VibraImage system hardware
It is possible to use standard video
system for vibraimage registration, like web cam or digital camera, or analogue camera with
digitizer. The camera resolution 640x480 is OK for vibraimaging and vibraimage quality highly depends on camera noise. The best results were
achieved with simple and cheap web cam with 1/3" image CMOS sensor like AVerCam
or Genius Eye 311Q, Genius Look 1320, Genius Look 320S,
Genius i-Look
1321.
It is possible to use Microsoft LifeCam Products
VX-5000, VX-5500, VX-6000.
Basic specifications of video cameras for vibraimaging
are:
resolution, elements: 640x480;
frequency, frame/sec, no less than: 15,0;
dynamic range, dB, no less than: 80;
object working illumination, lx, no less than: 100;
objective angle, deg: 10-30;
distance to object, m: 0,5-3;
distance to computer, m, no more than: 5;
digital signal interface: USB 1.0, 2.0;
power voltage (USB), V: 5.
Latest vibraimage software versions need powerful computers, more power gives more processing
possibilities. Typically web camera stands about 0,5 m opposite the tested
person and head has maximum visible size on the monitor. Standard delivery set
[1] includes DVD with software, manual, detail vibraimage information, dongle
and web camera, see on the picture.
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