Figure 3.

Overview of the stages of stomata morphometry extraction. (A) each stoma is detected using the CNN model described in Figure 1; (B) the contour is extracted; (C) a bounding box is applied to the contour; (D) the bounding box is rotated using the primary eigen vector and the stoma contained within the contour is cropped; and (E) morphometric measurements of the guard cell and pore are automatically extracted including guard cell and pore length and widths plus peristomatal groove distance.