Image Denoising for Signal-Dependent Noise. - Keigo Hirakawa; Thomas W. Parks (ICASSP (2), 2005)

Chromatic adaptation and white-balance problem. - Keigo Hirakawa; Thomas W. Parks (ICIP (3), 2005)

Adaptive homogeneity-directed demosaicing algorithm. - Keigo Hirakawa; Thomas W. Parks (IEEE Trans. Image Process., 2005)

An Empirical Bayes Em-Wavelet Unification for Simultaneous Denoising, Interpolation, and/Or Demosaicing. - Keigo Hirakawa; Xiao-Li Meng (ICIP, 2006)

Joint demosaicing and denoising. - Keigo Hirakawa; Thomas W. Parks (IEEE Trans. Image Process., 2006)

Image denoising using total least squares. - Keigo Hirakawa; Thomas W. Parks (IEEE Trans. Image Process., 2006)

A Framework for wavelet-Based Analysis and Processing of Color Filter Array Images with Applications to Denoising and Demosaicing. - Keigo Hirakawa; Xiao-Li Meng; Patrick J. Wolfe (ICASSP (1), 2007)

Spatio-Spectral Color Filter Array Design for Enhanced Image Fidelity. - Keigo Hirakawa; Patrick J. Wolfe (ICIP (2), 2007)

Fourier Domain Display Color Filter Array Design. - Keigo Hirakawa; Patrick J. Wolfe (ICIP (3), 2007)

Beyond the "Bag of Pixels" Paradigm: Spatio-Spectral Perspective in Multispectral Imaging. - Keigo Hirakawa (CGIV/MCS, 2008)

Color constancy beyond bags of pixels. - Ayan Chakrabarti; Keigo Hirakawa; Todd E. Zickler (CVPR, 2008)

Effective separation of sparse and non-sparse image features for denoising. - Ayan Chakrabarti; Keigo Hirakawa (ICASSP, 2008)

Fourier and filterbank analyses of signal-dependent noise. - Keigo Hirakawa (ICASSP, 2008)

Advancing the digital camera pipeline for mobile multimedia: Key challenges from a signal processing perspective. - Keigo Hirakawa; Patrick J. Wolfe (ICASSP, 2008)

Cross-talk explained. - Keigo Hirakawa (ICIP, 2008)

Spatio-Spectral Color Filter Array Design for Optimal Image Recovery. - Keigo Hirakawa; Patrick J. Wolfe (IEEE Trans. Image Process., 2008)

Wavelet-based Poisson rate estimation using the Skellam distribution. - Keigo Hirakawa; Farhan A. Baqai; Patrick J. Wolfe (Computational Imaging, 2009)

SkellamShrink: Poisson intensity estimation for vector-valued data. - Keigo Hirakawa; Patrick J. Wolfe (ICASSP, 2009)

Efficient multivariate Skellam shrinkage for denoising photon-limited image data: An Empirical Bayes approach. - Keigo Hirakawa; Patrick J. Wolfe (ICIP, 2009)

Spatio-angular sharpening for multiview 3D displays. - Vikas Ramachandra; Keigo Hirakawa; Matthias Zwicker; Truong Q. Nguyen (ICASSP, 2010)

Filterbank-based universal demosaicking. - Jing Gu; Patrick J. Wolfe; Keigo Hirakawa (ICIP, 2010)

Optimal exposure control for high dynamic range imaging. - Keigo Hirakawa; Patrick J. Wolfe (ICIP, 2010)

Single-shot high dynamic range imaging with conventional camera hardware. - Keigo Hirakawa; Paul M. Simon (ICCV, 2011)

High resolution subpixel and subframe rendering for color flatpanel and projector displays. - Keigo Hirakawa; Jing Gu (ICIP, 2011)

"Rewiring" Filterbanks for Local Fourier Analysis: Theory and Practice. - Keigo Hirakawa; Patrick J. Wolfe (IEEE Trans. Inf. Theory, 2011)

Spatioangular Prefiltering for Multiview 3D Displays. - Vikas Ramachandra; Keigo Hirakawa; Matthias Zwicker; Truong Q. Nguyen (IEEE Trans. Vis. Comput. Graph., 2011)

Corrupted reference image quality assessment. - Wu Cheng; Keigo Hirakawa (ICIP, 2012)

Analysis and Processing of Pixel Binning for Color Image Sensor. - Xiaodan Jin; Keigo Hirakawa (EURASIP J. Adv. Signal Process., 2012)

Color Constancy with Spatio-Spectral Statistics. - Ayan Chakrabarti; Keigo Hirakawa; Todd E. Zickler (IEEE Trans. Pattern Anal. Mach. Intell., 2012)

Skellam Shrinkage: Wavelet-Based Intensity Estimation for Inhomogeneous Poisson Data. - Keigo Hirakawa; Patrick J. Wolfe (IEEE Trans. Inf. Theory, 2012)

Blur Processing Using Double Discrete Wavelet Transform. - Yi Zhang 020; Keigo Hirakawa (CVPR, 2013)

A no-reference video quality assessment based on Laplacian pyramids. - Kongfeng Zhu; Keigo Hirakawa; Vijayan K. Asari; Dietmar Saupe (ICIP, 2013)

Approximations to camera sensor noise. - Xiaodan Jin; Keigo Hirakawa (Image Processing: Algorithms and Systems, 2013)

Advanced statistical tools for enhanced quality digital imaging with realistic capture models. - Aleksandra Pizurica; Javier Portilla; Keigo Hirakawa; Karen O. Egiazarian (EURASIP J. Adv. Signal Process., 2013)

Blind full reference quality assessment of poisson image denoising. - Chen Zhang 012; Keigo Hirakawa (ICIP, 2014)

Noise Parameter Estimation for Poisson Corrupted Images Using Variance Stabilization Transforms. - Xiaodan Jin; Zhenyu Xu; Keigo Hirakawa (IEEE Trans. Image Process., 2014)

Camera Processing With Chromatic Aberration. - Jan Tore Korneliussen; Keigo Hirakawa (IEEE Trans. Image Process., 2014)

Quantile analysis of image sensor noise distribution. - Jiachao Zhang; Keigo Hirakawa; Xiaodan Jin (ICASSP, 2015)

Nonparametric empirical Bayes estimation for multiplicative multiscale innovation in photon-limited imaging. - Wu Cheng; Keigo Hirakawa (ICIP, 2015)

Single-shot fourier transform multispectroscopy. - Jie Jia; Keigo Hirakawa (ICIP, 2015)

Stochastic bilateral filter for high-dimensional images. - Christina Karam; Chong Chen; Keigo Hirakawa (ICIP, 2015)

Improving surf interest point detection for defocus blur robustness. - Elhusain Saad; Keigo Hirakawa (ICIP, 2015)

Fast spatially varying object motion blur estimation. - Yi Zhang 020; Keigo Hirakawa (ICIP, 2015)

Minimum Risk Wavelet Shrinkage Operator for Poisson Image Denoising. - Wu Cheng; Keigo Hirakawa (IEEE Trans. Image Process., 2015)

Guided Filter Demosaicking For Fourier Spectral Filter Array. - Jie Jia; Chuan Ni; Andrew Sarangan; Keigo Hirakawa (Visual Information Processing and Communication, 2016)

Combining Inertial Measurements With Blind Image Deblurring Using Distance Transform. - Yi Zhang 020; Keigo Hirakawa (IEEE Trans. Computational Imaging, 2016)

Fourier Spectral Filter Array for Optimal Multispectral Imaging. - Jie Jia; Kenneth J. Barnard; Keigo Hirakawa (IEEE Trans. Image Process., 2016)

Defocus Blur-Invariant Scale-Space Feature Extractions. - Elhusain Saad; Keigo Hirakawa (IEEE Trans. Image Process., 2016)

Blind Deblurring and Denoising of Images Corrupted by Unidirectional Object Motion Blur and Sensor Noise. - Yi Zhang 020; Keigo Hirakawa (IEEE Trans. Image Process., 2016)

Fourier Multispectral Imaging: Measuring Spectra, One Sinusoid at a Time. - Keigo Hirakawa (CCIW, 2017)

Lossless compression of CFA sampled image using decorrelated Mallat wavelet packet decomposition. - Yeejin Lee; Keigo Hirakawa; Truong Q. Nguyen (ICIP, 2017)

Joint Defogging and Demosaicking. - Yeejin Lee; Keigo Hirakawa; Truong Q. Nguyen (IEEE Trans. Image Process., 2017)

Improved Denoising via Poisson Mixture Modeling of Image Sensor Noise. - Jiachao Zhang; Keigo Hirakawa (IEEE Trans. Image Process., 2017)

Square Coded Aperture: A Large Aperture With Extended Depth Of Field. - Ruojun He; Yi Zhang 020; Keigo Hirakawa (Computational Imaging, 2018)

Near-Constant Time Bilateral Filter for High Dimensional Images. - Christina Karam; Kenjiro Sugimoto; Keigo Hirakawa (ICIP, 2018)

A Wavelet-GSM Approach to Demosaicking. - Jiachao Zhang; Andong Sheng; Keigo Hirakawa (IEEE Signal Process. Lett., 2018)

Towards Optimal Denoising of Image Contrast. - Wu Cheng; Keigo Hirakawa (IEEE Trans. Image Process., 2018)

Monte-Carlo Acceleration of Bilateral Filter and Non-Local Means. - Christina Karam; Keigo Hirakawa (IEEE Trans. Image Process., 2018)

Camera-Aware Multi-Resolution Analysis for Raw Image Sensor Data Compression. - Yeejin Lee; Keigo Hirakawa; Truong Q. Nguyen (IEEE Trans. Image Process., 2018)

Pixel Binning for High Dynamic Range Color Image Sensor Using Square Sampling Lattice. - Jiachao Zhang; Jie Jia; Andong Sheng; Keigo Hirakawa (IEEE Trans. Image Process., 2018)

Detecting Image Forgery Based On Color Phenomenology. - Jamie Stanton; Keigo Hirakawa; Scott McCloskey (CVPR Workshops, 2019)

Inceptive Event Time-Surfaces for Object Classification Using Neuromorphic Cameras. - R. Wes Baldwin; Mohammed Almatrafi; Jason R. Kaufman; Vijayan K. Asari; Keigo Hirakawa (ICIAR (2), 2019)

Optical Flow Based Line Drawing Frame Interpolation Using Distance Transform to Support Inbetweenings. - Rei Narita; Keigo Hirakawa; Kiyoharu Aizawa (ICIP, 2019)

Fast Convolutional Distance Transform. - Christina Karam; Kenjiro Sugimoto; Keigo Hirakawa (IEEE Signal Process. Lett., 2019)

Corrupted Reference Image Quality Assessment of Denoised Images. - Chen Zhang 012; Wu Cheng; Keigo Hirakawa (IEEE Trans. Image Process., 2019)

Event Probability Mask (EPM) and Event Denoising Convolutional Neural Network (EDnCNN) for Neuromorphic Cameras. - R. Wes Baldwin; Mohammed Almatrafi; Vijayan K. Asari; Keigo Hirakawa (CVPR, 2020)

Improved photometric acceptance testing in image feature extraction tasks. - Elhusain Saad; Keigo Hirakawa (J. Electronic Imaging, 2020)

Distance Surface for Event-Based Optical Flow. - Mohammed Almatrafi; Raymond Baldwin; Kiyoharu Aizawa; Keigo Hirakawa (IEEE Trans. Pattern Anal. Mach. Intell., 2020)

Shift-And-Decorrelate Lifting: CAMRA for Lossless Intra Frame CFA Video Compression. - Yeejin Lee; Keigo Hirakawa (IEEE Signal Process. Lett., 2020)

DAViS Camera Optical Flow. - Mohammed Almatrafi; Keigo Hirakawa (IEEE Trans. Computational Imaging, 2020)

Color-compressive bilateral filter and nonlocal means for high-dimensional images. - Christina Karam; Kenjiro Sugimoto; Keigo Hirakawa (J. Electronic Imaging, 2021)

Multi-Resolution Aitchison Geometry Image Denoising for Low-Light Photography. - Sarah Miller; Chen Zhang 012; Keigo Hirakawa (IEEE Trans. Image Process., 2021)

EBSnoR: Event-Based Snow Removal by Optimal Dwell Time Thresholding. - Abigail Wolf; Shannon Brooks-Lehnert; Keigo Hirakawa (CoRR, 2022)

Lossless White Balance for Improved Lossless CFA Image and Video Compression. - Yeejin Lee; Keigo Hirakawa (IEEE Trans. Image Process., 2022)

Data Driven Multiband Image Fusion That Preserves Wavelength-Specific Image Features. - Hsuan Lin; Keigo Hirakawa (APSIPA ASC, 2023)

Event-Based Visual Microphone. - Matthew Howard; Keigo Hirakawa (ICASSP, 2023)

A Bayesian Perspective on Noise2Noise: Theory and Extensions. - Sarah Miller; Christina Karam; Achour Idoughi; Kodai Kikuchi; Keigo Hirakawa (ICASSP, 2023)

Time-Ordered Recent Event (TORE) Volumes for Event Cameras. - R. Wes Baldwin; Ruixu Liu; Mohammed Almatrafi; Vijayan K. Asari; Keigo Hirakawa (IEEE Trans. Pattern Anal. Mach. Intell., 2023)

Hardware Implementation of Low-latency Image Denoising with Wavelet Shrinkage and Noise2Noise-based Learning for Ultra-high Definition Cameras. - Kodai Kikuchi; Kohei Tomioka; Akira Honji; Takenobu Usui; Keigo Hirakawa; Kazuya Kitamura (ICCE, 2024)

Sign-Coded Exposure Sensing for Noise-Robust High-Speed Imaging. - R. Wes Baldwin; Vijayan K. Asari; Keigo Hirakawa (IEEE Trans. Computational Imaging, 2024)

EBS-EKF: Accurate and High Frequency Event-based Star Tracking. - Albert W. Reed; Connor Hashemi; Dennis Melamed; Nitesh Menon; Keigo Hirakawa; Scott McCloskey (CVPR, 2025)

Hardware Implementation of Low-Latency Image Denoising With Noise2Noise-Extended Learning for Ultra-High Definition Cameras. - Kodai Kikuchi; Kohei Tomioka; Akira Honji; Takenobu Usui; Kazuya Kitamura; Keigo Hirakawa (IEEE Consumer Electron. Mag., 2025)

LMP-GAN: Out-of-Distribution Detection for Non-Control Data Malware Attacks. - David Wood; David Kapp; Temesguen Messay Kebede; Keigo Hirakawa (IEEE Trans. Pattern Anal. Mach. Intell., 2025)