Akira HIRABAYASHI


Toward Large-Pixel Number High-Speed Imaging Exploiting Time and Space Sparsity
Naoki NOGAMI Akira HIRABAYASHI Takashi IJIRI Jeremy WHITE 
Publication:   
Publication Date: 2017/06/01
Vol. E100-A  No. 6  pp. 1279-1285
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
high-speed camerasparsitycompressed sensingimage completionconvex optimization
 Summary | Full Text:PDF(1.9MB)

High-Quality Recovery of Non-Sparse Signals from Compressed Sensing — Beyond l1 Norm Minimization —
Akira HIRABAYASHI Norihito INAMURO Aiko NISHIYAMA Kazushi MIMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/09/01
Vol. E98-A  No. 9  pp. 1880-1887
Type of Manuscript:  Special Section PAPER (Special Section on Signal Processing for Sensing and Diagnosis)
Category: 
Keyword: 
sparse signalscompressible signalscompressed sensingl1-norm minimizationlasso
 Summary | Full Text:PDF(1.6MB)

Complex Approximate Message Passing Algorithm for Two-Dimensional Compressed Sensing
Akira HIRABAYASHI Jumpei SUGIMOTO Kazushi MIMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2391-2397
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Image Processing
Keyword: 
compressed sensingtwo-dimensional signalapproximate message passing
 Summary | Full Text:PDF(823.9KB)

Sampling Signals with Finite Rate of Innovation and Recovery by Maximum Likelihood Estimation
Akira HIRABAYASHI Yosuke HIRONAGA Laurent CONDAT 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/10/01
Vol. E96-A  No. 10  pp. 1972-1979
Type of Manuscript:  Special Section PAPER (Special Section on Sparsity-aware Signal Processing)
Category: 
Keyword: 
signals with finite rate of innovationsequence of Diracsderivatives of Diracspiecewise polynomialsmaximum likelihood estimationCadzow denoising
 Summary | Full Text:PDF(1.1MB)

Consistent Sampling and Signal Reconstruction in Noisy Under-Determined Case
Akira HIRABAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/03/01
Vol. E95-A  No. 3  pp. 631-638
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
consistent sampling theoremundersamplingminimum variance property
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Sampling and Reconstruction of Periodic Piecewise Polynomials Using Sinc Kernel
Akira HIRABAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/01/01
Vol. E95-A  No. 1  pp. 322-329
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
piecewise polynomialsstream of Diracsfinite rate of innovation (FRI) signalsannihilating filter
 Summary | Full Text:PDF(730.4KB)

Fast Surface Profiling by White-Light Interferometry Using Symmetric Spectral Optical Filter
Akira HIRABAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/02/01
Vol. E93-A  No. 2  pp. 542-549
Type of Manuscript:  PAPER
Category: Measurement Technology
Keyword: 
surface profilingwhite-light interferometryin-phase componentsymmetric spectral distributionquadrature sampling
 Summary | Full Text:PDF(416.6KB)

Image Magnification by a Compact Method with Preservation of Preferential Components
Akira HIRABAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/08/01
Vol. E90-A  No. 8  pp. 1534-1541
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from the 21st Symposium on Signal Processing)
Category: 
Keyword: 
image enhancementimage reconstructioninterpolation
 Summary | Full Text:PDF(298.5KB)

Realization of Admissibility for Supervised Learning
Akira HIRABAYASHI Hidemitsu OGAWA Akiko NAKASHIMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/05/25
Vol. E83-D  No. 5  pp. 1170-1176
Type of Manuscript:  PAPER
Category: Biocybernetics, Neurocomputing
Keyword: 
supervised learninggeneralizationtraining errorover-fittingadmissibility
 Summary | Full Text:PDF(377.7KB)

Admissibility of Memorization Learning with Respect to Projection Learning in the Presence of Noise
Akira HIRABAYASHI Hidemitsu OGAWA Yukihiko YAMASHITA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1999/02/25
Vol. E82-D  No. 2  pp. 488-496
Type of Manuscript:  PAPER
Category: Bio-Cybernetics and Neurocomputing
Keyword: 
feedforward neural networkgeneralizationtraining errorover-learningadmissibility
 Summary | Full Text:PDF(315.3KB)