Face Pose

Analyzes face rotation and position of a face in a video stream. The event listener continuously gets the data in a JSON object as FaceAI detects face rotation in a video stream. The data of the face rotation angle is represented in terms of radiants as Pitch, Roll, and Yaw.

Method

To analyze face rotation and position in a video stream.

• Class: EnxFaceAI
• Method: EnxFaceAI.startFacePose(callback):

Parameter

• callback: Callback to know that processing request has been accepted.

Event Listener

• face-pose: This event notification is received repeatedly with the Face Rotation & Position Analysis report as a JSON object.

JSON Object: Received with Face Rotation & Position Analysis data.

{	output: {
		pose: {
			pitch: Number, 
			roll: Number, 
			yaw: Number
		}
	}
}

Analysis Data Explanation

• output : Face Rotation & Position Report
  • pose : Filtered (smoothened) pose rotation angles expressed in radiants as pitch, roll and yaw.

Note: The maximum and minimum ranges for rotation angles are currently limited to +- (Pi/2) in radians, corresponding to +- (90°) in degrees, for each of the 3 axes. The zero point is when a face looks straight at the camera.

Sample Code

// Start Face Pose
faceAI.startFacePose((res) => {
	if (res.result === 0) 
		window.addEventListener("face-pose", (evt) => {
			console.log(evt.detail, "face-pose");
		});
	}
});