FARO
®
Laser Scanner Manual
65
Chapter 7: Controller Software
Horizon Weighted Metering - With horizon weighted metering mode, the
camera will use the light information coming from the horizon to determine its
exposure setting. This mode is commonly used in scenarios with bright light
coming from directly above (e.g., indoors with bright ceiling lighting or
outdoors with bright sunlight coming from directly above) and if you want to
achieve the most correct balance of light and exposure for objects at the
horizon. This mode is the default setting. Compared to even weighted
metering, this mode will increase scan duration by approximately 14 seconds.
Figure 7-44: Horizon weighted metering
If the vertical scan area is limited, then the area used to determine the
exposure (i.e., the exposure metering area) might move away from the
horizon. This is the case if the vertical start angle is set to a value > -30° or if
the vertical end angle is set to a value < 30°. The exposure metering area will
then be moved up or down and set to the center of the remaining vertical scan
area. The following figures illustrate this behavior.
Figure 7-45: Exposure metering area (highlighted yellow) for the full vertical
scan area
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