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Keita Hirai
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2020 – today
- 2023
- [j10]Isao Kurebayashi, Koshiro Maeda, Nobuyoshi Komuro
, Keita Hirai, Hiroo Sekiya, Makoto Ichikawa:
Mental-state estimation model with time-series environmental data regarding cognitive function. Internet Things 22: 100730 (2023) - 2022
- [j9]Kazuki Nagasawa
Fabrication of a Human Skin Mockup with a Multilayered Concentration Map of Pigment Components Using a UV Printer. J. Imaging 8(3): 73 (2022) - [j8]Masaya Ohtsu, Akihiro Kurata, Keita Hirai
Evaluating the Influence of ipRGCs on Color Discrimination. J. Imaging 8(6): 154 (2022) - [c51]Ryogo Miyazaki, Kazuya Sasaki, Norimichi Tsumura, Keita Hirai:
Hand authentication from RGB-D video based on deep neural network. 3D Imaging and Applications 2022: 1-5 - 2021
- [j7]Shiori Yamaguchi, Keita Hirai, Takahiko Horiuchi:
Video Smoke Removal from a Single Image Sequence. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 104-A(6): 876-886 (2021) - [c50]Masaya Ohtsu, Akihiro Kurata, Keita Hirai:
Color Discrimination Experiments using Metameric ipRGC Stimuli. Color Imaging: Displaying, Processing, Hardcopy, and Applications 2021: 1-7 - [c49]Isao Kurebayashi, Nobuyoshi Komuro
Testing Machine Learning Models for Individual Emotion Estimation from Indoor Environment Data. ICCE-TW 2021: 1-2 - [c48]Koshiro Maeda, Isao Kurebayashi, Nobuyoshi Komuro
A Study on Time Series Analysis of Environmental Data for Predicting Emotional Conditions. LifeTech 2021: 273-274 - 2020
- [c47]Naoki Tada, Keita Hirai:
BTF Image Recovery based on U-Net and Texture Interpolation. Material Appearance 2020: 1-6 - [c46]Takumi Nakamura, Yagi Daichi, Kuangzhe Xu
Investigating Effects of Visual and Auditory Adaptation on Metallic Material Appearance. CIC 2020: 130-135 - [c45]Kensuke Fukumoto, Kazuki Nagasawa, Wataru Arai, Kunio Hakkaku, Satoshi Kaneko, Keita Hirai, Norimichi Tsumura:
Estimation of Layered Ink Layout to reproduce desired Translucency of skin in Inkjet 3D Printer using deep neural network trained with synthetic simulated data. CIC 2020: 321-326 - [c44]Shoji Tominaga, Keita Hirai, Takahiko Horiuchi:
Spectral Estimation of Multiple Light Sources based on Highlight Detection. CIC 2020: 327-335 - [c43]Kazuki Iwata, Hiroki Shirasawa, Keita Hirai:
Image-Based Measurement of Structural Color using Spectral Camera. CIC 2020: 342-346
2010 – 2019
- 2019
- [j6]Maulisa Oktiana, Khairun Saddami
Advances in Cross-Spectral Iris Recognition Using Integrated Gradientface-Based Normalization. IEEE Access 7: 130484-130494 (2019) - [c42]Koushirou Maeda, Keita Hirai
Haze Transfer Between Images Based on Dark Channel Prior. CCIW 2019: 221-232 - [c41]Hiroki Shirasawa, Keita Hirai
Makeup Skin Appearance Reproduction by Spectral Projection Mapping. CCIW 2019: 304-317 - [c40]Takumi Nakamura, Keita Hirai, Takahiko Horiuchi:
Constructing glossiness perception model of computer graphics with sounds. Material Appearance 2019: 1-6 - [c39]Shoji Tominaga, Keita Hirai, Takahiko Horiuchi:
Appearance Reconstruction of Mutual Illumination Effect between Plane and Curved Fluorescent Objects. Material Appearance 2019: 1-6 - [c38]Junki Yoshii, Shoji Yamamoto, Kazuki Nagasawa, Wataru Arai, Satoshi Kaneko, Keita Hirai, Norimichi Tsumura:
Estimation of Layered Ink Layout from Arbitrary Skin Color and Translucency in Inkjet 3D Printer. CIC 2019: 177-182 - [c37]Shoji Tominaga, Keita Hirai, Takahiko Horiuchi:
Appearance Reconstruction of Fluorescent Objects Based on Reference Geometric Factors. CIC 2019: 393-398 - [c36]Tomoyuki Takanashi, Keita Hirai, Takahiko Horiuchi:
Construction of facial emotion database through subjective experiments and its application to deep learning-based facial image processing. Image Processing: Algorithms and Systems 2019 - 2018
- [j5]Keita Hirai
High-Dynamic-Range Spectral Imaging System for Omnidirectional Scene Capture. J. Imaging 4(4): 53 (2018) - [c35]Shoji Tominaga, Keita Hirai, Takahiko Horiuchi:
A General Method for Estimating Fluorescent Donaldson Matrices. Material Appearance 2018: 1-6 - [c34]Takahiko Horiuchi, Xu Wen, Keita Hirai:
Reversible Color-to-Gray Mapping with Resistance to JPEG Encoding. SSIAI 2018: 13-16 - 2017
- [j4]Takafumi Katsunuma, Keita Hirai, Takahiko Horiuchi:
Fabric Appearance Control System for Example-Based Interactive Texture and Color Design. ACM Trans. Appl. Percept. 14(3): 16:1-16:20 (2017) - [c33]Shiori Yamaguchi, Keita Hirai, Takahiko Horiuchi:
Video Smoke Removal Based on Smoke Imaging Model and Space-Time Pixel Compensation. CCIW 2017: 43-54 - [c32]Shoji Tominaga, Keiji Kato, Keita Hirai, Takahiko Horiuchi:
Appearance Decomposition and Reconstruction of Textured Fluorescent Objects. Material Appearance 2017: 42-47 - [c31]Keita Hirai, Wataru Suzuki, Yoshimitsu Yamada, Takahiko Horiuchi:
Interactive Object Surface Retexturing using Perceptual Quality Indexes. Material Appearance 2017: 80-85 - [c30]Shoji Tominaga, Keiji Kato, Keita Hirai, Takahiko Horiuchi:
Appearance Reconstruction of Fluorescent Objects for Different Materials and Light Source. CIC 2017: 34-39 - [c29]Takahiko Horiuchi, Yuma Saito, Keita Hirai:
Analysis of Material Representation of Manga Line Drawings using Convolutional Neural Networks. CIC 2017: 48-57 - [c28]Yoshimitsu Yamada, Keita Hirai, Takahiko Horiuchi:
Correlation Analysis between Wood Eigen Textures and Perceptual Qualities. CIC 2017: 290-295 - 2016
- [c27]Takafumi Katsunuma, Keita Hirai, Takahiko Horiuchi:
Perceptual Dependencies in Fabric Appearance between Texture and Color. Measuring, Modeling, and Reproducing Material Appearance 2016: 1-6 - [c26]Shoji Tominaga, Shingo Dozaki, Yukiko Kuma, Keita Hirai, Takahiko Horiuchi:
Modeling and Estimation for Surface-Spectral Reflectance of Watercolor Paintings. Measuring, Modeling, and Reproducing Material Appearance 2016: 1-6 - [c25]Keita Hirai, Ryosuke Nakahata, Takahiko Horiuchi:
Measuring Spectral Reflectance and 3D Shape Using Multi-primary Image Projector. ICISP 2016: 137-147 - [c24]Shoji Tominaga, Keiji Kato, Keita Hirai, Takahiko Horiuchi:
Spectral Image Analysis of Florescent Objects with Mutual Illumination. CIC 2016: 59-64 - 2015
- [c23]Takahiko Horiuchi, Jiqiang Lin, Keita Hirai:
Visual Quality Improvement of Color-Embedded Gray Images for a Reversible Color-to-Gray Algorithm. AECIA 2015: 605-615 - [c22]Ryosuke Nakahata, Keita Hirai, Takahiko Horiuchi, Shoji Tominaga:
Development of a Dynamic Relighting System for Moving Planar Objects with Unknown Reflectance. CCIW 2015: 81-90 - [c21]Keita Hirai, Daisuke Irie, Takahiko Horiuchi:
Photometric and geometric measurements based on multi-primary image projector. CVCS 2015: 1-5 - [c20]Shoji Tominaga, Keiji Kato, Keita Hirai, Takahiko Horiuchi:
Bispectral Interreflection Estimation of Fluorescent Objects. CIC 2015: 111-115 - [c19]Yuma Saito, Keita Hirai, Takahiko Horiuchi:
Construction of Manga Materials Database for Analyzing Perception of Materials in Line Drawings. CIC 2015: 201-206 - 2014
- [c18]Shoji Tominaga, Daiki Watanabe, Keita Hirai, Takahiko Horiuchi:
Spectral analysis of omnidirectional color signals in natural scenes. Color Imaging: Displaying, Processing, Hardcopy, and Applications 2014: 901503 - [c17]Shoji Tominaga, Keita Hirai, Takahiko Horiuchi:
Measurement and Modeling of Bidirectional Characteristics of Fluorescent Objects. ICISP 2014: 35-42 - [c16]Keita Hirai, Naoto Osawa, Takahiko Horiuchi, Shoji Tominaga:
An HDR Spectral Imaging System for Time-Varying Omnidirectional Scene. ICPR 2014: 2059-2064 - [c15]Jiqiang Lin, Takahiko Horiuchi, Keita Hirai, Shoji Tominaga:
Color image recovery system from printed gray image. SSIAI 2014: 41-44 - 2013
- [c14]Shoji Tominaga, Hideki Kadoi, Keita Hirai, Takahiko Horiuchi:
Metal-dielectric object classification by combining polarization property and surface spectral reflectance. Color Imaging: Displaying, Processing, Hardcopy, and Applications 2013: 86520E - [c13]Shoji Tominaga, Keita Hirai, Takahiko Horiuchi:
Estimation of bispectral matrix for fluorescent objects. CVCS 2013: 1-4 - [c12]Yuxing Wu, Keita Hirai, Takahiko Horiuchi:
Investigation of Japanese Onomatopoeias as Features for SHITSUKAN-Based Image Retrieval. ISM 2013: 399-400 - [c11]Nguyen Thuc Dieu Hang, Takahiko Horiuchi, Keita Hirai, Shoji Tominaga:
Estimation of Two Illuminant Spectral Power Distributions from Highlights of Overlapping Illuminants. SITIS 2013: 434-440 - [c10]Keita Hirai, Tetsushi Tanimoto, Kazuya Yamamoto, Takahiko Horiuchi, Shoji Tominaga:
An LED-Based Spectral Imaging System for Surface Reflectance and Normal Estimation. SITIS 2013: 441-447 - 2012
- [c9]Keita Hirai, Shoji Tominaga:
A LUT-based Method for Recovering Color Signals from High Dynamic Range Images. CIC 2012: 88-93 - 2011
- [j3]Takuya Iwanami, Ayano Kikuchi, Keita Hirai, Toshiya Nakaguchi, Norimichi Tsumura, Yoichi Miyake:
Psychological Effects of Ambient Illumination Control and Illumination Layout While Viewing Various Video Images. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 94-A(2): 493-499 (2011) - [c8]Keita Hirai, Shoji Tominaga:
Color Signal Estimation in High Dynamic Range Scenes. CIC 2011: 298-303 - 2010
- [j2]Keita Hirai, Jambal Tumurtogoo, Ayano Kikuchi, Norimichi Tsumura, Toshiya Nakaguchi, Yoichi Miyake:
Video Quality Assessment Using Spatio-Velocity Contrast Sensitivity Function. IEICE Trans. Inf. Syst. 93-D(5): 1253-1262 (2010) - [c7]Keita Hirai, Toshiaki Mikami, Norimichi Tsumura, Toshiya Nakaguchi:
Measurement and Modeling of Chromatic Spatio-Velocity Contrast Sensitivity Function and its Application to Video Quality Evaluation. CIC 2010: 86-91
2000 – 2009
- 2009
- [j1]Ayano Kikuchi, Keita Hirai, Toshiya Nakaguchi, Norimichi Tsumura, Yoichi Miyake:
Adaptive Ambient Illumination Based on Color Harmony Model. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 92-A(12): 3372-3375 (2009) - [c6]Takuya Iwanami, Ayano Kikuchi, Takashi Kaneko, Keita Hirai, Natsumi Yano, Toshiya Nakaguchi, Norimichi Tsumura, Yasuhiro Yoshida, Yoichi Miyake:
The relationship between ambient illumination and psychological factors in viewing of display Images. Color Imaging: Displaying, Processing, Hardcopy, and Applications 2009: 72410L - [c5]Keita Hirai, Jambal Tumurtogoo, Ayano Kikuchi, Toshiya Nakaguchi, Norimichi Tsumura, Yoichi Miyake:
SV-CIELAB: Video Quality Assessment using Spatio-Velocity Contrast Sensitivity Function. CIC 2009: 35-41 - [c4]Sayuri Kamimigaki, Shoji Yamamoto, Keita Hirai, Norimichi Tsumura, Toshiya Nakaguchi, Yoichi Miyake:
Real reproducing of 3D appearance with multi-projectors and cameras. CIC 2009: 164-169 - 2008
- [c3]Sayuri Kamimigaki, Keisuke Taki, Keita Hirai, Shoji Yamamoto, Norimichi Tsumura, Toshiya Nakaguchi, Yoichi Miyake:
Compensation for projected image under dim illumination with CIECAM02. CGIV/MCS 2008: 331-335 - 2007
- [c2]Keita Hirai, Norimichi Tsumura, Toshiya Nakaguchi, Yoichi Miyake:
Measurement and Modeling of Viewing-Condition-Dependent Spatio-Velocity Contrast Sensitivity Function. CIC 2007: 106-111 - 2006
- [c1]Keita Hirai, Toshiya Nakaguchi, Norimichi Tsumura, Yoichi Miyake:
Photometric HDR video for visual adaptation models. SIGGRAPH Research Posters 2006: 72
Coauthor Index
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