Search Results 1-20 of 313

  • A Visual PCI Blockage Detection in Blast Furnace Raceway

    Wang Yutao , Huang Pu , Yang Gang

    … This paper presents an intelligent image-based method to detect the PCI blockage. … An adaptive image preprocessing technique combining de-noising algorithm and image enhancement algorithm is applied to remove image noise and improve image quality, laying the foundation for subsequent work. …

    ISIJ International 60(3), 519-527, 2020

    J-STAGE 

  • Estimating Children's Personalities Through Their Interaction Activities with a Tele-Operated Robot

    Abe Kasumi , Nagai Takayuki , Hieida Chie , Omori Takashi , Shiomi Masahiro

    … <p>Based on the little big-five inventory, we developed a technique to estimate children's personalities through their interaction with a tele-operated childcare robot. … For personality estimation, our approach observed not only distance-based but also face-image-based features when a robot interacted with a child at a close distance. …

    Journal of Robotics and Mechatronics 32(1), 21-31, 2020

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  • Efficient and accurate estimation of water surface velocity in STIV

    Fujita I. , Notoya Y. , Tani K. , Tateguchi S.

    Based on the assumption about the traceability of surface features, image-based techniques have been developed in the past decades. … The space-time image velocimetry (STIV) is one of those techniques developed by Fujita et al. … However, there is still some room for improvement in determining accurate surface velocity from a space-time image (STI) used in STIV. …

    Environmental Fluid Mechanics 19(5), 1363-1378, 2019-10

    IR 

  • A DATA AUGMENTATION WITH PIX2PIX FOR DEEP LEARNING METHOD FOR DETECTING CRACK ON AN ACTUAL CONCRETE  [in Japanese]

    FUKUOKA Tomotaka , MINAMI Takahiro , URATA Wataru , FUJIU Makoto , TAKAYAMA Junichi

    <p> 橋梁の保守点検作業は多大な労力を要しており,技術者不足や予算の問題で十分な保守点検作業が行われていない.近年ではこの問題に対して,これまで人手で行ってきた作業を自動化する様々な取り組みが研究されている.その手法の一つとして,深層学習を用いた画像処理手法が研究されているが,深層学習には膨大な訓練データが必要であり,その収集コストが問題点の一つとして挙げられる.これまでの既存研究で …

    Journal of Japan Society of Civil Engineers, Ser. F4 (Construction and Management) 75(2), I_27-I_35, 2019

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  • Real-time 3D pose estimation by RGB-D camera for prediction of human motion  [in Japanese]

    Judai Atsuki , Mae Yasushi , Kojima Masaru , Nagai Takayuki

    … <p>As the opportunity of interactions between human and robot increases, real-time human 3D pose estimation technique is required for robot to act adaptively to human motion. … This paper describes a method of real-time 3D pose estimation using a RGB-D camera and an image-based pose estimation technique. …

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019(0), 2P2-T05, 2019

    J-STAGE 

  • Maximum likelihood decoding based on pseudo-captured image templates for image sensor communication

    Arai Shintaro , Matsushita Haruna , Ohira Yuki , Yendo Tomohiro , He Di , Yamazato Takaya

    … <p>This paper focuses on an image sensor communication system that uses an LED as the transmitter and a high-speed image sensor (camera) as the receiver. … If the image becomes unfocused on the way to the receiver, the LED luminance that make up the signal cannot be detected, so the receiver cannot demodulate the signal data. …

    Nonlinear Theory and Its Applications, IEICE 10(2), 173-189, 2019

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  • Development of three-dimensional facial expression models using morphing methods for fabricating facial prostheses

    Matsuoka Ayumi , Yoshioka Fumi , Ozawa Shogo , Takebe Jun

    … In order for the facial prosthesis to remain in position, especially around marginal areas subject to movement, a new method of making 3D facial expression models using time-series data allowing changes in facial expression by morphing technique was developed.</p><p><i>Methods:</i> …

    Journal of Prosthodontic Research 63(1), 66-72, 2019

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  • Anatomic Anterior Cruciate Ligament Reconstruction Using Hamstring Tendons Restores Quantitative Pivot Shift

    Zaffagnini Stefano , Signorelli Cecilia , Grassi Alberto , Hoshino Yuichi , Kuroda Ryosuke , de Sa Darren , Sundemo David , Samuelsson Kristian , Musahl Volker , Karlsson Jon

    … Methods: An inertial sensor and image analysis were used at 4 international centers to measure tibial acceleration and lateral compartment translation of the knee, respectively. … image analysis, 2.04 ± 2.02 mm) and postoperatively (inertial sensor, -0.54 ± 1.25 m/s(2); … image analysis, -0.10 ± 1.04 mm) between the involved and healthy joints, as measured by the 2 devices (P < … image analysis, 0.99 ± 0.83 vs 1.09 ± 0.92 mm, respectively [P = .38]). …

    Orthopaedic Journal of Sports Medicine 6(12), 2325967118812364, 2018-12-01

    IR 

  • IMPROVEMENT OF STIV FOR VIDEO IMAGES CAPTURED UNDER DETERIORATED MEASUREMENT CONDITIONS  [in Japanese]

    FUJITA Ichiro , SHIBANO Tatsushi , TANI Kojiro

    <p> ビデオ画像を用いた非接触流速・流量計測法であるSTIVは,その計測原理のわかりやすさや計測精度の高さなどから流量観測の高度化における一手法として認知され,リアルタイム計測システムも構築されている.しかしながら,河川表面の撮影条件によっては十分な計測精度を保てないケースもあり,計測システムとしての頑健性が求められていた.そこで,本研究では計測誤差を生じさせる要因を分類し,特徴を整 …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74(5), I_619-I_624, 2018

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  • EFFECT OF A WEIR ALIGNED OBLIQUELY TO THE MAIN FLOW DIRECTION OF THE ICHIKAWA RIVER  [in Japanese]

    TSUJI Issei , NASU Ryuichi , FUJITA Ichiro , TANI Kojiro , MAETA Hiroyuki

    <p> 兵庫県姫路市内を南に流下する市川は,古くから河道内に様々な河川構造物が配置された二級河川であり,河川整備計画に基づいた河道改修が順次進められている.市川の中流域にみられる特徴的な河川構造物の中に河道方向に対して45度傾けて設置された堰(花田井堰)がある.通常,堰は河道に直角に設置されるのが一般的であるのに対し,この堰は明治以前から主流に対して大きく傾けて設置されていたことが確認 …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74(5), I_835-I_840, 2018

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  • Applicability of voxel element considering heterogeneity of material for integration points of finite element  [in Japanese]

    TERANISHI Masaki , KUWAZURU Osamu , KOBAYASHI Masakazu , TODA Hiroyuki

    … <p>Image-based modeling technique enables us to create the finite element model with real shape by using CT images. … Material properties of each integration point are determined based on the bi-linear interpolation of the intensity of CT images. …

    The Proceedings of the Materials and Mechanics Conference 2018(0), OS1101, 2018

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  • Radiomics for image-based molecular diagnosis of gliomas  [in Japanese]

    KINOSHITA Manabu

    … This technique has become possible with the aid of high performing computational power and in some cases assistance of artificial intelligence. …

    Medical Imaging and Information Sciences 35(4), 55-58, 2018

    J-STAGE  Ichushi Web 

  • Deblocking Artifact of Satellite Image Based on Adaptive Soft-Threshold Anisotropic Filter Using Wavelet

    RISNANDAR , ARITSUGI Masayoshi

    … <p>New deblocking artifact, or blocking artifact reduction, algorithms based on nonlinear adaptive soft-threshold anisotropic filter in wavelet are proposed. … The OICI is a reconstruction technique of estimated deblocking artifact which improves acceptable quality level of estimated deblocking artifact and reduces execution time of deblocking artifact estimation compared to the other methods. …

    IEICE Transactions on Information and Systems E101.D(6), 1605-1620, 2018

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  • Guidance Navigation and Control Technique for High Precision Lunar Landing  [in Japanese]

    UEDA Satoshi , SAKAI Shinichiro , FUKUDA Seisuke , SAWAI Syujiro

    Journal of The Society of Instrument and Control Engineers 57(4), 222-228, 2018

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  • Pseudo-Dolly-In Video Generation Combining 3D Modeling and Image Reconstruction

    Shishido Hidehiko , Yamanaka Kazuki , Kameda Yoshinari , Kitahara Itaru , 宍戸 英彦 , 亀田 能成 , 北原 格

    … This paper proposes a pseudo-dolly-in video generation method that reproduces motion parallax by applying image reconstruction processing to multi-view videos. … By applying the Image-Based Modeling technique, dolly-in video can be generated. …

    ISMAR 2017 Workshop on 13th: Workshop on Highly Diverse Cameras and Displays for Mixed and Augmented Reality (HDCD4MAR2017), 327-333, 2017-10

    IR 

  • 視覚文字表現と深層学習による文書分類法  [in Japanese]

    島田 大輔

    … In this study, we propose a new andefficient document classification technique for such languages. … The proposed method is characterized into a new "image-based character embedding" method and character-level convolutional neural networks methodwith "wildcard training." The first method encodes each character based on its visual structures and preserves them. …

    法政大学大学院紀要. 理工学・工学研究科編 = 法政大学大学院紀要. 理工学・工学研究科編 (58), 1-8, 2017-03-31

    IR 

  • Motion Parallax Representation for Indirect Augmented Reality

    Okura Fumio , Nishizaki Yuya , Sato Tomokazu , Kawai Norihiko , Yokoya Naokazu

    … The key idea of this study is to employ an image-based rendering technique using pre-captured multi-view omnidirectional images to provide free-viewpoint navigation. … For a pilot study, we have developed an IAR system representing a motion parallax effect using an optical-flow-based camera motion estimation. …

    2017-02-02

    IR 

  • Facial Fattening and Slimming Simulation Based on Skull Structure  [in Japanese]

    Fukusato Tsukasa , Fujisaki Masahiro , Kato Takuya , Morishima Shigeo

    本稿では,一枚の正面顔画像から太った状態や痩せた状態を予測するための肥痩変化顔画像を合成する手法を提案する.従来手法は,複数の顔画像で構成されたデータベースを用いることで,入力となる人物顔画像に対する肥痩変形を行っていた.しかし,これらの手法では顔画像から得られる情報(顔の表面情報)のみを扱い,人物の頭蓋骨形状や脂肪の付き方は考慮されていなかった.その結果,頭蓋骨の形状を無視した不自然な結果となっ …

    The Journal of the Institute of Image Electronics Engineers of Japan 46(1), 197-205, 2017

    J-STAGE 

  • Area-wide Total Wind and Photovoltaic Power Forecasting Using Multiple Regression Technique and Analysis of Forecast Error Characteristics  [in Japanese]

    Takahashi Masahito , Matsuhashi Ryuji

    … Renewable power forecasting is one of key components to maintain the reliability of a power system with large-scale renewable integration and has been studied by use of a variety of approaches, such as area-wide numerical weather simulation, satellite image based forecasting and statistical model. …

    Journal of Japan Society of Energy and Resources 38(5), 1-8, 2017

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  • AN IMAGE-BASED TECHNIQUE FOR EXTRACTING AND MEASURING CONCRETE CRACKS USING LEVEL-SET FUNCTION  [in Japanese]

    KURUMATANI Mao , NAKANO Aoi , WATANABE Tomomi

    本論文では,コンクリート構造物表面を撮影したデジタル画像に含まれる領域形状を評価することで,ひび割れを自動で計測できる手法を提案する.領域の形状評価には,レベルセット関数を利用する.レベルセット関数の概念に基づいて,領域境界までの最短距離と最長距離の最大値をそれぞれ求め,デジタル画像に含まれる領域の細長さと複雑さを評価することで,ひび割れとそれ以外の領域に分類する.元画像に新たな情報を付加すること …

    Journal of Japan Society of Civil Engineers, Ser. F3 (Civil Engineering Informatics) 73(2), I_29-I_36, 2017

    J-STAGE 

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