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To search by line crossing, do the following:

1. Select Line crossing from Search in archive dropdown menu in the functional menu.
   
2. Pressing the left mouse button set end points of the line in video recording display field.
   

3. Do all necessary operations with the line. Operations with the line are performed in the table.

   Operation	Operation result
   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	Line deleting

   
   

4. 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.

   1.  Any object. Search will give out the video recordings in which line is crossed by any object
   2.  Human being. Search will give out the video recordings in which line is crossed by an object which width is less than height.
   3. Image Modified Car. Search will give out the video recordings in which line is crossed by an object which width is greater than height.

5. By default, the search is set to find line crossings in both directions. Click the left mouse button to one of arrows to exclude crossings in one of the directions. De-selected arrow becomes gray.

   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.

   Info
   title Note.
   Arrow has minimal length while adding.

   
   
   As a result, the search selects the video recordings by given parameters. Search results are displayed in timestamps column.
   

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