For the USB 3 uEye XC, you can configure via the face detection feature if the camera should find faces in the image automatically.

•Open the "Face detection" dialog via "View > Face detection" or click on in the toolbar.

Fig. 151: Face detection

For UI-3013XC, the face detection is only active in live mode but not in snapshot mode.

1.Check the "Enable" option to activate the face detection.

2.Via the "Search angle" dropdown list you define a facial orientation angle if the camera for example is turned by 90°. An angle of 0° corresponds to the 12 o'clock position,90° to the 15 o'clock position and so on.

3.Via the "Number of marked faces" dropdown list you preset the maximum number of faces that should be marked in the camera image. The detected faces are marked with an overlay box. The box marking the largest face detected has a red border, the boxes for the other faces have white borders.

4.Besides the "Max. number of detected faces" entry you can see the maximum number of faces that the current camera model can detect.

5.Besides the "Number of detected faces" entry you can see how many faces have been detected in the current image.

6.The detected faces are displayed in the list. The faces are sorted by size.

oPosture
The face detection feature can distinguish 9 different viewing directions or postures of the head. The detected posture is indicated by a symbol.

0	1	2
3	4	5
6	7	8

oAngle
Orientation of the current face in degrees (0/90/270). An angle of 0° corresponds to the 12 o'clock position, all other angles apply clockwise.

oX/Y/Width/Height
Position and size of the face.

7.Via the "Overlay width" slider you can define the line width for the overlay boxes that indicate the detected faces.

Note on face detection Upside-down faces are not detected. You have to turn the camera or enable the mirror function in order to detect upside-down faces. The position and size coordinates of the detected faces depend on the image resolution. The coordinate (0,0) is at the top left corner of the image.

Resetting the parameters

Click on the "Default" button to reset all parameters to the model-specific defaults.