def export_cut_objects(df_row,
path_out,
padding,
use_mask=True,
bg_color=None):
""" cut and expert objects in image according given segmentation
:param df_row:
:param str path_out: path for exporting image
:param int padding: set padding around segmented object
"""
annot, _ = tl_io.load_image_2d(df_row['path_1'])
img, name = tl_io.load_image_2d(df_row['path_2'])
assert annot.shape[:2] == img.shape[:2], \
'image sizes not match %s vs %s' % (repr(annot.shape), repr(img.shape))
uq_objects = np.unique(annot)
if len(uq_objects) == 1:
return
for idx in uq_objects[1:]:
img_new = cut_object(img, annot == idx, padding, use_mask, bg_color)
path_img = os.path.join(path_out, '%s_%i.png' % (name, idx))
logging.debug('saving image "%s"', path_img)
Image.fromarray(img_new).save(path_img)
def load_image(path_img, img_type=TYPES_LOAD_IMAGE[0]):
""" load image and annotation according chosen type
:param str path_img:
:param str img_type:
:return ndarray:
"""
path_img = tl_data.update_path(path_img)
assert os.path.isfile(path_img), 'missing "%s"' % path_img
if img_type == '2d_gray':
img, _ = tl_data.load_img_double_band_split(path_img)
assert img.ndim == 2, 'image dims: %s' % repr(img.shape)
# img = np.rollaxis(np.tile(img, (3, 1, 1)), 0, 3)
# if img.max() > 1:
# img = (img / 255.)
elif img_type == '2d_rgb':
img, _ = tl_data.load_image_2d(path_img)
# if img.max() > 1:
# img = (img / 255.)
elif img_type == 'segm':
img, _ = tl_data.load_image_2d(path_img)
if ANNOT_RELABEL_SEQUENCE:
img, _, _ = segmentation.relabel_sequential(img)
else:
logging.error('not supported loading img_type: %s', img_type)
img = None
return img
def load_inputs(name):
img, _ = tl_io.load_image_2d(os.path.join(PATH_IMAGE, name + '.jpg'))
seg, _ = tl_io.load_image_2d(os.path.join(PATH_SEGM, name + '.png'))
annot, _ = tl_io.load_image_2d(os.path.join(PATH_ANNOT, name + '.png'))
centers = pd.DataFrame.from_csv(os.path.join(PATH_CENTRE,
name + '.csv')).values
centers[:, [0, 1]] = centers[:, [1, 0]]
slic = seg_spx.segment_slic_img2d(img, sp_size=25, rltv_compact=0.3)
return img, seg, slic, centers, annot
def expert_visual(row, method_name, path_out, max_fig_size=10):
""" export several visualisation segmentation and annotation
:param {str: ...} row:
:param str method_name:
:param str path_out:
:param int max_fig_size:
:return:
"""
im_name = os.path.splitext(os.path.basename(row['path_image']))[0]
img, _ = tl_io.load_image_2d(row['path_image'])
# annot = tl_io.load_image(row['path_annot'])
egg_segm, _ = tl_io.load_image_2d(row['path_egg-segm'])
in_segm, _ = tl_io.load_image_2d(row['path_in-segm'])
centers = tl_io.load_landmarks_csv(row['path_centers'])
centers = np.array(tl_io.swap_coord_x_y(centers))
fig_size = max_fig_size * np.array(img.shape[:2]) / float(np.max(
img.shape))
fig_name = '%s_%s.jpg' % (im_name, method_name)
fig, ax = plt.subplots(figsize=fig_size[::-1])
ax.imshow(img[:, :, 0], cmap=plt.cm.gray)
ax.imshow(egg_segm, alpha=0.15)
ax.contour(egg_segm, levels=np.unique(egg_segm), linewidths=(3, ))
ax.plot(centers[:, 1], centers[:, 0], 'ob')
tl_visu.figure_image_adjustment(fig, img.shape)
path_fig = os.path.join(path_out, NAME_DIR_VISUAL_1, fig_name)
fig.savefig(path_fig, bbox_inches='tight', pad_inches=0)
plt.close(fig)
fig, ax = plt.subplots(figsize=fig_size[::-1])
# ax.imshow(np.max(in_segm) - in_segm, cmap=plt.cm.gray)
ax.imshow(LUT_COLOR[in_segm], vmin=0., vmax=1., alpha=0.5)
ax.contour(in_segm, levels=np.unique(in_segm), colors='k')
ax.imshow(egg_segm, alpha=0.3)
ax.contour(egg_segm, levels=np.unique(egg_segm), linewidths=(5, ))
ax.plot(centers[:, 1], centers[:, 0], 'or')
tl_visu.figure_image_adjustment(fig, img.shape)
path_fig = os.path.join(path_out, NAME_DIR_VISUAL_2, fig_name)
fig.savefig(path_fig, bbox_inches='tight', pad_inches=0)
plt.close(fig)
fig, ax = plt.subplots(figsize=fig_size[::-1])
ax.imshow(img[:, :, 0], cmap=plt.cm.gray, alpha=1.)
ax.contour(in_segm, levels=np.unique(in_segm), colors='w')
ax.imshow(egg_segm, alpha=0.3)
ax.contour(egg_segm, levels=np.unique(egg_segm), linewidths=(5, ))
ax.plot(centers[:, 1], centers[:, 0], 'og')
tl_visu.figure_image_adjustment(fig, img.shape)
path_fig = os.path.join(path_out, NAME_DIR_VISUAL_3, fig_name)
fig.savefig(path_fig, bbox_inches='tight', pad_inches=0)
plt.close(fig)
def test_ellipse_fitting(self,
name='insitu7545',
table_prob=TABLE_FB_PROBA):
""" """
img, _ = tl_io.load_image_2d(os.path.join(PATH_IMAGES, name + '.jpg'))
seg, _ = tl_io.load_image_2d(os.path.join(PATH_SEGM, name + '.png'))
annot, _ = tl_io.load_image_2d(os.path.join(PATH_ANNOT, name + '.png'))
path_center = os.path.join(PATH_CENTRE, name + '.csv')
centers = pd.DataFrame.from_csv(path_center).values[:, [1, 0]]
slic, points_all, labels = seg_fit.get_slic_points_labels(
seg, slic_size=20, slic_regul=0.3)
weights = np.bincount(slic.ravel())
points_centers = seg_fit.prepare_boundary_points_ray_edge(
seg, centers, close_points=5)
segm = np.zeros(seg.shape)
ellipses, crits = [], []
for i, points in enumerate(points_centers):
model, _ = seg_fit.ransac_segm(points,
seg_fit.EllipseModelSegm,
points_all,
weights,
labels,
table_prob,
min_samples=0.6,
residual_threshold=15,
max_trials=50)
if model is None: continue
ellipses.append(model.params)
crit = model.criterion(points_all, weights, labels, table_prob)
crits.append(np.round(crit))
logging.info('model params: %s', repr(model.params))
logging.info('-> crit: %f', crit)
c1, c2, h, w, phi = model.params
rr, cc = tl_visu.ellipse(int(c1), int(c2), int(h), int(w), phi,
segm.shape)
segm[rr, cc] = (i + 1)
if img.ndim == 3:
img = img[:, :, 0]
fig = tl_visu.figure_ellipse_fitting(img, seg, ellipses, centers,
crits)
fig_name = 'ellipse-fitting_%s.pdf' % name
fig.savefig(os.path.join(PATH_OUTPUT, fig_name),
bbox_inches='tight',
pad_inches=0)
score = adjusted_rand_score(annot.ravel(), segm.ravel())
self.assertGreaterEqual(score, 0.5)
def export_cut_objects(df_row, path_out, padding):
""" cut and expert objects in image according given segmentation
:param df_row:
:param str path_out: path for exporting image
:param int padding: set padding around segmented object
"""
annot, _ = tl_io.load_image_2d(df_row['path_1'])
img, name = tl_io.load_image_2d(df_row['path_2'])
uq_objects = np.unique(annot)
for i, idx in enumerate(uq_objects[1:]):
img_new = cut_object(img, annot == idx, padding)
path_img = os.path.join(path_out, '%s_%i.png' % (name, i + 1))
logging.debug('saving image "%s"', path_img)
Image.fromarray(img_new).save(path_img)
def export_visual(df_row, path_out, relabel=True):
""" given visualisation of segmented image and annotation
:param {str: ...} df_row:
:param str path_out: path to the visualisation directory
:param bool relabel: whether relabel segmentation as sequential
"""
annot, _ = tl_io.load_image_2d(df_row['path_1'])
segm, _ = tl_io.load_image_2d(df_row['path_2'])
img = None
if 'path_3' in df_row:
img, _ = tl_io.load_image_2d(df_row['path_3'])
if relabel:
annot = relabel_sequential(annot)[0]
segm = seg_lbs.relabel_max_overlap_unique(annot, segm)
fig = seg_visu.figure_overlap_annot_segm_image(annot, segm, img)
name = os.path.splitext(os.path.basename(df_row['path_1']))[0]
logging.debug('>> exporting -> %s', name)
fig.savefig(os.path.join(path_out, '%s.png' % name))
def test_shape_modeling(self, dir_annot=PATH_ANNOT):
""" """
list_paths = sorted(glob.glob(os.path.join(dir_annot, '*.png')))
logging.info('nb images: %i SAMPLES: %s', len(list_paths),
repr([os.path.basename(p) for p in list_paths[:5]]))
list_segms = []
for path_seg in list_paths:
seg, _ = tl_io.load_image_2d(path_seg)
list_segms.append(seg)
list_rays, _ = seg_rg.compute_object_shapes(list_segms,
ray_step=25,
smooth_coef=1,
interp_order='spline')
logging.info('nb eggs: %i nb rays: %i', len(list_rays),
len(list_rays[0]))
model, list_mean_cdf = seg_rg.transform_rays_model_sets_mean_cdf_mixture(
list_rays, 2)
np.savez(PATH_PKL_MODEL,
data={
'name': 'set_cdfs',
'cdfs': list_mean_cdf,
'mix_model': model
})
# with open(PATH_PKL_MODEL, 'w') as fp:
# pickle.dump({'name': 'set_cdfs',
# 'cdfs': list_mean_cdf,
# 'mix_model': model}, fp)
self.assertTrue(os.path.exists(PATH_PKL_MODEL))
max_len = max(
[np.asarray(l_cdf).shape[1] for _, l_cdf in list_mean_cdf])
fig, axarr = plt.subplots(nrows=len(list_mean_cdf),
ncols=2,
figsize=(12, 3.5 * len(list_mean_cdf)))
for i, (_, list_cdf) in enumerate(list_mean_cdf):
cdist = np.zeros((len(list_cdf), max_len))
cdist[:, :len(list_cdf[0])] = np.array(list_cdf)
axarr[i, 0].set_title('Inverse cumulative distribution')
axarr[i, 0].imshow(cdist, aspect='auto')
axarr[i, 0].set_xlim([0, max_len])
axarr[i, 0].set_ylabel('Ray steps')
axarr[i, 0].set_xlabel('Distance [px]')
axarr[i, 1].set_title('Reconstructions')
axarr[i, 1].imshow(compute_prior_map(cdist, step=10))
fig.savefig(os.path.join(PATH_OUTPUT, 'RG2Sp_shape-modeling.pdf'),
bbox_inches='tight',
pad_inches=0)
def compute_metrics(row):
""" load segmentation and compute similarity metrics
:param {str: ...} row:
:return {str: float}:
"""
logging.debug('loading annot "%s"\n and segm "%s"', row['path_annot'],
row['path_egg-segm'])
annot, _ = tl_io.load_image_2d(row['path_annot'])
segm, _ = tl_io.load_image_2d(row['path_egg-segm'])
assert annot.shape == segm.shape, 'dimension do mot match %s - %s' % \
(repr(annot.shape), repr(segm.shape))
list_jacob = []
segm = seg_lbs.relabel_max_overlap_unique(annot, segm, keep_bg=True)
for lb in np.unique(annot)[1:]:
annot_obj = (annot == lb)
segm_obj = (segm == lb)
# label_hist = seg_lb.histogram_regions_labels_counts(segm, annot_obj)
# segm_obj = np.argmax(label_hist, axis=1)[segm]
jacoby = np.sum(np.logical_and(annot_obj, segm_obj)) \
/ float(np.sum(np.logical_or(annot_obj, segm_obj)))
list_jacob.append(jacoby)
if len(list_jacob) == 0:
list_jacob.append(0)
# avg_weight = 'samples' if len(np.unique(annot)) > 2 else 'binary'
y_true, y_pred = annot.ravel(), segm.ravel()
dict_eval = {
'name': os.path.basename(row['path_annot']),
'ARS': metrics.adjusted_rand_score(y_true, y_pred),
'Jaccard': np.mean(list_jacob),
'f1': metrics.f1_score(y_true, y_pred, average='micro'),
'accuracy': metrics.accuracy_score(y_true, y_pred),
'precision': metrics.precision_score(y_true, y_pred, average='micro'),
'recall': metrics.recall_score(y_true, y_pred, average='micro'),
}
return dict_eval
def visualise_overlap(path_img,
path_seg,
path_out,
b_img_scale=BOOL_IMAGE_RESCALE_INTENSITY,
b_img_contour=BOOL_SAVE_IMAGE_CONTOUR,
b_relabel=BOOL_ANNOT_RELABEL):
img, _ = tl_io.load_image_2d(path_img)
seg, _ = tl_io.load_image_2d(path_seg)
if b_relabel:
seg, _, _ = segmentation.relabel_sequential(seg)
if img.ndim == 2: # for gray images of ovary
img = np.rollaxis(np.tile(img, (3, 1, 1)), 0, 3)
if b_img_scale:
p_low, p_high = np.percentile(img, (3, 98))
# plt.imshow(255 - img, cmap='Greys')
img = exposure.rescale_intensity(img,
in_range=(p_low, p_high),
out_range='uint8')
if b_img_contour:
path_im_visu = os.path.splitext(path_out)[0] + '_contour.png'
img_contour = segmentation.mark_boundaries(img[:, :, :3],
seg,
color=COLOR_CONTOUR,
mode='subpixel')
plt.imsave(path_im_visu, img_contour)
# else: # for colour images of disc
# mask = (np.sum(img, axis=2) == 0)
# img[mask] = [255, 255, 255]
fig = tl_visu.figure_image_segm_results(img, seg, SIZE_SUB_FIGURE)
fig.savefig(path_out)
plt.close(fig)
def test_region_growing_graphcut(self, name='insitu7545'):
""" """
if not os.path.exists(PATH_PKL_MODEL):
self.test_shape_modeling()
# file_model = pickle.load(open(PATH_PKL_MODEL, 'r'))
npz_file = np.load(PATH_PKL_MODEL)
file_model = dict(npz_file[npz_file.files[0]].tolist())
logging.info('loaded model: %s', repr(file_model.keys()))
list_mean_cdf = file_model['cdfs']
model = file_model['mix_model']
img, _ = tl_io.load_image_2d(os.path.join(PATH_IMAGE, name + '.jpg'))
seg, _ = tl_io.load_image_2d(os.path.join(PATH_SEGM, name + '.png'))
annot, _ = tl_io.load_image_2d(os.path.join(PATH_ANNOT, name + '.png'))
centers = pd.DataFrame.from_csv(
os.path.join(PATH_CENTRE, name + '.csv')).values
centers[:, [0, 1]] = centers[:, [1, 0]]
slic = seg_spx.segment_slic_img2d(img, sp_size=25, rltv_compact=0.3)
dict_debug = {}
labels_gc = seg_rg.region_growing_shape_slic_graphcut(
seg,
slic,
centers, (model, list_mean_cdf),
'set_cdfs',
LABELS_FG_PROB,
coef_shape=5.,
coef_pairwise=15.,
prob_label_trans=[0.1, 0.03],
optim_global=False,
nb_iter=65,
allow_obj_swap=False,
dict_thresholds=DEFAULT_RG2SP_THRESHOLDS,
dict_debug_history=dict_debug)
segm_obj = labels_gc[slic]
logging.info('debug: %s', repr(dict_debug.keys()))
for i in np.linspace(0, len(dict_debug['energy']) - 1, 5):
fig = tl_visu.figure_rg2sp_debug_complete(seg,
slic,
dict_debug,
int(i),
max_size=5)
fig_name = 'RG2Sp_graph-cut_%s_debug-%03d.pdf' % (name, i)
fig.savefig(os.path.join(PATH_OUTPUT, fig_name),
bbox_inches='tight',
pad_inches=0)
plt.close(fig)
score = adjusted_rand_score(annot.ravel(), segm_obj.ravel())
self.assertGreaterEqual(score, 0.5)
expert_segm(name,
img,
seg,
segm_obj,
annot,
str_type='RG2Sp_graph-cut')