Fujii Laboratory

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Publications List

The fiscal year of 2024

Academic Journal

  1. Ittetsu Uchiyama, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Holographic phase retrieval via Wirtinger flow: Cartesian form with auxiliary amplitude", Optics Express, vol. 32, Issue 12, pp. 20600-20617, https://doi.org/10.1364/OE.523855 (2024.5.20)

International Conference

  1. Yoshiki Watanabe, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Compressing phase-only holograms via deep phase unwrapping", Practical Holography XXXIX: Displays, Materials, and Applications, SPIE Photonics West 2025, Oral, doi: 10.1117/12.3041537, San Francisco, California, USA (2025.1.25-30).

  2. Ittetsu Uchiyama, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Stabilizing Digital Holography Using Events", The 31st International Display Workshops (IDW 2024), IST5-1L/IDEMO-2, Sapporo Convention Center, Sapporo, Japan, Oral/Demo (2024.12.4-6).

  3. Ryosuke Imazu, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Mono+Sub: Compressing Light Field as Monocular Image and Subsidiary Data", 2024 IEEE International Conference on Visual Communication and Image Processing, pp. 1-5, doi: 10.1109/VCIP63160.2024.10849860, Poster, Tokyo, Japan (2024.12.8-11).

  4. Takuto Nishio, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Warm-start NeRF: Accelerating Per-scene Training of NeRF-based Light-Field Representation", 2024 IEEE International Conference on Visual Communication and Image Processing, pp. 1-5, doi: 10.1109/VCIP63160.2024.10849784, Poster, Tokyo, Japan (2024.12.8-11).

  5. Shuji Habuchi, Keita Takahashi, Chihiro Tsutake, Toshiaki Fujii, Hajime Nagahara: "Time-Efficient Light-Field Acquisition Using Coded Aperture and Events", IEEE/CVF Computer Vision and Pattern Recognition Conference (CVPR) 2024, pp. 24923-24933, (2024.6).

The fiscal year of 2023

Academic Journal

  1. Kei Suzuki, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Compressing Sign Information in DCT-based Image Coding via Deep Sign Retrieval", ITE Transactions on Media Technology and Applications, Vol. 12, No. 1, pp. 110--122, https://doi.org/10.3169/mta.12.110 (2024.1.1)

  2. Ryoya Mizuno, Keita Takahashi, Michitaka Yoshida, Chihiro Tsutake, Toshiaki Fujii, Hajime Nagahara: "Compressive Acquisition of Light Field Video Using Aperture-Exposure-Coded Camera", ITE Transactions on Media Technology and Applications (MTA), Vol. 12, No. 1, pp. 22--35, https://doi.org/10.3169/mta.12.22 (2024.1.1)

  3. Yuya Ishikawa, Keita Takahashi, Chihiro Tsutake, Toshiaki Fujii: "Reconstructing Continuous Light Field From Single Coded Image", IEEE Access, Vol. 11, pp. 99387 - 99396, DOI: 10.1109/ACCESS.2023.3314340 (2023.9.11).

  4. Masaki Kawakami, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Compressing Light Field as Multiplane Image", ITE Transactions on Media Technology and Applications (MTA), Vol. 11, Issue 2, pp. 27--33, DOI: https://doi.org/10.3169/mta.11.27(2023.4.1)

  5. Chisaki Sato, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Direct Super Resolution for Multiplane Images", ITE Transactions on Media Technology and Applications (MTA), Vol. 11, Issue 2, pp. 34--42, DOI: https://doi.org/10.3169/mta.11.34 (2023.4.1)

International Conference

  1. Hiroyuki Okuno, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Unsupervised Framerate Upsampling from Events", International Workshop on Advanced Image Technology 2024 (IWAIT 2024), Oral, Langkawi, Malaysia (2024.1.7-8)

  2. Yuya Ishikawa, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Toward Neural LightField Compression", International Workshop on Advanced Image Technology 2024 (IWAIT 2024), Oral, Langkawi, Malaysia (2024.1.7-8)

  3. Ryota Kibune, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Holography via Monocular Depth Estimation", The 30th International Display Workshops (IDW 2023), 3Dp1-6L, TOKI MESSE Niigata Convention Center, Niigata, Japan, Poster (2023.12.6-8).

  4. Tatsuki Wada, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Holographic Phase Retrieval Based on PhaseMax", The 30th International Display Workshops (IDW 2023), 3DSA8/3D8-2, TOKI MESSE Niigata Convention Center, Niigata, Japan, Oral (2023.12.6-8).

  5. Koki Matsuoka, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Light Field Acquisition Using Shack-Hartmann Wavefront Sensor and Its Application to Holographic Stereogram", The 30th International Display Workshops (IDW 2023), 3DSA7/3D7-2, TOKI MESSE Niigata Convention Center, Niigata, Japan, Oral (2023.12.6-8).

The fiscal year of 2022

Academic Journal

  1. Masaki Kawakami, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Compressing Light Field as Multiplane Image", ITE Transactions on Media Technology and Applications (MTA), Vol. 11, Issue 2, pp. 27--33, DOI: https://doi.org/10.3169/mta.11.27(2023.4.1)

  2. Chisaki Sato, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Direct Super Resolution for Multiplane Images", ITE Transactions on Media Technology and Applications (MTA), Vol. 11, Issue 2, pp. 34--42, DOI: https://doi.org/10.3169/mta.11.34 (2023.4.1)

  3. Kohei Tateishi, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Time-Multiplexed Coded Aperture and Coded Focal Stack --Comparative Study on Snapshot Compressive Light Field Imaging", IEICE Transactions on Information and Systems, Vol. E105-D, No. 10, pp. 1679--1690, DOI: 10.1587/transinf.2022PCP0003 (2022.10.1)

  4. Hayato Watanabe, Jun Arai, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Pixel-density enhanced integral three-dimensional display with two-dimensional image synthesis", Optics Express, Vol. 30, No. 20, pp. 36038-36054, DOI: 10.1364/OE.469045 (2022.9.19)

  5. Taisei Iwatsuki, Keita Takahashi, Toshiaki Fujii: "Unsupervised Disparity Estimation from Light Field Using Plug-and-Play Weighted Warping Loss", Signal Processing: Image Communication, Vol. 107, No. 116764, pp. 1--8, https://doi.org/10.1016/j.image.2022.116764 (2022.6.8)

  6. Keigo Tomita, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii; "Denoising Multi-View Images by Soft Thresholding: A Short-Time DFT Approach", Signal Processing: Image Communication, Vol. 105, No, 116710, pp. 1--13, DOI: https://doi.org/10.1016/j.image.2022.116710, (2022.4.14)

International Conference

  1. Hayato Watanabe, Jun Arai, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Image Generation Method Using Weight Maps for Subjective Quality Improvement in Two-Dimensional Image Synthetic Integral Three-Dimensional Display", The 29th International Display Workshops (IDW 2022), 3D1-4L, Fukuoka International Congress Center Fukuoka, Japan/Online, Oral (2022.12.15-17)

  2. Chisaki Sato, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Displaying Multiple 3D Scenes with a Single Layered Display", The 29th International Display Workshops (IDW 2022), 3Dp1-5L, Fukuoka International Congress Center Fukuoka, Japan/Online, Poster (2022.12.15-17)

  3. Ryoya Mizuno, Keita Takahashi, Michitaka Yoshida, Chihiro Tsutake, Toshiaki Fujii, Hajime Nagahara: "Reconstructing Dynamic Light Field from Successive Coded Images", The 13th International Conference on 3D Systems and Applications (3DSA 2022), S10-2, National Taiwan University/Online, Oral (2022.11.24-25)

  4. Ryoya Mizuno, Keita Takahashi, Michitaka Yoshida, Chihiro Tsutake, Toshiaki Fujii, Hajime Nagahara: "Acquiring a Dynamic Light Field through a Single-Shot Coded Image", IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), pp. 19830--19840, New Orleans, Louisiana, USA/Online (2022.6.19-24)

Award

  1. Keita Takahashi: Outstanding Reviewers, ECCV 2022 (2022.11)

The fiscal year of 2021

Academic Journal

  1. Kohei Sakai, Keita Takahashi, Toshiaki Fujii: "Binary and Rotational Coded-Aperture Imaging for Dynamic Light Fields", IEICE Transactions on Information and Systems, Vol.E104-D, No. 8, pp.1395--1398, DOI: 10.1587/transinf.2020EDL8159 (2021.8.1).

  2. Koichiro Yamanaka, Keita Takahashi, Toshiaki Fujii, Ryutaroh Matsumoto: "Simultaneous Attack on CNN-based Monocular Depth Estimation and Optical Flow Estimation", IEICE Transactions on Information and Systems, Vol. E104-D, No. 5, pp. 785--788, DOI: 10.1587/transinf.2021EDL8004 (2021.5.1)

International Conference

  1. Farah Fairuz Zahirah, Chihiro Tsutake, Keita Takahashi and Toshiaki Fujii: "Input-Flexible Focal Stack Interpolation and Its Robustness Analysis", The Eleventh International Workshop on Image Media Quality and its Applications (IMQA2022), OS2-2, pp. 50-53, Online (2022.3.3,4)

  2. Yoichi Ishikawa, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Vision-Correcting Display with Microlens Array", International Display Workshop (IDW21), Vol. 28, pp. 598-601, VHF7/3D4-3, Oral, Online, Japan (2021.12.1-3).

  3. Chisaki Sato, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Regarding Multi Plane Image as a Layered Light Field Display", International Display Workshop (IDW21), Vol. 28, pp. 448-451, 3D5-2, Oral, Online, Japan (2021.12.1-3).

  4. Kotaro Matsuura, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Head-Tracking Layered Light-Field Display", International Display Workshop (IDW21), Vol. 28, pp. 472-475, 3Dp1-1, Lightning talk, Online, Japan (2021.12.1-3).

  5. Kohei Tateishi, Kohei Sakai, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Factorized Modulation for Single-Shot Light-Field Acquisition", IEEE International Conference on Image Processing (ICIP), pp. 3253--3257, DOI: 10.1109/ICIP42928.2021.9506797, Online (2021.9.19-22).

  6. Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "An Efficient Compression Method for Sign Information of DCT Coefficients Via Sign Retrieval", IEEE International Conference on Image Processing (ICIP), pp. 2024--2028, DOI: 10.1109/ICIP42928.2021.9506155, Online (2021.9.19-22).

  7. Yu Mikami, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "An Efficient Image Compression Method based on Neural Network: An OverFitting Approach", IEEE International Conference on Image Processing (ICIP), pp. 2084--2088, DOI: 10.1109/ICIP42928.2021.9506367, Online (2021.9.19-22).

Award

  1. Kotaro Matsuura, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii, International Display Workshop (IDW) 2021, Outstanding Lightning Talk Paper Award, --Kotaro Matsuura, Chihiro Tsutake, Keita Takahashi, Toshiaki Fujii: "Head-Tracking Layered Light-Field Display"-- (2021.12.1-3).

The fiscal year of 2020

Academic Journal

  1. Kota Imaeda, Keita Takahashi, Toshiaki Fujii, Yukihiro Bandoh, Seishi Takamura, Hideaki Kimata: "HEVC-based Light-field Coding using Basis Images and Frame Reordering", ITE Transactions on Media Technology and Applications, Vol. 9, Issue 1, pp. 86--94, DOI: https://doi.org/10.3169/mta.9.86 (2021.1.1)

  2. Kohei Sakai, Yasutaka Inagaki, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara: "CFA Handling and Quality Analysis for Compressive Light Field Camera", ITE Transactions on Media Technology and Applications, Vol. 9, No. 1, pp. 25--32, DOI: https://doi.org/10.3169/mta.9.25 (2021.1.1)

  3. Koichiro Yamanaka, Ryutaroh Matsumoto, Keita Takahashi, Toshiaki Fujii: "Adversarial Patch Attacks on Monocular Depth Estimation Networks", IEEE Access, Vol. 8, pp. 179094--179104, DOI: https://doi.org/10.1109/ACCESS.2020.3027372 (2020.9.28)

International Conference

  1. Kotaro Matsuura, Keita Takahashi, Toshiaki Fujii: "Enhancing Angular Resolution of Layered Light-Field Display by Using Monochrome Layers," Stereoscopic Displays and Applications XXXII, IS&T International Symposium on Electronic Imaging 2021, Oral, online (2021.1.18-28)

  2. Fumitaka Tateiwa, Keita Takahashi, Toshiaki Fujii: "Learning to Synthesize Dense Focal Stack and All-in-Focus Images from Sparse Focal Stack", International Workshop on Advanced Image Technology 2021 (IWAIT 2021), Oral, online (2021.1.5-6)

  3. Aki Kunieda, Keita Takahashi, Toshiaki Fujii: "Comparing Pixel Predictors for Lossless Image Coding", International Workshop on Advanced Image Technology 2021 (IWAIT 2021), Oral, online (2021.1.5-6)

  4. Kohei Sakai, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara: "Acquiring Dynamic Light Fields through Coded Aperture Camera", European Conference on Computer Vision (ECCV) 2020, Springer Lecture Notes in Computer Science, vol 12364, pp. 368--385, DOI: https://doi.org/10.1007/978-3-030-58529-7_22, Poster/Online (2020.8.23-28).

Award

  1. Aki Kunieda, Keita Takahashi, Toshiaki Fujii: Best Paper Award, International Workshop on Advanced Image Technology 2021 -- Aki Kunieda, Keita Takahashi, Toshiaki Fujii: "Comparing Pixel Predictors for Lossless Image Coding" -- (2021.1.6)

  2. Fumitaka Tateiwa, Keita Takahashi, Toshiaki Fujii: Best Paper Award, International Workshop on Advanced Image Technology 2021 -- Fumitaka Tateiwa, Keita Takahashi, Toshiaki Fujii: "Learning to Synthesize Dense Focal Stack and All-in-Focus Images from Sparse Focal Stack" -- (2021.1.6)

The fiscal year of 2019

Academic Journal

  1. Keita Maruyama, Keita Takahashi, Toshiaki Fujii: "Comparison of Layer Operations and Optimization Methods for Light Field Display", IEEE Access, Vol. 8, pp. 38767--38775, DOI: 10.1109/ACCESS.2020.2975209, (2020.2.20).

  2. Kohei Isechi, Keita Takahashi, Toshiaki Fujii: "Disparity Compensation Framework for Light-Field Coding Using Weighted Binary Patterns", ITE Transactions on Media Technology and Applications, Special Section on Advanced Multimedia Transmission Technology and Its Application, Volume 8, Issue 1, pp. 40--48, DOI:10.3169/mta.8.40 (2020.1.1).

  3. Shu Fujita, Keita Takahashi, Toshiaki Fujii: "Good Group Sparsity Prior for Light Field Interpolation", IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E103-A, No. 01, pp. 346--355, DOI: 10.1587/transfun.2018EAP1175 (2020.1.1)

  4. Go Hoben, Shu Fujita, Keita Takahashi, Toshiaki Fujii: "Fast and Robust Disparity Estimation from Noisy Light Fields Using 1-D Slanted Filters", IEICE Transactions on Information and Systems, Vol E102-D, No. 11, pp. 2101-2109, DOI: 10.1587/transinf.2019PCP0003, (2019.11.1)

  5. Koji Komatsu, Kohei Isechi, Keita Takahashi, Toshiaki Fujii: "Light Field Coding Using Weighted Binary Images", IEICE Transactions on Information and Systems, Vol E102-D, No. 11, pp. 2110--2119, DOI: 10.1587/transinf.2019PCP0001 (2019.11.1)

  6. Shu Fujita Keita Takahashi, Toshiaki Fujii:"High-Quality Multi-View Image Extraction from a Light Field Camera Considering Its Physical Pixel Arrangement", IEICE TRANSACTIONS on Information and Systems, Vol.E102-D, No.4, pp.702--714, invited paper, DOI:10.1587/transinf.2018AWI0004 (2019.4)

  7. Kohei Isechi, Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii: "Light Field Compression for Compressive 3D Display", International Journal of Machine Learning and Computing, Vol.9, No. 2, pp. 208--212 (2019.4)

International Conference

  1. Yusuke Ota, Ryutaroh Matsumoto, Keita Takahashi and Toshiaki Fujii: "Fast 3-D Display System from A Multi-view Camera to A Layered Display", The Tenth International Workshop on Image Media Quality and its Applications (IMQA), PS2-2, Poster, Natiional Taiwan University of Science and Technology /Taiwan (2020.3.12-13).

  2. Kota Imaeda, Kohei Isechi, Keita Takahashi, Toshiaki Fujii, Yukihiro Bandoh, Takehito Miyazawa, Seishi Takamura, Atsushi Shimizu: "LF-TSP: Traveling salesman problem for HEVC-based light-field coding", 2019 IEEE International Conference on Visual Communications and Image Processing (VCIP), Poster, Sydney, Australia (2019.12.1-4)

  3. Yusuke Ota, Keita Maruyama, Ryutaroh Matsumoto, Keita Takahashi, Toshiaki Fujii: "Displaying Live 3-D Video from a Multi-View Camera on a Layered Display", International Display Workshop (IDW19), pp. 1081-1084, 3Dp1/3DSAp1-22, Poster, Sapporo Convention Center/Sapporo, Japan (2019.11.27-29).

  4. Yasutaka Inagaki, Keita Takahashi, Toshiaki Fujii: "Light Field Acquisition from Focal Stack via a Deep CNN", International Display Workshop (IDW19), 3Dp1/3DSAp1-21, pp. 1077-1080, Poster, Sapporo Convention Center/Sapporo, Japan (2019.11.27-29).

  5. Keita Maruyama, Keita Takahashi, Toshiaki Fujii, Munekazu Date, Hideaki Kimata: "Comparative Study on Layered Light-Field Displays and Optimization Methods", International Display Workshop (IDW19), 3Dp1/3DSAp1-20, pp. 1073-1076, Poster, Sapporo Convention Center/Sapporo, Japan (2019.11.27-29).

  6. Keita Maruyama, Yasutaka Inagaki, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara: "A 3-D Display Pipeline from Coded-Aperture Camera to Tensor Light-Field Display through CNN", IEEE International Conference on Image Processing (ICIP) 2019, DOI:10.1109/ICIP.2019.8803741, MP.PF.6, Poster, Taipei International Convention Center / Taipei, Taiwan (2019.9.22-25).

  7. Irene Viola, Keita Takahashi, Toshiaki Fujii, and Touradj Ebrahimi: "Rendering-dependent compression and quality evaluation for light field contents", SPIE Optical Engineering + Applications, Volume 11137, Applications of Digital Image Processing XLII, 111371I, San Diego, California, United States (2019.8.11-15).

  8. Yasutaka Inagaki, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara: "Learning-Based Framework for Capturing Light Fields through a Coded Aperture Camera", IEEE International Conference on Computational Photography (ICCP) 2019, Poster 11, The University of Tokyo/Tokyo, Japan, Poster (2019.5.17-19)

Award

The fiscal year of 2018

Academic Journal

  1. Yusuke Yagi, Keita Takahashi, Toshiaki Fujii, Toshiki Sonoda, Hajime Nagahara: "Designing Coded Aperture Camera Based on PCA and NMF for Light Field Acquisition", IEICE Transactions on Information and Systems, Vol. E101-D, No. 9, pp. 2190--2200, DOI:10.1587/transinf.2017PCP0007 (2018.9)
  2. Keita Takahashi, Yuto Kobayashi, Toshiaki Fujii: "From Focal Stack to Tensor Light-Field Display", IEEE Transactions on Image Processing, Vol. 27, No. 9, pp. 4571--4584, DOI: 10.1109/TIP.2018.2839263 (2018.9).
  3. Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii, "Using high-resolution binary layers and a low-resolution multibit backlight for a layered light-field display," Optical Engineering, Vol. 57, No. 6, 061607, doi: 10.1117/1.OE.57.6.061607 (2018.6).
  4. Takahiro Suzuki, Keita Takahashi, Toshiaki Fujii: "Sheared EPI Analysis for Disparity Estimation from Light Fields," IEICE Transactions on Information and Systems, Vol. E100-D, No. 9, pp. 1984--1993, DOI: 10.1587/transinf.2016PCP0004 (2017.9.1)

International Conference

  1. Irene Viola, Keita Takahashi, Toshiaki Fujii, Touradj Ebrahimi: "A comprehensive framework for visual quality assessment of light field tensor displays", Electronic Imaging 2019, Image Quality and System Performance XVI, IQSP-310, Oral, Hyatt Regency San Francisco Airport/California, USA, (2019.1.13-17).
  2. Daiki Ito, Keita Takahashi and Toshiaki Fujii: "Generating Arbitrarily Focused Images from Sparse Focal Stack Through Light Field Reconstruction", The 2019 Joint International Workshop on Advanced Image Technology and International Forum on Medical Imaging in Asia (IWAIT-IFMIA2019), Poster, Proc. SPIE 11049, 110493E (22 March 2019); doi: 10.1117/12.2521486, Nanyang Technological University, Singapore (2019.1.6-9).
  3. Koji Komatsu, Keita Takahashi and Toshiaki Fujii: "Multi-View Image Coding Using Disparity-Compensated and Weighted Binary Patterns", The 2019 Joint International Workshop on Advanced Image Technology and International Forum on Medical Imaging in Asia (IWAIT-IFMIA2019), Poster, Proc. SPIE 11049, 1104930 (22 March 2019); doi: 10.1117/12.2521374, Nanyang Technological University, Singapore (2019.1.6-9).
  4. Tomohiro Hidaka, Keita Takahashi and Toshiaki Fujii: "Separating Information for Space-Time Hybrid Code", The 2019 Joint International Workshop on Advanced Image Technology and International Forum on Medical Imaging in Asia (IWAIT-IFMIA2019), Poster, Proc. SPIE 11049, 110492Q (22 March 2019); doi: 10.1117/12.2521485, Nanyang Technological University, Singapore (2019.1.6-9).
  5. Shu Fujita, Sho Mikawa, Mehrdad Panahpourtehrani, Keita Takahashi and Toshiaki Fujii: "Extracting Multi-View Images from Multi-Focused Plenoptic Camera", The 2019 Joint International Workshop on Advanced Image Technology and International Forum on Medical Imaging in Asia (IWAIT-IFMIA2019), IWAIT-IFMIA2019, Poster, Nanyang Technological University, Singapore (2019.1.6-9).
  6. Mehrdad Teratani, Shu Fujita, Wehzhe Ouyang, Keita Takahashi, Toshiaki Fujii: "3D Imaging System Using Multi-Focus Plenoptic Camera and Tensor Display", 2018 International Conference on 3D Immersion (IC3D), Brussels, Belgium (2018.12).
  7. Wenzhe Ouyang, Shu Fujita, Keita Takahashi, Toshiaki Fujii: "A Pipeline from Raytrix to Tensor Display", 2018 International Workshop on Smart Info-Media Systems in Asia (SISA2018), SS3-1, pp. 49--52, Poster, Kanagawa Institute of Technology, Atsugi, Kanagawa, Japan (2018.12.13,14).
  8. Keita Maruyama, Hiromichi Kojima, Keita Takahashi, Toshiaki Fujii: "Implementation of Table-Top Light Field Display with Stacked Layers", International Display Workshop, 3Dp1-6, pp. 845--848, Poster, Nagoya Congress Center, Nagoya, Japan (2018.12.12-14).
  9. Tomohiro Hidaka, Keita Maruyama, Takuma Fujiwara, Keita Takahashi, Toshiaki Fujii: "A Flexible Pipeline from a Single-View Camera to a Stacked-Layer Light-Field Display", International Display Workshop, 3Dp1-5, pp. 841--844, Poster, Nagoya Congress Center, Nagoya, Japan (2018.12.12-14).
  10. Koji Komatsu, Keita Takahashi, Toshiaki Fujii: "Scalable Light Field Coding Using Weighted Binary Images", IEEE International Conference on Image Processing (ICIP2018), WP.L5.4, Oral, pp. 903--907, Athens, Greece (2018.10.7-10).
  11. Gou Houben, Shu Fujita, Keita Takahashi, Toshiaki Fujii: "Fast and Robust Disparity Estimation for Noisy Light Fields", IEEE International Conference on Image Processing (ICIP2018), TP.P4.7, Poster, pp. 2610--2614, Athens, Greece (2018.10.7-10).
  12. Shu Fujita, Keita Takahashi, Toshiaki Fujii: "How Should We Handle 4D Light Fields with CNNs?", IEEE International Conference on Image Processing (ICIP2018), TP.P4.5, Poster, pp. 2600--2604, Athens, Greece (2018.10.7-10).
  13. Yasutaka Inagaki, Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii, Hajime Nagahara: "Learning to Capture Light Fields through a Coded Aperture Camera", European Conference on Computer Vision (ECCV), P-2B-14, (Springer, LNCS volume 11211 Part VII, pp. 431--448), Poster, GASTEIG Cultural Center, Munich, Germany (2018.9.8-14)
  14. Kohei Isechi, Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii: "Light Field Compression for Compressive 3D Display," The 3rd International Conference on Computer and Communication Systems, NH033, Nagoya Institute of Technology, Aichi, Japan (2018.4.27-30).

Award

  1. Koji Komatsu, Keita Takahashi, Toshiaki Fujii: IWAIT Best Paper Award, International Workshop on Advanced Image Technology 2019 -- Koji Komatsu, Keita Takahashi, Toshiaki Fujii: "Multi-View Image Coding using Disparity-Compensated and Weighted Binary Patterns" -- (2019.1.6-9).
  2. Tomohiro Hidaka, Keita Takahashi, Toshiaki Fujii: IWAIT Best Paper Award, International Workshop on Advanced Image Technology 2019 -- Tomohiro Hidaka, Keita Takahashi, Toshiaki Fujii: "Separating Information for Space-Time Hybrid Code" -- (2019.1.6-9).
  3. Keita Maruyama, The 25th International Display Workshops, Outstanding Poster Paper Award --Keita Maruyama, Hiromichi Kojima, Keita Takahashi, Toshiaki Fujii: "Implementation of Table-Top Light Field Display with Stacked Layers"-- (2018.12.12-14).
  4. Wenzhe Ouyang, 2018 International Workshop on Smart Info-media System in Asia (SISA 2016), AVM Special Session Best Student Paper Award, -- Wenzhe Ouyang, Shu Fujita, Keita Takahashi, Toshiaki Fujii: "A Pipeline from Raytrix to Tensor Display" -- (2018.12.13,14).
  5. Yuto Kobayashi, Shu Kondo, Keita Takahashi, Toshiaki Fujii: Niwa & Takayanagi Award, Excellent Paper Award, The Institute of Image Information and Television Engineers -- Yuto Kobayashi, Shu Kondo, Keita Takahashi, Toshiaki Fujii: "A 3-D Display Pipeline: Capture, Factorize, and Display the Light Field of a Real 3-D Scene", ITE Transactions on Media Technology and Applications, Vol. 5, No. 3, 2017 -- (2018.5.30).

The fiscal year of 2017

Academic Journal

  1. Takahiro Suzuki, Keita Takahashi, Toshiaki Fujii: "Sheared EPI Analysis for Disparity Estimation from Light Fields," IEICE Transactions on Information and Systems, Vol. E100-D, No. 9, pp. 1984--1993, DOI: 10.1587/transinf.2016PCP0004 (2017.9.1)
  2. Kazuki Shibata, Mehrdad Panahpour Teherani, Keita Takahashi, Toshiaki Fujii: "Estimation of Dense Displacement by Scale Invariant Polynomial Expansion of Heterogeneous Multi-view Images," IEICE Transactions on Information and Systems, Vol. E100-D, No. 9, pp. 2048--2051, DOI: 10.1587/transinf.2016PCL0008 (2017.9.1)
  3. Shu Kondo, Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii: "Physically-Correct Light-Field Factorization for Perspective Images," IEICE Transactions on Information and Systems, Vol. E100-D, No. 9, pp. 2052--2055, DOI: 10.1587/transinf.2016PCL0006 (2017.9.1)
  4. Yuto Kobayashi, Shu Kondo, Keita Takahashi, Toshiaki Fujii: "A 3-D Display Pipeline: Capture, Factorize, and Display the Light Field of a Real 3-D Scene", ITE Transactions on Media Technology and Applications Vol. 5, No. 3, pp. 88--95, DOI: 10.3169/mta.5.88 (2017.7.1)
  5. Mehrdad Panahpour Tehrani, Tomoyuki Tezuka, Kazuyoshi Suzuki, Keita Takahashi, Toshiaki Fujii: "Free-Viewpoint Image Synthesis Using Superpixel Segmentation", APSIPA Transactions on Signal and Information Processing, Vol. 6, doi:10.1017/ATSIP.2017.5 (2017.6.13)

International Conference

  1. Yusuke Uemoto, Keita Takahashi, Toshiaki Fujii: "Free Viewpoint Video Generation System Using Visual Hull", International Workshop on Advanced Image Technology (IWAIT2018), Poster Session 2: Vision & Multimedia, #6, The Imperial Mae Ping Hotel/Chiang Mai, Thailand, Poster (2018.1.7-10)
  2. Sho Mikawa, Keita Takahashi, Toshiaki Fujii: "Simulating a Stacked-Layer Light-Field Display Using Orthographic/perspective View Models", International Workshop on Advanced Image Technology (IWAIT2018), Poster Session 2: Vision & Multimedia, #5, The Imperial Mae Ping Hotel/Chiang Mai, Thailand, Poster (2018.1.7-10)
  3. Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii: "Using Higher Resolution and Lower Bit-Depth Panels for Stacked-Layer Light-Field Display", the 24th International Display Workshops, 3Dp1-11, pp. 901--904, Sendai International Center/Miyagi Japan, poster/demo (2017.12.7-9)
  4. Tomoki Oooka, Keita Takahashi, Kazuhiro Hara, Miwa Katayama, Masahiro Kawakita, Toshiaki Fujii: "A Flexible Pipeline from a Multi-View Camera to an Integral 3D Display", the 24th International Display Workshops, 3Dp1-4, pp. 876--879, Sendai International Center/Miyagi Japan, poster/demo (2017.12.7-9)
  5. Keita Takahashi, Shu Fujita, Toshiaki Fujii: "Good Group Sparsity Prior for Light Field Interpolation", IEEE International Conference on Image Processing (ICIP), pp. 1447--1451, Oral, China National Convention Center, Beijing, China (2017.9.17-20)
  6. Yusuke Yagi, Keita Takahashi, Toshiaki Fujii, Toshiki Sonoda, Hajime Nagahara: "PCA-Coded Aperture for Light Field Photography", IEEE International Conference on Image Processing (ICIP), pp. 3031--3035, Poster, China National Convention Center, Beijing, China (2017.9.17-20)
  7. Shu Fujita, Keita Takahashi, Toshiaki Fujii: "Improved Shearlet Regularization for High-Quality Light Field Interpolation", 2017 International Workshop on Smart Info-media System in Asia (SISA 2017), IPSJ-AVM Special Session, SS1-2, Poster, Kyushu Institute of Information Sciences, Fukuoka, Japan (2017.9.6-8)

Award

  1. Yuto Kobayashi, IEEE Nagoya Section Excellent Student Award (2018.3.26)
  2. Yusuke Uemoto, Keita Takahashi, Toshiaki Fujii: IWAIT2018 Best Paper Award, International Workshop on Advanced Image Technology 2018 --Yusuke Uemoto, Keita Takahashi, Toshiaki Fujii: "Free Viewpoint Video Generation System Using Visual Hull"-- (2018.1.7-10)
  3. Yuto Kobayashi, The 24th International Display Workshops, Outstanding Poster Paper Award --Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii: "Using Higher Resolution and Lower Bit-Depth Panels for Stacked-Layer Light-Field Display"-- (2017.12.6-8)

The fiscal year of 2016

Academic Journal

  1. Toyohiro Saito, Yuto Kobayashi, Keita Takahashi, Toshiaki Fujii: "Displaying Real-World Light-Fields with Stacked Multiplicative Layers: Requirement and Data Conversion for Input Multi-view Images," IEEE/OSA Journal of Display Technology, Volume 12, Issue 11, pp. 1290--1300, Print ISSN: 1551-319X, Online ISSN: 1558-9323, (2016.11)
  2. Yusuke Miyagi, Keita Takahashi, Toshiaki Fujii: "Weighted 4D-DCT Basis for Compressively Sampled Light Fields," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E99-A, no. 9, pp. 1655--1664, Online ISSN: 1745-1337 (2016.9.1)

International Conference

  1. Yuto Kobayashi, Keita Takahashi, Toshiaki, Fujii: "From Focal Stacks to Tensor Display: A Method for Light Field Visualization Without Multi-View Images," IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IVMSP-P14.3, pp. 2007--2011, Poster, Hilton New Orleans Riverside/New Orleans, USA (2017.3.5-9)
  2. Keita Takahashi, Yuto Kobayashi, Toshiaki Fujii: "Displaying Real World Light Fields using Stacked LCDs," The 23rd International Display Workshops in conjunction with Asia Display 2016, DES4/3D8 - 1, pp. 1300--1303, oral/invited talk & Innovative Demonstration Session (I-DEMO), Fukuoka, Japan/Fukuoka International Congress Center (2016.12.7-9)
  3. Takahiro Suzuki, Keita Takahashi, Toshiaki Fujii: "Disparity Estimation from Light Fields Using Sheared EPI Analysis", IEEE International Conference on Image Processing (ICIP2016), pp. 1444-1448, WP-L3, Oral, Phoenix, Arizona, USA (2016.9.25-28)
  4. Tetta Maeda, Ryo Suenaga, Kazuyoshi Suzuki, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: "Free Viewpoint Video for Sports Events Using Multi-resolution Visual Hull and Micro-facet Billboarding", 2016 International Workshop on Smart Info-media System in Asia (SISA 2016), Audiovisual Multimedia Fundamentals and Applications (IPSJ-AVM Special Session), SS3-5, Poster, Ayuthaya, Thailand (2016.9.14-17)

Award

  1. Tetta Maeda, 2016 International Workshop on Smart Info-media System in Asia (SISA 2016), AVM Special Session Best Student Paper Award, -- Tetta Maeda, Ryo Suenaga, Kazuyoshi Suzuki, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: "Free Viewpoint Video for Sports Events Using Multi-resolution Visual Hull and Micro-facet Billboarding" -- (2016.9.14-17)

The fiscal year of 2015

International Conference

  1. Yuki Uchida, Keita Takahashi, Toshiaki Fujii: Super-resolution Image Synthesis from a Light Field Camera Using the Hexagonal Pixel Arrangement and Sparsity of Edges", International Workshop on Advanced Image Technology, P.2B-4, Poster, Busan, Korea/Pukyong National University (2016.1.6-8)
  2. Sho Nishimura, Shunsuke Yamada, Keita Takahashi, Toshiaki Fujii, "Real-Time View Synthesis System Using Active Illumination and Adaptive Space-Time Cost-Volume Filtering", APSIPA Annual Summit and Conference, TP2-5.3, pp. 654--658, Oral, Hong Kong/The Hong Kong Polytechnic University (2015.12.16-19)
  3. Yusuke Miyagi, Keita Takahashi, Mehrdad Panapour Tehrani, Toshiaki Fujii, "Reconstruction of Compressively Sampled Light Fields Using a Weighted 4D-DCT Basis", IEEE International Conference on Image Processing (ICIP), TEC-O1.1, Oral, Quebec City, Canada, (2015.9.27-30).
  4. Keita Takahashi, Toyohiro Saito, Mehrdad Panapour Tehrani, Toshiaki Fujii, "Rank Analysis of a Light Field for Dual-Layer 3D Displays", IEEE International Conference on Image Processing (ICIP), NEW-P1.4, Poster, Quebec City, Canada, (2015.9.27-30).
  5. Kazuki Ohashi, Keita Takahashi, Mehrdad Panapour Tehrani, Toshiaki Fujii, "Super-Resolution Image Synthesis Using the Physical Pixel Arrangement of a Light Field Camera", IEEE International Conference on Image Processing (ICIP), NEW-P1.3, Poster, Quebec City, Canada, (2015.9.27-30).
  6. Akio Ishikawa, Makoto Okui, Kenji Yamamoto, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: "Subjective Evaluation of Compression Performance of Synthesis Error Compensated Multiview Video plus Depth," The 1st International Conference on Advanced Imaging (ICAI2015), T108-02, Oral, pp. 650--653, National Center of Science, Tokyo, Japan (2015.6.17-19).
  7. Yudai Mase, Kazuyoshi Suzuki, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: "Precise Extraction of Players in a Soccer Game", The 1st International Conference on Advanced Imaging (ICAI2015), PB2-05, pp. 316--319, National Center of Science, Tokyo, Japan (2015.6.17-19).
  8. Shunsuke Yamada, Keita Takahashi, Kenji Sawada, Mehrdad Panahpour Tehrani, Toshiaki Fujii: "Free-viewpoint Video Synthesis from a Movable 2D Camera Array", The 1st International Conference on Advanced Imaging (ICAI2015), PB2-04, pp. 312--315, National Center of Science, Tokyo, Japan (2015.6.17-19).
  9. Takaaki Emori, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: "Data Format and View Synthesis for Free-viewpoint Video Streaming of Super Multiview Video", Picture Coding Symposium (PCS) 2015, P-2.22, Poster, pp. 129--133, Cairns, Australia (2015.5.31-2015.6.3)
  10. Tomoyuki Tezuka, Mehrdad Panahpour Tehrani, Kazuyoshi Suzuki, Keita Takahashi, Toshiaki Fujii: "View Synthesis Using Superpixel Based Inpainting Capable of Occlusion Handling and Hole Filling", Picture Coding Symposium (PCS) 2015, P-2.21, Poster, pp. 124--128, Cairns, Australia (2015.5.31-2015.6.3).
  11. Qiang Yao, Keita Takahashi, Mehrdad Panahpour Teherani, Toshiaki Fujii, "Jonit Directional-Positional Multiplexing for Light Field Acquistion by Kronecker Compressed Sensing," IEEE International Conference on on Acoustics, Speech and Signal Processing (ICASSP) 2015, IVMSP-L2.2, Oral, pp. 1171--1175, Brisbane, Australia, (2015.4.19-24)

The fiscal year of 2014

Academic Journal

  1. Tatsuro Mori, Keita Takahashi, Toshiaki Fujii: "Real-Time Free-Viewpoint Image Synthesis System Using Time Varying Projection", ITE Transactions on Media Technology and Applications, Vol. 2, No. 4, pp. 370--377 (2014.10.1).
  2. Qiang Yao, Keita Takahashi, Toshiaki Fujii: "Reconstruction of Compressively Sampled Ray Space by Statistically Weighted Model," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E97-A, No. 10, pp. 2064--2073 (2014.10.1).

International Conference

  1. Ryo Suenaga, Kazuyoshi Suzuki, Tomoyuki Tezuka, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: "A Practical Implementation of Free Viewpoint Video System for Soccer Games", IS&T/SPIE Electronic Imaging, Three-Dimensional Image Processing, Measurement (3DIPM), and Applications 2015, Paper 9393-15, San Francisco, USA (2015.2.8-12)
  2. Takaaki Emori, Mehrdad Panahpour Tehrani, Keita Takahashi, Toshiaki Fujii: " Free-Viewpoint Video Synthesis from Mixed Resolution Multi-View Images and Low Resolution Depth Maps ", IS&T/SPIE Electronic Imaging, Stereoscopic Displays and Applications XXVI, Paper 9391-43, San Francisco, USA (2015.2.8-12).
  3. Toyohiro Saito, Keita Takahashi, Mehrdad Panahpour Tehrani, Toshiaki Fujii: "Data Conversion from Multi-View Cameras to Layered Light Field Display for Aliasing-Free 3D Visualization", IS&T/SPIE Electronic Imaging, Stereoscopic Displays and Applications XXVI, Paper 9391-42, San Francisco, USA (2015.2.8-12).
  4. Keita Takahashi, Toshiaki Fujii: "Least MSE Regression for View Synthesis," International Conference on 3D Vision (3DV) 2014, pp. 385--392, Tokyo, Japan (2014.12.8-11).
  5. Kouta Takeuchi, Shinya Shimizu, Kensaku Fujii, Akira Kojima, Keita Takahashi, Toshiaki Fujii: "Scene-independent Super-resolution for Plenoptic Cameras," ACM SIGGRAPH 2014, Poster No. 87, Vancouver, Canada (2014.8.10-14).
  6. Kouta Takeuchi, Shinya Shimizu, Kensaku Fujii, Akira Kojima, Keita Takahashi, Toshiaki Fujii: "Vignetting Correction for Focused Plenoptic Cameras", IEEE International Conference on Computational Photography, Poster, Santa Clara, USA (2014.5.2-4).
  7. Kouta Takeuchi, Shinya Shimizu, Kensaku Fujii, Akira Kojima, Keita Takahashi, Toshiaki Fujii: "Wide Light Field Imaging for Plenoptic Cameras", IEEE International Conference on Computational Photography, Poster, Santa Clara, USA (2014.5.2-4).
  8. Mehrdad Panahpour Tehrani, Akio Ishikawa, Makoto Okui, Naomi Inoue, Keita Takahashi, Toshiaki Fujii: "Synthesis Error Compensated Multiview Video Plus Depth For Representation of Multiview Video", IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), IVMSP-L2.5, pp. 890--894, Frorence, Italy (2014.5.4-9).

The fiscal year of 2013

Academic Journal

  1. Qiang Yao, Keita Takahashi, Toshiaki Fujii: "Compressed Sensing of Ray Space for Free Viewpoint Image(FVI) Generation," ITE Transaction on Media Technology and Applications (MTA) , Vol. 2, No. 1, pp. 23--32 (2014.1.1).

International Conference

  1. Qiang Yao, Keita Takahashi, Toshiaki Fujii: "Reconstruction of compressively sampled ray space by using DCT basis and statistically-weighted L1 norm optimization," IS&T/SPIE Electronic Imaging 2014, Vol. 9020-34, Hilton San Francisco, California, USA (2014.2.2-6).
  2. Tatsuro Mori, Keita Takahashi, Toshiaki Fujii: "Development of free-viewpoint image synthesis system using time varying projection and spacetime stereo," IS&T/SPIE Electronic Imaging 2014, Vol. 9011-66, Hilton San Francisco, California, USA (2014.2.2-6).
  3. Tomoyuki Tezuka, Keita Takahashi, Toshiaki Fujii: "Superpixel-based 3D warping using view plus depth data from multiple viewpoints," IS&T/SPIE Electronic Imaging 2014, Vol. 9011-64, Hilton San Francisco, California, USA (2014.2.2-6).
  4. Kazuki Ohashi, Keita Takahashi, Toshiaki Fujii: "Joint estimation of high resolution images and depth maps from light field cameras," IS&T/SPIE Electronic Imaging 2014, Vol. 9011-60, Hilton San Francisco, California, USA (2014.2.2-6).
  5. Koichi Hamada, Ryo Nakashima, Keita Takahashi, Takeshi Naemura: "Super-Resolution with Adaptive Pixel Weighting Scheme and Its Application to Super-Resolved Free-Viewpoint Image Synthesis," Workshop on Image/video mediated Interactive Systems and Environment, 9th International Conference on Signal-Image Technology and Internet-Based Systems (SITIS 2013), pp. 757--764, Kyoto, Japan (2013.12.2-5).
  6. Ryo Nakashima, Keita Takahashi, Takeshi Naemura: "Super-Resolved Free-Viewpoint Image Synthesis Combined With Sparse-Representation-Based Super-Resolution," Asian-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC) 2013, OS.30-SPS.4, 85 Sky Tower Hotel, Kaohsiung, Taiwan (2013.10.29-11.1)
  7. Qiang Yao, Keita Takahashi, Toshiaki Fujii: "Overcomplete Compressed Sensing of Ray Space for Generating Free Viewpoint Images," Asian-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC) 2013, OS.30-SPS.4, 85 Sky Tower Hotel, Kaohsiung, Taiwan (2013.10.29-11.1)
  8. Kazuki Ohashi, Keita Takahashi, Toshiaki Fujii, "Joint Optimization of Super-Resolution and Disparity Estimation for Light Field Camera Images," International Workshop on Smart Info-Media Systems in Asia (SISA), SS-AVM-8, pp. 205--207, Nagoya (2013.9.30-10.2).
  9. Takaaki Emori, Keita Takahashi, Toshiaki Fujii, "Wavelet Domain Disparity Compensated Prediction for Smooth Viewpoint Change in Multi-view Video Streaming," International Workshop on Smart Info-Media Systems in Asia (SISA), SS-AVM-7, pp. 201--204, Nagoya (2013.9.30-10.2).
  10. Tomoyuki Tezuka, Keita Takahashi, Toshiaki Fujii, "3D Visualization from View plus Depth Data Using Superpixel Representations," International Workshop on Smart Info-Media Systems in Asia (SISA), SS-AVM-6, pp. 198--200, Nagoya (2013.9.30-10.2). [AVM Special Session Best Student Paper Award (Tezuka)]
  11. Keita Takahashi: "View Interpolation Sensitive to Pixel Positions," IEEE International Conference on Image Processing (ICIP), pp. 2207--2211, Melbourne, Australia (2013.9.15-18).

Award

  1. Tomoyuki Tezuka, Keita Takahashi, Toshiaki Fujii, "3D Visualization from View plus Depth Data Using Superpixel Representations," International Workshop on Smart Info-Media Systems in Asia (SISA), SS-AVM-6, pp. 198--200, Nagoya (2013.9.30-10.2). [AVM Special Session Best Student Paper Award (Tezuka)]
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