Search Results 1-20 of 67

  • 1 / 4
  • Development of Mm2cML Software to Facilitate the Preparation of a 3D File Applicable to Computational Analysis Using aMolecular Model Kit  [in Japanese]

    YABE Makoto , CHIN Kain , UEDA Kazuyoshi , TAKEDA Minoru

    … を用いれば,対象とする分子模型の2次元画像データから3次元構造ファイル構築を経て計算化学的解析へと展開することができる.本プログラムはウェブアプリケーションであり,Structure from MotionおよびMulti-View Stereoの手法に,ウェブインターフェースを組み合わせたのが特徴である.ソフトウェアによって構築した3次元構造ファイルを用いて量子化学計算を実行し,その有効性を確認した.</p> …

    Journal of Computer Chemistry, Japan 19(1), 18-24, 2020

    J-STAGE 

  • [Papers] Keep Your Eye on the Ball: Detection of Kicking Motions in Multi-view 4K Soccer Videos

    Xu Jianfeng , Tasaka Kazuyuki

    … <p>For automated game analysis, it is essential to detect the kicking motions of players in soccer videos in order to understand each player's actions. … This paper presents a fast and accurate approach to detecting kicking motions with a ball-centric window in multi-view 4K soccer videos. … The first challenge is that it is basically too computationally heavy to process the massive amount of data in multi-view 4K videos. …

    ITE Transactions on Media Technology and Applications 8(2), 81-88, 2020

    J-STAGE 

  • Analysis of displayable depth range for retinal projection type super multi-view 3D head-mounted display using the time division projection optical system

    Maeda Hiroaki , Kohno Junya , Yoshimoto Kayo , Takahashi Hideya

    … We have previously proposed the retinal projection type super multi-view head-mounted display (HMD) using the time division projection optical system. … By using the super multi-view HMD, it is possible to provide the viewer with the 3D image that induces the accommodation of a human eye naturally. …

    Proceedings of SPIE : the International Society for Optical Engineering (10942), 109420X, 2019-03-01

    IR 

  • Representative Spatial Selection and Temporal Combination for 60fps Real-Time 3D Tracking of Twelve Volleyball Players on GPU

    CHENG Xina , ZHAO Yiming , IKENAGA Takeshi

    … <p>Real-time 3D players tracking plays an important role in sports analysis, especially for the live services of sports broadcasting, which have a strict limitation on processing time. … For these kinds of applications, 3D trajectories of players contribute to high-level game analysis such as tactic analysis and commercial applications such as TV contents. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E102.A(12), 1882-1890, 2019

    J-STAGE 

  • A Study for Player Tracking in Basketball Analysis using Multi-View Image Sequences  [in Japanese]

    谷川 修司 , 田川 憲男

    映像情報メディア学会技術報告 = ITE technical report 42(44), 31-34, 2018-12

  • A Study for Player Tracking in Basketball Analysis using Multi-View Image Sequences  [in Japanese]

    安田 航也 , 田川 憲男 , 大久保 寛 , 何 宜欣

    映像情報メディア学会技術報告 = ITE technical report 42(6), 81-84, 2018-02

  • 3D monitoring for plant growth parameters in field with a single camera by multi-view approach

    Yu ZHANG , Poching TENG , AONO Mitsuko , SHIMIZU Yo , HOSOI Fumiki , OMASA Kenji

    … In this study on growth analysis of sweet potato (<i>Ipomoea batatas</i> … In contrast, the average percentage error in 2D image processing was 20% to 45% for leaf number and 60% to 90% for leaf area, and the leaf height was immeasurable. …

    Journal of Agricultural Meteorology 74(4), 129-139, 2018

    J-STAGE 

  • Multi-Peak Estimation for Real-Time 3D Ping-Pong Ball Tracking with Double-Queue Based GPU Acceleration

    DENG Ziwei , HOU Yilin , CHENG Xina , IKENAGA Takeshi

    … <p>3D ball tracking is of great significance in ping-pong game analysis, which can be utilized to applications such as TV contents and tactic analysis, with some of them requiring real-time implementation. … This paper proposes a CPU-GPU platform based Particle Filter for multi-view ball tracking including 4 proposals. … The multi-peak estimation and the ball-like observation model are proposed in the algorithm design. …

    IEICE Transactions on Information and Systems E101.D(5), 1251-1259, 2018

    J-STAGE 

  • Sheared EPI Analysis for Disparity Estimation from Light Fields

    SUZUKI Takahiro , TAKAHASHI Keita , FUJII Toshiaki

    … <p>Structure tensor analysis on epipolar plane images (EPIs) is a successful approach to estimate disparity from a light field, i.e. a dense set of multi-view images. … To overcome this limitation, we developed a new method called sheared EPI analysis, where EPIs are sheared before the structure tensor analysis. …

    IEICE Transactions on Information and Systems E100.D(9), 1984-1993, 2017

    J-STAGE 

  • 3D MODEL RECONSTRUCTION BY SfM-MVS AND ITS APPLICATION TO DETECTION OF BUILDINGS DAMAGED DUE TO EARTHQUAKES  [in Japanese]

    KAWANO Hiroyuki , MATSUOKA Masashi , MAKI Norio , HORIE Kei

    … Most of the techniques use a vertical shot, taken from a satellite or an airplane, and the building damage is extracted using image-processing technologies. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 82(735), 775-782, 2017

    J-STAGE 

  • Multi-View 3D Ball Tracking with Abrupt Motion Adaptive System Model, Anti-Occlusion Observation and Spatial Density Based Recovery in Sports Analysis

    CHENG Xina , IKOMA Norikazu , HONDA Masaaki , IKENAGA Takeshi

    … <p>Significant challenges in ball tracking of sports analysis by computer vision technology are: 1) accuracy of estimated 3D ball trajectory under difficult conditions; … With the goal of multi-view 3D ball tracking, this paper proposes an abrupt motion adaptive system model, an anti-occlusion observation model, and a spatial density-based automatic recovery based on particle filter. …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E100.A(5), 1215-1225, 2017

    J-STAGE 

  • A Study for Ball Tracking in Basketball Analysis using Multi-View Image Sequences  [in Japanese]

    安田 航也 , 井高 悠斗 , 何 宜欣 , 田川 憲男 , 大久保 寛

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(222), 37-40, 2016-09-15

  • A Study for Ball Tracking in Basketball Analysis using Multi-View Image Sequences  [in Japanese]

    安田 航也 , 井高 悠斗 , 何 宜欣 , 田川 憲男 , 大久保 寛

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(221), 37-40, 2016-09-15

  • A Study for Ball Tracking in Basketball Analysis using Multi-View Image Sequences  [in Japanese]

    安田 航也 , 井高 悠斗 , 何 宜欣 , 田川 憲男 , 大久保 寛

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(220), 37-40, 2016-09-15

  • Statistical Analysis of Subjective Assessment for 3D CG Images with 8 Viewpoints Lenticular Lens Method

    KAWABATA Norifumi , HORITA Yuukou

    IIEEJ transactions on image electronics and visual computing 4(2), 101-113, 2016

  • Camera Pose Measurement using Straight Lines on Court for Recording Basketball Game  [in Japanese]

    IDAKA Yuto , YASUDA Kouya , HO Yihsin , OKUBO Kan , TAGAWA Norio

    バスケットボールの解析では,ボールや選手が他の選手に隠れてしまうオクルージョンの解決が重要となる.そこで我々は,多視点から撮影された映像を同時に利用することで,オクルージョンを回避しながらボールや選手の3次元認識を目指す.撮影に際して,手持ちビデオカメラを動かしながら,適宜ズームも加えて適切な映像を得る状況を想定すると,複数映像の利用のためには,ビデオカメラの位置と姿勢,ズーム量をフレーム毎に知る …

    ITE Technical Report 40.43(0), 13-16, 2016

    J-STAGE 

  • Robust Volleyball Tracking Method using Multi-View Cameras  [in Japanese]

    TAKAHASHI Masaki , IKEYA Kensuke , KANO Masanori , OKUBO Hidehiko , MISHINA Tomoyuki

    2020年の東京オリンピック開催へ向け,スポーツ映像解析技術への期待が高まっている.球技ではボールの動きに関心が集まるが,バレーボールでは動き予測の困難さや高速移動に起因するブラー,および遮蔽などの影響により,単視点映像からボールを安定追跡することが困難である.そこで複数台のカメラを利用し,他カメラの情報を相補的に利用しながらボールを頑健に追跡する手法を提案する.実環境で撮影したバレーボール映像で …

    ITE Technical Report 40.41(0), 5-8, 2016

    J-STAGE 

  • A Study for Ball Tracking in Basketball Analysis using Multi-View Image Sequences  [in Japanese]

    YASUDA Kouya , IDAKA Yuto , Yihsin HO , TAGAWA Norio , OKUBO Kan

    バスケットボール映像解析において,ボールの追跡は個人およびチームの技術向上や相手チームの戦略分析において,非常に重要である.我々は,コート内の既知の情報を用いて,ビデオ映像からカメラの自己校正(位置と向きの決定)をフレーム毎に安定に実現する手法を検討している.今回はその結果に基づき,複数視点映像にエピポーラ拘束 を適用することで,オクルージョンに強いボール追跡手法を提案する.

    ITE Technical Report 40.31(0), 37-40, 2016

    J-STAGE 

  • Video Cut Extraction Method for Wide-Angle Multi-View Videos Using Spatial Relationship between Ball and Cameras  [in Japanese]

    Tomiyasu Fumiharu , Wang Xueting , Mase Kenji

    映像を意味的に連続するフレーム群に分割する区切り点(カット)の抽出は,映像要約や映像編集において議論されてきた.従来では,画像,音声,文書,センサ情報などを利用して映像からカットを抽出し,分割したフレーム群の中から最適なものを選択・結合することで新たに1本の映像を生成する.我々は,サッカーを撮影した広視域角多視点映像において,視聴者の自由な視点切替えを可能とする映像視聴方式の実現を目指しており,視 …

    The Journal of the Institute of Image Electronics Engineers of Japan 45(3), 305-317, 2016

    J-STAGE 

  • The difference in viewer's impressions between Multi-view 3D Video Images and Ultra High-resolution with Viewpoint Manipulation  [in Japanese]

    Makino Mao , Yoshida Shunsuke , Okui Makoto

    高精細2次元映像が表現できる精密な描写により,立体感をより感じると言われている.しかし,高精細2次元映像と多視点裸眼立体映像で,立体感や臨場感の印象を比較すると,その程度や特徴に隔たりがあると考えられる.本稿では,視点操作を可能にした両ディスプレイで,再生条件を変えて見比べ,それらの印象の基礎データを取得することを目的とし,実験を行ったので,その結果を報告する.

    ITE Technical Report 40.10(0), 21-24, 2016

    J-STAGE 

  • 1 / 4
Page Top