Face Arousal Valence

Analyzes face arousal valence in a video stream. The event listener continuously gets the data in a JSON object as FaceAI analyzes the face arousal valence.

Methods

• EnxFaceAI.startFaceArousalValence(config, callback): To start analyzing the face arousal valence in a video stream.
• EnxFaceAI.stopFaceArousalValence(callback): To stop analyzing face arousal valence in a video stream.

Parameters

For Method: EnxFaceAI.startFaceArousalValence(config, callback)

• config : JSON Object. This is to configure or customize parameter using which the Face Arousal Valence would be analyzed.
  • smoothness : Number. Default 0.70. Range 0-1. Value closer to 1 provides greater smoothing and slower response time. Lower values provide lesser smoothing but faster response time. Set it to 0 (zero) if you need the raw signal.
• callback : Callback to know that processing request has been accepted.

For Method: EnxFaceAI.stopFaceArousalValence(callback)

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

Event Listener

• face-arousal-valence: This event notification is received repeatedly with the Face Arousal Valence report as a JSON object.

JSON Object: Received with Face Arousal Valence Analysis data.

{	output: {
		arousalvalence: {
			arousal: Number, 
			valence: Number
		}
	}
}

Analysis Data Explanation

• output : Face Arousal Valence Report
  • arousalvalence : Filtered (smoothened) values.
    • arousal : Range 1.0 to 1.0. It represents the degree of engagement (positive arousal), or disengagement (negative arousal).
    • valence : Range -1.0 to 1.0. It represents the degree of pleasantness (positive valence), or unpleasantness (negative valence).

Sample Code

config = {
	smoothness: 0.70 
};

// Start Face Arousal Valence
faceAI.startFaceArousalValence(config, (res) => {
	if (res.result === 0) {
		window.addEventListener("face-arousal-valence", (evt) => {
			console.log(evt.detail, "face-arousal-valence");
		});
	}
});

// Stop Face Arousal Valence
faceAI.stopFaceArousalValence((res) => {
	if (res.result === 0) {	}
});