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A big advantage of minimally invasive surgery is the quick recovery afforded by the minimal physical injury sustained by patients. However, the operative field provided by the endoscope camera is rather narrow. This paper discusses a new broad-view camera system, which is capable of providing a wider view of the internal organs during minimally invasive surgery. This system consists of a camera unit...
Real-time multi-object extraction at 2000 fps was realized by designing a cell-based labeling algorithm. The algorithm can label the divided cells in an image by scanning the image only once to obtain their moment features, and the computational complexity required for labeling can be remarkably reduced. The cell-based labeling algorithm for 8 × 8 pixel cells was implemented on a high-speed vision...
This paper introduces an intelligent high-frame-rate video logging system that can automatically detect high-speed unpredictable behavior and record video comprising images with dimensions of 512 × 512 pixels at 1000 fps. To capture high-frame-rate video of crucial moments of abnormal behavior in high-speed periodic motion, a real-time abnormal behavior detection algorithm is implemented on a highspeed...
This paper introduces an intelligent high-frame-rate video recording system that can automatically detect strong acceleration in images and record corresponding images with dimensions of 512 × 512 pixels at 1000 fps. To capture high-frame-rate images of crash behavior, a contact detection algorithm is software-implemented on a high-speed vision platform, IDP Express, which can process and record input...
Real-time image recognition at 1000 fps is realized by implementing a parallel processing circuit module to calculate higher-order local auto-correlation (HLAC) features on a high-speed vision platform. The circuit module is compactly designed in order to decrease the number of multiplications required in the HLAC calculation. The circuit module is integrated on a user-specific FPGA of the high-speed...
Real-time feature point tracking at 1000 fps was performed by implementing a feature point tracking algorithm on a high-speed vision platform, which is improved for hardware integration and high-speed processing at real time. The high-speed vision platform on which the improved algorithm is hardware-implemented can be used to track feature points of 1024??1024 pixel images at 1000 fps. By considering...
In this paper, we describe our high-speed glossy surface scanner, which estimates surface reflectance properties for conveying objects. Using the glossy surface scanner, a single image, which was condensed with reflected rays of light in different directions using a cylindrical lens, is processed on a high-speed vision platform. Surface reflectance properties estimated at 1000 fps were realized in...
By using a synthetic photosensitive amphiphile containing azobenzene (KAON12), we developed a method for the photo-manipulation of lipid membrane morphology, in which the shape of a vesicle can be switched by light. Cell-sized liposomes are prepared from KAON12 and 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC). We conducted real-time observations of vesicular transformation in the photo-sensitive...
In this paper, we introduce a high-speed vision platform, H3 (Hiroshima hyper human) vision, which can simultaneously process a 1024 ?? 1024 pixel image at 1000 fps and a 256 ?? 256 pixel image at 10000 fps by implementing image processing algorithms as hardware logic on a dedicated FPGA board. Various types of algorithms are actually implemented to show that H3 Vision can work a high-speed image...
A disadvantage of laparoscopic surgery is the narrow operative field provided by the endoscope camera. This paper describes a newly developed broad-view camera unit for use with the broad-view camera system, which is capable of providing a wider view of the internal organs during laparoscopic surgery. The developed camera unit is composed of a miniature color CMOS camera, an indwelling needle, and...
The forced swim test (FST) is a method for measuring the pharmacological effects of antidepressants or changes in stress-evoked behavior in laboratory animals such as rats and mice. However, traditional manual or automatic measurement methods using video recorded at 30 fps (frames per second) have not always been accurate and objective because laboratory animals frequently make quick movements during...
In various application fields, high-speed cameras are used to analyze high-speed phenomena. Coded structured light projection methods have been proposed for acquiring three-dimensional images. Most of them are not suitable for measuring high-speed phenomena because the errors are caused when the measured objects move due to light projection of multiple patterns. In this paper, we propose a new coded...
A novel real-time motion analysis system was developed for detecting the scratching behavior of laboratory mice in long-time experiments, which enables automated behavior quantification for new drug development in diseases such as atopic dermatitis and so on. This system can detect quick movements of laboratory mice, such as scratching, by introducing a specially designed high-speed vision system...
In this paper, we describe VLSI implementation using a new vision chip architecture that enables various visual processings on the same architecture and combines high speed and the high accumulation. A 64 x 64 pixel prototype vision chip and its evaluation results are shown. The chip is integrated on a 3.6 mm x 3.9 mm chip using a 0.35 mum CMOS DLP/TLM process; the pixel size is 33.0 mum x 33.0 mum...
In this paper, the authors propose a new concept for high spatial resolution 3D shape measurement based on the light-section method by setting a multi-sided mirror between an image sensor and measured object. The authors developed a prototype system for 3D measurement based on a high-speed vision hardware, which can process a 1024 times 1024 pixel image at 1000 fps, and evaluated its effectiveness...
A 1,000-jps camera-projector system in which projected patterns are adoptively controlled according to image processing results is described. Adaptive structured light projection enables fast and efficient 3-D information acquisition. The prototype system is applied to the tracking of the nearest point of an object, and experimental results show that the system successfully tracked an apex of a fast-moving...
This paper proposes dynamic capturing strategies where a 2D stick-shaped object with both translational and rotational velocities is completely stopped by two robotic fingers. We first show the fingertip position and the object orientation for generating a desired velocity of the object under the friction independent collision. Once the object results in a pure translational motion whose direction...
In this paper, we propose a finger-tapping interface called FINGERTAP, which can estimate the contact states and forces on human fingertips in real time by using only the fingertip positions measured by high-speed vision cameras. In particular, we focus on the high-frequency component that develops at the moment a fingertip contacts something. We introduce a real-time estimation algorithm for the...
The concept on the interconnection of residential homes by the energy networks including electricity, heat (hot water), and hydrogen into a group of residential homes where some homes have fuel cells has been proposed by authors previously. The networks connect fuel cell stacks, fuel processors, which make hydrogen from natural gas, and other equipment and allow the homes to share the equipment. It...
This paper discusses jumping pattern generation for a serial link robot in order to maximize its jump height under torque limitation. By applying a genetic algorithm (GA) for determining torque assignment, we obtain various jumping patterns with respect to the torque limitation for a fixed mass of the robot. With the increase of the torque limitation, double-leg based jump, single-leg based jump,...
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