def __call__(self, images):
# input_dtypes = copy_dtypes_for_restore(images, force_list=True)
result = images
nb_images = len(images)
# Generate new seeds con
seeds = ia.current_random_state().randint(0, 10**6, (nb_images, ))
rs_image = ia.new_random_state(seeds[0])
per_channel = self.per_channel.draw_sample(random_state=rs_image)
if per_channel == 1:
nb_channels = images.shape[1]
for c in range(nb_channels):
samples = self.value.draw_samples(
(nb_images, 1, 1, 1),
random_state=rs_image).astype(np.float32)
do_assert(samples.all() >= 0)
result[:, c:(c + 1),
...] = F.add(images[:, c:(c + 1), ...],
torch.cuda.FloatTensor(samples))
else:
samples = self.value.draw_samples(
(nb_images, 1, 1, 1), random_state=rs_image).astype(np.float32)
do_assert(samples.all() >= 0)
result = F.add(images, torch.cuda.FloatTensor(samples))
# image = meta.clip_augmented_image_(image, 0, 255) # TODO make value range more flexible
# image = meta.restore_augmented_image_dtype_(image, input_dtypes[i])
return result
def __call__(self, images):
nb_images = len(images) # 120 x 3 x H x W
seeds = ia.current_random_state().randint(0, 10**6, (nb_images, ))
rs_image = ia.new_random_state(seeds[0])
samples = self.p.draw_samples((nb_images, ), random_state=rs_image)
samples_true_index = np.where(samples == 1)[0]
samples_false_index = np.where(samples == 0)[0]
# Check for the zero case , related to pytorch isuee of not accepting zero size array
if samples_true_index.size > 0:
samples_true_index = torch.cuda.LongTensor(samples_true_index)
images_to_transform = torch.index_select(images, 0,
samples_true_index)
if samples_false_index.size > 0:
# images_not_to_transform = torch.index_select(images, 0, torch.cuda.LongTensor(
# samples_false_index))
transformed_imgs = self.transform(images_to_transform)
images = images.index_copy_(0, samples_true_index,
transformed_imgs)
return images
# return torch.cat((self.transform(images_to_transform), images_not_to_transform), 0)
else:
return self.transform(images)
else:
return images
def __call__(self, images):
result = images
nb_images = len(images)
# Generate new seeds con
seeds = ia.current_random_state().randint(0, 10**6, (nb_images, ))
rs_image = ia.new_random_state(seeds[0])
per_channel = self.per_channel.draw_sample(random_state=rs_image)
if per_channel == 1:
nb_channels = images.shape[1] #Considering (N C H W)
for c in range(nb_channels):
alphas = self.alpha.draw_samples(
(nb_images, 1, 1, 1),
random_state=rs_image).astype(np.float32)
do_assert(alphas.all() >= 0)
result[:, c:(c + 1),
...] = F.contrast(images[:, c:(c + 1), ...],
torch.cuda.FloatTensor(alphas))
else:
alphas = self.alpha.draw_samples(
(nb_images, 1, 1, 1), random_state=rs_image).astype(np.float32)
do_assert(alphas.all() >= 0)
#print(alphas)
result = F.contrast(images, torch.cuda.FloatTensor(alphas))
return result
def __call__(self, images):
# Convert to Grayscale direction
nb_images = len(images)
# Generate new seeds con
seeds = ia.current_random_state().randint(0, 10**6, (nb_images, ))
rs_image = ia.new_random_state(seeds[0])
samples = self.alpha.draw_samples(
(nb_images, 1, 1, 1), random_state=rs_image).astype(np.float32)
do_assert(samples.all() >= 0)
result = F.grayscale(images, torch.cuda.FloatTensor(samples))
return result
def __call__(self, images):
result = images
nb_images = len(images)
nb_channels, height, width = images[0].shape
seeds = ia.current_random_state().randint(0, 10**6, (nb_images, ))
rs_image = ia.new_random_state(seeds[0])
samples = self.sigma.draw_samples((nb_images, ), random_state=rs_image)
# note that while gaussian_filter can be applied to all channels
# at the same time, that should not be done here, because then
# the blurring would also happen across channels (e.g. red
# values might be mixed with blue values in RGB)
for c in range(nb_channels):
result[:, c:(c + 1), ...] = F.blur(result[:, c:(c + 1), ...],
samples)
return result
def draw_samples(self, size, random_state=None):
random_state = random_state if random_state is not None else ia.current_random_state(
)
return self._draw_samples(size, random_state)
def draw_samples(self, size, random_state=None):
random_state = random_state if random_state is not None else ia.current_random_state()
return self._draw_samples(size, random_state)