[Face Detection LandMark] Add a confidence score to the eye landmarks when wearing a black glasses

[AnyLifeZLB]

Why face-detection can still detect mouth landmark when I wear a mask.

can we Add a confidence scores of the landmarks when face landmark is hidden by glasses mask ?

and how can i know there are no mouth landmark when I wear a mask

public class FaceLandmark {
private final int zza;
private final PointF zzb;
confidence score ? // flag landmark is hidden by things
.........

Mobile environment
Android, IOS or both

Android first