Soft dB I-Track User guide - Manual (Page 6)

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Step 2 Take Background Picture
Before performing a sound mapping measurement, a background picture must be taken. In order
to do this, plug the digital camera on a USB port and click the “New Measure” button on the
software interface or on the intensity probe:
This will launch the background picture interface:
This interface allows adjusting the camera parameters, such as focus, luminosity and contrast. It
also allows checking for appropriate probe detection: place the probe with the visual tracking
device in the field of view of the camera and a green polygon should be drawn on the detected
probe. When satisfied with the image, click OK to accept and return to the main interface.