Fig. 6.

Sequence of synthetic fractal images with new isosceles triangles added at each recursive step (0 to 12). The three images at steps 3, 6, and 9—used as ground truth—are also presented in the left column. The text refers to these images with a combination of the letter “f” and a number: f6 is the image at recursive step 6; f12 is the image at recursive step 12, i.e., the last image.