def interpolate_simple(self, parameters):
dN1 = self._N1 - self._center
dN2 = self._N2 - self._center
dNs = np.array([(1.0 - t) * dN1 + t * dN2 for t in parameters])
normals = self._center + dNs
normals = normalizeVectors(normals)
return normals
def lumoNormal(A_8U):
h, w = A_8U.shape
N0_32F = silhouetteNormal(A_8U)
A, b = normalConstraints(A_8U, N0_32F)
N_flat = solveMG(A, b)
N_flat = normalizeVectors(N_flat)
N_32F = N_flat.reshape(h, w, 3)
return N_32F
def computeTangents(points):
t1 = np.array(points, dtype=np.float)
t2 = np.array(points, dtype=np.float)
t1[1:] = points[1:] - points[:-1]
t2[:-1] = points[1:] - points[:-1]
t1[0] = t1[1]
t2[-1] = t2[-2]
t = t1
t = normalizeVectors(t)
t[:, 1] = - t[:, 1]
return t
def projectNormals(L, I, tangents_3D, normals):
normals_smooth = np.array(normals)
num_points = len(normals)
for i in range(num_points):
T = tangents_3D[i]
N = normals[i]
NdL = np.dot(N, L)
dN_L = (I - NdL) * L
NdT = np.dot(N, T)
dN_T = - NdT * T
normals_smooth[i] = N + dN_L + dN_T
normals_smooth = normalizeVectors(normals_smooth)
return normals_smooth
def estimatePhi(N_sil, I_sil):
num_bins = 16
I_ids = luminanceClusters(I_sil, num_bins)
N_centers = np.zeros((num_bins, 3))
hist = np.zeros((num_bins))
for ni, I_id in enumerate(I_ids):
N_centers[I_id] += N_sil[ni]
hist[I_id] += 1.0
hist_positive = hist > 0.0
N_centers[hist_positive] = normalizeVectors(N_centers[hist_positive])
I_id_max = np.max(np.where(hist_positive))
L = N_centers[I_id_max]
L[2] = 0.0
L = normalizeVector(L)
return L
def smoothing3DVectors(vectors_3D, parameters):
vectors_3D = smoothing(vectors_3D, parameters, smooth=0.01)
vectors_3D = normalizeVectors(vectors_3D)
return vectors_3D
def normalizeImage(N_32F):
N_flat = N_32F.reshape((-1, 3))
N_flat_normalized = normalizeVectors(N_flat)
N_32F_normalized = N_flat_normalized.reshape(N_32F.shape)
return N_32F_normalized
