Figure 6.
Registration error as a function of regularization parameter, λ. Different parameters are tested on 5 sets of images acquired form 5 different patients. Blue lines: number of “active” landmarks M = 50 and σ = 50 mm; green lines: M = 50 and σ = 100; red lines: M = 75 and σ = 50. The distances between “passive” landmarks (accuracy of registration) are shown by solid lines, the distances between “active” landmarks (mismatch error) are shown by dashed lines.