FIGURE 10.

Mitosis project external validators results. Evaluation of tissue, mitosis, atypical and typical mitosis detection by three pathologists. Segmentation area features were rated for accuracy using the following scale: 1. Perfect or nearly perfect accuracy (95%–100%, no significant errors) 2. Very good accuracy (80%–95%, only minor errors) 3. Good accuracy (70%–80%, significant errors but still captures the feature well) 4. Insufficient accuracy (less than 70%, significant errors compromising feature recognition). The average value for tissue is in the range of 1 (Perfect or nearly perfect accuracy), and the detection of mitosis, atypical mitosis, and typical mitosis is in the range of 2 (very good accuracy).