+ maxDarkStainRatio: float
+
+ stainArea: float // Factor of a RBC area. 0.5 means the half of RBC area.
+ stainLevel: float // > 1
+ maxStainRatio: float // [0, 1]
+
+ infectionArea: float // Factor of a RBC area. 0.5 means the half of RBC area.
+ infectionLevel: float // > 1