder edgedirected interpolation," IIEEJ Image Electronics and Visual Computing Workshop 2012 (IEVC2012), Kuching, Malaysia, Nov. 2012.
 S. Kanahara, M. Hasegawa, S. Kato, and Y. Tanaka, "A fast binary arithmetic coding using probability table of expanded symbols," ISITA 2012, Honolulu, HI, Oct. 2012.
 Y. Miyashita, Y. Tanaka, M. Hasegawa, and S. Kato, "Adaptive colortogray mapping using directional transform," ICIP 2012, Orlando, FL, Sep. 2012.
 K. Yamato, M. Hasegawa, Y. Tanaka, and S. Kato, "Digital image watermarking method using betweenclass variance," ICIP 2012, Orlando, FL, Sep. 2012.
 T. Yoshida, Y. Tanaka, M. Hasegawa, S. Kato, and M. Ikehara, "Waveletbased contentaware image coding with ratedependent seam carving," ICIP 2012, Orlando, FL, Sep. 2012.
 S. Kyochi and Y. Tanaka, "Multiresolution directional image decomposition based on cosinesine modulated filterbank," ITCCSCC 2012, Sapporo, Japan, Jul. 2012 (Invited Paper).
 S. Kyochi, Y. Tanaka, and M. Ikehara, "On factorizations of conjugate symmetric Hadamard transform and its relationship with DCT," ICASSP 2012, Kyoto, Japan, Mar. 2012.
 T. Suzuki, Y. Tanaka, M. Ikehara, H. Aso, "Multiplierless fast algorithm for DCT via fast Hartley transform," ICASSP 2012, Kyoto, Japan, Mar. 2012.
 M. Hoshi, A. Yoshinari, Y. Tanaka, M. Hasegawa, and S. Kato, "Variable block sizebased MCFI with fixed block size motion estimation," 45th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 2011.
 K. Takahashi, M. Hasegawa, Y. Tanaka, and S. Kato, "A structural similarity assessment for generating hybrid images," 45th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 2011.
 T. T. Phan, Y. Tanaka, M. Hasegawa, and S. Kato, "Mixedresolution WynerZiv video coding based on selective data pruning," MMSP 2011, Hangzhou, China, Oct. 2011. pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Generalized selective data pruning for video sequence," ICIP 2011, Brussels, Belgium, Sep. 2011. pdf
 T. Miyachi, K. Takahashi, M. Hasegawa, Y. Tanaka, and S. Kato, "A Study on memorability and shouldersurfing robustness of graphical password using DWTbased image blending," SOUPS 2011, Pittsburgh, PA, Jul. 2011.
 M. Hasegawa, D. Someya, Y. Tanaka, and S. Kato, "A study on user authentication based on arm movements using acceleration sensor," SOUPS 2011, Pittsburgh, PA, Jul. 2011.
 D. Azuma, Y. Tanaka, M. Hasegawa, and S. Kato, "SSIM based image quality assessment applicable to resized images," ITCCSCC 2011, Gyeongju, Korea, Jun. 2011. pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Seam carving with ratedependent seam path information," ICASSP 2011, Prague, Czech Republic, May 2011. pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Flexible combination of timedomain lapped transforms with various downsampling factors," APSIPA Annual Summit and Conference 2010, Singapore, Dec. 2010 (Invited Paper). pdf
 H. Igarashi, Y. Tanaka, M. Hasegawa, and S. Kato, "VQ based data hiding method for still images by treestructured links," PCS 2010, Nagoya, Japan, Dec. 2010. pdf
 T. Miyachi, K. Takahashi, M. Hasegawa, Y. Tanaka, and S. Kato, "A Study on memorability and shouldersurfing robustness of graphical password using DWTbased image blending," PCS 2010, Nagoya, Japan, Dec. 2010. pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Improved image concentration for artifactfree image dilution and its application to image coding," ICIP 2010, Hong Kong, Sept. 2010. pdf (Errata: Instead of D(n)D(n1) and R(n1)R(n) in the original paper, the equation just below (6) should be D(n)/D(n1) and R(n1)/R(n).)
 M. Hasegawa, D. Someya, Y. Tanaka, and S. Kato, "A study on user authentication based on arm movements," ITCCSCC 2010, Pattaya, Thailand, Jul. 2010.
 Y. Tanaka, M. Hasegawa, S. Kato, T. Suzuki, and M. Ikehara, "Direction scalability of adaptive directional wavelet transform: An approach using blocklifting based DCT and SPIHT," ISCAS 2010, Paris, France, May 2010 (Invited Paper). pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Image coding using concentration and dilution based on seam carving with hierarchical search," ICASSP 2010, Dallas, TX, Mar. 2010. pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Image concentration and dilution for video coding," IIEEJ Image Electronics and Visual Computing Workshop 2010 (IEVC2010), Nice, France, Mar. 2010.
 M. Hasegawa, T. Miyachi, Y. Tanaka, and S. Kato, "A graphical password using discrete wavelet transform and its evaluation," IIEEJ Image Electronics and Visual Computing Workshop 2010 (IEVC2010), Nice, France, Mar. 2010.
 N. Tanano, Y. Tanaka, M. Hasegawa, and S. Kato, "Depth order estimation from single still image using frequency characteristics of local regions," IIEEJ Image Electronics and Visual Computing Workshop 2010 (IEVC2010), Nice, France, Mar. 2010.
 Y. Tanaka, M. Hasegawa, and S. Kato, "Texture image retrieval using adaptive directional wavelet transform," ISPACS 2009, Kanazawa, Japan, Dec. 2009 (Invited Paper). pdf
 M. Hasegawa, Y. Tanaka, and S. Kato, "A study on an image synthesis method for graphical passwords," ISPACS 2009, Kanazawa, Japan, Dec. 2009 (Invited Paper). pdf
 Y. Tanaka, M. Hasegawa, S. Kato, M. Ikehara, and T. Q. Nguyen, "Adaptive directional wavelet transform using predirectional filtering," ICIP 2009, Cairo, Egypt, Nov. 2009. pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "An adaptive extension of combined 2D and 1Ddirectional filter banks," ISCAS 2009, Taipei, Taiwan, May 2009. pdf
 Y. Tanaka, M. Hasegawa, and S. Kato, "Highpassfiltering based adaptive directional wavelet transform," PCS 2009, Chicago, IL, May 2009. pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "A new combination of 1D and 2D filter banks for effective multiresolution image representation," ICIP 2008, San Diego, CA, Oct. 2008. pdf
 S. Higaki, S. Kyochi, Y. Tanaka, and M. Ikehara, "A novel design of critically sampled contourlet transform and its application to image coding," ICIP 2008, San Diego, CA, Oct. 2008. pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "Oversampled linearphase perfect reconstruction filter banks with higherorder feasible building blocks: structure and parameterization," ISCAS 2008, Seattle, WA, May 2008. pdf
 J. Aoyama, Y. Tanaka, and M. Ikehara, "A nonexpansive convolution in image coding with smooth extension matrices for NLPPUFBs," 2007 International Workshop on Smart InfoMedia Systems in Bangkok, Bangkok, Thailand, Nov. 2007.
 T. Yoshida, Y. Tanaka, and M. Ikehara, "A generalized lapped transform with unequal length filters based on firstorder linearphase filter banks," 41st Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 2007. pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "A lattice structure of biorthogonal linearphase filter banks with higherorder feasible building blocks," EUSIPCO 2007, Poznan, Poland, Sept. 2007. pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "A simplified lattice structure of firstorder linearphase filter banks," EUSIPCO 2007, Poznan, Poland, Sept. 2007. pdf
 S. Kyochi, Y. Tanaka, and M. Ikehara, "A novel image coding scheme by using twochannel complexvalued filter banks," EUSIPCO 2007, Poznan, Poland, Sept. 2007. pdf
 Y. Tanaka, M. Ikehara, and T. Q. Nguyen, "Unequal length firstorder linearphase filter banks for efficient image coding," ICIP 2007, San Antonio, TX, Sept. 2007. pdf
 S. Iwamura, Y. Tanaka, and M. Ikehara, "An efficient lifting structure of biorthogonal filter banks for lossless image coding," ICIP 2007, San Antonio, TX, Sept. 2007. pdf
 T. Suzuki, Y. Tanaka, and M. Ikehara, "Liftingbased paraunitary filterbanks for lossy/lossless image coding," EUSIPCO 2006, Florence, Italy, Sept. 2006. pdf
 S. Iwamura, T. Suzuki, Y. Tanaka, and M. Ikehara, "Design of Mchannel perfect reconstruction filterbanks with IIRFIR hybrid building blocks," EUSIPCO 2006, Florence, Italy, Sept., 2006. pdf
 S. Kyochi, Y. Tanaka, and M. Ikehara, "Theory and design of twochannel complex linearphase pseudoorthogonal filterbanks," ICASSP 2006, Toulouse, France, May, 2006. pdf
 Y. Tanaka, A. Ochi, and M. Ikehara, "A nonexpansive convolution for nonlinearphase paraunitary filter banks and its application to image coding," 39th Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Oct., 2005. pdf
 Y. Tanaka, A. Ochi, and M. Ikehara, "Design of unequallength linearphase filter banks without redundancy," EUSIPCO 2005, Antalya, Turkey, Sept., 2005. pdf
 Y. Tanaka, "Recent advances in signal processing on graphs," IEICE Fundamentals Review, vol. 8, no. 1, pp. 1529, 2014. (Invited Paper, in Japanese). Open Access at JSTAGE
 Y. Tanaka, Y. Yazaki, and S. Watanabe, Japanese Patent Application No. 201824355, Feb. 2018.
Journal Papers (Japanese)  S. Kanahara, M. Hasegawa, K. Shinoda, S. Kato, and Y. Tanaka, "Study on fast binary arithmetic coding using source expansion," IIEEJ Transactions, vol. 44, no. 3, pp. 464473, 2015.
 K. Yamato, M. Hasegawa, K. Shinoda, S. Kato, and Y. Tanaka, "Image restoration based on embedding of similar region information," IEICE Trans. on Information and Systems, vol. J97D, no. 4, pp. 857867, 2014.
 K. Yamato, M. Hasegawa, Y. Tanaka, and S. Kato, "Digital image watermarking using betweenclass variance," IIEEJ Transactions, vol. 41, no. 5, pp.560567, 2012.
 T. Miyachi, Y. Tanaka, M. Hasegawa, and S. Kato, "A study on a graphical password using a feature of human visual system," IEICE Trans. on Information and Systems, vol. J94D, no.9, pp. 15131521, 2011.
 M. Hasegawa, Y. Tanaka, S. Kato, "A consideration on calculation of SNR for color image signals," IIEEJ Transactions, vol. 40, no. 3, pp. 475479, 2011.
 S. Iwamura, Y. Tanaka, and M. Ikehara, "Block lifting factorization based biorthogonal filter banks and its application for lossytolossless image coding," IEICE Trans. on Fundamentals, vol. J91A, no. 12, pp. 11811189, 2008.
 S. Kyochi, Y. Tanaka, and M. Ikehara, "Twochannel complexvalued pseudoorthogonal filter banks," IEICE Trans. on Fundamentals, vol. J91A, no. 4, pp. 458467, 2008.
 Y. Tanaka and M. Ikehara, "Firstorder linearphase filter banks with regularity constraints for efficient image coding," IEICE Trans. on Fundamentals, vol. J91A, no. 2, pp. 192201, 2008.
 T. Suzuki, Y. Tanaka, and M. Ikehara, "Liftingbased paraunitary filterbanks for lossy/lossless image coding," IEICE Trans. on Fundamentals, vol. J89A, no. 11, pp. 950959, 2006.
 Y. Tanaka, A. Ochi, and M. Ikehara, "Design of unequallength linearphase filter banks without redundancy," IEICE Trans. on Fundamentals, vol. J88A, no.9, pp. 10351044, 2005.
 Y. Tanaka, A. Ochi, and M. Ikehara, "A nonexpansive convolution for nonlinearphase paraunitary filter banks and its application in image coding," IEICE Trans. on Fundamentals, vol. J88A, no. 7, pp. 814821, 2005.

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