This paper introduces a high-speed vision system called IDP Express, which can execute real-time image processing and high frame rate video recording simultaneously. In dedicated FPGA (Field Programmable Gate Array) board processes 512 × pixel images from two camera heads by implementing algorithms as hardware logic; the input processed results are transferred to standard PC memory at of 2000 fps or more. Owing simultaneous high-frame-rate recording, Express be used an intelligent logger for...

In this paper, we develop a high-frame-rate (HFR) vision system that can estimate the optical flow in real time at 1000 f/s for 1024×1024 pixel images via hardware implementation of an improved detection algorithm on high-speed platform. Based Lucas-Kanade method, adopt gradient-based adaptively select pseudo-variable frame rate according to amplitude estimated accurately detect objects moving high and low speeds same image. The performance our developed HFR was verified through experimental...

This paper presents a lightweight (328 g) anthropomorphic robot hand that can exert large grasping force. We propose mechanism combining flexion drives and force-magnification drive for cable-driven multifingered hand. The consisting of feed screw enables quick finger motion, the drive, an eccentric cam, bearing, pulley, firm grasp. also proposes 3-D linkage thumb. consists four links is driven by screw. It oppose to force exerted drive. These mechanisms are compact enough be installed in...

This paper proposes a novel concept for simultaneous cell shape and motion analysis in fast microchannel flows by implementing multiobject feature extraction algorithm on frame-straddling high-speed vision platform. The system can synchronize two camera inputs with the same view only tiny time delay sub-microsecond timescale. Real-time video processing is performed hardware logic extracting moment features of multiple cells 512 × 256 images at 4000 fps their be adjusted from 0 to 0.25 ms 9.9...

This paper proposes the concept of multidirectional-modal-parameter-based visual inspection with high-frame-rate (HFR) stereo video analysis as a novel active sensing methodology for determining dynamic properties vibrating object. HFR is used observing 3-D vibration distribution an object under unknown excitations in audio-frequency range, and projections displacement vectors along multiple directions can be verified using output-only modal that estimate their parameters such resonant...

Abstract This paper introduces a novel fused deposition modeling 3D printing technique for
producing high-strength, lightweight components, referred to as jigsaw printing. The
proposed method can effectively integrate the filling patterns and densities of
multiple 3D-printed internal structures into single component. The density of
the printed part be continuously varied along certain direction, thereby achieving
a functional gradient. Notably, this is...

Improved robot mobility is necessary in order to realize the expected uses of robots human life environment, which includes obstacles such as stairs and narrow passages. Because objects humans require are often located on desks or tables, at some height above ground level, a long vertical dimension also design. To meet these requirements, this study focused type mobile using an inverted pendulum, enables with negotiate Since it difficult for pendulum climb steps, proposes planetary wheel...

We describe a cell-based connected component labeling algorithm to calculate the 0th and 1st moment features as attributes for labeled regions. These can be used indicate their sizes positions multi-object extraction. Based on additivity in features, label divided cells of certain size an image by scanning only once obtain regions with remarkably reduced computational complexity memory consumption labeling. Our is simple-one-time-scan algorithm, which suitable hardware parallel...

This paper presents a novel concept of real-time catadioptric stereo tracking using single ultrafast mirror-drive pan-tilt active vision system that can simultaneously switch between hundreds different views in second. By accelerating video-shooting, computation, and actuation at the millisecond-granularity level for time-division multithreaded processing gaze control, function virtually as two or more cameras with views. It enables to act virtual left right shoot pair images same object be...

This study realizes the activity sensing of honeybees flying in a natural outdoor environment by inspecting pixel-level temporal frequency responses brightness high-frame-rate (HFR) video, computed executing shorttime Fourier transforms (STFTs) signals at all pixels. To localize multiple an HFR periodic changes pixels around wings that were flapping hundreds Hertz detected range below Nyquist frequency, which is defined as half frame rate video STFTs Vibration each honeybee identified...

This paper presents a force visualization mechanism for endoscopic surgical instruments using Moirée fringe. can display fringes or characters that correspond to the magnitude of between and internal organs without use electronic elements, such as amplifiers strain gauges. As this is simply attached instruments, there no need additional devices in operating room wires connect these devices. The structure simple, its fabrication inexpensive. An example shown with mounted on 10-mm forceps. We...

We present a high-speed vision-based morphological analysis system for fast-flowing cells in microchannel. Real-time video processing is performed hardware logic by extracting the moment features and bounding boxes of multiple 512 × 256-pixel images at 2000 fps. The extracted cell regions are pushed into first-in-first-out (FIFO) buffer real-time image-based after being shrunk proportionally to certain size. By using shrinking region size reduce time, our vision can perform fast 500 cells/s...

In this paper, we report on the development of a projection mapping system that can project RGB light patterns are enhanced for three-dimensional (3-D) scenes using GPU-based high-frame-rate (HFR) vision synchronized with HFR projectors. Our acquire 512×512 depth images in real time at 500 fps. The image processing is accelerated by installing GPU board parallel gray-code structured method infrared (IR) projected from an IR projector. Using computed images, suitable to be generated...

In this paper, we propose a design method for the mechanism of robotic arm suitable multicopter. The motion an attached to multicopter can possibly disturb attitude. Our aim is suppress attitude disturbance by mechanical methods. proposed method, has following features suppressing 1. adjust its center gravity (COG). 2. simplified model, sum angular momentum rotating parts constituting robot equal zero. These compensate both displacement COG and counter torque generated from parts, which...

We investigate the effect of appearance variations on detectability vibration feature extraction with pixel-level digital filters for high-frame-rate videos. In particular, we consider robust vibrating object tracking, which is clearly different from conventional appearance-based tracking spatial pattern recognition in a high-quality image region certain size. For 512 × videos rotating fan located at positions and orientations captured 2000 frames per second lens settings, verify how many...

This paper presents a 99 g finger joint that can exert very strong fingertip force of more than 100 N. We have shown simple five-bar linkage be used as load-sensitive continuously variable transmission (CVT) for joint. The maximum our previous was limited by the mechanical strength its links and bearings, not power DC motor. If machine improved, much greater expected. To design lightweight CVT with sufficient strength, we analyze internal select light plain bearings. also stress using finite...

We conducted high-frame-rate (HFR) video mosaicing for real-time synthesis of a panoramic image by implementing an improved feature-based algorithm on field-programmable gate array (FPGA)-based high-speed vision platform. In the implementation algorithm, feature point extraction was accelerated parallel processing circuit module Harris corner detection in FPGA Feature correspondence matching can be executed hundreds selected points current frame searching those previous their neighbor...

Previously, we proposed a multithread active vision system with virtual multiple pan-tilt tracking cameras by rapidly switching the viewpoints for vibration sensing of large-scale structures. We also developed using galvanometer mirror that can switch 500 different in 1 s. However, measurement rate each observation point is low, and time density not always sufficient. In addition, strong illuminations are required owing to retro reflective markers attached object being observed. this study,...