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Caltrans
> DRI
Home >
Operations >
VideoSync >
Modes of Operation
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Modes of Operation
Graph Mode
All detectors can be graphed side by side across a range of time scales.
Below we’ve auto advanced to the trailing edge of a detection event for the
lane 1 downstream detector, which the lane 1 vehicle has just finished
crossing over.

This QuickTime clip of VideoSync shows typical operation of video playing
in sync with the detection data.
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Ground Truth Vehicle
Addition Mode

The speed, length, and picture of individual vehicles can be captured
from the video. This data is stored in a data structure which can be used to
“ground truth” the detectors.
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Ground Truth Vehicle
Review Mode

The speed, length, and picture of individual vehicles can be reviewed and
located back in the original video. The exact time the real vehicle is over
any detection zone can be determined.
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Tabular
Mode

Conventional Speed, Volume, and Occupancy can be tabulated in 30 second
or other time intervals. The time offset can be adjusted to exactly match
that used by the TMC. Tabular data can be exported to a spreadsheet or
database for further analysis. |
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Last Updated:
09/28/2006
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