Vision Research Phantom v1211, Руководство пользователя

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Chapter 5: Measurements
35
Measurements
5
Introduction
High-speed photography is as much of an engineering tool
as an oscilloscope, spectrum analyzer, or logic analyzer.
The photographic technique enables us to visualize and
analyze motion, especially motion that is too fast for the
human eye or conventional cameras to perceive.
For decades, Phantom Cine (high-speed digital video)
files have been used to measure moving objects by
the defense, scientific and research, and industrial
communities to extract and quantify motion from a file.
As high speed digital cameras continue to make
advancement in recording speeds, sensitivity and
resolutions, so must the motion analysis software used
to extract the data they record. This data allows the
defense community to examine the speed, angle and
angular speed of a shock wave from an explosive device.
Automotive engineers require this information to evaluate
the safety and effectiveness of an airbag design by
determining the time, speed, and angle it takes the
airbag to deploy fully. Studies by the scientific and
research communities require it to analyze human
locomotion by measuring the angle a knee joint bends
and the compression the knee joint endures while running,
or the speed of a lightning bolt. Not to mention
manufacturers needing it to measure the angular speed
(Revolutions Per Minute) a new hard drive motor can
spin without causing damage to the disk, or being able
to measure the effect the angle of impact a golf club will
have on the rotational speed of a golf ball.
The ability to analyze all of this data quickly and
accurately inherently decreases product development
time, and more importantly reduces research and
development expenditures. Of course extracting this
information from a digital high speed video is only
as good as the tools used to accomplish it.