def plot_matching_descriptors(desc1, desc2, desc1_id, desc2_id, plt):
"""
Plot a random set of matching descriptor patches
"""
num_inliers = desc1_id.size
num_ip, num_dims = desc1.shape
patch_size = int(np.sqrt(num_dims))
figsize0 = plt.rcParams['figure.figsize']
N1, N2 = 1, 8
plt.rcParams['figure.figsize'] = (16.0, N1 * 4.0)
for i in range(N1):
for j in range(N2):
rnd = np.random.randint(0, num_inliers)
desc1_rnd = desc1_id[rnd]
desc2_rnd = desc2_id[rnd]
desc1_im = np.reshape(desc1[desc1_rnd, :],
(patch_size, patch_size))
desc2_im = np.reshape(desc2[desc2_rnd, :],
(patch_size, patch_size))
ax = plt.subplot(2 * N1, N2, 2 * i * N2 + j + 1)
plt.imshow(im_util.grey_to_rgb(im_util.normalise_01(desc1_im)))
plt.axis('off')
ax = plt.subplot(2 * N1, N2, 2 * i * N2 + N2 + j + 1)
plt.imshow(im_util.grey_to_rgb(im_util.normalise_01(desc2_im)))
plt.axis('off')
plt.rcParams['figure.figsize'] = figsize0
def plot_descriptors(desc, plt):
"""
Plot a random set of descriptor patches
"""
num_ip, num_dims = desc.shape
patch_size = int(np.sqrt(num_dims))
N1, N2 = 2, 8
figsize0 = plt.rcParams['figure.figsize']
plt.rcParams['figure.figsize'] = (16.0, 4.0)
for i in range(N1):
for j in range(N2):
ax = plt.subplot(N1, N2, i * N2 + j + 1)
rnd = np.random.randint(0, num_ip)
desc_im = np.reshape(desc[rnd, :], (patch_size, patch_size))
plt.imshow(im_util.grey_to_rgb(im_util.normalise_01(desc_im)))
plt.axis('off')
plt.rcParams['figure.figsize'] = figsize0