Thermal Radiometry

The thermal radiometry can trigger events based on the temperature measured within the specified image areas. Note that you can define different measurement areas for every event profile.

To do so, you can create different temperature events, which react to different areas and trigger values.

Important Notes:

Events of the Thermal Radiometry type can only be used if the sensor is running in linear mode. Open the Setup Menu > Image Settings > Thermal Sensor Settings dialog and activate the Linear Mode.
The temperature of objects in the image as determined by the thermal sensors is influenced mostly by the following factors:
- Surface properties and object color
- Distance from the sensor to the objects
- Properties of the atmosphere between the sensor and the objects
This means that the sensor can deliver different temperature values depending on the distance to the object and the current scene. In order to define events that are based on temperature trigger values, you first need to determine the current temperature values measured in the scene. To do so, you can use the variables $(SEN.TTR.CELSIUS) and $(SEN.TTR.FAHRENHEIT). The determined values can then be used to set the trigger value as shown below.

General Settings of the Thermal Radiometry

Show Measurement Area

To display the measurement area of a Thermal Radiometry event profile, select the corresponding profile in the Environment Events dialog.

Edit Measurement Area

The measurement area can be defined as a rectangle or as a polygon.

Rectangle syntax:
image sensor, horizontal position, vertical position, width, height

Example: 0,270,190,100,100

Polygon syntax:
image sensor, poly=<hor. coordinate>x<vert. coordinate>{/<hor. coordinate>x<vert. coordinate>}

Example: 0,poly=270x190/270x289/369x289/369x190

Notes:

The measurement area refers to the entire image sensor.
If the camera image has been mirrored or rotated, the coordinate system of the windows changes accordingly.

Parameter	Description
Image sensor	Selects the image sensor (camera image) to use for this area definition: `0`: Right camera image on dual cameras, default setting on mono cameras. `1`: Left camera image on dual cameras.
Horizontal position	Number of pixels measured from the left edge of the visible image to the left border of the area (based on a MEGA image 1280x960).
Vertical position	Number of pixels measured from the bottom edge of the visible image to the bottom border of the area (based on a MEGA image 1280x960).
Width	Width of the area in pixels (based on a MEGA image 1280x960).
Height	Height of the area in pixels (based on a MEGA image 1280x960).
Horizontal Coordinate	Number of pixels measured horizontally from the left edge of the visible image to the polygon corner (based on a MEGA image 1280x960).
Vertical Coordinate	Number of pixels measured vertically from the bottom edge of the visible image to the polygon corner (based on a MEGA image 1280x960).

Note: If you would like to define a new measurement area, open the Environment Events dialog and follow the instructions of the Graphically Entering Image Areas help page.

Trigger Mode

Use this parameter to specify when to trigger the event. The following modes are available:

One Pixel:	Triggers the event if one pixel in the measurement area is either higher or lower than the specified value.
Percent:	Triggers the event if more pixels in the measurement area are either higher or lower than the specified percentage.

Temperature Unit

Show the temperatures either in degrees Centigrade (°C) or Fahrenheit (°F).

Trigger Values

Enter the temperature value that is used to trigger an event when it exceeds or when it drops below the value (depending on the setting of the Comparison parameter, see below).

Comparison

Select between triggering the event when it exceeds or when it drops below the specified trigger value.

Action Type

Define how often the event is to be triggered:

First:	The event is triggered only once, i.e., when the condition is first detected.
Every:	The event is triggered every time as long as the condition is true.

Konfiguration sichern

Klicken Sie auf Setzen, um die Einstellungen zu aktivieren und bis zum nächsten Neustart der Kamera zu sichern.

Klicken Sie auf Voreinstellung, um diesen Dialog auf die werkseitigen Voreinstellungen zurückzusetzen (dieser Button wird nicht in allen Dialogen angezeigt).

Klicken Sie auf Wiederherstellen, um alle Änderungen seit dem letzten permanenten Speichern der Konfiguration zu verwerfen.

Beenden Sie den Dialog durch Klick auf Schließen. Hierbei wird geprüft, ob Änderungen der Gesamtkonfiguration vorliegen. Ist dies der Fall, werden Sie gefragt, ob die Gesamtkonfiguration dauerhaft gesichert werden soll.

de, en