Fig. 5From: Detecting Visually Observable Disease Symptoms from FacesTwo sets of features for Variant 6. 1st row illustrates the CIELAB features and their clusters of a normal face; 2nd row illustrates the CIELAB features and their clusters of a face with acne. Yellow circles are the results of applying Size Invariant circle detection. For above examples, 0 circle was found for the normal face; 119 circles were found for the acne featuring faceBack to article page