Configuring intrusion detector perspective settings in KiwiVision™ - KiwiVision™ 4.0 GA

KiwiVision™ Video Analytics Guide 4.0 GA

series
KiwiVision™ 4.0 GA
revised_modified
2018-11-05

Before you can monitor KiwiVision™ video analytics in Security Desk, you must configure intrusion detector perspective settings for your camera.

Procedure

  1. In Config Tool, select your intrusion detector.
  2. In the Perspective tab, configure the Perspective objects in the video.

    1. Click and drag each object to configure the perspective.
      Near object
      The Near object rectangle is used to set the approximate size of objects or individuals that you want to detect in the image foreground (close to the camera).
      Far object
      The Far object rectangle is used to set the approximate size of objects or individuals that you want to detect in the image background (far from the camera).
    2. Click the white dots to adjust the object size as required.
      Tip: Use the grid to help you set the orientation of the perspective relative to the ground plane. Changing the size or location of the near or far object affects the location of the grid and the orientation of the perspective relative to the ground plane.
  3. In the Perspective section, configure the perspective settings as required:
    Block size
    Defines the size of analysis units relative to the specified object or person size in the image. If you set a low value, the required computing power increases, but the distinction between different object sizes in the image is more accurate. The default setting is 40 %. You can specify values in the range 0 - 100 %.
    Min. block size
    Defines how large (in pixels) an analysis unit must be in the image. The default setting is 18 px. You can specify values in the range 10 - 270 px.
    Object height
    Defines the actual object height for near and far objects that you want to monitor for intrusion. The default setting is 1.8 m (5.7 ft), the average height of a person. You can specify values in the range 1 - 2 m (3.3 - 6.6 ft).
    Tip: Ensure that the Object height defined in the Perspective section matches the actual height represented by the near and far objects drawn or modified in the video.
    Scene depth
    Defines the scene depth distance in the view direction of the camera. The scale represents the size of an average person. The default setting is 50 %. You can specify values in the range 0 - 100 %.
  4. Enable or disable Low block resolution as required.
    Low block resolution
    Uses less accurate motion detection per block. The required computing power is reduced but the intrusion detection analysis is less accurate.
  5. Click Apply.

After you finish

You can now configure your intrusion detector Areas tab settings.