Research

Generalized feature learning

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PoF: Post-Training of Feature Extractor for Improving Generalization

ICML 2022

Ikuro Sato, Ryota Yamada, Masayuki Tanaka, Nakamasa Inoue, Rei Kawakami

paper code   

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Feature Space Particle Inference for Neural Network Ensembles

ICML 2022

Shingo Yashima, Teppei Suzuki, Kohta Ishikawa, Ikuro Sato, Rei Kawakami

paper code   

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Smooth Transfer Learning for Source-to-Target Generalization

NeurIPS 2021 Workshop on Distribution Shifts

Keita Takayama, Ikuro Sato, Teppei Suzuki, Rei Kawakami, Kuniaki Uto, Koishi Shinoda

paper   

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Analysis of evaluation metrics with the distance between positive pairs and negative pairs in deep metric learning

MVA 2021

Hajime Oi, Rei Kawakami, Takeshi Nacmura

paper   

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Disentangling Latent Groups Of Factors

ICIP 2021

Nakamasa Inoue, Ryota Yamada, Rei Kawakami, Ikuro Sato

pdf   

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Cross-connected Networks for Multi-task Learning of Detection and Segmentation

ICIP 2019

Rei Kawakami, Ryota Yoshihashi, Seiichiro Fukuda, Shaodi You, Makoto Iida, Takeshi Naemura

pdf   

Anomaly detection

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Anomaly Detection Using Spatio-Temporal Context Learned by Video Clip Sorting

IEICE 2022

Wen Shao, Rei Kawakami, and Takeshi Naemura

Project page   

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Open-set Recognition with Supervised Contrastive Learning

MVA 2021

Y Kodama, Y Wang, R Kawakami, T Naemura

paper   

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Classification-Reconstruction Learning for Open-Set Recognition

CVPR 2019

Ryota Yoshihashi, Wen Shao, Rei Kawakami, Shaodi You, Makoto Iida, and Takeshi Naemura

Project page pdf   

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Unsupervised Anomaly Detection with Compact Deep Features for Wind Turbine Blade Images Taken by a Drone

CVA 2019 (Also presented at MVA 2019)

Yinan Wang, Ryota Yoshihashi, Rei Kawakami, Shaodi You, Tohru Harano, Masahiko Ito, Katsura Komagome, Makoto Iida, Takeshi Naemura

pdf   

Forecasting/Generation

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Pass Receiver Prediction in Soccer Using Video and Players' Trajectories

CVPR WS CVSports 2022

Yutaro Honda, Rei Kawakami, Ryota Yoshihashi, Kenta Kato, Takeshi Naemura

pdf   

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RNN-based Motion Prediction in Competitive Fencing Considering Interaction between Players

BMVC 2020

Yutaro Honda, Rei Kawakami, Takeshi Naemura

pdf   

Object detection and classification

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Finding a Needle in a Haystack: Tiny Flying Object Detection in 4K Videos using a Joint Detection-and-Tracking Approach

arXiv:2105.08253 (Revision of arXiv:1709.04666)

R Yoshihashi, R Kawakami, S You, TT Trinh, M Iida, T Naemura

paper   

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Cattle detection and counting in UAV images based on convolutional neural networks

IJRS 2019

Wen Shao, Rei Kawakami, Ryota Yoshihashi, Shaodi You, Hidemichi Kawase, Takeshi Naemura

Project page  pdf   

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Pedestrian Detection with Motion Features via Two-stream ConvNets

CVA 2018

Ryota Yoshihashi, Tu Tuan Trinh, Rei Kawakami, Shaodi You, Makoto Iida, and Takeshi Naemura

pdf   

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Differentiating Objects by Motion: Joint Detection and Tracking of Small Flying Objects

arXiv:1709.04666

Ryota Yoshihashi, Tu Tuan Trinh, Rei Kawakami, Shaodi You, Makoto Iida, and Takeshi Naemura

pdf   

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Bird detection and species classification with time-lapse images around a wind farm: Dataset construction and evaluation

Wind Energy 2017 (Journal ver. of ICIP+EWEA 2015)

Ryota Yoshihashi, Rei Kawakami, Makoto Iida, and Takeshi Naemura

pdf

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Bird Detection near Wind Turbines from High-resolution Video using LSTM Networks

WWEC 2016

Tu Tuan Trinh, Ryota Yoshihashi, Rei Kawakami, Makoto Iida, and Takeshi Naemura

pdf

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Combining deep features for object detection at various scales: Finding small birds in landscape images

CVA 2016 (Journal ver. of ICIP 2016)

Akito Takeki, Tu Tuan Trinh, Ryota Yoshihashi, Rei Kawakami, Makoto Iida, and Takeshi Naemura

pdf

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Detection of small birds in large images by combining a deep detector with semantic segmentation

ICIP 2016

Akito Takeki, Tu Tuan Trinh, Ryota Yoshihashi, Rei Kawakami, Makoto Iida, and Takeshi Naemura

pdf

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Evaluation of bird detection using time-lapse images around a wind farm

EWEA 2015 (Oral, 25% of accepted papers)

Ryota Yoshihashi, Rei Kawakami, Makoto Iida, and Takeshi Naemura

pdf

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Construction of a bird image dataset for ecological investigations

ICIP 2015

Ryota Yoshihashi, Rei Kawakami, Makoto Iida, and Takeshi Naemura

Project page

Waterdrop modeling

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Waterdrop stereo

arXiv:1604.00730 2016

Shaodi You, Robby T. Tan, Rei Kawakami, Yasuhiro Mukaigawa and Katsushi Ikeuchi

pdf

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Adherent raindrop: modeling, detection and removal in video

PAMI 2015 (Journal ver. of CVPR 2013)

Shaodi You, Robby T. Tan, Rei Kawakami, Yasuhiro Mukaigawa and Katsushi Ikeuchi

pdf    Project page

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Raindrop detection and removal from long range trajectories

ACCV 2014 (Oral, 3.9% of accepted papers)

Shaodi You, Robby T. Tan, Rei Kawakami, and Katsushi Ikeuchi

Project page

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Adherent raindrop detection and removal in video

CVPR 2013

Shaodi You, Robby T. Tan, Rei Kawakami, and Katsushi Ikeuchi

Project page

Photometric modeling

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Camera spectral sensitivity and white balance estimation from sky images

IJCV 2013

Rei Kawakami, Hongxun Zhao, Robby T. Tan, and Katsushi Ikeuchi

Project page

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High-resolution hyperspectral imaging via matrix factorization

CVPR 2011

Rei Kawakami, John Wright, Yu-Wing Tai, Yasuyuki Matsushita, Moshe Ben-Ezra, and Katsushi Ikeuchi

Project page

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Estimating optical properties of layered surfaces using the spider model

CVPR 2010

Tetsuro Morimoto, Robby T. Tan, Rei Kawakami, and Katsushi Ikeuchi

pdf

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Accuracy of the spider model in decomposing layered surfaces

CPCV 2011

Tetsuro Morimoto, Robby T. Tan, Rei Kawakami, and Katsushi Ikeuchi

pdf

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Estimating Sunlight Polarization Using a Fish-eye Lens

CVA 2009

Daisuke Miyazaki, Mahdi Ammar, Rei Kawakami, and Katsushi Ikeuchi

pdf

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Color estimation from a single surface color

CVPR 2009

Rei Kawakami and Katsushi Ikeuchi

pdf

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Surface color estimation based on inter- and intra-pixel relationships in outdoor scenes

CVPR 2010

Shun Hirose, Tsuyoshi Suenaga, Kentaro Takemura, Rei Kawakami, Jun Takamatsu, Tsukasa Ogasawara

pdf

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Color constancy from blackbody illumination

JOSA 2007

Rei Kawakami, Jun Takamatsu and Katsushi Ikeuchi

pdf   code

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Consistent surface color for texturing large objects in outdoor scenes

ICCV 2005

Rei Kawakami, Robby T. Tan, and Katsushi Ikeuchi

pdf

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Simple surface reflectance estimation of diffuse outdoor object using spherical images

ACCV Workshop 2007

Sonoko Okura, Rei Kawakami, and Katsushi Ikeuchi

pdf

Outdoor mixed reality

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Outdoor gallery and its photometric issues

VRCAI 2010

Katsushi Ikeuchi, Takeshi Oishi, Masataka Kagesawa, Atsuhiko Banno, Rei Kawakami, Tetsuya Kakuta, Yasuhide Okamoto, and Boun Vinh Lu

pdf

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Foreground and shadow occlusion handling for outdoor augmented reality

ISMAR 2010

Boun Vinh Lu, Tetsuya Kakuta, Rei Kawakami, Takeshi Oishi, and Katsushi Ikeuchi

pdf

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Detection of moving objects and cast shadows using a spherical vision camera for outdoor mixed reality

VRST 2008

Tetsuya Kakuta, Boun Vinh Lu, Rei Kawakami, Takeshi Oishi, Katsushi Ikeuchi

pdf

Miscellaneous

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3D Digital Archive of the Burghers of Calais

VSMM 2006

Daisuke Miyazaki, Mawo Kamakura, Tomoaki Higo, Yasuhide Okamoto, Rei Kawakami, Takaaki Shiratori, Akifumi Ikari, Shintaro Ono, Yoshihiro Sato, Mina Oya, Masayuki Tanaka, Katsushi Ikeuchi, and Masanori Aoyagi

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