Algebraic phase unwrapping for functional data analytic estimations - Extensions and stabilizations. - Daichi Kitahara; Isao Yamada (ICASSP, 2013)

Algebraic phase unwrapping over collection of triangles based on two-dimensional spline smoothing. - Daichi Kitahara; Isao Yamada (ICASSP, 2014)

Probability density function estimation by positive quartic C2-spline functions. - Daichi Kitahara; Isao Yamada (ICASSP, 2015)

A virtual resampling technique for algebraic two-dimensional phase unwrapping. - Daichi Kitahara; Masao Yamagishi; Isao Yamada (ICASSP, 2015)

Algebraic phase unwrapping along the real axis: extensions and stabilizations. - Daichi Kitahara; Isao Yamada (Multidimens. Syst. Signal Process., 2015)

Stabilization of adaptive eigenvector extraction by continuation in nested orthogonal complement structure. - Kenji Kakimoto; Daichi Kitahara; Masao Yamagishi; Isao Yamada (ICASSP, 2016)

Two-dimensional positive spline smoothing and its application to probability density estimation. - Daichi Kitahara; Isao Yamada (ICASSP, 2016)

A fast dual iterative algorithm for convexly constrained spline smoothing. - Masao Yamagishi; Daichi Kitahara; Isao Yamada (ICASSP, 2016)

Algebraic Phase Unwrapping Based on Two-Dimensional Spline Smoothing Over Triangles. - Daichi Kitahara; Isao Yamada (IEEE Trans. Signal Process., 2016)

Fast high-quality three-dimensional reconstruction from compressive observation of phased array weather radar. - Ryosuke Kawami; Hidetomo Kataoka; Daichi Kitahara; Akira Hirabayashi; Takashi Ijiri; Shigeharu Shimamura; Hiroshi Kikuchi; Tomoo Ushio (APSIPA, 2017)

Nonlinear Beamforming via Convex Optimization for Phased Array Weather Radar. - Daichi Kitahara; Maya Nakahara; Akira Hirabayashi; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (APSIPA, 2018)

A Branch Cut Algorithm for 180-Degree Ambiguity Resolution in 2D Vector Fields and Its Application to Single-Frame Fringe Projection Profilometry. - Daichi Kitahara; Isao Yamada (APSIPA, 2018)

Automatic Fundus Image Segmentation for Diabetic Retinopathy Diagnosis by Multiple Modified U-Nets and SegNets. - Swathi Ananda; Daichi Kitahara; Akira Hirabayashi; K. R. Udaya Kumar Reddy (APSIPA, 2019)

Optimization-Based Fundus Image Decomposition for Diagnosis Support of Diabetic Retinopathy. - Daichi Kitahara; Swathi Ananda; Akira Hirabayashi (APSIPA, 2019)

A Convex Lifting Approach to Image Phase Unwrapping. - Laurent Condat; Daichi Kitahara; Akira Hirabayashi (ICASSP, 2019)

One-dimensional Edge-preserving Spline Smoothing for Estimation of Piecewise Smooth Functions. - Daichi Kitahara; Laurent Condat; Akira Hirabayashi (ICASSP, 2019)

Low-Dose CT Reconstruction with Multiclass Orthogonal Dictionaries. - Hiryu Kamoshita; Taisuke Shibata; Daichi Kitahara; Ken'ichi Fujimoto; Akira Hirabayashi (ICIP, 2019)

Deep Neural Network Modeling of Distortion Stomp Box Using Spectral Features. - Kento Yoshimoto; Hiroki Kuroda; Daichi Kitahara; Akira Hirabayashi (APSIPA, 2020)

Simultaneous Spline Quantile Regression Under Shape Constraints. - Daichi Kitahara; Ke Leng; Yuji Tezuka; Akira Hirabayashi (EUSIPCO, 2020)

Image Super-Resolution via Generative Adversarial Network Using an Orthogonal Projection. - Hiroya Yamamoto; Daichi Kitahara; Akira Hirabayashi (EUSIPCO, 2020)

Non-Griffin-Lim Type Signal Recovery from Magnitude Spectrogram. - Ryusei Nakatsu; Daichi Kitahara; Akira Hirabayashi (ICASSP, 2020)

Determined Source Separation Using the Sparsity of Impulse Responses. - Yuki Takahashi; Daichi Kitahara; Koichiro Matsuura; Akira Hirabayashi (ICASSP, 2020)

Frequency-Undersampled Short-Time Fourier Transform. - Daichi Kitahara (CoRR, 2020)

Multi-Contrast CSMRI Using Common Edge Structures with LiGME Model. - Daichi Kitahara; Rikako Kato; Hiroki Kuroda; Akira Hirabayashi (EUSIPCO, 2021)

A Convex Penalty for Block-Sparse Signals with Unknown Structures. - Hiroki Kuroda; Daichi Kitahara; Akira Hirabayashi (ICASSP, 2021)

Design of Tight Minimum-Sidelobe Windows by Riemannian Newton's Method. - Daichi Kitahara; Kohei Yatabe (CoRR, 2021)

Multiclass Dictionary-Based Statistical Iterative Reconstruction for Low-Dose CT. - Hiryu Kamoshita; Daichi Kitahara; Ken'ichi Fujimoto; Laurent Condat; Akira Hirabayashi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Graph-Structured Sparse Regularization Via Convex Optimization. - Hiroki Kuroda; Daichi Kitahara (ICASSP, 2022)

Image Super-Resolution via Generative Adversarial Networks Using Metric Projections onto Consistent Sets for Low-Resolution Inputs. - Hiroya Yamamoto; Daichi Kitahara; Hiroki Kuroda; Akira Hirabayashi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

Nonlinear Beamforming Based on Group-Sparsities of Periodograms for Phased Array Weather Radar. - Daichi Kitahara; Hiroki Kuroda; Akira Hirabayashi; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2022)

Block-Sparse Recovery With Optimal Block Partition. - Hiroki Kuroda; Daichi Kitahara (IEEE Trans. Signal Process., 2022)

Sparsity-Smoothness-Aware Power Spectral Density Estimation with Application to Phased Array Weather Radar. - Hiroki Kuroda; Daichi Kitahara; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (ICASSP, 2023)

Convex Estimation of Sparse-Smooth Power Spectral Densities From Mixtures of Realizations With Application to Weather Radar. - Hiroki Kuroda; Daichi Kitahara; Eiichi Yoshikawa; Hiroshi Kikuchi; Tomoo Ushio (IEEE Access, 2023)

Modal Interval Regression Based on Spline Quantile Regression. - Sai Yao; Daichi Kitahara; Hiroki Kuroda; Akira Hirabayashi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Proximal Splitting Algorithms for Convex Optimization: A Tour of Recent Advances, with New Twists. - Laurent Condat; Daichi Kitahara; Andrés Contreras; Akira Hirabayashi (SIAM Rev., 2023)

Phase and Amplitude Correction for Adaptive Beamforming of Phased Array Weather Radar. - Yuuki Wada; Hiroshi Kikuchi; Eiichi Yoshikawa; Daichi Kitahara; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2024)

Mitigation of Ground-Clutter Effects by Digital Beamforming With Precomputed Weighting Matrix for Phased Array Weather Radar. - Yuuki Wada; Yutaka Takata; Hiroshi Kikuchi; Daichi Kitahara; Eiichi Yoshikawa; Shigeharu Shimamura; Tomoo Ushio (IEEE Trans. Geosci. Remote. Sens., 2024)