def prediction(img_list, pctls, feat_list_new, data_path, batch, remove_perm):
for j, img in enumerate(img_list):
times = []
accuracy, precision, recall, f1 = [], [], [], []
preds_path = data_path / batch / 'predictions' / img
bin_file = preds_path / 'predictions.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(data_path, img, pctl, feat_list_new,
test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
if remove_perm:
data_vector_test[data_vector_test[:, perm_index] == 1, flood_index] = 0 # Remove flood water that is perm water
data_vector_test = np.delete(data_vector_test, perm_index, axis=1) # Remove GSW_perm column
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[1]-1], data_vector_test[:, data_shape[1]-1]
print('Predicting for {} at {}% cloud cover'.format(img, pctl))
start_time = time.time()
model_path = data_path / batch / 'models' / img / '{}'.format(img + '_clouds_' + str(pctl) + '.sav')
trained_model = joblib.load(model_path)
pred_probs = trained_model.predict_proba(X_test)
preds = np.argmax(pred_probs, axis=1)
try:
preds_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier mean predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=pred_probs)
times.append(timer(start_time, time.time(), False)) # Elapsed time for MC simulations
print('Evaluating predictions')
accuracy.append(accuracy_score(y_test, preds))
precision.append(precision_score(y_test, preds))
recall.append(recall_score(y_test, preds))
f1.append(f1_score(y_test, preds))
del preds, pred_probs, X_test, y_test, trained_model, data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(np.column_stack([pctls, accuracy, precision, recall, f1]),
columns=['cloud_cover', 'accuracy', 'precision', 'recall', 'f1'])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
times = [float(i) for i in times] # Convert time objects to float, otherwise valMetrics will be non-numeric
times_df = pd.DataFrame(np.column_stack([pctls, times]),
columns=['cloud_cover', 'testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
def training_bnn(img_list, pctls, feat_list_new, data_path, batch,
**model_params):
for j, img in enumerate(img_list):
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path,
img,
feat_list_new,
features=True,
overwrite=False)
cloud_generator(img, data_path, overwrite=False)
for i, pctl in enumerate(pctls):
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
tf.keras.backend.clear_session()
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_train[data_vector_train[:, perm_index] == 1,
flood_index] = 0
data_vector_train = np.delete(data_vector_train,
perm_index,
axis=1)
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] -
1], data_vector_train[:,
shape[1]
- 1]
y_train = to_categorical(y_train)
D = len(set(y_train[:, 0])) # Target classes
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
try:
metrics_path.mkdir(parents=True)
model_path.mkdir(parents=True)
except FileExistsError:
pass
model_path = model_path / '{}'.format(img + '_clouds_' +
str(pctl) + '.h5')
print('Training model')
start_time = time.time()
aleatoric_model = get_aleatoric_uncertainty_model(X_train,
y_train,
**model_params,
D=D)
end_time = time.time()
times.append(timer(start_time, end_time, False))
aleatoric_model.save(model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([pctls, times])
times_df = pd.DataFrame(times,
columns=['cloud_cover', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
def log_reg_training(img_list, pctls, feat_list_new, data_path, batch):
for j, img in enumerate(img_list):
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path,
img,
feat_list_new,
features=True,
overwrite=False)
cloud_generator(img, data_path, overwrite=False)
for i, pctl in enumerate(pctls):
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
# data_vector_train[data_vector_train[:, perm_index] == 1, flood_index] = 0
data_vector_train = np.delete(data_vector_train,
perm_index,
axis=1)
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] -
1], data_vector_train[:,
shape[1]
- 1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
if not model_path.exists():
model_path.mkdir(parents=True)
if not metrics_path.exists():
metrics_path.mkdir(parents=True)
model_path = model_path / '{}'.format(img + '_clouds_' +
str(pctl) + '.sav')
print('Training')
start_time = time.time()
logreg = LogisticRegression(n_jobs=-1, solver='sag')
logreg.fit(X_train, y_train)
end_time = time.time()
times.append(timer(start_time, end_time, False))
joblib.dump(logreg, model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([pctls, times])
times_df = pd.DataFrame(times,
columns=['cloud_cover', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
def prediction_with_uncertainty(img_list,
pctls,
feat_list_new,
data_path,
batch,
DROPOUT_RATE,
MC_PASSES,
remove_perm,
weight_decay=0.005,
length_scale=0.00001,
**model_params):
for j, img in enumerate(img_list):
times = []
accuracy, precision, recall, f1 = [], [], [], []
preds_path = data_path / batch / 'predictions' / img
vars_path = data_path / batch / 'variances' / img
mc_bin_file = preds_path / 'mc_preds.h5'
preds_bin_file = preds_path / 'predictions.h5'
vars_bin_file = vars_path / 'variances.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
try:
preds_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
try:
vars_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, gaps=True)
feat_list_keep = [feat_list_new[i] for i in feat_keep
] # Removed if feat was deleted in preprocessing
if remove_perm:
perm_index = feat_list_keep.index('GSW_perm')
flood_index = feat_list_keep.index('flooded')
data_vector_test[
data_vector_test[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_test = np.delete(data_vector_test, perm_index,
axis=1) # Remove GSW_perm column
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[
1] - 1], data_vector_test[:, data_shape[1] - 1]
# Initialize binary file to hold predictions
with h5py.File(mc_bin_file, 'w') as f:
f.create_dataset('mc_preds',
shape=(X_test.shape[0], 1),
maxshape=(X_test.shape[0], None),
chunks=True,
compression='gzip'
) # Create empty dataset with shape of data
start_time = time.time()
model_path = data_path / batch / 'models' / img / '{}'.format(
img + '_clouds_' + str(pctl) + '.h5')
trained_model = tf.keras.models.load_model(model_path)
for k in range(MC_PASSES):
if k % 10 == 0 or k == MC_PASSES - 1:
print('Running MC {}/{} for {} at {}% cloud cover'.format(
k, MC_PASSES, img, pctl))
flood_prob = trained_model.predict(
X_test,
batch_size=model_params['batch_size'],
use_multiprocessing=True) # Predict
flood_prob = flood_prob[:,
1] # Drop probability of not flooded (0) to save space
with h5py.File(mc_bin_file, 'a') as f:
f['mc_preds'][:,
-1] = flood_prob # Append preds to h5 file
if k < MC_PASSES - 1: # Resize to append next pass, if there is one
f['mc_preds'].resize((f['mc_preds'].shape[1] + 1),
axis=1)
tf.keras.backend.clear_session()
del flood_prob
# Calculate MC statistics
print('Calculating MC statistics for {} at {}% cloud cover'.format(
img, pctl))
with h5py.File(mc_bin_file, 'r') as f:
dset = f['mc_preds']
preds_da = da.from_array(
dset, chunks="250 MiB") # Open h5 file as dask array
means = preds_da.mean(axis=1)
means = means.compute()
variance = preds_da.var(axis=1)
variance = variance.compute()
tau = (length_scale**2 *
(1 - DROPOUT_RATE)) / (2 * data_shape[0] * weight_decay)
variance = variance + tau
preds = means.round()
del f, means, preds_da, dset
os.remove(mc_bin_file) # Delete predictions to save space on disk
print('Saving mean preds/vars for {} at {}% cloud cover'.format(
img, pctl))
with h5py.File(preds_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier mean predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=preds)
with h5py.File(vars_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier variances')
del f[str(pctl)]
f.create_dataset(str(pctl), data=variance)
times.append(timer(start_time, time.time(),
False)) # Elapsed time for MC simulations
print('Evaluating predictions for {} at {}% cloud cover'.format(
img, pctl))
accuracy.append(accuracy_score(y_test, preds))
precision.append(precision_score(y_test, preds))
recall.append(recall_score(y_test, preds))
f1.append(f1_score(y_test, preds))
del preds, X_test, y_test, trained_model, data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(
np.column_stack([pctls, accuracy, precision, recall, f1]),
columns=['cloud_cover', 'accuracy', 'precision', 'recall', 'f1'])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
times = [
float(i) for i in times
] # Convert time objects to float, otherwise valMetrics will be non-numeric
times_df = pd.DataFrame(np.column_stack([pctls, times]),
columns=['cloud_cover', 'testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
def uncertainty_map_LR(self):
data_path = self.data_path
plt.ioff()
my_dpi = 300
# Get predictions and variances
for img in self.img_list:
print('Creating uncertainty map for {}'.format(img))
plot_path = data_path / self.batch / 'plots' / img
se_lower_bin_file = data_path / self.batch / 'uncertainties' / img / 'se_lower.h5'
se_upper_bin_file = data_path / self.batch / 'uncertainties' / img / 'se_upper.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
try:
plot_path.mkdir(parents=True)
except FileExistsError:
pass
# Reshape variance values back into image band
with rasterio.open(stack_path, 'r') as ds:
shape = ds.read(1).shape # Shape of full original image
for pctl in self.pctls:
with h5py.File(se_lower_bin_file, 'r') as f:
lower = f[str(pctl)]
lower = np.array(lower) # Copy h5 dataset to array
with h5py.File(se_upper_bin_file, 'r') as f:
upper = f[str(pctl)]
upper = np.array(upper) # Copy h5 dataset to array
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, self.feat_list_all, test=True)
uncertainties = upper - lower
perm_index = feat_keep.index('GSWPerm')
perm = data_test[:, :, perm_index]
unc_image = np.zeros(shape)
unc_image[:] = np.nan
rows, cols = zip(data_ind_test)
unc_image[rows, cols] = uncertainties
unc_image[perm == 1] = 0
cutoff_value = np.nanpercentile(
unc_image,
99.99) # Truncate values so outliers don't skew colorbar
unc_image[unc_image > cutoff_value] = np.round(cutoff_value, 0)
fig, ax = plt.subplots()
im = ax.imshow(unc_image, cmap='magma')
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
im_ratio = unc_image.shape[0] / unc_image.shape[1]
cbar = fig.colorbar(im,
ax=ax,
fraction=0.02 * im_ratio,
pad=0.02 * im_ratio)
# cbar_labels = [label.get_text() for label in cbar.ax.get_yticklabels()] # Add + to cbar max value
# cbar_labels[-1] = cbar_labels[-1] + '+'
# cbar.ax.set_yticklabels(cbar_labels)
plt.tight_layout()
plt.savefig(
plot_path /
'{}'.format('map_uncertainty_' + str(pctl) + '.png'),
dpi=my_dpi,
pad_inches=0.0)
plt.close('all')
def training2(img_list,
pctls,
model_func,
feat_list_new,
data_path,
batch,
DROPOUT_RATE=0,
HOLDOUT=0.3,
**model_params):
'''
Removes flood water that is permanent water
'''
get_model = model_func
for j, img in enumerate(img_list):
times = []
tif_stacker(data_path,
img,
feat_list_new,
features=True,
overwrite=True)
cloud_generator(img, data_path, overwrite=False)
for i, pctl in enumerate(pctls):
data_train, data_vector_train, data_ind_train = preprocessing(
data_path, img, pctl, gaps=False)
perm_index = feat_list_new.index('GSW_perm')
flood_index = feat_list_new.index('flooded')
data_vector_train[
data_vector_train[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_train = np.delete(data_vector_train,
perm_index,
axis=1) # Remove perm water column
training_data, validation_data = train_val(data_vector_train,
holdout=HOLDOUT)
X_train, y_train = training_data[:, 0:14], training_data[:, 14]
X_val, y_val = validation_data[:, 0:14], validation_data[:, 14]
INPUT_DIMS = X_train.shape[1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
try:
metrics_path.mkdir(parents=True)
model_path.mkdir(parents=True)
except FileExistsError:
pass
model_path = model_path / '{}'.format(img + '_clouds_' +
str(pctl) + '.h5')
csv_logger = CSVLogger(metrics_path / 'training_log.log')
model_params['callbacks'].append(csv_logger)
print('~~~~~', img, pctl, '% CLOUD COVER')
model = get_model(INPUT_DIMS)
start_time = time.time()
model.fit(X_train,
y_train,
**model_params,
validation_data=(X_val, y_val))
end_time = time.time()
times.append(timer(start_time, end_time, False))
model.save(model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([pctls, times])
times_df = pd.DataFrame(times,
columns=['cloud_cover', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
def prediction_gen_model(img_list, pctls, feat_list_new, data_path, batch,
**model_params):
model_path = data_path / batch / 'models' / 'gen_model.h5'
for j, img in enumerate(img_list):
times = []
accuracy, precision, recall, f1 = [], [], [], []
preds_path = data_path / batch / 'predictions' / img
bin_file = preds_path / 'predictions.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
pretrained_model = tf.keras.models.load_model(model_path)
for i in range(6):
pretrained_model.layers[i].trainable = False
pretrained_model.layers[6].trainable = True
ll = pretrained_model.layers[6].output
ll = tf.keras.layers.Dense(6)(ll)
ll = tf.keras.layers.Dense(6)(ll)
new_model = Model(pretrained_model.input, outputs=ll)
print('Training')
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
gsw_index = feat_keep.index('GSW_maxExtent')
data_vector_train = np.delete(data_vector_train,
perm_index,
axis=1) # Remove GSW_perm column
data_vector_train = np.delete(data_vector_train, gsw_index, axis=1)
data_shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:data_shape[
1] - 1], data_vector_train[:, data_shape[1] - 1]
trained_model = new_model.fit(X_train, y_train)
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
gsw_index = feat_list_new.index('GSW_maxExtent')
data_vector_test[
data_vector_test[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_test = np.delete(data_vector_test, perm_index,
axis=1) # Remove GSW_perm column
data_vector_test = np.delete(data_vector_test, gsw_index, axis=1)
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[
1] - 1], data_vector_test[:, data_shape[1] - 1]
print('Predicting for {} at {}% cloud cover'.format(img, pctl))
start_time = time.time()
preds = trained_model.predict(
X_test,
batch_size=model_params['batch_size'],
use_multiprocessing=True)
preds = np.argmax(preds, axis=1) # Display most probable value
try:
preds_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier mean predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=preds)
times.append(timer(start_time, time.time(),
False)) # Elapsed time for MC simulations
print('Evaluating predictions')
accuracy.append(accuracy_score(y_test, preds))
precision.append(precision_score(y_test, preds))
recall.append(recall_score(y_test, preds))
f1.append(f1_score(y_test, preds))
del preds, X_test, y_test, data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(
np.column_stack([pctls, accuracy, precision, recall, f1]),
columns=['cloud_cover', 'accuracy', 'precision', 'recall', 'f1'])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
times = [
float(i) for i in times
] # Convert time objects to float, otherwise valMetrics will be non-numeric
times_df = pd.DataFrame(np.column_stack([pctls, times]),
columns=['cloud_cover', 'testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
def training6(img_list,
pctls,
model_func,
feat_list_new,
data_path,
batch,
T,
dropout_rate=0.2,
**model_params):
'''
1. Removes ALL pixels that are over permanent water
2. Finds the optimum learning rate and uses cyclic LR scheduler
to train the model
3. No validation set for training
4.
'''
get_model = model_func
for j, img in enumerate(img_list):
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path,
img,
feat_list_new,
features=True,
overwrite=False)
cloud_generator(img, data_path, overwrite=False)
for i, pctl in enumerate(pctls):
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
tf.keras.backend.clear_session()
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, gaps=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_train[
data_vector_train[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_train = np.delete(data_vector_train,
perm_index,
axis=1) # Remove perm water column
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] -
1], data_vector_train[:,
shape[1]
- 1]
y_train = to_categorical(y_train)
INPUT_DIMS = X_train.shape[1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
try:
metrics_path.mkdir(parents=True)
model_path.mkdir(parents=True)
except FileExistsError:
pass
model_path = model_path / '{}'.format(img + '_clouds_' +
str(pctl) + '.h5')
callbacks = [
tf.keras.callbacks.EarlyStopping(
monitor='softmax_output_categorical_accuracy',
min_delta=0.005,
patience=5),
tf.keras.callbacks.ModelCheckpoint(filepath=str(model_path),
monitor='loss',
save_best_only=True),
CSVLogger(metrics_path / 'training_log.log')
]
start_time = time.time()
model = get_model(model_params['epochs'],
X_train,
y_train,
X_train.shape,
T,
D=2,
batch_size=model_params['batch_size'],
dropout_rate=dropout_rate,
callbacks=callbacks)
end_time = time.time()
times.append(timer(start_time, end_time, False))
# model.save(model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([pctls, times])
times_df = pd.DataFrame(times,
columns=['cloud_cover', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
def false_map(self):
"""
Creates map of FP/FNs overlaid on RGB image
"""
plt.ioff()
data_path = self.data_path
for i, img in enumerate(self.img_list):
print('Creating FN/FP map for {}'.format(img))
plot_path = data_path / self.batch / 'plots' / img
bin_file = data_path / self.batch / 'predictions' / img / 'predictions.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
# Get RGB image
print('Stacking RGB image')
band_list = ['B1', 'B2', 'B3', 'B4', 'B5', 'B6', 'B7']
tif_stacker(data_path,
img,
band_list,
features=False,
overwrite=False)
spectra_stack_path = data_path / 'images' / img / 'stack' / 'spectra_stack.tif'
# Function to normalize the grid values
def normalize(array):
"""Normalizes numpy arrays into scale 0.0 - 1.0"""
array_min, array_max = np.nanmin(array), np.nanmax(array)
return ((array - array_min) / (array_max - array_min))
print('Processing RGB image')
with rasterio.open(spectra_stack_path, 'r') as f:
red, green, blue = f.read(4), f.read(3), f.read(2)
red[red == -999999] = np.nan
green[green == -999999] = np.nan
blue[blue == -999999] = np.nan
redn = normalize(red)
greenn = normalize(green)
bluen = normalize(blue)
rgb = np.dstack((redn, greenn, bluen))
# Convert to PIL image, enhance, and save
rgb_img = Image.fromarray((rgb * 255).astype(np.uint8()))
rgb_img = ImageEnhance.Contrast(rgb_img).enhance(1.5)
rgb_img = ImageEnhance.Sharpness(rgb_img).enhance(2)
rgb_img = ImageEnhance.Brightness(rgb_img).enhance(2)
print('Saving RGB image')
rgb_file = plot_path / '{}'.format('rgb_img' + '.png')
rgb_img.save(rgb_file, dpi=(300, 300))
# Reshape predicted values back into image band
with rasterio.open(stack_path, 'r') as ds:
shape = ds.read(1).shape # Shape of full original image
for pctl in self.pctls:
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, self.feat_list_new, test=True)
for buffer_iter in self.buffer_iters:
print('Fetching flood predictions for buffer', buffer_iter,
'at',
str(pctl) + '{}'.format('%'))
# Read predictions
with h5py.File(bin_file, 'r') as f:
pred_name = str(pctl) + '_buff_' + str(buffer_iter)
predictions = f[pred_name]
predictions = np.array(
predictions) # Copy h5 dataset to array
# Add predicted values to cloud-covered pixel positions
prediction_img = np.zeros(shape)
prediction_img[:] = np.nan
rows, cols = zip(data_ind_test)
prediction_img[rows, cols] = predictions
# Remove perm water from predictions and actual
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_test[
data_vector_test[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_shape = data_vector_test.shape
with rasterio.open(stack_path, 'r') as ds:
perm_feat = ds.read(perm_index + 1)
prediction_img[perm_feat == 1] = 0
# Add actual flood values to cloud-covered pixel positions
flooded_img = np.zeros(shape)
flooded_img[:] = np.nan
flooded_img[rows,
cols] = data_vector_test[:, data_shape[1] - 1]
# Visualizing FNs/FPs
ones = np.ones(shape=shape)
red_actual = np.where(ones, flooded_img, 0.5) # Actual
blue_preds = np.where(ones, prediction_img,
0.5) # Predictions
green_combo = np.minimum(red_actual, blue_preds)
# Saving FN/FP comparison image
comparison_img = np.dstack(
(red_actual, green_combo, blue_preds))
comparison_img_file = plot_path / '{}'.format(
'false_map' + str(pctl) + '_buff_' + str(buffer_iter) +
'.png')
print('Saving FN/FP image for buffer', str(buffer_iter),
'at',
str(pctl) + '{}'.format('%'))
matplotlib.image.imsave(comparison_img_file,
comparison_img,
dpi=300)
# Load comparison image
flood_overlay = Image.open(comparison_img_file)
# Convert black pixels to transparent in comparison image so it can overlay RGB
datas = flood_overlay.getdata()
newData = []
for item in datas:
if item[0] == 0 and item[1] == 0 and item[2] == 0:
newData.append((255, 255, 255, 0))
else:
newData.append(item)
flood_overlay.putdata(newData)
# Superimpose comparison image and RGB image, then save and close
rgb_img.paste(flood_overlay, (0, 0), flood_overlay)
plt.imshow(rgb_img)
print('Saving overlay image for buffer', str(buffer_iter),
'at',
str(pctl) + '{}'.format('%'))
rgb_img.save(
plot_path /
'{}'.format('false_map_overlay' + str(pctl) +
'_buff_' + str(buffer_iter) + '.png'),
dpi=(300, 300))
plt.close('all')
def false_map(self, probs, save=True):
"""
Creates map of FP/FNs overlaid on RGB image
save : bool
If true, saves RGB FP/FN overlay image. If false, just saves FP/FN overlay
"""
plt.ioff()
data_path = self.data_path
for i, img in enumerate(self.img_list):
print('Creating false map for {}'.format(img))
plot_path = data_path / self.batch / 'plots' / img
band_combo_dir = data_path / 'band_combos'
bin_file = data_path / self.batch / 'predictions' / img / 'predictions.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
try:
plot_path.mkdir(parents=True)
except FileExistsError:
pass
# Reshape predicted values back into image band
# with rasterio.open(stack_path, 'r') as ds:
# shape = ds.read(1).shape # Shape of full original image
# Get RGB image
rgb_file = band_combo_dir / '{}'.format(img + '_rgb_img' + '.png')
rgb_img = Image.open(rgb_file)
for j, pctl in enumerate(self.pctls):
print('Fetching flood predictions for',
str(pctl) + '{}'.format('%'))
# Read predictions
with h5py.File(bin_file, 'r') as f:
if probs:
prediction_probs = f[str(pctl)]
prediction_probs = np.array(
prediction_probs) # Copy h5 dataset to array
predictions = np.argmax(prediction_probs, axis=1)
else:
predictions = f[str(pctl)]
predictions = np.array(
predictions) # Copy h5 dataset to array
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, self.feat_list_all, test=True)
shape = data_test.shape[:2]
# Add predicted values to cloud-covered pixel positions
prediction_img = np.zeros(shape)
prediction_img[:] = np.nan
rows, cols = zip(data_ind_test)
prediction_img[rows, cols] = predictions
# Remove perm water from predictions and actual
perm_index = feat_keep.index('GSWPerm')
flood_index = feat_keep.index('flooded')
data_vector_test[data_vector_test[:, perm_index] == 1,
flood_index] = 0
data_shape = data_vector_test.shape
perm_feat = data_test[:, :, perm_index]
prediction_img[((prediction_img == 1) & (perm_feat == 1))] = 0
# Add actual flood values to cloud-covered pixel positions
flooded_img = np.zeros(shape)
flooded_img[:] = np.nan
flooded_img[rows, cols] = data_vector_test[:,
data_shape[1] - 1]
# Visualizing FNs/FPs
ones = np.ones(shape=shape)
red_actual = np.where(ones, flooded_img, 0.5) # Actual
blue_preds = np.where(ones, prediction_img, 0.5) # Predictions
green_combo = np.minimum(red_actual, blue_preds)
alphas = np.ones(shape)
# Convert black pixels to transparent in fpfn image so it can overlay RGB
fpfn_img = np.dstack(
(red_actual, green_combo, blue_preds, alphas)) * 255
fpfn_overlay_file = plot_path / '{}'.format('false_map' +
str(pctl) + '.png')
indices = np.where((np.isnan(fpfn_img[:, :, 0]))
& np.isnan(fpfn_img[:, :, 1])
& np.isnan(fpfn_img[:, :, 2])
& (fpfn_img[:, :, 3] == 255))
fpfn_img[indices] = [255, 255, 255, 0]
fpfn_overlay = Image.fromarray(np.uint8(fpfn_img), mode='RGBA')
fpfn_overlay.save(fpfn_overlay_file, dpi=(300, 300))
# Superimpose comparison image and RGB image, then save and close
if save:
rgb_img.paste(fpfn_overlay, (0, 0), fpfn_overlay)
print('Saving overlay image for',
str(pctl) + '{}'.format('%'))
rgb_img.save(
plot_path /
'{}'.format('false_map_overlay' + str(pctl) + '.png'),
dpi=(300, 300))
plt.close('all')
def log_reg_gen_prediction(img_list, pctls, feat_list_new, data_path, batch):
for j, img in enumerate(img_list):
times = []
accuracy, precision, recall, f1, roc_auc = [], [], [], [], []
preds_path = data_path / batch / 'predictions' / img
bin_file = preds_path / 'predictions.h5'
uncertainties_path = data_path / batch / 'uncertainties' / img
se_lower_bin_file = uncertainties_path / 'se_lower.h5'
se_upper_bin_file = uncertainties_path / 'se_upper.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_test[data_vector_test[:, perm_index] == 1,
flood_index] = 0
data_vector_test = np.delete(data_vector_test, perm_index,
axis=1) # Remove GSW_perm column
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[
1] - 1], data_vector_test[:, data_shape[1] - 1]
print('Predicting for {} at {}% cloud cover'.format(img, pctl))
start_time = time.time()
model_path = data_path / batch / 'models' / 'gen_model.sav'
trained_model = joblib.load(model_path)
pred_probs = trained_model.predict_proba(X_test)
preds = np.argmax(pred_probs, axis=1)
try:
preds_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier mean predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=pred_probs)
# Computer standard errors
SE_est = get_se(X_test, y_test, trained_model)
probs, upper, lower = get_probs(
trained_model, X_test, SE_est,
z=1.96) # probs is redundant, predicted above
try:
uncertainties_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(se_lower_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier lower SEs')
del f[str(pctl)]
f.create_dataset(str(pctl), data=lower)
with h5py.File(se_upper_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier upper SEs')
del f[str(pctl)]
f.create_dataset(str(pctl), data=upper)
times.append(timer(start_time, time.time(), False))
print('Evaluating predictions')
perm_mask = data_test[:, :, perm_index]
perm_mask = perm_mask.reshape(
[perm_mask.shape[0] * perm_mask.shape[1]])
perm_mask = perm_mask[~np.isnan(perm_mask)]
preds[perm_mask.astype('bool')] = 0
y_test[perm_mask.astype('bool')] = 0
accuracy.append(accuracy_score(y_test, preds))
precision.append(precision_score(y_test, preds))
recall.append(recall_score(y_test, preds))
f1.append(f1_score(y_test, preds))
roc_auc.append(roc_auc_score(y_test, pred_probs[:, 1]))
del preds, probs, pred_probs, upper, lower, X_test, y_test, \
trained_model, data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(
np.column_stack([pctls, accuracy, precision, recall, f1, roc_auc]),
columns=[
'cloud_cover', 'accuracy', 'precision', 'recall', 'f1', 'auc'
])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
times = [
float(i) for i in times
] # Convert time objects to float, otherwise valMetrics will be non-numeric
times_df = pd.DataFrame(np.column_stack([pctls, times]),
columns=['cloud_cover', 'testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
# ======================================================================================================================
img = img_list[0]
pctl = 30
batch = 'test'
import statsmodels.api as sm
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path, img, feat_list_new, features=True, overwrite=False)
cloud_generator(img, data_path, overwrite=False)
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
tf.keras.backend.clear_session()
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_train[data_vector_train[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_train = np.delete(data_vector_train, perm_index,
axis=1) # Remove perm water column
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] -
1], data_vector_train[:, shape[1] - 1]
# # Logistic regression using sklearn
# model_path = data_path / batch / 'models' / img
# if not model_path.exists():
# model_path.mkdir(parents=True)
# model_path = model_path / '{}'.format(img + '_sklearn.sav')
def NN_prediction(img_list, pctls, feat_list_all, data_path, batch,
**model_params):
for j, img in enumerate(img_list):
times = []
accuracy, precision, recall, f1, roc_auc = [], [], [], [], []
preds_path = data_path / batch / 'predictions' / img
bin_file = preds_path / 'predictions.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, feat_list_all, test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_test[
data_vector_test[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_test = np.delete(data_vector_test, perm_index,
axis=1) # Remove GSW_perm column
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[
1] - 1], data_vector_test[:, data_shape[1] - 1]
print('Predicting for {} at {}% cloud cover'.format(img, pctl))
start_time = time.time()
model_path = data_path / batch / 'models' / img / '{}'.format(
img + '_clouds_' + str(pctl) + '.h5')
trained_model = load_macro_soft_f1_model(model_path)
pred_probs = trained_model.predict(
X_test,
batch_size=model_params['batch_size'],
use_multiprocessing=True)
preds = np.argmax(pred_probs,
axis=1) # Display most probable value
try:
preds_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier mean predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=preds)
times.append(timer(start_time, time.time(),
False)) # Elapsed time for MC simulations
print('Evaluating predictions')
perm_mask = data_test[:, :, perm_index]
perm_mask = perm_mask.reshape(
[perm_mask.shape[0] * perm_mask.shape[1]])
perm_mask = perm_mask[~np.isnan(perm_mask)]
preds[perm_mask.astype('bool')] = 0
y_test[perm_mask.astype('bool')] = 0
accuracy.append(accuracy_score(y_test, preds))
precision.append(precision_score(y_test, preds))
recall.append(recall_score(y_test, preds))
f1.append(f1_score(y_test, preds))
roc_auc.append(roc_auc_score(y_test, pred_probs[:, 1]))
del preds, pred_probs, X_test, y_test, trained_model, data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(
np.column_stack([pctls, accuracy, precision, recall, f1, roc_auc]),
columns=[
'cloud_cover', 'accuracy', 'precision', 'recall', 'f1', 'auc'
])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
times = [
float(i) for i in times
] # Convert time objects to float, otherwise valMetrics will be non-numeric
times_df = pd.DataFrame(np.column_stack([pctls, times]),
columns=['cloud_cover', 'testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
def stack_all_uncertainties(model, batch, data_path, img_list, feat_list_all):
uncertainty_all = []
predictions_all = []
tp_all = []
tn_all = []
fp_all = []
fn_all = []
if model is 'BNN':
aleatoric_all = []
epistemic_all = []
plot_path = data_path / batch / 'plots'
output_bin_file = data_path / batch / 'metrics' / 'uncertainty_fpfn.h5'
for i, img in enumerate(img_list):
print(img)
preds_bin_file = data_path / batch / 'predictions' / img / 'predictions.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
try:
plot_path.mkdir(parents=True)
except FileExistsError:
pass
# Reshape variance values back into image band
with rasterio.open(stack_path, 'r') as ds:
shape = ds.read(1).shape # Shape of full original image
for pctl in pctls:
print(pctl)
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, feat_list_all, test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
floods = data_test[:, :, flood_index]
perm = data_test[:, :, perm_index]
if model is 'LR':
se_lower_bin_file = data_path / batch / 'uncertainties' / img / 'se_lower.h5'
se_upper_bin_file = data_path / batch / 'uncertainties' / img / 'se_upper.h5'
with h5py.File(se_lower_bin_file, 'r') as f:
lower = f[str(pctl)]
lower = np.array(lower)
with h5py.File(se_upper_bin_file, 'r') as f:
upper = f[str(pctl)]
upper = np.array(upper)
uncertainties = upper - lower
if model is 'BNN':
aleatoric_bin_file = data_path / batch / 'uncertainties' / img / 'aleatoric_uncertainties.h5'
epistemic_bin_file = data_path / batch / 'uncertainties' / img / 'epistemic_uncertainties.h5'
with h5py.File(aleatoric_bin_file, 'r') as f:
aleatoric = f[str(pctl)]
aleatoric = np.array(aleatoric)
with h5py.File(epistemic_bin_file, 'r') as f:
epistemic = f[str(pctl)]
epistemic = np.array(epistemic)
aleatoric_image = np.zeros(shape)
aleatoric_image[:] = np.nan
rows, cols = zip(data_ind_test)
aleatoric_image[rows, cols] = aleatoric
epistemic_image = np.zeros(shape)
epistemic_image[:] = np.nan
rows, cols = zip(data_ind_test)
epistemic_image[rows, cols] = epistemic
uncertainties = aleatoric + epistemic
unc_image = np.zeros(shape)
unc_image[:] = np.nan
rows, cols = zip(data_ind_test)
unc_image[rows, cols] = uncertainties
# unc_image[perm == 1] = 0
# cutoff_value = np.nanpercentile(unc_image, 99.99) # Truncate values so outliers don't skew colorbar
# unc_image[unc_image > cutoff_value] = np.round(cutoff_value, 0)
with h5py.File(preds_bin_file, 'r') as f:
predictions = f[str(pctl)]
if model is 'LR':
predictions = np.argmax(np.array(predictions),
axis=1) # Copy h5 dataset to array
if model is 'BNN':
predictions = np.array(predictions)
prediction_img = np.zeros(shape)
prediction_img[:] = np.nan
rows, cols = zip(data_ind_test)
prediction_img[rows, cols] = predictions
floods = floods.reshape([
floods.shape[0] * floods.shape[1],
])
predictions_mask = prediction_img.reshape([
prediction_img.shape[0] * prediction_img.shape[1],
])
tp = np.logical_and(predictions_mask == 1,
floods == 1).astype('int')
tn = np.logical_and(predictions_mask == 0,
floods == 0).astype('int')
fp = np.logical_and(predictions_mask == 1,
floods == 0).astype('int')
fn = np.logical_and(predictions_mask == 0,
floods == 1).astype('int')
# Mask out clouds, etc.
tp = tp[~np.isnan(predictions_mask)]
tn = tn[~np.isnan(predictions_mask)]
fp = fp[~np.isnan(predictions_mask)]
fn = fn[~np.isnan(predictions_mask)]
unc_image_mask = unc_image.reshape([
unc_image.shape[0] * unc_image.shape[1],
])
unc_image_mask = unc_image_mask[~np.isnan(predictions_mask)]
if model is 'BNN':
aleatoric_image_mask = aleatoric_image.reshape([
aleatoric_image.shape[0] * aleatoric_image.shape[1],
])
aleatoric_image_mask = aleatoric_image_mask[
~np.isnan(predictions_mask)]
epistemic_image_mask = epistemic_image.reshape([
epistemic_image.shape[0] * epistemic_image.shape[1],
])
epistemic_image_mask = epistemic_image_mask[
~np.isnan(predictions_mask)]
aleatoric_all.append(aleatoric_image_mask)
epistemic_all.append(epistemic_image_mask)
predictions_all.append(predictions)
uncertainty_all.append(unc_image_mask)
tp_all.append(tp)
tn_all.append(tn)
fp_all.append(fp)
fn_all.append(fn)
# data_vector_all = np.concatenate(data_vector_all, axis=0) # Won't work because some features are missing
predictions_all = np.concatenate(predictions_all, axis=0)
uncertainty_all = np.concatenate(uncertainty_all, axis=0)
tp_all = np.concatenate(tp_all, axis=0)
tn_all = np.concatenate(tn_all, axis=0)
fp_all = np.concatenate(fp_all, axis=0)
fn_all = np.concatenate(fn_all, axis=0)
if model is 'BNN':
aleatoric_all = np.concatenate(aleatoric_all, axis=0)
epistemic_all = np.concatenate(epistemic_all, axis=0)
# df = np.column_stack((data_vector_all, predictions_all, uncertainty_all, tp_all, tn_all, fp_all, fn_all))
if model is 'LR':
df = np.column_stack(
(predictions_all, uncertainty_all, tp_all, tn_all, fp_all, fn_all))
if model is 'BNN':
df = np.column_stack((predictions_all, uncertainty_all, aleatoric_all,
epistemic_all, tp_all, tn_all, fp_all, fn_all))
with h5py.File(output_bin_file, 'a') as f:
if 'uncertainty_fpfn' in f:
print('Deleting earlier uncertainty/fpfn')
del f['uncertainty_fpfn']
f.create_dataset('uncertainty_fpfn', data=df)
def false_map(probs, data_path, save=True):
"""
Creates map of FP/FNs overlaid on RGB image
save : bool
If true, saves RGB FP/FN overlay image. If false, just saves FP/FN overlay
"""
plt.ioff()
for i, img in enumerate(img_list):
print('Creating FN/FP map for {}'.format(img))
plot_path = data_path / batch / 'plots' / img
bin_file = data_path / batch / 'predictions' / img / 'predictions.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
# Get RGB image
print('Stacking RGB image')
band_list = ['B1', 'B2', 'B3', 'B4', 'B5', 'B6', 'B7']
tif_stacker(data_path, img, band_list, features=False, overwrite=False)
spectra_stack_path = data_path / 'images' / img / 'stack' / 'spectra_stack.tif'
# Function to normalize the grid values
def normalize(array):
"""Normalizes numpy arrays into scale 0.0 - 1.0"""
array_min, array_max = np.nanmin(array), np.nanmax(array)
return ((array - array_min) / (array_max - array_min))
print('Processing RGB image')
with rasterio.open(spectra_stack_path, 'r') as f:
red, green, blue = f.read(4), f.read(3), f.read(2)
red[red == -999999] = np.nan
green[green == -999999] = np.nan
blue[blue == -999999] = np.nan
redn = normalize(red)
greenn = normalize(green)
bluen = normalize(blue)
rgb = np.dstack((redn, greenn, bluen))
# Convert to PIL image, enhance, and save
rgb_img = Image.fromarray((rgb * 255).astype(np.uint8()))
rgb_img = ImageEnhance.Contrast(rgb_img).enhance(1.5)
rgb_img = ImageEnhance.Sharpness(rgb_img).enhance(2)
rgb_img = ImageEnhance.Brightness(rgb_img).enhance(2)
print('Saving RGB image')
rgb_file = plot_path / '{}'.format('rgb_img' + '.png')
rgb_img.save(rgb_file, dpi=(300, 300))
# Reshape predicted values back into image band
with rasterio.open(stack_path, 'r') as ds:
shape = ds.read(1).shape # Shape of full original image
for j, pctl in enumerate(pctls):
print('Fetching flood predictions for',
str(pctl) + '{}'.format('%'))
# Read predictions
with h5py.File(bin_file, 'r') as f:
if probs:
prediction_probs = f[str(pctl)]
prediction_probs = np.array(
prediction_probs) # Copy h5 dataset to array
predictions = np.argmax(prediction_probs, axis=1)
else:
predictions = f[str(pctl)]
predictions = np.array(
predictions) # Copy h5 dataset to array
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=True)
# Add predicted values to cloud-covered pixel positions
prediction_img = np.zeros(shape)
prediction_img[:] = np.nan
rows, cols = zip(data_ind_test)
prediction_img[rows, cols] = predictions
# Remove perm water from predictions and actual
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_test[
data_vector_test[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_shape = data_vector_test.shape
with rasterio.open(stack_path, 'r') as ds:
perm_feat = ds.read(perm_index + 1)
prediction_img[perm_feat == 1] = 0
# Add actual flood values to cloud-covered pixel positions
flooded_img = np.zeros(shape)
flooded_img[:] = np.nan
flooded_img[rows, cols] = data_vector_test[:, data_shape[1] - 1]
# Visualizing FNs/FPs
ones = np.ones(shape=shape)
red_actual = np.where(ones, flooded_img, 0.5) # Actual
blue_preds = np.where(ones, prediction_img, 0.5) # Predictions
green_combo = np.minimum(red_actual, blue_preds)
alphas = np.ones(shape) * 255
# Convert black pixels to transparent in fpfn image so it can overlay RGB
fpfn_img = np.dstack((red_actual, green_combo, blue_preds, alphas))
fpfn_overlay_file = plot_path / '{}'.format('false_map' +
str(pctl) + '.png')
indices = np.where((fpfn_img[:, :, 0] == 0)
& (fpfn_img[:, :, 1] == 0)
& (fpfn_img[:, :, 2] == 0)
& (fpfn_img[:, :, 3] == 255))
fpfn_img[indices] = 0
fpfn_overlay = Image.fromarray(fpfn_img, mode='RGBA')
fpfn_overlay.save(fpfn_overlay_file, dpi=(300, 300))
# Superimpose comparison image and RGB image, then save and close
if save:
rgb_img.paste(fpfn_overlay, (0, 0), fpfn_overlay)
print('Saving overlay image for', str(pctl) + '{}'.format('%'))
rgb_img.save(
plot_path /
'{}'.format('false_map_overlay' + str(pctl) + '.png'),
dpi=(300, 300))
plt.close('all')
def prediction_bnn(img_list, pctls, feat_list_new, data_path, batch, MC_passes):
for j, img in enumerate(img_list):
epistemic_times = []
aleatoric_times = []
accuracy, precision, recall, f1 = [], [], [], []
preds_path = data_path / batch / 'predictions' / img
bin_file = preds_path / 'predictions.h5'
aleatoric_bin_file = preds_path / 'aleatoric_predictions.h5'
uncertainties_path = data_path / batch / 'uncertainties' / img
aleatoric_uncertainty_file = uncertainties_path / 'aleatoric_uncertainties.h5'
epistemic_uncertainty_file = uncertainties_path / 'epistemic_uncertainties.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(data_path, img, pctl, feat_list_new,
test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_test[data_vector_test[:, perm_index] == 1, flood_index] = 0
data_vector_test = np.delete(data_vector_test, perm_index, axis=1)
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[1] - 1], data_vector_test[:, data_shape[1] - 1]
y_test = to_categorical(y_test)
D = len(set(y_test[:, 0])) # Target classes
iterable = K.variable(np.ones(MC_passes))
print('Predicting (aleatoric) for {} at {}% cloud cover'.format(img, pctl))
model_path = data_path / batch / 'models' / img / '{}'.format(img + '_clouds_' + str(pctl) + '.h5')
start_time = time.time()
# aleatoric_model = tf.keras.models.load_model(model_path)
aleatoric_model = load_bayesian_model(model_path, MC_passes, D, iterable)
aleatoric_results = aleatoric_model.predict(X_test, verbose=1)
aleatoric_uncertainties = np.reshape(aleatoric_results[0][:, D:], (-1))
try:
uncertainties_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(aleatoric_uncertainty_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier aleatoric uncertainties')
del f[str(pctl)]
f.create_dataset(str(pctl), data=aleatoric_uncertainties)
logits = aleatoric_results[0][:, 0:D]
aleatoric_preds = np.argmax(aleatoric_results[1], axis=1)
aleatoric_times.append(timer(start_time, time.time(), False))
try:
preds_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(aleatoric_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier aleatoric predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=aleatoric_preds)
print('Predicting (epistemic) for {} at {}% cloud cover'.format(img, pctl))
start_time = time.time()
epistemic_model = get_epistemic_uncertainty_model(model_path, T=MC_passes, D=D)
epistemic_results = epistemic_model.predict(X_test, verbose=2, use_multiprocessing=True)
epistemic_uncertainties = epistemic_results[0]
with h5py.File(epistemic_uncertainty_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier epistemic uncertainties')
del f[str(pctl)]
f.create_dataset(str(pctl), data=epistemic_uncertainties)
epistemic_preds = np.argmax(epistemic_results[1], axis=1)
epistemic_times.append(timer(start_time, time.time(), False))
with h5py.File(bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier epistemic predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=epistemic_preds)
print('Evaluating predictions')
accuracy.append(accuracy_score(y_test[:, 1], epistemic_preds))
precision.append(precision_score(y_test[:, 1], epistemic_preds))
recall.append(recall_score(y_test[:, 1], epistemic_preds))
f1.append(f1_score(y_test[:, 1], epistemic_preds))
del aleatoric_model, aleatoric_results, aleatoric_uncertainties, logits, aleatoric_preds, \
epistemic_model, epistemic_uncertainties, epistemic_preds, epistemic_results, \
data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(np.column_stack([pctls, accuracy, precision, recall, f1]),
columns=['cloud_cover', 'accuracy', 'precision', 'recall', 'f1'])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
epistemic_times = [float(i) for i in epistemic_times]
aleatoric_times = [float(i) for i in aleatoric_times]
times_df = pd.DataFrame(np.column_stack([pctls, epistemic_times, aleatoric_times]),
columns=['cloud_cover', 'epistemic_testing_time', 'aleatoric_testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
def uncertainty_map_NN(self):
data_path = self.data_path
plt.ioff()
my_dpi = 300
# Get predictions and variances
for img in self.img_list:
print('Creating uncertainty map for {}'.format(img))
plot_path = data_path / self.batch / 'plots' / img
aleatoric_bin_file = data_path / self.batch / 'uncertainties' / img / 'aleatoric_uncertainties.h5'
epistemic_bin_file = data_path / self.batch / 'uncertainties' / img / 'epistemic_uncertainties.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
try:
plot_path.mkdir(parents=True)
except FileExistsError:
pass
# Reshape variance values back into image band
with rasterio.open(stack_path, 'r') as ds:
shape = ds.read(1).shape # Shape of full original image
for pctl in self.pctls:
with h5py.File(aleatoric_bin_file, 'r') as f:
aleatoric = f[str(pctl)]
aleatoric = np.array(aleatoric)
with h5py.File(epistemic_bin_file, 'r') as f:
epistemic = f[str(pctl)]
epistemic = np.array(epistemic)
uncertainties = aleatoric + epistemic
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, self.feat_list_all, test=True)
perm_index = feat_keep.index('GSWPerm')
perm = data_test[:, :, perm_index]
# Aleatoric + epistemic
unc_image = np.zeros(shape)
unc_image[:] = np.nan
rows, cols = zip(data_ind_test)
unc_image[rows, cols] = uncertainties
unc_image[perm == 1] = 0
fig, ax = plt.subplots()
my_img = ax.imshow(unc_image, cmap='plasma')
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
im_ratio = unc_image.shape[0] / unc_image.shape[1]
fig.colorbar(my_img,
ax=ax,
fraction=0.02 * im_ratio,
pad=0.02 * im_ratio)
plt.tight_layout()
plt.savefig(
plot_path /
'{}'.format('map_uncertainty_' + str(pctl) + '.png'),
dpi=my_dpi,
pad_inches=0.0)
# Aleatoric
aleatoric_image = np.zeros(shape)
aleatoric_image[:] = np.nan
rows, cols = zip(data_ind_test)
aleatoric_image[rows, cols] = aleatoric
aleatoric_image[perm == 1] = 0
fig, ax = plt.subplots()
my_img = ax.imshow(aleatoric_image, cmap='plasma')
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
im_ratio = aleatoric_image.shape[0] / aleatoric_image.shape[1]
fig.colorbar(my_img,
ax=ax,
fraction=0.02 * im_ratio,
pad=0.02 * im_ratio)
plt.tight_layout()
plt.savefig(plot_path /
'{}'.format('map_aleatoric_' + str(pctl) + '.png'),
dpi=my_dpi,
pad_inches=0.0)
# Epistemic
epistemic_image = np.zeros(shape)
epistemic_image[:] = np.nan
rows, cols = zip(data_ind_test)
epistemic_image[rows, cols] = epistemic
epistemic_image[perm == 1] = 0
fig, ax = plt.subplots()
my_img = ax.imshow(epistemic_image, cmap='plasma')
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
im_ratio = epistemic_image.shape[0] / epistemic_image.shape[1]
fig.colorbar(my_img,
ax=ax,
fraction=0.02 * im_ratio,
pad=0.02 * im_ratio)
plt.tight_layout()
plt.savefig(plot_path /
'{}'.format('map_epistemic_' + str(pctl) + '.png'),
dpi=my_dpi,
pad_inches=0.0)
plt.close('all')
def NN_training(img_list, pctls, model_func, feat_list_new, data_path, batch,
**model_params):
get_model = model_func
for j, img in enumerate(img_list):
print(img + ': stacking tif, generating clouds')
times = []
lr_mins = []
lr_maxes = []
tif_stacker(data_path,
img,
feat_list_new,
features=True,
overwrite=False)
cloud_generator(img, data_path, overwrite=False)
for i, pctl in enumerate(pctls):
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
tf.keras.backend.clear_session()
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
# data_vector_train[data_vector_train[:, perm_index] == 1, flood_index] = 0
data_vector_train = np.delete(data_vector_train,
perm_index,
axis=1)
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] -
1], data_vector_train[:,
shape[1]
- 1]
INPUT_DIMS = X_train.shape[1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
lr_plots_path = metrics_path.parents[1] / 'lr_plots'
lr_vals_path = metrics_path.parents[1] / 'lr_vals'
try:
metrics_path.mkdir(parents=True)
model_path.mkdir(parents=True)
lr_plots_path.mkdir(parents=True)
lr_vals_path.mkdir(parents=True)
except FileExistsError:
pass
# ---------------------------------------------------------------------------------------------------
# Determine learning rate by finding max loss decrease during single epoch training
lrRangeFinder = LrRangeFinder(start_lr=0.1, end_lr=2)
lr_model_params = {
'batch_size': model_params['batch_size'],
'epochs': 1,
'verbose': 2,
'callbacks': [lrRangeFinder],
'use_multiprocessing': True
}
model = model_func(INPUT_DIMS)
print('Finding learning rate')
model.fit(X_train, y_train, **lr_model_params)
lr_min, lr_max, lr, losses = lr_plots(lrRangeFinder, lr_plots_path,
img, pctl)
lr_mins.append(lr_min)
lr_maxes.append(lr_max)
# ---------------------------------------------------------------------------------------------------
# Training the model with cyclical learning rate scheduler
model_path = model_path / '{}'.format(img + '_clouds_' +
str(pctl) + '.h5')
scheduler = SGDRScheduler(min_lr=lr_min,
max_lr=lr_max,
lr_decay=0.9,
cycle_length=3,
mult_factor=1.5)
callbacks = [
tf.keras.callbacks.EarlyStopping(
monitor='sparse_categorical_accuracy',
min_delta=0.0001,
patience=10),
tf.keras.callbacks.ModelCheckpoint(filepath=str(model_path),
monitor='loss',
save_best_only=True),
CSVLogger(metrics_path / 'training_log.log'), scheduler
]
model = get_model(INPUT_DIMS)
print('Training full model with best LR')
start_time = time.time()
model.fit(X_train, y_train, **model_params, callbacks=callbacks)
end_time = time.time()
times.append(timer(start_time, end_time, False))
# model.save(model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([pctls, times])
times_df = pd.DataFrame(times,
columns=['cloud_cover', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
lr_range = np.column_stack([pctls, lr_mins, lr_maxes])
lr_avg = np.mean(lr_range[:, 1:2], axis=1)
lr_range = np.column_stack([lr_range, lr_avg])
lr_range_df = pd.DataFrame(
lr_range, columns=['cloud_cover', 'lr_min', 'lr_max', 'lr_avg'])
lr_range_df.to_csv((lr_vals_path / img).with_suffix('.csv'),
index=False)
losses_path = lr_vals_path / img / '{}'.format('losses_' + str(pctl) +
'.csv')
try:
losses_path.parent.mkdir(parents=True)
except FileExistsError:
pass
lr_losses = np.column_stack([lr, losses])
lr_losses = pd.DataFrame(lr_losses, columns=['lr', 'losses'])
lr_losses.to_csv(losses_path, index=False)
# =================================================================================
img = img_list[0]
pctl = pctls[0]
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path, img, feat_list_new, features=True, overwrite=False)
cloud_generator(img, data_path, overwrite=False)
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(data_path, img, pctl,
feat_list_all,
test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
# data_vector_train[data_vector_train[:, perm_index] == 1, flood_index] = 0
data_vector_train = np.delete(data_vector_train, perm_index, axis=1)
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] - 1], data_vector_train[:, shape[1] - 1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
if not model_path.exists():
model_path.mkdir(parents=True)
if not metrics_path.exists():
def log_reg_training_buffer(img_list, pctls, feat_list_new, data_path, batch,
buffer_iters, buffer_flood_only):
from imageio import imwrite
for img in img_list:
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path,
img,
feat_list_new,
features=True,
overwrite=False)
cloud_generator(img, data_path, overwrite=False)
for pctl in pctls:
print('Preprocessing')
data_train_full, data_vector_train, data_ind_train, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=False)
for buffer_iter in buffer_iters:
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_train = data_train_full.copy()
if buffer_flood_only:
data_train[data_train[:, :, perm_index] == 1,
flood_index] = 0
mask = data_train[:, :, flood_index]
buffer_mask = np.invert(
binary_dilation(mask, iterations=buffer_iter))
else:
mask = data_train[:, :, flood_index]
buffer_mask = np.invert(
binary_dilation(mask, iterations=buffer_iter))
data_train[data_train[:, :, perm_index] == 1,
flood_index] = 0
data_train[buffer_mask] = np.nan
data_vector_train = data_train.reshape([
data_train.shape[0] * data_train.shape[1],
data_train.shape[2]
])
data_vector_train = data_vector_train[
~np.isnan(data_vector_train).any(axis=1)]
data_vector_train = np.delete(
data_vector_train, perm_index,
axis=1) # Remove perm water column
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[
1] - 1], data_vector_train[:, shape[1] - 1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
if not model_path.exists():
model_path.mkdir(parents=True)
if not metrics_path.exists():
metrics_path.mkdir(parents=True)
model_path = model_path / '{}'.format(img + '_clouds_' + str(
pctl) + 'buff' + str(buffer_iter) + '.sav')
# Save data flooding image to check that buffering is working correctly
# imwrite(model_path.parents[0] / '{}'.format('buff' + str(buffer_iter) + '.jpg'), data_train[:, :, 6])
print('Training')
start_time = time.time()
logreg = LogisticRegression(n_jobs=-1, solver='sag')
logreg.fit(X_train, y_train)
end_time = time.time()
times.append(timer(start_time, end_time, False))
joblib.dump(logreg, model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([
np.repeat(pctls, len(buffer_iters)),
np.tile(buffer_iters, len(pctls)), times
])
times_df = pd.DataFrame(
times, columns=['cloud_cover', 'buffer_iters', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
def rf_training(img_list, pctls, feat_list_new, data_path, batch, n_jobs):
for j, img in enumerate(img_list):
print(img + ': stacking tif, generating clouds')
times = []
tif_stacker(data_path, img, feat_list_new, features=True, overwrite=False)
cloud_generator(img, data_path, overwrite=False)
for i, pctl in enumerate(pctls):
print(img, pctl, '% CLOUD COVER')
print('Preprocessing')
tf.keras.backend.clear_session()
data_train, data_vector_train, data_ind_train, feat_keep = preprocessing(data_path, img, pctl,
feat_list_new,
test=False)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_train[
data_vector_train[:, perm_index] == 1, flood_index] = 0 # Remove flood water that is perm water
data_vector_train = np.delete(data_vector_train, perm_index, axis=1) # Remove perm water column
shape = data_vector_train.shape
X_train, y_train = data_vector_train[:, 0:shape[1] - 1], data_vector_train[:, shape[1] - 1]
model_path = data_path / batch / 'models' / img
metrics_path = data_path / batch / 'metrics' / 'training' / img / '{}'.format(
img + '_clouds_' + str(pctl))
try:
metrics_path.mkdir(parents=True)
model_path.mkdir(parents=True)
except FileExistsError:
pass
param_path = data_path / batch / 'models' / '4514_LC08_027033_20170826_1' / '{}'.format(
'4514_LC08_027033_20170826_1_clouds_50params.pkl')
model_path = model_path / '{}'.format(img + '_clouds_' + str(pctl) + '.sav')
# # Hyperparameter optimization
# print('Hyperparameter search')
# base_rf = RandomForestClassifier(random_state=0, n_estimators=100, max_leaf_nodes=10)
# space = [skopt.space.Integer(2, 1000, name="max_leaf_nodes"),
# skopt.space.Integer(2, 200, name="n_estimators"),
# skopt.space.Integer(2, 3000, name="max_depth")]
# @use_named_args(space)
# def objective(**params):
# base_rf.set_params(**params)
# return -np.mean(cross_val_score(base_rf, X_train, y_train, cv=5, n_jobs=n_jobs, scoring="f1"))
# res_rf = forest_minimize(objective, space, base_estimator='RF', n_calls=11,
# random_state=0, verbose=True, n_jobs=n_jobs)
# print(type(res_rf))
# skopt.utils.dump(res_rf, param_path, store_objective=False)
res_rf = skopt.utils.load(param_path)
# Training
print('Training with optimized hyperparameters')
start_time = time.time()
rf = RandomForestClassifier(random_state=0,
max_leaf_nodes=res_rf.x[0],
n_estimators=res_rf.x[1],
max_depth=res_rf.x[2],
n_jobs=-1)
rf.fit(X_train, y_train)
end_time = time.time()
times.append(timer(start_time, end_time, False))
joblib.dump(rf, model_path)
metrics_path = metrics_path.parent
times = [float(i) for i in times]
times = np.column_stack([pctls, times])
times_df = pd.DataFrame(times, columns=['cloud_cover', 'training_time'])
times_df.to_csv(metrics_path / 'training_times.csv', index=False)
def prediction_BNN_gen_model(img_list, pctls, feat_list_new, data_path, batch,
MC_passes, **model_params):
for j, img in enumerate(img_list):
times = []
accuracy, precision, recall, f1 = [], [], [], []
preds_path = data_path / batch / 'predictions' / img
bin_file = preds_path / 'predictions.h5'
model_path = data_path / batch / 'models' / 'gen_model.h5'
uncertainties_path = data_path / batch / 'uncertainties' / img
aleatoric_bin_file = uncertainties_path / 'aleatoric_uncertainties.h5'
epistemic_bin_file = uncertainties_path / 'epistemic_uncertainties.h5'
metrics_path = data_path / batch / 'metrics' / 'testing' / img
try:
metrics_path.mkdir(parents=True)
except FileExistsError:
print('Metrics directory already exists')
for i, pctl in enumerate(pctls):
print('Preprocessing', img, pctl, '% cloud cover')
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, feat_list_new, test=True)
perm_index = feat_keep.index('GSW_perm')
flood_index = feat_keep.index('flooded')
data_vector_test[
data_vector_test[:, perm_index] == 1,
flood_index] = 0 # Remove flood water that is perm water
data_vector_test = np.delete(data_vector_test, perm_index,
axis=1) # Remove GSW_perm column
data_shape = data_vector_test.shape
X_test, y_test = data_vector_test[:, 0:data_shape[
1] - 1], data_vector_test[:, data_shape[1] - 1]
print('Predicting for {} at {}% cloud cover'.format(img, pctl))
start_time = time.time()
model = tf.keras.models.load_model(model_path)
p_hat = []
for t in range(MC_passes):
p_hat.append(
model.predict(X_test,
batch_size=model_params['batch_size'],
use_multiprocessing=True)[:, 1])
p_hat = np.array(p_hat)
preds = np.round(np.mean(p_hat, axis=0))
aleatoric = np.mean(p_hat * (1 - p_hat), axis=0)
epistemic = np.mean(p_hat**2, axis=0) - np.mean(p_hat, axis=0)**2
try:
preds_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier mean predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=preds)
try:
uncertainties_path.mkdir(parents=True)
except FileExistsError:
pass
with h5py.File(epistemic_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier epistemic predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=epistemic)
with h5py.File(aleatoric_bin_file, 'a') as f:
if str(pctl) in f:
print('Deleting earlier epistemic predictions')
del f[str(pctl)]
f.create_dataset(str(pctl), data=aleatoric)
times.append(timer(start_time, time.time(), False))
print('Evaluating predictions')
accuracy.append(accuracy_score(y_test, preds))
precision.append(precision_score(y_test, preds))
recall.append(recall_score(y_test, preds))
f1.append(f1_score(y_test, preds))
del preds, p_hat, aleatoric, epistemic, X_test, y_test, model, data_test, data_vector_test, data_ind_test
metrics = pd.DataFrame(
np.column_stack([pctls, accuracy, precision, recall, f1]),
columns=['cloud_cover', 'accuracy', 'precision', 'recall', 'f1'])
metrics.to_csv(metrics_path / 'metrics.csv', index=False)
times = [float(i) for i in times]
times_df = pd.DataFrame(np.column_stack([pctls, times]),
columns=['cloud_cover', 'testing_time'])
times_df.to_csv(metrics_path / 'testing_times.csv', index=False)
def fpfn_map(self, probs):
data_path = self.data_path
plt.ioff()
my_dpi = 300
# Get predictions and variances
for img in self.img_list:
print('Creating FN/FP map for {}'.format(img))
plot_path = data_path / self.batch / 'plots' / img
preds_bin_file = data_path / self.batch / 'predictions' / img / 'predictions.h5'
stack_path = data_path / 'images' / img / 'stack' / 'stack.tif'
try:
plot_path.mkdir(parents=True)
except FileExistsError:
pass
# Reshape variance values back into image band
with rasterio.open(stack_path, 'r') as ds:
shape = ds.read(1).shape # Shape of full original image
for pctl in self.pctls:
data_test, data_vector_test, data_ind_test, feat_keep = preprocessing(
data_path, img, pctl, self.feat_list_all, test=True)
print('Fetching flood predictions for',
str(pctl) + '{}'.format('%'))
with h5py.File(preds_bin_file, 'r') as f:
predictions = f[str(pctl)]
if probs:
predictions = np.argmax(
np.array(predictions),
axis=1) # Copy h5 dataset to array
if not probs:
predictions = np.array(predictions)
prediction_img = np.zeros(shape)
prediction_img[:] = np.nan
rows, cols = zip(data_ind_test)
prediction_img[rows, cols] = predictions
perm_index = feat_keep.index('GSWPerm')
flood_index = feat_keep.index('flooded')
floods = data_test[:, :, flood_index]
perm_water = (data_test[:, :, perm_index] == 1)
tp = np.logical_and(prediction_img == 1,
floods == 1).astype('int')
tn = np.logical_and(prediction_img == 0,
floods == 0).astype('int')
fp = np.logical_and(prediction_img == 1,
floods == 0).astype('int')
fn = np.logical_and(prediction_img == 0,
floods == 1).astype('int')
# Mask out clouds, etc.
tp = ma.masked_array(tp, mask=np.isnan(prediction_img))
fp = ma.masked_array(fp, mask=np.isnan(prediction_img))
fn = ma.masked_array(fn, mask=np.isnan(prediction_img))
true_false = fp + (fn * 2) + (tp * 3)
true_false[perm_water] = -1
colors = []
class_labels = []
if np.sum(perm_water) != 0:
colors.append('darkgrey')
class_labels.append('Permanent Water')
if np.sum(tn) != 0:
colors.append('saddlebrown')
class_labels.append('True Negatives')
if np.sum(fp) != 0:
colors.append('limegreen')
class_labels.append('False Floods')
if np.sum(fn) != 0:
colors.append('red')
class_labels.append('Missed Floods')
if np.sum(tp) != 0:
colors.append('blue')
class_labels.append('True Floods')
legend_patches = [
Patch(color=icolor, label=label)
for icolor, label in zip(colors, class_labels)
]
cmap = ListedColormap(colors)
fig, ax = plt.subplots(figsize=(8, 5))
ax.imshow(true_false, cmap=cmap)
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
ax.legend(labels=class_labels,
handles=legend_patches,
loc='lower left',
bbox_to_anchor=(0, 1),
ncol=5,
borderaxespad=0,
frameon=False,
prop={'size': 7})
plt.tight_layout()
plt.savefig(plot_path /
'{}'.format('map_fpfn_' + str(pctl) + '.png'),
dpi=my_dpi,
pad_inches=0.0)
plt.close('all')
