Documentation for Axxon PSIM 1.0.0-1.0.1.

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The Tag&Track function allows a PTZ camera to follow a moving object based on the trajectories obtained by a conventional stationary video camera using the Tracker object. Thus, first create and configure the following objects in Axxon PSIM to use the Tag&Track function:

  1. The PTZ camera (see Configuring PTZ IP cameras).
  2. The conventional (stationary) video camera with the Tracker object (see Configuring IP devices and Creating and configuring the Tracker object).

To configure the Tag&Track function, do the following:

  1. Create the Tag&Track object on the basis of the Camera object (not the PTZ camera!).

    Note

    If the camera is linked to a PTZ device, creating the Tag&Track object will not be available. If you first create this object, then link the camera to a PTZ device, then the settings for the Tag&Track object will not be available.

  2. From the PTZ drop-down list, select the PTZ device object linked to the corresponding PTZ camera that will be used for objects tracking (1).

  3. In the Auto switch field (2), enter the time period in seconds after which you want to automatically switch to the next object in the Automatic Tag&Track mode.

  4. Select a line in the table (3). To do that, left-click on any cell in the line.

    Note

    The lines can be sorted by one of the specified parameters. To do this, click on the name of the corresponding column.

  5. Click the Edit button (4). The Settings dialog box opens.
    If step 3 is skipped and no line is selected in the table, then the Settings dialog box will not open and the message «String not selected» will be displayed.

    Note

    • For calibration, a video image with a low resolution is used, so the display quality in the Settings window may differ from the original video image from the camera.
    • It is possible to display the video in a separate window and expand this window to the required size. To do this, right-click on the video image while holding down the Shift key on the keyboard. The video in the separate window allows the same operations as in the Settings dialog box.
  6. Click on a required point on the video image from the stationary camera (on the left). As a result, the X and Y fields are filled with this point coordinates (5). The point is highlighted with a red square on the video image.
  7. Rotate the PTZ camera (on the right) so that the green cross in the center pointed at the same point as selected on the stationary camera. Use the Up, Down, Left and Right buttons to control camera movement, and the + and - buttons to zoom in and out (6).
  8. In the Rate field (7), set the movement speed of the PTZ camera lens. Possible values are from 1 to 10, the default value is 1.
  9. Click the Request PTZ button (8).
  10. The PAN, TILT, ZOOM fields will be filled with the PTZ camera coordinates (9).
  11. If the check is required, then click the Send to PTZ button (10). The camera will be positioned to the obtained coordinates.
  12. Click the OK button (11). The coordinates are displayed on the Tag&Track object settings panel.
  13. Repeat steps 4-11 at least 5 times for different points on the video image. It is recommended to add as much points as possible.

  14. Click the Apply button.

    Note

    When too few points are set, or in some other cases when the points are not set properly, and the algorithm cannot process them, the "Invalid calibration" message is displayed after clicking the Apply button.

    In this case, click the OK button then add or edit the points.

Attention!

The following recommendations will help to configure the function better:

  1. The overview and the PTZ cameras should be close to each other. If they are far from each other, they can interpret the scene differently. Because of this, sometimes the algorithm may not operate correctly.

  2. The points set in the calibration setting should not be on the same line for both the overview and the PTZ camera. It is recommended to set the points for both cameras so that they evenly cover the entire frame.
  3. The recommended number of points that should be set is 4-10. If you add more points, the algorithm will be configured more precisely. However, this may increase the chance that some of the points are set up incorrectly, which may cause the decrease of the operation quality.

Configuring the Tag&Track function is completed.

Using Tag&Track

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