It's possible to search the video recording by line crossing from the functional menu of Video archive window.
Search by line crossing is possible only when Object trajectories DB and the Tracker object are created on the camera that is used for searching in Intellect software package (Detector object, see Intellect software package: Administrator's Guide manual).
Search by line crossing runs only on a given day.
How to set a date is described in Fragment search by the date and time of creation section.
To search by line crossing do the following:
Do all necessary operations with the line. Operations with the line are performed in the table.
Press the left mouse button in video surveillance window
End point of the line creating
Hover cursor over the end point and pressing the left mouse button shift the mouse
End point of the line shift
Hover cursor over the end point and click the right mouse button
To select the type of the object that was crossing the set line it's necessary to click. Available types of the object are performed below.
By pressing the left mouse button to one of grey arrow's end, set the traffic direction of the object across the line. Selected arrow becomes white.
Approximate speed of objects which are to be found is displayed close to arrow. At minimal and maximal value of speed the "?" sign will display, and only records containing line crossing regardless of speed will be searched for. It is possible to change value of speed by changing arrow length moving arrowhead with pressed left mouse button.
As a result the search selects the video recordings by given parameters. Search results are displayed in timestamps column.
Setting the traffic direction of the object by VMDA detector depends strongly on Tracker object settings (see Intellect software package: Administrator's Guide manual). With bad settings the traffic direction can be determined incorrectly and, consequently, results can be wrong while searching in line crossing archive. The settings of Tracker object should be used experimentally for every case.