Publication

M. A. Alsherfawi Aljazaerly, C. Xu, S. Wu, X. Li, Y. Yagi, ``Three-dimensional Human Model-Guided View Morphing for Clothed Gait Silhouettes,'' IEEE Access, Vol. 13, pp. 31949-31962, Feb. 2025.

X. Li, Y. Makihara, C. Xu, Y. Yagi, "GaitAGE: Gait Age and Gender Estimation Based on an Age- and Gender-Specific 3D Human Model," in IEEE Transactions on Biometrics, Behavior, and Identity Science (T-BIOM), vol. 7, no. 1, pp. 47-60, Jan. 2025

B. Huang, C. Zhou, L. He, C. Xu, J. Pan, ``GaitCTCG: cross-view gait recognition via cascaded residual temporal shift and comprehensive multi-granularity learning,'' Applied Intelligence, Vol. 54, No. 3, pp. 2428-2444, Feb. 2024.

C. Xu, Y. Makihara, X. Li, Y. Yagi, ``Occlusion-aware Human Mesh Model-based Gait Recognition,'' IEEE Transactions on Information Forensics and Security, Vol. 18, pp. 1309-1321, Jan. 2023.

X. Li, Y. Makihara, C. Xu, Y. Yagi, ``Multi-view Large Population Gait Database with Human Meshes and Its Performance Evaluation,'' IEEE Transactions on Biometrics, Behavior, and Identity Science (T-BIOM), Vol. 4, No. 2, pp. 234-248, Apr. 2022.

C. Xu, A. Sakata, Y. Makihara, N. Takemura, D. Muramatsu, Y. Yagi, ``Uncertainty-aware Gait-based Age Estimation and Its Applications,'' IEEE Transactions on Biometrics, Behavior, and Identity Science (T-BIOM), Vol. 3, No. 4, pp. 479-494, Oct. 2021.

C. Xu, Y. Makihara, X. Li, Y. Yagi, J. Lu, ``Cross-View Gait Recognition using Pairwise Spatial Transformer Networks,'' IEEE Transactions on Circuits and Systems for Video Technology, Vol. 31, No. 1, pp. 260-274, Jan. 2021.

W. An, S. Yu, Y. Makihara, X. Wu, C. Xu, Y. Yu, R. Liao, Y. Yagi, ``Performance Evaluation of Model-based Gait on Multi-view Very Large Population Database with Pose Sequences,'' IEEE Transactions on Biometrics, Behavior, and Identity Science (T-BIOM), Vol. 2, No. 4, pp. 421-430, Oct. 2020.

X. Li, Y. Makihara, C. Xu, Y. Yagi, M. Ren, ``Gait Recognition Invariant to Carried Objects using Alpha Blending Generative Adversarial Networks,'' Pattern Recognition, Vol. 105, No. 107376, pp. 1-12, Sep. 2020.

X. Li, Y. Makihara, C. Xu, Y. Yagi, M. Ren, ``Joint Intensity Transformer Network for Gait Recognition Robust against Clothing and Carrying Status,'' IEEE Transactions on Information Forensics and Security, Vol. 14, No. 12, pp. 3102-3115, Dec. 2019.

C. Xu, Y. Makihara, X. Li, Y. Yagi, J. Lu, ``Speed-Invariant Gait Recognition using Single-Support Gait Energy Image,'' Multimedia Tools and Applications, Vol. 78, No. 18, pp. 26509-26536, Sep. 2019.

C. Xu, Y. Makihara, Y. Yagi, J. Lu, ``Gait-based Age Progression/Regression: A Baseline and Performance Evaluation by Age Group Classification and Cross-age Gait Identification,'' Machine Vision and Applications, Vol. 30, No. 4, pp. 629-644, Jun. 2019.

X. Li, Y. Makihara, C. Xu, Y. Yagi, M. Ren, ``Gait-based Human Age Estimation using Age Group-dependent Manifold Learning and Regression,'' Multimedia Tools and Applications, Vol. 77, No. 21, pp. 28333-28354, Nov. 2018.

X. Li, Y. Makihara, C. Xu, D. Muramatsu, Y. Yagi, M. Ren, ``Gait Energy Response Functions for Gait Recognition against Various Clothing and Carrying Status,'' Applied Science, Vol. 8, No. 1380, pp. 1-22, Aug. 2018.

C. Xu, Y. Makihara. G. Ogi, X. Li, Y. Yagi, J. Lu, ``The OU-ISIR Gait Database Comprising the Large Population Dataset with Age and Performance Evaluation of Age Estimation,'' IPSJ Trans. on Computer Vision and Applications, Vol. 9, No. 24, pp. 1-14, Dec. 2017.

C. Xu, X. Li, S. Wu, Y. Yagi, “EEG-based User Authentication in Realistic Scenarios: From Solo Reading to Dialog Games,” Proc. of the 9th IEEE International Joint Conference on Biometrics (IJCB 2025), Osaka, Japan, Sep. 2025.

X. Li, C. Xu, Y. Yagi, “Towards Robust and Efficient Continuous Face Authentication via Disentangled Representation Learning and Adaptive Identity Completion,” Proc. of the 9th IEEE International Joint Conference on Biometrics (IJCB 2025), Osaka, Japan, Sep. 2025.

Z. Li, C. Xu, X. Li, S. Wu, Y. Yagi, ``Is Multi-Person Gait Recognition Feasible under Mutual Occlusion? A Human Model Regression-based Approach,'' Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops, Nashville, Jun. 2025.

T. Okimura, X. Li, C. Xu, Y. Yagi, ``On Cropping for Gait Recognition: Does Constant-velocity Locomotion Assumption Improve Gait Recognition Accuracy?,'' Proc. of the 8th The IEEE International Joint Conference on Biometrics (IJCB 2024), Buffalo, New York, USA, Sep. 2024.

C. Xu, S. Tsuji, Y. Makihara, X. Li, Y. Yagi, ``Occluded Gait Recognition via Silhouette Registration Guided by Automated Occlusion Degree Estimation,'' Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV) Workshops, Paris, Oct. 2023.

C. Xu, Y. Makihara, X. Li, Y. Yagi, ``Gait Recognition From Fisheye Images,'' Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops, Vancouver, pp. 1030-1040, Jun. 2023.

B. Huang, C. Zhou, C. Xu, J. Pan, ``GaitMSTP: Multi-Granularity Spatio-Temporal Pyramid for Gait Recognition Under Complex Covariation Conditions,'' Proc. of 2022 IEEE International Joint Conference on Biometrics (IJCB 2022), Abu Dhabi, United Arab Emirates, pp. 1-8, Oct. 2022.

X. Li, Y. Makihara, C. Xu, Y. Yagi, ``End-to-end Model-based Gait Recognition using Synchronized Multi-view Pose Constraint,'' 2021 IEEE/CVF International Conference on Computer Vision (ICCV) Workshops, online, pp. 4106-4115, Oct. 2021.

C. Xu, Y. Makihara, R. Liao, H. Niitsuma, X. Li, Y. Yagi, J. Lu, ``Real-Time Gait-Based Age Estimation and Gender Classification from a Single Image,'' Proc. of the IEEE Winter Conf. on Applications of Computer Vision 2021 (WACV 2021), online, pp. 1-11, Jan. 2021.

X. Li, Y. Makihara, C. Xu, Y. Yagi, S. Yu, M. Ren, ``End-to-end Model-based Gait Recognition,'' Proc. of the 15th Asian Conf. on Computer Vision (ACCV 2020), Kyoto, Japan (online), pp. 3-20, Dec. 2020.

C. Xu, D. Adachi, Y. Makihara, Y. Yagi, J. Lu, ``DeformGait: Gait Recognition under Posture Changes using Deformation Patterns between Gait Feature Pairs,'' Proc. of the 4th Int. Joint Conference on Biometrics (IJCB 2020), online, pp. 1-10, Sep. 2020.

C. Xu, Y. Makihara, X. Li, Y. Yagi, J. Lu, ``Gait Recognition from a Single Image using a Phase-Aware Gait Cycle Reconstruction Network,'' Proc. of the 16th European Conf. on Computer Vision (ECCV 2020), Glasgow, UK (online), pp. 386-403, Aug. 2020.

X. Li, Y. Makihara, C. Xu, Y. Yagi, M. Ren, ``Gait Recognition via Semi-supervised Disentangled Representation Learning to Identity and Covariate Features,'' Proc. the 33rd IEEE Conf. on Computer Vision and Pattern Recognition (CVPR 2020), Seattle, WA, USA (online), pp. 13309-13319, Jun. 2020.

X. Li, Y. Makihara, C. Xu, Y. Yagi, M. Ren, ``Make the Bag Disappear: Carrying Status-invariant Gait-based Human Age Estimation using Parallel Generative Adversarial Networks,'' Proc. of the IEEE 10th Int. Conf. on Biometrics: Theory, Applications and Systems (BTAS 2019), Tampa, Florida, USA, Sep. 2019.

Y. Makihara, D. Adachi, C. Xu, Y. Yagi, ``Gait Recognition by Deformable Registration,'' Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops, Salt Lake City, Utah, USA, pp. 674-684, Jun. 2018.

H. El-Alfy, C. Xu, Y. Makihara, D. Muramatsu, Y. Yagi, ``A Geometric View Transformation Model using Free-form Deformation for Cross-view Gait Recognition,'' In Proc. of the 4th Asian Conf. on Pattern Recognition (ACPR 2017), Nanjing, China, pp. 929-934, Nov. 2017.

C. Xu, Y. Makihara, X. Li, Y. Yagi, and J. Lu, ``Speed Invariance vs. Stability: Cross-Speed Gait Recognition using Single-Support Gait Energy Image,'' Proc. of the 13th Asian Conf. on Computer Vision (ACCV 2016), pp. 52-67, Taipei, Taiwan, Nov. 2016.

X. Li, Y. Makihara, C. Xu, D. Muramatsu, Y. Yagi, and M. Ren, ``Gait Energy Response Function for Clothing-invariant Gait Recognition,'' Proc. of the 13th Asian Conf. on Computer Vision (ACCV 2016), pp. 257-272, Taipei, Taiwan, Nov. 2016.

C. Xu, X. Li, A. Shehata, Y. Yagi, “The OU-ISIR Multimodal Biometric Database and Its Performance Evaluation,” The 28th SANKEN International Symposium, Awaji, No. 39, Jan. 2025.

X. Li, C. Xu, Y. Yagi, “The OU-ISIR continuous authentication database comprising face and speech biometrics,” The 28th SANKEN International Symposium, Awaji, No. 38, Jan. 2025.

C. Xu, Y. Makihara, X. Li, Y. Yagi, “Occlusion-aware human mesh model-based gait recognition,” The 27th SANKEN International Symposium, Awaji, pp. 24, Jan. 2024.

C. Xu, S. Tsuji, Y. Makihara, X. Li, Y. Yagi, “Occluded Gait Recognition via Silhouette Registration Guided by Automated Occlusion Degree Estimation,” The 27th SANKEN International Symposium, Awaji, pp. 49, Jan. 2024.

X. Li, Y. Makihara, C. Xu, Y. Yagi, “Multi-view Large Population Gait Database with Human Meshes and Its Performance Evaluation,” The 26th SANKEN International Symposium, Suita, Japan, 2023.

C. Xu, Y. Makihara, R. Liao, H. Niitsuma, X. Li, Y. Yagi, J. Lu, “Real-Time Gait-Based Age Estimation and Gender Classification from a Single Image,” The 25th SANKEN International Symposium, online, Jan. 2022.

X. Li, Y. Makihara, C. Xu, Y. Yagi, “End-to-end Model-based Gait Recognition using Synchronized Multi-view Pose Constraint,” The 25th SANKEN International Symposium, online, Jan. 2022.

X. Li, Y. Makihara, C. Xu, D. Muramatsu, Y. Yagi, M. Ren, “Gait Energy Response Functions for Gait Recognition against Various Clothing and Carrying Status,” Proc. of the 13th International Workshop on Robust Computer Vision, Beijing, China, Jan. 2019.

C. Xu, Y. Makihara, G. Ogi, X. Li, Y. Yagi, J. Lu, “The OU-ISIR Gait Database Comprising the Large Population Dataset with Age and Performance Evaluation of Age Estimation,” Proc. of the 13th International Workshop on Robust Computer Vision, Beijing, China, Jan. 2019.

Y. Makihara, D. Adachi, C. Xu, Y. Yagi, “Gait Recognition by Deformable Registration,” Proc. of the 13th International Workshop on Robust Computer Vision, Beijing, China, Jan. 2019.

C. Xu, Y. Makihara, G. Ogi, X. Li, Y. Yagi, J. Lu, “The OU-ISIR Gait Database Comprising the Large Population Dataset with Age and Performance Evaluation of Age Estimation,” Proc. of the 22nd SANKEN International Symposium, Suita, Japan, Jan. 2019.

H. El-Alfy, C. Xu, Y. Makihara, D. Muramatsu, Y. Yagi, “A Geometric View Transformation Model using Free-form Deformation for Cross-view Gait Recognition,” Proc. of the 12th International Workshop on Robust Computer Vision, Nara, Japan, pp. 19, Jan. 2018.

X. Li, Y. Makihara, C. Xu, D. Muramatsu, Y. Yagi, M. Ren, “Gait Energy Response Function for Clothing-invariant Gait Recognition,” In Proc. of The 11th International Workshop on Robust Computer Vision (IWRCV 2016), Daejeon, Korea, Dec. 2016.

C. Xu, Y. Makihara, X. Li, Y. Yagi, J. Lu, “Speed Invariance vs. Stability: Cross-Speed Gait Recognition Using Single-Support Gait Energy Image,” In Proc. of The 11th International Workshop on Robust Computer Vision (IWRCV 2016), Daejeon, Korea, Dec. 2016.

X. Li, Y. Makihara, C. Xu, D. Muramatsu, Y. Yagi, M. Ren, “Gait Energy Response Function for Clothing-invariant Gait Recognition,” In Proc. of the 20th Sanken Int. Symposium, Osaka, Japan, Dec. 2016.

C. Xu, Y. Makihara, X. Li, Y. Yagi, J. Lu, “Speed Invariance vs. Stability: Cross-Speed Gait Recognition Using Single-Support Gait Energy Image,” In Proc. of the 20th Sanken Int. Symposium, Osaka, Japan, Dec. 2016.

Z. Li, C. Xu, X. Li, S. Wu, Y. Yagi, “Model-based Multi-person Gait Recognition under Mutual Occlusion,” 第28回 画像の認識・理解シンポジウム (MIRU2025), 京都, No. IS3-161, Aug. 2025.

C. Xu, X. Li, A. Shehata, Y. Yagi, “The OU-ISIR Multimodal Biometric Database and Its Performance Evaluation,” 第14回バイオメトリクスと認識・認証シンポジウム (SBRA 2024), 渋川, No. PS1-12, Dec. 2024.

X. Li, C. Xu. Y. Yagi, “The OU-ISIR continuous authentication database comprising face and speech biometrics,” 第14回バイオメトリクスと認識・認証シンポジウム (SBRA 2024), 渋川, No. PS1-09, Dec. 2024.

R. Zhang, X. Li, C. Xu, Y. Yagi, “Multi-View Large Population Gait Database with Point Clouds and Its Performance Evaluation for LiDAR-based Gait Recognition,” 第27回 画像の認識・理解シンポジウム (MIRU2024), 熊本, No. IS3-106, Aug. 2024.

K. Shintani, X. Li, C. Xu, Y. Yagi, “Correlation Analysis among Face, Voice, Body, and Palm Vein Biometrics Toward Cross-modal Biometric Authentication,” 第27回 画像の認識・理解シンポジウム (MIRU2024), 熊本, No. IS1-156, Aug. 2024.

C. Xu, X. Li, A. Shehata, Y. Yagi, “The OU-ISIR Multimodal Biometric Database and Its Performance Evaluation,” 第27回 画像の認識・理解シンポジウム (MIRU2024), 熊本, No. IS1-155, Aug. 2024.

X. Li, C. Xu. Y. Yagi, “The OU-ISIR continuous authentication database comprising face and speech biometrics,” 第27回 画像の認識・理解シンポジウム (MIRU2024), 熊本, No. IS1-154, Aug. 2024.

X. Li, C. Xu, Y. Yagi, “The OU-ISIR continuous authentication database comprising face and speech biometrics,” 研究報告コンピュータセキュリティ（CSEC）, 札幌, Vol. 2024-CSEC-106, No. 10, pp. 1-6, Jul. 2024.

C. Xu, X. Li, A. Shehata, Y. Yagi, “The OU-ISIR multimodal biometric database and its performance evaluation,” 研究報告コンピュータセキュリティ（CSEC）, 札幌, Vol. 2024-CSEC-106, No. 9, pp. 1-6, Jul. 2024.

C. Xu, S. Tsuji, Y. Makihara, L. Xiang, Y. Yagi, “Occluded Gait Recognition via Silhouette Registration Guided by Automated Occlusion Degree Estimation,” 第13回バイオメトリクスと認識・認証シンポジウム (SBRA 2023), 武蔵野, No. PS1-15, pp. 1-6, Nov. 2023.

C. Xu, Y. Makihara, X. Li, Y. Yagi, “Gait Recognition from Fisheye Images,” 第13回バイオメトリクスと認識・認証シンポジウム (SBRA 2023), 武蔵野, No. PS1-16, pp. 1-6, Nov. 2023.

C. Xu, Y. Makihara, X. Li, Y. Yagi, “Occlusion-Aware Human Mesh Model-Based Gait Recognition,” 第13回バイオメトリクスと認識・認証シンポジウム (SBRA 2023), 武蔵野, No. PS1-17, pp. 1, Nov. 2023.

X. Li, Y. Makihara, C. Xu, Y. Yagi, “Multi-view Large Population Gait Database with Human Meshes and Its Performance Evaluation,” 第13回バイオメトリクスと認識・認証シンポジウム (SBRA 2023), 武蔵野, No. PS1-14, pp. 1-6, Nov. 2023.

辻 翔吾, 徐 遅, 槇原 靖, 八木 康史, “人体の観測欠落割合推定に基づく部分隠蔽に頑健な歩容認証,” 研究報告コンピュータビジョンとイメージメディア（CVIM）, 生駒, Vol. 2023-CVIM-232, No. 11, pp. 1-8, Jan. 2023.

安達 大輔, 槇原 靖, 徐 遅, 八木 康史, “個人内変形モデルによる姿勢変化に頑健な歩容認証,” 第35回OACISシンポジウム, 吹田, Nov. 2018.

安達 大輔, 槇原 靖, 徐 遅, 八木 康史, “個人内変形モデルによる姿勢変化に頑健な歩容認証,” 2018年5月コンピュータビジョンとイメージメディア研究会, 吹田, Vol. 2018-CVIM-212, No. 25, pp. 1-8, May 2018.

H. El-Alfy, C. Xu, Y. Makihara, D. Muramatsu, Y. Yagi, “A Geometric View Transformation Model using Free-form Deformation for Cross-view Gait Recognition,” The 7th Symposium on Biometrics, Recognition and Authentication (SBRA 2017), IEICE, Tokyo, pp. 56-57, Nov. 2017.

X. Li, Y. Makihara, C. Xu, D. Muramatsu, Y. Yagi, M. Ren, “Gait Energy Response Function for Clothing-invariant Gait Recognition,” 第6回バイオメトリクスと認識・認証シンポジウム, 東京, Nov. 2016.

C. Xu, Y. Makihara, X. Li, Y. Yagi, J. Lu, “Speed Invariance vs. Stability: Cross-Speed Gait Recognition Using Single-Support Gait Energy Image,” 第6回バイオメトリクスと認識・認証シンポジウム, 東京, Nov. 2016.

徐 遅, 李 想, 廖 若辰, ``映像分析を通じた人間の健康指標推定と個人認証に関するAI技術の研究動向,'' 映像情報メディア学会誌2025年7月（特集「精神健康を見守るためのセンシング技術」，第1章）.

槇原 靖，李 想，徐 遅，八木 康史，Jiangfeng Lu, ``人体モデル当てはめによる高精度歩容認証,'' 画像ラボ, Vol. 33, No. 3, pp. 5-15, Mar. 2022.

槇原 靖, 徐 遅, 李 想, 八木 康史, Jiangfeng Lu, ``単一画像による歩容認証,'' 画像ラボ, Vol. 32, No. 9, pp. 12-17, Sep. 2021.

槇原 靖，村松 大吾，武村 紀子，モハマド ザシム ウディン，徐 遅，越後 富夫，チュン タン ゴ，李 想，荻 岳仁，八木 康史, ``大規模歩行映像データベースの構築とその歩行映像解析への応用,'' 画像ラボ, Vol. 30, No. 3, pp. 11-17, Mar. 2019.