Fig. 6
Top left Complex Bulge pattern (574 × 572 px) and top right The DoG output at scale 2 (\( \sigma_{c} = 2 \))—enlarged that highlights the bulge effect in the pattern. Bottom The binary edge map of the pattern at eight different scales (\( \sigma_{c} = 1\,\,{\text{to}}\,\,8 \)) with incremental steps of 1. Other parameters of the DoG model are: \( s = 1.6 \), and \( h = 8 \) (the Surround and Window ratios, respectively) (Reproduced by permission from [145])