Cardiac Motion Analysis Using High-Speed Video Images in a Rat Model for Myocardial Infarction

The distribution of cathode spots in a CuCr25 vacuum arc controlled by an axial magnetic field and ignited on the lateral surface of the cathode is investigated for long gap distances, from the processing of high-speed video images. The processing method includes also estimating the current carried by a single spot and reconstructing the distribution of the current density at the cathode. Various distributions depending partly on the arc current are described.

Download Full-text

Application of one-dimensional high-speed video camera system to motion analysis

19th Intl Congress on High-Speed Photography and Photonics ◽

10.1117/12.23949 ◽

1991 ◽

Author(s):

Tsuneyoshi Uyemura ◽

Naoki Yokoyama

Keyword(s):

Motion Analysis ◽

High Speed ◽

Video Camera ◽

Camera System ◽

One Dimensional ◽

High Speed Video ◽

High Speed Video Camera ◽

Video Camera System

Download Full-text

High-speed video images of helium inductively coupled plasmas for mass spectrometry

Spectrochimica Acta Part B Atomic Spectroscopy ◽

10.1016/s0584-8547(99)00131-7 ◽

1999 ◽

Vol 54 (13) ◽

pp. 1919-1928 ◽

Cited By ~ 4

Author(s):

Lisa A. Iacone ◽

Michael G. Minnich ◽

Wellington R.L. Masamba ◽

Sang-Ho Nam ◽

Akbar Montaser ◽

...

Keyword(s):

Mass Spectrometry ◽

High Speed ◽

Inductively Coupled Plasmas ◽

Inductively Coupled ◽

High Speed Video ◽

Video Images ◽

Coupled Plasmas

Download Full-text

Measurement of Liquid Film Thickness in Slug Flow of Air and Viscous Liquid in a Microchannel

ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels ◽

10.1115/icnmm2015-48663 ◽

2015 ◽

Author(s):

Lok Fung ◽

Masahiro Kawaji

Keyword(s):

Film Thickness ◽

Liquid Film ◽

Slug Flow ◽

High Speed ◽

Capillary Tube ◽

Liquid Film Thickness ◽

Displacement Sensor ◽

Velocity Data ◽

High Speed Video ◽

Video Images

Liquid film thickness data in slug flow in a 320 μm diameter capillary tube have been obtained and are compared with existing data and correlations. Solutions of glycerol in water at varying concentrations between 50 and 70% were injected into the capillary tube along with air, at ambient temperature. The thickness of the liquid film was measured using a laser confocal displacement sensor. Gas slug velocity data were obtained from high speed video images recorded at 40,000 frames per second. As liquid viscosity and hence capillary number was reduced, the film thickness around the gas slugs in the capillary tube decreased as expected. The liquid film thickness data were slightly underpredicted by existing correlations.

Download Full-text

Segmentation of Compressed High Speed Video Images of Vocal Folds

2020 28th Signal Processing and Communications Applications Conference (SIU) ◽

10.1109/siu49456.2020.9302268 ◽

2020 ◽

Author(s):

Melih Yilmaz Ogutcen ◽

Turgay Koc

Keyword(s):

High Speed ◽

Vocal Folds ◽

High Speed Video ◽

Video Images

Download Full-text

Comparing Spray from Tires Rolling on a Wet Surface

Tire Science and Technology ◽

10.2346/tire.14.420302 ◽

2014 ◽

Vol 42 (3) ◽

pp. 145-165 ◽

Cited By ~ 1

Author(s):

Dennis A. Plocher ◽

Fredrick K. Browand

Keyword(s):

High Speed ◽

Careful Examination ◽

Controlled Environment ◽

Laboratory Setting ◽

High Speed Video ◽

Video Images ◽

Limited Success ◽

Truck Tires ◽

Time To Drain ◽

Tire Spray

ABSTRACT Tire spray generated as automobile or truck tires roll over a wet roadway is a familiar hazard to all drivers. Past efforts to mitigate the effects of tire spray have focused on inventing and testing add-on devices to suppress, redirect, or contain spray. These devices have had only limited success in controlling spray. An alternate approach would be to examine tire spray at the source—the tire and wet roadway. This article describes a device designed to simulate tire spray in a laboratory setting, allowing a careful examination of spray in a controlled environment. The device limits the spray to that produced from water passing through a tire groove and then carried away from the roadway by the rotating tire. The spray pattern downstream of the tire patch is captured with high-speed video and stored on disk. The video images are then processed as desired by computer. A concept “time-to-drain” is introduced to characterize the angle at which spray leaves the tire. Time-to-drain is then used to compare the spray patterns of different tires.

Download Full-text