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 includes DVD with software, manual,
detail vibraimage information, dongle and web camera, see on the
picture.
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