Canon VB-H47 Operation Manual page 118


Abandoned Object Detection, Removed Object Detection
Detection frames appear on the objects that have been detected for movement and stayed still for five seconds. If
[Object Height (%)], [Object Width (%)] and [Duration (Sec)] are not met, the detection frame is displayed with a
white dot line. If [Object Height (%)], [Object Width (%)] and [Duration (Sec)] are all exceeded, the detection frame is
displayed in the same color as the detection area to indicate that something has been detected.
Important
• A removed object may not be detected in the following cases.
– When long and thin objects are removed
– When the same object is placed continuously and some of the objects are removed
– When objects of the same shape are placed together and some of the objects are removed
• If the video inside the detection area changes without an object being removed, it may be misdetected as a removed object.

Camera Tampering Detection
Moving objects detected are displayed with detection frames. If an object is smaller than [Change Ratio (%)], its
detection frame is displayed with white dot line. If the obscured area in the video exceeds [Change Ratio (%)], the
detection frame takes on the same color as the detection area, indicating that the camera has "detected" tampering.
Note
• Detection will not be possible for three seconds after the change ratio for camera tampering detection is changed, or when
switching to camera tampering detection settings from settings for another detection mode.

Passing Detection
All moving objects detected are displayed with white detection frames.
When the [Decision Point] of an object that meets the [Object Height (%)] and [Object Width (%)] setting crosses a
detection line in the direction set in [Passing Direction], the detection frame changes to the same color as the
detection line, and the status becomes "detected". Notification of a passing detection event occurs only when the
decision line is crossed.
Important
• Perform a detection test after configuring passing detection to make sure the detection frame of a moving object continues to
be displayed.
Detection Frame
Detection Frame
Detection Frame
Decision point
Detection line
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Detection Frame