def test_is_even():
even_number = random.randrange(2, 1000, 2)
odd_number = random.randrange(1, 1001, 2)
with pytest.raises(NotImplementedError):
assert tools.is_even(0)
assert tools.is_even(even_number)
assert not tools.is_even(odd_number)
def __get_stacks(self, index):
centre_z = self.batches[index][0].z
half_cube_depth = self.num_planes_needed_for_cube // 2
min_plane = centre_z - half_cube_depth
if is_even(self.num_planes_needed_for_cube):
# WARNING: not centered because even
max_plane = centre_z + half_cube_depth
else:
# centered
max_plane = centre_z + half_cube_depth + 1
signal_stack = np.empty((
self.num_planes_needed_for_cube,
self.image_height,
self.image_width,
))
background_stack = np.empty_like(signal_stack)
for plane, plane_path in enumerate(
self.signal_planes[min_plane:max_plane]):
signal_stack[plane] = tifffile.imread(plane_path)
for plane, plane_path in enumerate(
self.background_planes[min_plane:max_plane]):
background_stack[plane] = tifffile.imread(plane_path)
return signal_stack, background_stack
def pad_center_2d(img, x_size=None, y_size=None, pad_mode="edge"):
"""
Pads the edges of a 2D image, and returns a larger image. If the desired
dimension is smaller than the original dimension, nothing is changed.
:param img: 2D input image
:param x_size: New length in x (default: None, which does nothing)
:param y_size: New length in y (default: None, which does nothing)
:return: New, larger array
"""
y, x = img.shape
# TODO: simplify
if x_size is None:
x_pad = 0
elif x_size <= x:
x_pad = 0
else:
x_pad = x_size - x
if y_size is None:
y_pad = 0
elif y_size <= y:
y_pad = 0
else:
y_pad = y_size - y
if x_pad > 0:
if tools.is_even(x_pad):
x_front = x_back = int(x_pad / 2)
else:
x_front = int(x_pad // 2)
x_back = int(x_front + 1)
else:
x_front = x_back = 0
if y_pad > 0:
if tools.is_even(y_pad):
y_front = y_back = int(y_pad / 2)
else:
y_front = int(y_pad // 2)
y_back = int(y_front + 1)
else:
y_front = y_back = 0
return np.pad(img, ((y_front, y_back), (x_front, x_back)), pad_mode)
def main(args):
start_time = datetime.now()
cells = get_cells(args.paths.cells_file_path)
if not cells:
logging.error("No cells found, exiting. Please check your "
"cell xml file path: {}"
" or verify your cell types "
"(maybe use cells-only option to disable)".format(
args.paths.cells_file_path))
raise ValueError("No cells found, exiting. Please check your "
"cell xml file path: {}"
" or verify your cell types "
"(maybe use cells-only option to disable)".format(
args.paths.cells_file_path))
if args.z_pixel_um != args.z_pixel_um_network:
plane_scaling_factor = args.z_pixel_um_network / args.z_pixel_um
num_planes_needed_for_cube = round(args.cube_depth *
plane_scaling_factor)
else:
num_planes_needed_for_cube = args.cube_depth
planes_paths = {}
# Use args.paths for this
all_channel_ids = args.signal_ch_ids + [args.background_ch_id]
for idx, planes_paths_file_path in enumerate(args.all_planes_paths):
channel = all_channel_ids[idx]
if args.cube_extract_cli:
channel_list = all_channel_ids
args.signal_channel = all_channel_ids[0]
else:
# only extract those channels that are necessary for classification
channel_list = [args.signal_channel, args.background_ch_id]
if channel in channel_list:
planes_paths[channel] = system.get_sorted_file_paths(
planes_paths_file_path, file_extension="tif")
if num_planes_needed_for_cube > len(planes_paths[0]):
raise StackSizeError("The number of planes provided is not sufficient "
"for any cubes to be extracted. Please check the "
"input data")
first_plane = tifffile.imread(list(planes_paths.values())[0][0])
planes_shape = first_plane.shape
brain_depth = len(list(planes_paths.values())[0])
# TODO: use to assert all centre planes processed
center_planes = sorted(list(set([cell.z for cell in cells])))
# REFACTOR: rename (clashes with different meaning of planes_to_read below)
planes_to_read = np.zeros(brain_depth, dtype=np.bool)
if tools.is_even(num_planes_needed_for_cube):
half_nz = num_planes_needed_for_cube // 2
# WARNING: not centered because even
for p in center_planes:
planes_to_read[p - half_nz:p + half_nz] = 1
else:
half_nz = num_planes_needed_for_cube // 2
# centered
for p in center_planes:
planes_to_read[p - half_nz:p + half_nz + 1] = 1
planes_to_read = np.where(planes_to_read)[0]
if not planes_to_read.size:
logging.error(
f"No planes found, you need at the very least "
f"{num_planes_needed_for_cube} "
f"planes to proceed (i.e. cube z size)"
f"Brain z dimension is {brain_depth}.",
stack_info=True,
)
raise ValueError(f"No planes found, you need at the very least "
f"{num_planes_needed_for_cube} "
f"planes to proceed (i.e. cube z size)"
f"Brain z dimension is {brain_depth}.")
# TODO: check if needs to flip args.cube_width and args.cube_height
cells_groups = cell_tools.group_cells_by_z(cells)
# copies=2 is set because at all times there is a plane queue (deque)
# and an array passed to `Cube`
ram_per_process = get_ram_requirement_per_process(
planes_paths[args.signal_channel][0],
num_planes_needed_for_cube,
copies=2,
)
n_processes = system.get_num_processes(
min_free_cpu_cores=args.n_free_cpus,
ram_needed_per_process=ram_per_process,
n_max_processes=len(planes_to_read),
fraction_free_ram=0.2,
max_ram_usage=system.memory_in_bytes(args.max_ram, "GB"),
)
# TODO: don't need to extract cubes from all channels if
# n_signal_channels>1
with ProcessPoolExecutor(max_workers=n_processes) as executor:
n_planes_per_chunk = len(planes_to_read) // n_processes
for i in range(n_processes):
start_idx = i * n_planes_per_chunk
end_idx = (start_idx + n_planes_per_chunk +
num_planes_needed_for_cube - 1)
if end_idx > planes_to_read[-1]:
end_idx = None
sub_planes_to_read = planes_to_read[start_idx:end_idx]
executor.submit(
save_cubes,
cells_groups,
planes_paths,
sub_planes_to_read,
planes_shape,
args.x_pixel_um,
args.y_pixel_um,
args.x_pixel_um_network,
args.y_pixel_um_network,
num_planes_for_cube=num_planes_needed_for_cube,
cube_width=args.cube_width,
cube_height=args.cube_height,
cube_depth=args.cube_depth,
thread_id=i,
output_dir=args.paths.tmp__cubes_output_dir,
save_empty_cubes=args.save_empty_cubes,
)
total_cubes = system.get_number_of_files_in_dir(
args.paths.tmp__cubes_output_dir)
time_taken = datetime.now() - start_time
logging.info("All cubes ({}) extracted in: {}".format(
total_cubes, time_taken))
def save_cubes(
cells,
planes_paths,
planes_to_read,
planes_shape,
x_pix_um,
y_pix_um,
x_pix_um_network,
y_pix_um_network,
num_planes_for_cube=20,
cube_width=50,
cube_height=50,
cube_depth=20,
thread_id=0,
output_dir="",
save_empty_cubes=False,
):
"""
:param cells:
:param planes_paths:
:param planes_to_read:
:param planes_shape:
:param x_pix_um:
:param y_pix_um:
:param x_pix_um_network:
:param y_pix_um_network:
:param num_planes_for_cube:
:param cube_width:
:param cube_height:
:param cube_depth:
:param thread_id:
:param output_dir:
:param save_empty_cubes:
:return:
"""
channels = list(planes_paths.keys())
stack_shape = planes_shape + (num_planes_for_cube, )
stacks = {}
planes_queues = {}
for ch in channels:
stacks[ch] = np.zeros(stack_shape, dtype=np.uint16)
planes_queues[ch] = deque(maxlen=num_planes_for_cube)
for plane_idx in tqdm(planes_to_read, desc="Thread: {}".format(thread_id)):
for ch in channels:
plane_path = planes_paths[ch][plane_idx]
planes_queues[ch].append(tifffile.imread(plane_path))
if len(planes_queues[ch]) == num_planes_for_cube:
if tools.is_even(num_planes_for_cube):
cell_z = int(plane_idx - num_planes_for_cube / 2 + 1)
else:
cell_z = int(plane_idx - floor(num_planes_for_cube) / 2 +
1)
for j, plane in enumerate(planes_queues[ch]):
stacks[ch][:, :, j] = plane
# ensures no cube_depth planes at the end
planes_queues[ch].popleft()
# required since we provide all cells
# TODO: if len(planes_queues[ch])
# < num_planes_for_cube -1: break
for cell in cells[cell_z]:
cube = Cube(
cell,
ch,
stacks,
x_pix_um=x_pix_um,
y_pix_um=y_pix_um,
x_pix_um_network=x_pix_um_network,
y_pix_um_network=y_pix_um_network,
final_depth=cube_depth,
width=cube_width,
height=cube_height,
depth=num_planes_for_cube,
)
if not cube.empty or (cube.empty and save_empty_cubes):
tifffile.imsave(os.path.join(output_dir, str(cube)),
cube.data)
def main(
cells,
cubes_output_dir,
planes_paths,
cube_depth,
cube_width,
cube_height,
x_pixel_um,
y_pixel_um,
z_pixel_um,
x_pixel_um_network,
y_pixel_um_network,
z_pixel_um_network,
max_ram,
n_free_cpus=4,
save_empty_cubes=False,
):
start_time = datetime.now()
if z_pixel_um != z_pixel_um_network:
plane_scaling_factor = z_pixel_um_network / z_pixel_um
num_planes_needed_for_cube = round(cube_depth * plane_scaling_factor)
else:
num_planes_needed_for_cube = cube_depth
if num_planes_needed_for_cube > len(planes_paths[0]):
raise StackSizeError("The number of planes provided is not sufficient "
"for any cubes to be extracted. Please check the "
"input data")
first_plane = tifffile.imread(list(planes_paths.values())[0][0])
planes_shape = first_plane.shape
brain_depth = len(list(planes_paths.values())[0])
# TODO: use to assert all centre planes processed
center_planes = sorted(list(set([cell.z for cell in cells])))
# REFACTOR: rename (clashes with different meaning of planes_to_read below)
planes_to_read = np.zeros(brain_depth, dtype=np.bool)
if tools.is_even(num_planes_needed_for_cube):
half_nz = num_planes_needed_for_cube // 2
# WARNING: not centered because even
for p in center_planes:
planes_to_read[p - half_nz:p + half_nz] = 1
else:
half_nz = num_planes_needed_for_cube // 2
# centered
for p in center_planes:
planes_to_read[p - half_nz:p + half_nz + 1] = 1
planes_to_read = np.where(planes_to_read)[0]
if not planes_to_read.size:
logging.error(
f"No planes found, you need at the very least "
f"{num_planes_needed_for_cube} "
f"planes to proceed (i.e. cube z size)"
f"Brain z dimension is {brain_depth}.",
stack_info=True,
)
raise ValueError(f"No planes found, you need at the very least "
f"{num_planes_needed_for_cube} "
f"planes to proceed (i.e. cube z size)"
f"Brain z dimension is {brain_depth}.")
# TODO: check if needs to flip args.cube_width and args.cube_height
cells_groups = group_cells_by_z(cells)
# copies=2 is set because at all times there is a plane queue (deque)
# and an array passed to `Cube`
ram_per_process = get_ram_requirement_per_process(
planes_paths[0][0],
num_planes_needed_for_cube,
copies=2,
)
n_processes = get_num_processes(
min_free_cpu_cores=n_free_cpus,
ram_needed_per_process=ram_per_process,
n_max_processes=len(planes_to_read),
fraction_free_ram=0.2,
max_ram_usage=system.memory_in_bytes(max_ram, "GB"),
)
# TODO: don't need to extract cubes from all channels if
# n_signal_channels>1
with ProcessPoolExecutor(max_workers=n_processes) as executor:
n_planes_per_chunk = len(planes_to_read) // n_processes
for i in range(n_processes):
start_idx = i * n_planes_per_chunk
end_idx = (start_idx + n_planes_per_chunk +
num_planes_needed_for_cube - 1)
if end_idx > planes_to_read[-1]:
end_idx = None
sub_planes_to_read = planes_to_read[start_idx:end_idx]
executor.submit(
save_cubes,
cells_groups,
planes_paths,
sub_planes_to_read,
planes_shape,
x_pixel_um,
y_pixel_um,
x_pixel_um_network,
y_pixel_um_network,
num_planes_for_cube=num_planes_needed_for_cube,
cube_width=cube_width,
cube_height=cube_height,
cube_depth=cube_depth,
thread_id=i,
output_dir=cubes_output_dir,
save_empty_cubes=save_empty_cubes,
)
total_cubes = system.get_number_of_files_in_dir(cubes_output_dir)
time_taken = datetime.now() - start_time
logging.info("All cubes ({}) extracted in: {}".format(
total_cubes, time_taken))