Figure 1 | Scientific Reports

Figure 1

From: Deep-learning-based AI for evaluating estimated nonperfusion areas requiring further examination in ultra-widefield fundus images

Figure 1

Bland–Altman plot (top) for verification and examples of ground truth/eNPA in the fine match case (bottom), including centroid locations. Bland–Altman analysis, a graphical scheme, drawing a scatterplot in which the X- and Y-axes represent the mean and difference of areas of the paired data (ground truth and eNPA), respectively. Point colors (difference between ground truth and eNPA) represent elements of the contingency table for validation, including true and false positives and negatives. The X-axis shows the mean area of the paired data (ground truth and eNPA), and point colors (centroid distance) represent elements of the contingency table, as in a Bland–Altman plot. The circled point corresponds to the fine match case. Limits of agreement are shown as the bias (solid blue line) with 1.96σ (solid red lines). Blue area in the bottom left fundus photo is the NPA ground truth, annotated using fluorescein angiography. Green area in the bottom right fundus photo is the AI-eNPA. #1: A poor quality image with eyelids. #2–4: Poor quality images with eyelashes.

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