A Parallel Nonrigid Registration Algorithm Based on B-Spline for Medical Images

Figure 3

Accuracy comparison with different similarity metrics: (a) reference image; (b) moving image, which is distorted reference image with geometric distortion; (c) ground truth deformation field; (d)–(f) registered images using SAD-based, SSD-based and our algorithm, respectively; (g)–(i) estimated transformation using SAD-based, SSD-based, and our algorithm, respectively.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)