这个问题通常是由于光线条件不理想或面具没有正确地与人脸对齐所引起的。下面的示例代码展示了如何使用FaceFilter库创建一个基本的面具，并使用光线过滤器解决光照问题。这应该可以解决面具闪烁的问题。

import com.google.ar.core.AugmentedFace;
import com.google.ar.core.Pose;
import com.google.ar.core.TrackingState;
import com.google.ar.sceneform.rendering.ModelRenderable;
import com.google.ar.sceneform.rendering.Renderable;
import com.google.ar.sceneform.rendering.Texture;
import com.google.ar.sceneform.rendering.ViewRenderable;
import com.google.ar.sceneform.ux.AugmentedFaceNode;
import com.google.ar.sceneform.ux.FaceFilter;
import com.google.ar.sceneform.ux.AugmentedFaceNode;

public class MyArActivity extends AppCompatActivity {
  private Texture faceMeshTexture;
  private ModelRenderable faceMeshRenderable;
  private ViewRenderable faceRegionsRenderable;
  private FaceFilter faceFilter;

  // Other ARCore initialization code here

  private void initializeFaceFilter() {
     // Set up the texture and renderable for the mask
     faceMeshTexture = Texture.builder()
        .setSource(context, R.drawable.my_face_texture)
        .build();

     ModelRenderable.builder()
         .setSource(context, R.raw.my_face_mesh)
         .build()
         .thenAccept(renderable -> faceMeshRenderable = renderable);

     ViewRenderable.builder()
         .setView(context, R.layout.my_face_regions_layout)
         .build()
         .thenAccept(renderable -> faceRegionsRenderable = renderable);

     // Create the face filter with the mask and region renderables
     faceFilter = new FaceFilter(faceMeshRenderable, faceMeshTexture, faceRegionsRenderable);
     faceFilter.setOnFaceChangeListener(this::onFaceChanged);
     arFragment.getArSceneView().getScene().addOnUpdateListener(this::onUpdateFrame);
  }

  private void onFaceChanged(AugmentedFace face, AugmentedFaceNode faceNode) {
     // Rotate the mask for proper alignment with the user's face
     Pose pose = face.getCenterPose().extractRotation();
     faceNode.setLocalRotation(pose.getInverse().compose(Pose.IDENTITY).extractRotation());

     // Set the light estimation for the face regions renderable
     faceRegionsRenderable.getMaterial().setFloat3("lightEstimation", face.getLightEstimate().getColorCorrection());
  }

  private void onUpdateFrame(FrameTime frameTime) {
     // Filter the face if it is being tracked