我怎样才能只从 firebase ML Kit 人脸检测中获得情绪？

Question

may I know how can I only got the emotion type on the label? And may I know how many emotion type can ML Kit detect? Here are my code:

public void generateLabels(View v) {
    Bitmap bitmap = ((BitmapDrawable)image_holder.getDrawable()).getBitmap();
    InputImage image = InputImage.fromBitmap(bitmap, 0);
    ImageLabeler laber = ImageLabeling.getClient(ImageLabelerOptions.DEFAULT_OPTIONS);

    laber.process(image).addOnSuccessListener(new OnSuccessListener<List<ImageLabel>>() {
        @Override
        public void onSuccess(@NonNull List<ImageLabel> labels) {
            String labelText = "Result";
            for (ImageLabel label: labels) {
                String text = label.getText();
                float confidence = label.getConfidence();
                labelText += ("\n" + text + ": " + confidence);
            }
            final String finalLabelText = labelText;
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    textView.setText(finalLabelText);
                }
            });
        }
    });
}

I have some ideas on the label.getText to get all the value from ML Kit, but how can I handle only one type of it? Since I want to get the emotion type and doing the next.

Answer 1

If you consider training the emotion classifier for a specific person, you can use the result of MLKit Face Detection and calculate the features like (eye width/height), (eye-cheek distance/height of face) to feed the algorithms like KNN.

And for the future plan of ML Kit SDKs, could you provide the potential use case for the emotion recognition and the potential usage if possible?

Thanks!

Julie from ML Kit