Intelligent Function Detection - Setting Detection Criteria per Detection Type
Article ID: ART138730 | Date published: 05/13/2015 | Date last updated: 08/17/2015
 

Description

Intelligent Function Detection - Setting Detection Criteria per Detection Type

Solution

Intelligent Function Detection - Setting Detection Criteria per Detection Type

Specify different detection criteria for each detection type.

 

Detect criteria for [Moving Object Detection]  

Set detection areas where you want to detect moving objects

 For [Object Size (%)], enter a value or move the slider to set the ratio of the size of an object moving in the detection area to the size of the detection area.

When the ratio of an area where the camera has detected a moving object exceeds the value set for [Object Size (%)], detected mode is triggered to ON.

When [Object Size (%)] is changed, an indicator frame showing the size of the object is displayed for 1 second in the center of the image display area, allowing specification of the settings while checking the size ratio.

Any moving objects detected are shown with contour lines. If a moving object is smaller than [Object Size (%)], its contour lines are white. If the moving object is larger than [Object Size (%)], its contour lines take on the same color as the detection area, indicating that “detection” mode has been triggered to ON.

Detect criteria for [Abandoned Object Detection]

Set areas where you want to detect abandoned objects as detection areas

[Object Size (%)]

Enter a value or move the slider to set the ratio of the size of an object that was left behind in the detection area to the size of the detection area. When [Object Size (%)] is changed, an indicator frame representing the area of the object is displayed for 1 second in the center of the image display area. This allows you to check the size ratio of the abandoned object detection area while specifying the [Object Size (%)] setting.

[Duration (Sec)]

Set the time that must elapse after an object has been left. If the values for [Object Size (%)] and [Duration (Sec)] are exceeded, detection mode is triggered to ON.

Any moving objects detected are shown with contour lines. If [Object Size (%)] and [Duration (Sec)] are not exceeded, contour lines are white. When all detection criteria are met, contour lines take on the same color as the detection area and “detected” mode is triggered to ON.

 

Detect criteria for [Removed Object Detection]

Set detection areas for objects whose removal you want to detect

For [Duration (Sec)], set the time that must elapse after the object has been taken away. Detected mode will be triggered to ON when an object is taken away from the detection area for a period longer than the set [Duration (Sec)].

Any moving objects detected are shown with contour lines. As long as [Duration (Sec)] has not elapsed, contour lines are white. When [Duration (Sec)] has elapsed, contour lines take on the same color as the detection area, indicating that “detected” mode has been triggered to ON.

 

Important

Set detection areas for removed object detection so that they precisely match the contours of the object in question. Influence from the target object’s shadow or adjacent objects may result in the target object being recognized as larger than actual and will not trigger Removed Object Detection. In such cases, reconfigure the detection area to outline the recognized target object

 

Any moving objects detected are shown with contour lines. As long as [Duration (Sec)] has not elapsed, contour lines are white. When [Duration (Sec)] has elapsed, contour lines take on the same color as the detection area, indicating that “detected” mode has been triggered to ON

 

Detect criteria for [Camera Tampering Detection]

For [Camera Tampering Detection], the entire image display area becomes the detection area. “Detected” mode will be triggered to ON when the image is obstructed over an area exceeding the ratio set in [Change Ratio (%)].

 

When [Change Ratio (%)] is changed, an indicator frame representing the area that can be obstructed is displayed for 1 second in the center of the image display area. This allows you to check the change ratio of the camera tampering detection area, which occupies the entire image display area, while specifying the [Change Ratio (%)] setting

Any moving objects detected are shown with contour lines. If it is smaller than [Change Ratio (%)], contour lines are white. If the image is changed for an area larger than [Change Ratio (%)], contour lines take on the same color as the detection area, indicating that “detected” mode has been triggered to ON

Note

Detection will not be possible for three seconds after the change ratio is modified when camera tampering detection is selected, or when switching into camera tampering detection from another detection mode.

 

Detect criteria for [Passing Detection]

Set the passing direction and decision point of the moving object for the detection line that the moving object will cross.

[Passing Direction]

Select the direction for moving objects to pass the detection line. When an object that moves in the selected direction passes the detection line, “line crossed” is detected. A preview display shows the selected passing direction on the detection line in the image display area.

[Decision Point]

Select the decision point of a moving object in accordance with a detection line. When a decision point selected here crosses the detection line, “line crossed” is detected. In the image display area, a cross mark is displayed to indicate the decision point in the detection frame.

[Object Size (%)]

Enter or use the slider to set the size ratio of moving objects for the entire screen.

When a moving object exceeds the value set for [Object Size (%)], it becomes a passing detection target. When [Object Size (%)] is changed, an indicator frame showing the size of the object is displayed for 1 second in the center of the image display area, allowing specification of the settings while checking the size ratio.

Important

Perform a detection test in advance to make sure that the detection frame continues to be displayed for a subject targeted for passing detection

Note

  • A ratio of up to 30% can be set for [Object Size (%)] in passing detection.
  • A passing detection event is notified only when the decision line is crossed. Take care in setting the operation to be performed when an event occurs.