Add low quality face condition

web/packages/new/photos/services/ml/cluster.ts

@@ -474,3 +474,12 @@ const clusterBatchLinear = (
 
     return state;
 };
+
+/**
+ * Return true if the given face is above the minimum inclusion thresholds, but
+ * is otherwise heuristically determined to be possibly spurious face detection.
+ *
+ * We apply a higher threshold when clustering such faces.
+ */
+const isBadFace = (face: Face) =>
+    face.blur < 50 || (face.blur < 200 && face.blur < 0.85) || false; //face.isSideways,