High-speed video capture by a single flutter shutter camera using three-dimensional hyperbolic wavelets

At present, a commercially available magnetic barrel machine equipped with permanent magnets has some faults arising from constructional reason. That is, grinding or finishing ability is different from place to place in the machining region, resulting in the limitation on the region we can use in the container of workpieces. Therefore, in this research, authors made the new magnetic barrel machine equipped with three dimensional (3D) magnet arrangement to overcome these faults. The grinding ability of the new 3D magnetic barrel machine converted was experimentally examined, and compared with that of the traditional magnetic barrel machine. As a result, it was shown that we can use much broader region in the new 3D machine. It was also shown that the grinding ability became higher. The distribution of barrel media in action was recorded by means of a high speed video camera. It was clarified that the media rose up higher and were distributed more uniformly in the container by the effect of the magnet block newly set up. It was supposed that this must be the reason for the above-mentioned improvement of grinding ability.

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High-Speed Video-Oculography for Measuring Three-Dimensional Rotation Vectors of Eye Movements in Mice

PLoS ONE ◽

10.1371/journal.pone.0152307 ◽

2016 ◽

Vol 11 (3) ◽

pp. e0152307 ◽

Cited By ~ 13

Author(s):

Takao Imai ◽

Yasumitsu Takimoto ◽

Noriaki Takeda ◽

Atsuhiko Uno ◽

Hidenori Inohara ◽

...

Keyword(s):

Eye Movements ◽

High Speed ◽

Three Dimensional ◽

Video Oculography ◽

High Speed Video ◽

Rotation Vectors

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LED-Based 3-DMD Volumetric 3D Display

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.596.442 ◽

2014 ◽

Vol 596 ◽

pp. 442-445

Author(s):

Chang Long Jing ◽

Qi Bin Feng ◽

Ying Song Zhang ◽

Guang Lei Yang ◽

Zhi Gang Song ◽

...

Keyword(s):

Liquid Crystal ◽

High Speed ◽

Three Dimensional ◽

Human Vision ◽

3D Display ◽

Video Projector ◽

High Speed Video ◽

University Of Technology ◽

Measurement Results ◽

Main Components

A solid-state volumetric true 3D display developed by Hefei University of Technology consists of two main components: a high-speed video projector and a stack of liquid crystal shutters. The shutters are based on polymer stabilized cholesteric texture material, presenting different states that can be switched by different voltage. The high-speed video projector includes LED-based light source and tree-chip digital micro-mirror devices modulating RGB lights. A sequence of slices of three-dimensional images are projected into the liquid crystal shutters locating at the proper depth, forming a true 3D image depending on the human vision persistence. The prototype is developed. The measurement results show that the screen brightness can reach 149 nit and no flickers can be perceived.

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Three-dimensional analysis of eye movements using four times high-speed video camera

Auris Nasus Larynx ◽

10.1016/j.anl.2005.01.001 ◽

2005 ◽

Vol 32 (2) ◽

pp. 107-112 ◽

Cited By ~ 8

Author(s):

Toshiaki Yagi ◽

Yasuo Koizumi ◽

Mio Aoyagi ◽

Maki Kimura ◽

Kazuki Sugizaki

Keyword(s):

Eye Movements ◽

Dimensional Analysis ◽

High Speed ◽

Three Dimensional ◽

Video Camera ◽

High Speed Video ◽

High Speed Video Camera

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Development of three dimensional PIV method by processing sequential image data using high-speed video camera

Journal of the Visualization Society of Japan ◽

10.3154/jvs.19.supplement2_149 ◽

1999 ◽

Vol 19 (Supplement2) ◽

pp. 149-152

Author(s):

Ryozo Hiraku ◽

Toshio Suzuki

Keyword(s):

High Speed ◽

Three Dimensional ◽

Image Data ◽

Video Camera ◽

High Speed Video ◽

Piv Method ◽

High Speed Video Camera ◽

Sequential Image

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Three-dimensional launch kinematics in leaping, parachuting and gliding squirrels

Journal of Experimental Biology ◽

10.1242/jeb.205.16.2469 ◽

2002 ◽

Vol 205 (16) ◽

pp. 2469-2477 ◽

Cited By ~ 2

Author(s):

Richard L. Essner

Keyword(s):

Significant Variation ◽

High Speed ◽

Three Dimensional ◽

Tamiasciurus Hudsonicus ◽

Glaucomys Volans ◽

Tamias Striatus ◽

High Speed Video ◽

Primary Means ◽

Hindlimb Kinematics

SUMMARY Leaping, parachuting and gliding are the primary means by which arboreal squirrels negotiate gaps in the canopy. There are notable differences among the three locomotor modes with respect to mid-air postures and aerodynamics,yet it is unclear whether variation should also be expected during the launch phase of locomotion. To address this question, launch kinematic profiles were compared in leaping (Tamias striatus), parachuting (Tamiasciurus hudsonicus) and gliding (Glaucomys volans) squirrels. Animals were filmed launching to the ground from a platform using high-speed video. Statistical comparisons among taxa indicated that only six out of 23 variables were significantly different among the three species. Two were associated with tail kinematics and were a consequence of tail morphology. Two were forelimb-related and discriminated gliding from non-gliding taxa. The remaining two variables were performance attributes, indicating significant variation among the species in take-off velocity and horizontal range. The absence of significant differences in hindlimb kinematics indicates that propulsion is essentially identical in leaping, parachuting and gliding squirrels.

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Circular Dynamic Stereoscopy and Its Application for Fluid Measurement

Journal of Fluids Engineering ◽

10.1115/1.1637632 ◽

2004 ◽

Vol 126 (1) ◽

pp. 42-47

Author(s):

Kikuhito Kawasue ◽

Yuichiro Oya ◽

Takakazu Ishimatsu

Keyword(s):

High Speed ◽

Tracer Particle ◽

Three Dimensional ◽

Image Plane ◽

Positional Information ◽

Video Camera ◽

Measuring System ◽

Original Position ◽

Video Capture ◽

Typical Application

By attaching a refractor to the lens of a Video Capture Device (e.g., CCD Video Camera) it is possible to record optical displacements from the original position of any object (tracer particle) within the image plane. If the refractor is physically rotated around the optical axis at high speed, the tracer particles create annular streaks due to the effect caused by the refractor’s circular shift. The perceived displacements are added to the image being recorded by the Video Capture Device (VCD). Additionally, these displacements are directly related to the distance between the VCD and the particle being measured: the magnitude of displacement on the image plane being inversely proportional to the distance between the VCD and point of measurement. Since the radius of each annular streak, of a point being measured, is inversely proportional to its distance from the VCD, it is therefore possible by analyzing these annular streaks, to determine the three dimensional positional information of the point. Thus the radius of the annular streaks on the image plane determines the z coordinate, while the geometric center provides the x and y coordinates. The theory and setup of such a measuring system is subsequently presented, and the measurement of a moving surface, such as moving water, is used to demonstrate a typical application of such a system.

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