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  1. No Access

    Article

    High-frame-rate Video-based Multicopter Tracking System Using Pixel-level Short-time Fourier Transform

    In this study, we develop a telephoto pan-tilt drone search and track system for multicopters flying in a wide area spanning hundreds of meters, situated at a distance of hundreds of meters. It can detect peri...

    Kohei Shimasaki, Nagahiro Fujiwara, Shaopeng Hu in Journal of Intelligent & Robotic Systems (2021)

  2. No Access

    Article

    Experimental studies on droplet characteristics in a microfluidic flow focusing droplet generator: effect of continuous phase on droplet encapsulation

    The efficacy of droplet-based microfluidic assays depends on droplet size, pattern, generation rate, etc. The size of the droplet is affected by numerous variables as flow rate ratio, viscosity ratio, microcha...

    Sangam Srikanth, Sushil Raut, Satish Kumar Dubey in The European Physical Journal E (2021)

  3. Article

    Open Access

    Droplet-based lab-on-chip platform integrated with laser ablated graphene heaters to synthesize gold nanoparticles for electrochemical sensing and fuel cell applications

    Controlled, stable and uniform temperature environment with quick response are crucial needs for many lab-on-chip (LOC) applications requiring thermal management. Laser Induced Graphene (LIG) heater is one suc...

    Sangam Srikanth, Sohan Dudala, U. S. Jayapiriya, J. Murali Mohan in Scientific Reports (2021)

  4. Article

    Open Access

    Projection-map**-based object pointing using a high-frame-rate camera-projector system

    The novel approach to physical security based on visible light communication (VLC) using an informative object-pointing and simultaneous recognition by high-framerate (HFR) vision systems is presented in this ...

    Deepak Kumar, Sushil Raut, Kohei Shimasaki, Taku Senoo, Idaku Ishii in ROBOMECH Journal (2021)

  5. Article

    Open Access

    Real-time high-resolution video stabilization using high-frame-rate jitter sensing

    In this study, the novel approach of real-time video stabilization system using a high-frame-rate (HFR) jitter sensing device is demonstrated to realize the computationally efficient technique of digital video...

    Sushil Raut, Kohei Shimasaki, Sanjay Singh, Takeshi Takaki, Idaku Ishii in ROBOMECH Journal (2019)

  6. No Access

    Chapter and Conference Paper

    High-Frame-Rate Video Analysis for Mobile-Vibration-Based Crop Inspection

    This paper describes a novel method for mobile-vibration-based crop inspection to visualize differences in dynamics between vibrating crops and objects pixel by pixel with vision-based FFT analysis. High-frame...

    Kohei Shimasaki, Sushil Raut, Mingjun Jiang in Rural Technology Development and Delivery (2019)

  7. Article

    Open Access

    Motion-blur-free video shooting system based on frame-by-frame intermittent tracking

    In this paper, a concept of frame-by-frame intermittent tracking to achieve motion-blur-free and high-brightness images when video shooting fast moving scenes is proposed. In our tracking concept, two control ...

    Michiaki Inoue, Mingjun Jiang, Yuji Matsumoto, Takeshi Takaki in ROBOMECH Journal (2017)

  8. Article

    Open Access

    Position and inclination control of a passive disk based on cyclic motion generation

    We propose a position and inclination controlling method for a passive object using an active plate. Previously, we proposed a novel manipulation scheme that can control a passive object’s orientation using an...

    Tadayoshi Aoyama, Qingyi Gu, Takeshi Takaki, Idaku Ishii in ROBOMECH Journal (2017)

  9. No Access

    Chapter and Conference Paper

    High Frame Rate Real-Time Scene Change Detection System

    Scene change detection, one of the fundamental and most important problem of computer vision, plays a very important role in the realization of a complete industrial vision system as well as automated video su...

    Sanjay Singh, Ravi Saini, Sumeet Saurav in Computer Vision, Graphics, and Image Proce… (2017)

  10. No Access

    Article

    Review of some advances and applications in real-time high-speed vision: Our views and experiences

    The frame rate of conventional vision systems is restricted to the video signal formats (e.g., NTSC 30 fps and PAL 25 fps) that are designed on the basis of the characteristics of the human eye, which implies ...

    Qing-Yi Gu, Idaku Ishii in International Journal of Automation and Computing (2016)

  11. No Access

    Article

    High frame-rate tracking of multiple color-patterned objects

    In this study, we develop a high frame-rate vision system that can execute color histogram-based tracking of multiple color-patterned objects in a 512 × 512 image at 2,000 fps by implementing an expanded cell-...

    Qingyi Gu, Tadayoshi Aoyama, Takeshi Takaki in Journal of Real-Time Image Processing (2016)

  12. No Access

    Chapter

    Dynamic Information Space Based on High-Speed Sensor Technology

    The purpose of this research is to realize a dynamic information space harmonizing human perception system, recognition system, and motor system. Toward this purpose, our key technology is high-speed sensor te...

    Masatoshi Ishikawa, Idaku Ishii in Human-Harmonized Information Technology, V… (2016)

  13. No Access

    Chapter

    Real-time Capillary-level Microchannel Flow Analysis Using a Full-pixel Frame-straddling Micro-PIV System

    We develop a high throughput microscopic particle image velocimetry system that can compute flow vectors of 512 × 512 pixels in real time at 500 fps for fast microchannel flow. To compute many flow vectors at ...

    Idaku Ishii, Tadayoshi Aoyama in Hyper Bio Assembler for 3D Cellular Systems (2015)

  14. No Access

    Chapter

    Fast Three-Dimensional Shape Inspection Using a Multi-sided Mirror

    This chapter describes a fast and high-space resolution three-dimensional (3-D) shape inspection system based on the light-section method, which sets a multi-sided mirror between an image sensor and the target...

    Idaku Ishii in Integrated Imaging and Vision Techniques for Industrial Inspection (2015)

  15. No Access

    Chapter and Conference Paper

    Real-Time Modal Analysis of Shell-Shaped Objects Using High-Frame-Rate Structured-Light-Based Vision

    In this study, we introduce a real-time vision-based modal testing system to estimate the modal parameters of shell-shaped objects simultaneously using high-frame-rate structured-light-based vision. Based on s...

    Hua Yang, Qingyi Gu, Tadayoshi Aoyama, Takeshi Takaki in Topics in Modal Analysis, Volume 7 (2014)

  16. No Access

    Article

    500-fps face tracking system

    In this paper, we propose a high-speed vision system that can be applied to real-time face tracking at 500 fps using GPU acceleration of a boosting-based face tracking algorithm. By assuming a small image disp...

    Idaku Ishii, Tomoki Ichida, Qingyi Gu in Journal of Real-Time Image Processing (2013)

  17. No Access

    Article

    Real-time scratching behavior quantification system for laboratory mice using high-speed vision

    Scratching is a specific behavior induced by itching; it is also a common symptom of many types of dermatitis. For the itching evaluation in animal models, automatic quantification system is needed for objecti...

    Yuman Nie, Idaku Ishii, Kenkichi Yamamoto in Journal of Real-Time Image Processing (2009)

  18. No Access

    Chapter and Conference Paper

    A Motion-based System to Evaluate Infant Movements Using Real-time Video Analysis

    This paper proposes a marker-less motion measurement and analysis system for quantitative evaluation of movements of infants. In this system, movements of infants are measured using a single video camera, and ...

    Yuko Osawa, Keisuke Shima, Nan Bu in 13th International Conference on Biomedica… (2009)

  19. No Access

    Chapter and Conference Paper

    lms Sensory-Motor Fusion System

    Recently, there has been growing interest in sensory-motor integration for new behavior of intelligent robots. And the key component to this work is sensory information processing technology which is based on ...

    Masatoshi Ishikawa, Takashi Komuro, Akio Namiki, Idaku Ishii in Robotics Research (2000)