Documentation for Axxon PSIM 2.0. Documentation for other versions of PSIM is available too.

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You can search for a video recording by line crossing from the function menu of the Video archive window.

Note

Search by line crossing is possible only when:

  1. VMDA metadata storage and the Tracker objects are created for the camera that is used for searching in Axxon PSIM (see Configuring smart video detection tools).
  2. VMDA metadata storage is selected for the corresponding camera on the settings panel of the Monitor object (see Selecting and configuring video cameras).

You can search by line crossing only on a given day.

Note

For the information on specifying the date, see Fragment search by the date and time of creation.

To search by line crossing, do the following:

  1. From the Archive search drop-down menu, select Line crossing.
  2. Using the left mouse button, set end points of the line in video recording display.

  3. You can change a line using the actions described in the table below.

    Operation

    Operation result

    Click the Surveillance window

    An end point of the line is created

    Hover the cursor over the end point, click the left mouse button and move the mouse

    An end point of the line is moved

    Hover the cursor over the end point and click the right mouse button

    A line is deleted

    Note

    You can remove the  button by pressing the Ctrl + Q key combination. When you press this key combination again, the button reappears. The button also automatically disappears when you create and move points of a search line and reappears after a line is created. 

  4. To select the type of an object that crossed the set line, click. Available types of objects are listed below.

    1.  Any object. Search finds video recordings in which a line is crossed by any object.
    2.  Human. Search finds video recordings in which a line is crossed by an object, which width is less than height.
    3.  Car. Search finds 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. Left-click one of arrows to exclude crossings in one of the directions. The selected arrow is grayed out.
    Approximate speed of objects that you want to find is displayed next to an arrow. At minimun and maximum value of speed, the "?" sign is displayed, and only records containing line crossing regardless of speed are searched for. You can change the value of speed by changing an arrow length by moving an arrowhead with a pressed left mouse button.

    Note

    When you add a line, an arrow has a minimum length.


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

You can cancel the search by line crossing at any time by pressing the Esc button on the keyboard. In this case, no search results are displayed, and the text [none] is displayed in the list of video fragments.

After the search is complete, press the Esc key to clear the list of search results and exit the search by line crossing mode.

Note

Detection of object movement direction by the line crossing detector strongly depends on the settings of the Tracker object (see Creating and configuring the Tracker object). When you didn't select the settings correctly, there is a probability of incorrect detection of the movement direction and, consequently, when searching the archive by line crossing there can be false results. You must select the settings of the Tracker object experimentally for each case.