Examples of curves of the DoG-L7 (A-E) and DoG-L8 models (F), but in 1D.

<p><b>A</b>: amplitude of the 1^st Gaussian (<i>h</i>₁); <b>B</b>: spread of the 1^st Gaussian (<i>σ</i>₁); <b>C</b>: amplitude of the 2^nd Gaussian (<i>h</i>₂); <b>D</b>: spread of the 2^nd Gaussian (<i>σ</i>₂); <b>E</b>: slope of the multiplying line (λ); <b>F</b>: center of the 2^nd Gaussian (<i>μ</i>₂). A profile length of 20 pixels was set to the vessel. In each plot a parameter is varied (inside a established range) at a time, with the remaining parameters fixed (<i>t</i> = 0.5, <i>h</i>₁ = −0.5, <i>μ</i> = 10, <i>σ</i>₁ = 3, <i>h</i>₂ = −0.33, <i>σ</i>₂ = 1, λ = 0.02), in order to evaluate the influence of that parameter in the overall model shape.