Ryosei Hara

Publications

A full list of publications. See also the interactive publications page and my Google Scholar profile.

Journal

2026

  1. Hara, Ryosei and Ikeda, Wataru and Hatano, Masashi and Isogawa, Mariko, “EventEgoHands++: Event-based Egocentric 3D Hand Mesh Reconstruction With Real Dataset,” IEEE Access, 2026. [DOI] [Project] [Code] [arXiv]

Conference

2026

  1. Oishi*, Kotaro and Ikeda*, Kazuma and Hara, Ryosei and Yoshida, Ryo and Isogawa†, Mariko and Yoshioka†, Kentaro, “Towards Real-Time Full-Waveform LiDAR Transformers via Intensity-Guided Token Reduction and Physics-Aware Augmentation,” Neural Information Processing Systems (NeurIPS), 2026. (Top Conference in machine learning, Acceptance Rate: 25.7%, Poster presentation)
    * Equal contribution. Either author may list their name first in CVs and other academic materials. † Co-corresponding authors.
  2. Ikeda*, Kazuma and Hara*, Ryosei and Nagata, Rokuto and Sako, Ozora and Ding, Zihao and Kado, Takahiro and Fujioka, Ibuki and Beppu, Taro and Isogawa, Mariko and Yoshioka, Kentaro, “Ghost-FWL: A Large-Scale Full-Waveform LiDAR Dataset for Ghost Detection and Removal,” IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2026. (Top Conference in Computer Vision, h5-index=450, Acceptance Rate: 25.42%)
    * Equal contribution. Either author may list their name first in CVs and other academic materials.     [Project] [Paper] [Supp] [Code] [arXiv] [Video]
  3. Ishida, Ryotaro and Ikeda, Wataru and Hara, Ryosei and Kobayashi, Akemi and Kimura, Toshitaka and Isogawa, Mariko, “Event-Based Batting Impact Estimation,” IEEE International Conference on Image Processing (ICIP), 2026. (Acceptance Rate: 38.6%) [DOI] [Project] [arXiv]

2025

  1. Hara, Ryosei and Ikeda, Wataru and Hatano, Masashi and Isogawa, Mariko, “EventEgoHands: Event-based Egocentric 3D Hand Mesh Reconstruction,” IEEE International Conference on Image Processing (ICIP), 2025. Oral Presentation (Acceptance Rate: 39.6%) [DOI] [Project] [Supp] [Code] [arXiv]
  2. Ikeda, Wataru and Hatano, Masashi and Hara, Ryosei and Isogawa, Mariko, “Event-based Egocentric Human Pose Estimation in Dynamic Environment,” IEEE International Conference on Image Processing (ICIP), 2025. (Acceptance Rate: 39.6%) [DOI] [Project] [Supp] [arXiv]

Preprint

2026

  1. Hara, Ryosei and Hatano, Masashi and Yanagi, Rintaro and Hashimoto, Atsushi and Yagi, Takuma and Isogawa, Mariko, “Hand Visibility Detector: Per-Keypoint Visibility Estimation for Hands,” 2026. [Code] [arXiv] [Demo]

Software

2026

  1. Hara, Ryosei, “hamer-mini,” 2026. python package for HaMeR [Code]

Domestic

2026

  1. 原涼成 and 波多野雅 and 柳凜太郎 and 橋本敦史 and 八木拓真 and 五十川麻理子, “未校正の多視点カメラからの三次元手指形状推定,” 第29回 画像の認識・理解シンポジウム, 2026.
  2. 大石康太郎 and 池田和真 and 原涼成 and 吉岡健太郎 and 五十川麻理子, “Full-Waveform LiDARデータのトークン削減に関する一検討,” 第29回 画像の認識・理解シンポジウム, 2026.
  3. 池田航 and 原涼成 and 出口裕之 and 波多野雅 and 堀涼介 and 斎藤英雄 and 五十川麻理子, “イベントカメラを活用した三次元人物・手指形状復元,” 第40回 人工知能学会全国大会, 2026. オーガナイズドセッション口頭発表論文．OS-26 ひと中心の未来社会とAI ー テクノロジー受容と未来の暮らし [DOI]
  4. 池田和真 and 原涼成 and 永田禄人 and 佐古大空 and 丁梓浩 and 加戸貴洋 and 藤岡威吹 and 別府太郎 and 五十川麻理子 and 吉岡健太郎, “Ghost-FWL:ゴースト検出・除去のための大規模フルウェーブフォームLiDARデータセットとフレームワーク,” 第32回画像センシングシンポジウム（SSII2026）, 2026. スポットライトセッション SO2-02 (Oral) およびインタラクティブセッション IS 2-02 (Poster)
  5. Ishida, Ryotaro and Ikeda, Wataru and Hara, Ryosei and Kobayashi, Akemi and Kimura, Toshitaka and Isogawa, Mariko, “Robust Impact Timing Estimation in Sports under Low-Light and Occluded Conditions,” 研究報告スポーツ情報学（SI）, 2026. [Website]

2025

  1. Hara, Ryosei and Ikeda, Wataru and Hatano, Masashi and Isogawa, Mariko, “EventEgoHands: Event-based Egocentric 3D Hand Mesh Reconstruction,” Meeting on Image Recognition and Understanding (MIRU), 2025. MIRU Student Encouragement Award 🏆️ Oral Presentation (Acceptance Rate: 34.5%)
  2. Ikeda, Wataru and Hatano, Masashi and Hara, Ryosei and Isogawa, Mariko, “Event-based Egocentric Human Pose Estimation in Dynamic Environment,” Meeting on Image Recognition and Understanding (MIRU), 2025. Oral Presentation (Acceptance Rate: 34.5%)
  3. 石田遼太郎 and 池田航 and 原涼成 and 小林明美 and 木村聡貴 and 五十川麻理子, “イベントカメラを用いたバッティングのインパクトタイミング推定,” Sports Informatics and Technology (SIT), 2025. [DOI]

2024

  1. 原涼成 and 池田航 and 五十川麻理子, “動的背景下におけるイベントカメラを用いた三次元人物手指形状推定,” 画像の認識・理解シンポジウム (MIRU), 2024. Demo Category

Award

2026

  1. 村上尚生* and 馬上凌* and 原涼成* and 大石康太郎* and 丸山虹樹*, “データセット構築研究　「採択されるデータセット論文を書くために」,” MIRU2026 若手プログラム, 2026. MIRU2026 若手プログラム 最優秀賞 🏆️ * Equal contribution [PDF] [Website]

2025

  1. Hara, Ryosei and Ikeda, Wataru and Hatano, Masashi and Isogawa, Mariko, “EventEgoHands: Event-based Egocentric 3D Hand Mesh Reconstruction,” Meeting on Image Recognition and Understanding (MIRU), 2025. MIRU Student Encouragement Award 🏆️ Oral Presentation (Acceptance Rate: 34.5%)

Talk

2026

  1. 池田和真* and 原涼成*, “Ghost-FWL:ゴースト検出・除去のための大規模フルウェーブフォームLiDARデータセットとフレームワーク,” 第25回情報科学技術フォーラム (FIT2026), 2026. トップコンファレンスセッション：トップコンファレンス6-1 画像工学 （*: 共同で講演）
    Original paper presented at CVPR 2026. *Equal contribution     [Website]
  2. Ikeda*, Kazuma and Hara*, Ryosei and Nagata, Rokuto and Sako, Ozora and Ding, Zihao and Kado, Takahiro and Fujioka, Ibuki and Beppu, Taro and Isogawa, Mariko and Yoshioka, Kentaro, “Ghost-FWL: A Large-Scale Full-Waveform LiDAR Dataset for Ghost Detection and Removal,” The 29th Meeting on Image Recognition and Understanding (MIRU2026), 2026. Original paper presented at CVPR 2026. *Equal contribution [Website]