def fitting_methods_equivalent_without_rot_reg():
pts0 = np.random.randn(100,3)
pts1 = np.random.randn(100,3)
lin_ag, trans_g, w_ng = tps.tps_fit(pts0, pts1, .01, 0)
lin2_ag, trans2_g, w2_ng = tps.tps_fit2(pts0, pts1, .01, 0)
assert np.allclose(lin_ag, lin2_ag)
assert np.allclose(trans_g, trans2_g)
assert np.allclose(w_ng, w2_ng)
def tps_regrot_with_quad_cost():
x_na = np.random.randn(100,3)
y_ng = np.random.randn(100,3)
bend_coef = .1
rot_coef = 19
def rfunc(b):
return rot_coef*((b - np.eye(3))**2).sum()
correct_lin_ag, correct_trans_g, correct_w_ng = tps.tps_fit2(x_na, y_ng, bend_coef, rot_coef)
lin_ag, trans_g, w_ng = tps.tps_fit_regrot(x_na, y_ng, bend_coef, rfunc, max_iter=20)
assert np.allclose(correct_trans_g, trans_g, atol=1e-2)
assert np.allclose(correct_lin_ag, lin_ag, atol=1e-2)
assert np.allclose(correct_w_ng, w_ng,atol=1e-2)