Publications

2018

Karam, C; Hirakawa, K

Monte-Carlo Acceleration of Bilateral Filter and Non-Local Means Journal Article

In: IEEE Transactions on Image Processing, 27 (3), pp. 1462-1474, 2018, ISSN: 1057-7149.

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J. Zhang, ; J. Jia, ; A. Sheng, ; K. Hirakawa,

Pixel Binning for High Dynamic Range Color Image Sensor Using Square Sampling Lattice Journal Article

In: IEEE Transactions on Image Processing, 2018.

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He, R; Zhang, Y; Hirakawa, K

Square Coded Aperture: A Large Aperture With Infinite Depth Of Field Proceeding

IS&T Electronic Imaging, 2018.

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Lee, Y; Hirakawa, K; Nguyen, T Q

Camera-Aware Multi-Resolution Analysis for Raw Image Sensor Data Compression Journal Article

In: IEEE Transactions on Image Processing, PP (99), pp. 1-1, 2018, ISSN: 1057-7149.

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Ni, Chuan ; Jia, Jie ; Howard, Matthew ; Hirakawa, Keigo ; Sarangan, Andrew

A Single-Shot Multispectral Imager Using Spatially Multiplexed Fourier Spectral Filters Journal Article

In: Journal of the Optical Society of America B, 2018.

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Zhang, J; Sheng, A; Hirakawa, K

A Wavelet-GSM Approach to Demosaicking Journal Article

In: IEEE Signal Processing Magazine, 2018.

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Cheng, W; Hirakawa, K

Towards Optimal Denoising of Image Contrast Journal Article

In: IEEE Transactions on Image Processing, 2018.

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Karam, C; Sugimoto, K; Hirakawa, K

Near-Constant Time Bilateral Filter For High Dimensional Images Conference

IEEE International Conference on Image Processing, 2018.

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2017

Lee, Y; K, Hirakawa.; Nguyen, T Q

Lossless Compression of CFA Sampled Image Using Decorrelated Mallat Wavelet Packet Decomposition Inproceedings

In: IEEE International Conference on Image Processing, 2017.

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Lee, Y; Hirakawa, K; Nguyen, T Q

Joint Defogging and Demosaicking Journal Article

In: IEEE Transactions on Image Processing, 26 (6), pp. 3051-3063, 2017, ISSN: 1057-7149.

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Zhang, J; Hirakawa, K

Improved Denoising via Poisson Mixture Modeling of Image Sensor Noise Journal Article

In: IEEE Transactions on Image Processing, 26 (4), pp. 1565-1578, 2017, ISSN: 1057-7149.

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Hirakawa, K

Fourier Multispectral Imaging: Measuring Spectra, One Sinusoid at a Time Inproceedings

In: Computational Color Imaging Workshop, 2017.

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2016

Jia, Jie ; Barnard, Kenneth ; Hirakawa, Keigo

Fourier Spectral Filter Array For Optimal Multispectral Imaging Journal Article

In: IEEE Transactions on Computational Imaging, 2016.

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Saad, Elhusain ; Hirakawa, Keigo

Defocus Blur-Invariant Scale-Space Feature Extractions Journal Article

In: IEEE Transactions on Image Processing, 2016.

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Jia, Jie ; Ni, Chuan ; Sarangan, Andrew ; Hirakawa, Keigo

Guided filter demosaicking for Fourier spectral filter array Inproceedings

In: IS&T Electronic Imaging, Visual Information Processing and Communication VII, 2016.

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Zhang, Yi ; Hirakawa, Keigo

Combining Inertial Measurements With Blind Image Deblurring Using Distance Transform Journal Article

In: Transactions on Computational Imaging, 2016.

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Zhang, Y; Hirakawa, K

Blind Deblurring and Denoising of Images Corrupted by Unidirectional Object Motion Blur and Sensor Noise Journal Article

In: IEEE Transactions on Image Processing, PP (99), pp. 1-1, 2016, ISSN: 1057-7149.

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2015

Zhang, Jiachao ; Hirakawa, Keigo ; Jin, Xiaodan

Quantile Analysis Of Image Sensor Noise Distribution Inproceedings

In: IEEE International Conference on Acoustics, Speech and Signal Processing, 2015.

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Cheng, Wu ; Hirakawa, Keigo

Minimum Risk Wavelet Shrinkage Operator For Poisson Image Denoising Journal Article

In: IEEE Transactions on Image Processing, 2015.

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Saad, Elhusain ; Hirakawa, Keigo

Improving SURF Interest Point Detection For Defocus Blur Robustness Inproceedings

In: Image Processing, 2015. ICIP 2015. IEEE International Conference on, IEEE 2015.

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Jia, Jie ; Hirakawa, Keigo

Single-Shot Fourier Transform Multispectroscopy Inproceedings

In: Image Processing, 2015. ICIP 2015. IEEE International Conference on, IEEE 2015.

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Zhang, Yi ; Hirakawa, Keigo

Fast Spatially Varying Object Motion Blur Estimation Inproceedings

In: Image Processing, 2015. ICIP 2015. IEEE International Conference on, IEEE 2015.

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Karam, Christina ; Hirakawa, Keigo

Stochastic Bilateral Filter For High-Dimensional Images Inproceedings

In: Image Processing, 2015. ICIP 2015. IEEE International Conference on, IEEE 2015.

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Cheng, Wu ; Hirakawa, Keigo

Nonparametric Empirical Bayes Estimation For Multiplicative Multiscale Innovation In Photon-Limited Imaging Inproceedings

In: Image Processing, 2015. ICIP 2015. IEEE International Conference on, IEEE 2015.

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Jia, Jie ; Ni, Chuan ; Sarangan, Andrew ; Hirakawa, Keigo

Fourier Multispectral Imaging Journal Article

In: OSA Optics Express, ( ), pp. , 2015.

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Ni, Chuan ; Jia, Jie ; Hirakawa, Keigo ; Sarangan, Andrew

Design and fabrication of sinusoidal spectral filters for multispectral imaging Inproceedings

In: Nanoengineering: Fabrication, Properties, Optics, and Devices XII, SPIE, 2015.

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2014

Jin Xiaodan; Xu, Zhenyu; Hirakawa Keigo

Noise Parameter Estimation for Poisson Corrupted Images Using Variance Stabilization Transforms Journal Article

In: IEEE Transactions on Image Processing, 2014.

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Lemaster, Daniel; Hirakawa, Keigo

An improved microgrid arrangement for integrated imaging polarimeters Journal Article

In: OSA Optics Letters, 2014.

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Korneliussen, Jan Tore ; Hirakawa, Keigo

Camera Processing With Chromatic Aberration Journal Article

In: IEEE Transactions on Image Processing, 23 (10), pp. 4539-4552, 2014.

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Zhang, Chen ; Hirakawa, Keigo

Blind Full Reference Quality Assessment Of Poisson Image Denoising Inproceedings

In: IEEE International Conference on Image Processing, 2014.

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Hirakawa, Keigo; Barnard, Kenneth J

Fourier Spectral Filter Array Design For Multispectral Image Recovery Inproceedings

In: Imaging and Applied Optics 2014, pp. IM1C.5, Optical Society of America, 2014.

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Hirakawa, Keigo ; LeMaster, Daniel A

Fourier domain design of microgrid imaging polarimeters with improved spatial resolution Inproceedings

In: SPIE Sensing Technology + Applications, pp. 909906–909906, 2014.

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2013

Zhang, Yi; Hirakawa, K

Blur Processing Using Double Discrete Wavelet Transform Inproceedings

In: Computer Vision and Pattern Recognition (CVPR), 2013 IEEE Conference on, pp. 1091-1098, 2013.

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Pizurica, Aleksandra ; Portilla, Javier ; Hirakawa, Keigo ; Egiazarian, Karen

Advanced statistical tools for enhanced quality digital imaging with realistic capture models Journal Article

In: EURASIP Journal on Advances in Signal Processing, 2013 (1), pp. 140, 2013.

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Jin, Xiaodan ; Hirakawa, Keigo

Approximations to camera sensor noise Inproceedings

In: IS&T/SPIE Electronic Imaging, pp. 86550H–86550H, International Society for Optics and Photonics 2013.

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Zhu Kongfeng; Hirakawa, Keigo; Asari Vijayan; Saupe Dietmar

A No-Reference Video Quality Assessment Based On Laplacian Pyramids Inproceedings

In: IEEE International Conference on Image Processing, 2013.

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2012

Chakrabarti, A; Hirakawa, K; Zickler, T

Color Constancy with Spatio-Spectral Statistics Journal Article

In: Pattern Analysis and Machine Intelligence, IEEE Transactions on, PP (99), pp. 1, 2012.

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Cheng, W; Hirakawa., K

Corrupted Reference Image Quality Assessment Inproceedings

In: Image Processing (ICIP), 2012 19th IEEE International Conference on, 2012.

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Jin, Xiaodan ; Hirakawa, Keigo

Analysis and Processing of Pixel Binning for Color Image Sensor Journal Article

In: EURASIP Journal on Advances in Signal Processing, 2012 (1), pp. 125, 2012.

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2011

Hirakawa, K; Wolfe, P J

“Rewiring” Filterbanks for Local Fourier Analysis: Theory and Practice Journal Article

In: Information Theory, IEEE Transactions on, 57 (8), pp. 5360–5374, 2011.

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Ramachandra, V; Hirakawa, K; Zwicker, M; Nguyen, T

Spatioangular Prefiltering for Multiview 3D Displays Journal Article

In: Visualization and Computer Graphics, IEEE Transactions on, (99), pp. 1–1, 2011.

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Hirakawa, K; Simon, P M

Single-shot high dynamic range imaging with conventional camera hardware Inproceedings

In: Computer Vision (ICCV), 2011 IEEE International Conference on, pp. 1339 -1346, 2011.

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Hirakawa, K; Gu, Jing

High resolution subpixel and subframe rendering for color flatpanel and projector displays Inproceedings

In: Image Processing (ICIP), 2011 18th IEEE International Conference on, pp. 1725 -1728, 2011.

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2010

Hirakawa, K; Wolfe, P J

Optimal exposure control for high dynamic range imaging Inproceedings

In: Image Processing (ICIP), 2010 17th IEEE International Conference on, pp. 3137 -3140, 2010.

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Gu, Jing; Wolfe, P J; Hirakawa, K

Filterbank-based universal demosaicking Inproceedings

In: Image Processing (ICIP), 2010 17th IEEE International Conference on, pp. 1981 -1984, 2010.

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Hirakawa, K

Iterative Exposure Bracketing Inproceedings

In: Digital Image Processing and Analysis, Optical Society of America 2010.

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Ramachandra, V; Hirakawa, K; Zwicker, M; Nguyen, T Q

Spatio-angular sharpening for multiview 3D displays Inproceedings

In: Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on, pp. 750 -753, 2010.

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2009

Hirakawa, K; Wolfe, P

Skellam shrinkage: Wavelet-based intensity estimation for inhomogeneous Poisson data Journal Article

In: Information Theory, IEEE Transactions on, (99), pp. 1–1, 2009.

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Hirakawa, K; Wolfe, P J

Efficient multivariate Skellam shrinkage for denoising photon-limited image data: An Empirical Bayes approach Inproceedings

In: Image Processing (ICIP), 2009 16th IEEE International Conference on, pp. 2961 -2964, 2009.

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Hirakawa, K; Wolfe, P J

SkellamShrink: Poisson intensity estimation for vector-valued data Inproceedings

In: Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on, pp. 3441 -3444, 2009.

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Hirakawa, K; Baqai, F; Wolfe, P J

Wavelet-based Poisson rate estimation using the Skellam distribution Inproceedings

In: Proc. SPIE, Electronic Imaging, 2009.

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2008

Hirakawa, K; Wolfe, P J

Spatio-Spectral Color Filter Array Design for Optimal Image Recovery Journal Article

In: Image Processing, IEEE Transactions on, 17 (10), pp. 1876 -1890, 2008.

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Hirakawa, K

Color filter array image analysis for joint denoising and demosaicking Incollection

In: Lukac, Rastislav (Ed.): Single-Sensor Imaging: Methods and Applications for Digital Cameras, pp. 239–261, 2008.

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Hirakawa, K; Wolfe, P J

Spatio-Spectral Sampling and Color Filter Array Design Incollection

In: Lukac, Rastislav (Ed.): Single-Sensor Imaging: Methods and Applications for Digital Cameras, 137 , CRC, 2008.

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Hirakawa, K

Cross-talk explained Inproceedings

In: Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on, pp. 677 -680, 2008.

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Chakrabarti, A; Hirakawa, K; Zickler, T

Color constancy beyond bags of pixels Inproceedings

In: Computer Vision and Pattern Recognition, 2008. CVPR 2008. IEEE Conference on, pp. 1 -6, 2008.

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Hirakawa, K; Wolfe, P J

Advancing the digital camera pipeline for mobile multimedia: Key challenges from a signal processing perspective Inproceedings

In: Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on, pp. 5332 -5335, 2008.

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Chakrabarti, A; Hirakawa, K

Effective separation of sparse and non-sparse image features for denoising Inproceedings

In: Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on, pp. 857 -860, 2008.

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Hirakawa, K

Fourier and filterbank analyses of signal-dependent noise Inproceedings

In: Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on, pp. 3517 -3520, 2008.

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Hirakawa, K; Wolfe, P J

Second-generation color filter array and demosaicking designs Inproceedings

In: Proc. of SPIE VCIP, 2008.

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2007

Hirakawa, K; Wolfe, P J

Spatio-Spectral Color Filter Array Design for Enhanced Image Fidelity Inproceedings

In: Image Processing, 2007. ICIP 2007. IEEE International Conference on, pp. II -81 -II -84, 2007.

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Hirakawa, K; Wolfe, P J

Fourier Domain Display Color Filter Array Design Inproceedings

In: Image Processing, 2007. ICIP 2007. IEEE International Conference on, pp. III -429 -III -432, 2007.

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Hirakawa, K

Signal-dependent noise characterization in Haar filterbank representation Inproceedings

In: Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, pp. 47, 2007.

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Hirakawa, K; Meng, Xiao-Li; Wolfe, P J

A Framework for wavelet-Based Analysis and Processing of Color Filter Array Images with Applications to Denoising and Demosaicing Inproceedings

In: Acoustics, Speech and Signal Processing, 2007. ICASSP 2007. IEEE International Conference on, pp. I-597 -I-600, 2007.

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2006

Hirakawa, K; Parks, T W

Image denoising using total least squares Journal Article

In: Image Processing, IEEE Transactions on, 15 (9), pp. 2730–2742, 2006.

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Hirakawa, K; Parks, T W

Joint demosaicing and denoising Journal Article

In: Image Processing, IEEE Transactions on, 15 (8), pp. 2146–2157, 2006.

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Hirakawa, Keigo; Meng, Xiao-Li

An Empirical Bayes Em-Wavelet Unification for Simultaneous Denoising, Interpolation, and/Or Demosaicing Inproceedings

In: Image Processing, 2006 IEEE International Conference on, pp. 1453 -1456, 2006.

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2005

Hirakawa, K; Parks, T W

Adaptive homogeneity-directed demosaicing algorithm Journal Article

In: Image Processing, IEEE Transactions on, 14 (3), pp. 360–369, 2005.

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Hirakawa, K; Parks, T W

Image Denoising for Signal-Dependent Noise Inproceedings

In: Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on, pp. 29 - 32, 2005.

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Hirakawa, K; Parks, T W

Joint demosaicing and denoising Inproceedings

In: Image Processing, 2005. ICIP 2005. IEEE International Conference on, pp. III - 309-12, 2005.

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Hirakawa, K; Parks, T W

Chromatic adaptation and white-balance problem Inproceedings

In: Image Processing, 2005. ICIP 2005. IEEE International Conference on, pp. III - 984-7, 2005.

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2003

Hirakawa, K; Parks, T W

Adaptive homogeneity-directed demosaicing algorithm Inproceedings

In: Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on, pp. III - 669-72 vol.2, 2003.

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