Figure 2.

(a) Examples of nuclei from each classification group; 1: interphase, 2: prometaphase, 3: metaphase, 4: early anaphase, 5: late anaphase, telophase, and early G1. The images are 34 µm × 34 µm, and they are modified to show a white background, for ease of viewing. (b) Nuclear area versus DAPI intensity (color gives nuclear density), with classification contours that enclose regions that contain primarily G1 (solid), S (dashed), G2 (dot-dashed), and M (black/white dash) phase cells. The right M contour primarily contains classes 3 and 4, whereas the left M contour primarily contains class 5. (c) Confusion matrix of the test set, based on the classification of different cell classes.