Figure 3 of Simmons, Mol Vis 2018; 24:767-777.

Figure 3. Training the Weka Segmentation Tool. The Trainable Weka Segmentation Tool in FIJI allows users to apply various machine-learning segmentation algorithms to an image. We created a library of four sub-images with manually selected portions of the avascular retina (green), the vascular retina (red), and background (yellow). We then used these to train the Weka classifier.