def set(in_nii, in_csv, in_labels, in_stats, in_limits, in_sort, out_nii):
df_stats = pd.read_csv(in_csv)
if inArgs.labels is not None:
df_stats = df_stats[df_stats['label'].isin(in_labels)]
stats_list = ['label'] + sum([in_stats], [])
if in_limits is not None:
df_limits = df_stats[
(df_stats[in_sort[0]] >= in_limits[0]) & (df_stats[in_sort[0]] <= in_limits[1])]
else:
df_limits = df_stats
df_sorted = df_limits.sort_values(in_sort, ascending=in_sort_direction).reset_index()
df_sorted = df_sorted.dropna()
in_nii = labels.read_nifti_file(in_in_nii, 'Label file does not exist')
in_array = in_nii.get_data()
out_array = np.zeros(in_array.shape)
for ii_label, ii_value in df_sorted[stats_list].get_values():
out_array[in_array == ii_label] = ii_value
nb.save(nb.Nifti1Image(out_array, [], in_nii.get_header()), in_out_nii)
return
def keep(in_nii, keep_labels, keep_csv_filename, out_filename, merge=None):
in_label_nii = labels.read_nifti_file(in_nii, 'Label file does not exist')
in_label_array = in_label_nii.get_data()
if len(keep_csv_filename):
csv_keep_labels = labels.read_labels_from_csv(keep_csv_filename)
else:
csv_keep_labels = []
all_labels = set(labels.get_labels(None, in_label_array))
keep_labels = set(
labels.get_labels(keep_labels + csv_keep_labels, in_label_array))
remove_labels = sorted(list(all_labels.symmetric_difference(keep_labels)))
out_label_array = in_label_array
for ii in remove_labels:
mask = in_label_array == ii
out_label_array[mask] = 0
if merge is not None and merge != 0: # isinstance(map, (int, long, float)) and float(map) !=0:
out_label_array = merge * (out_label_array > 0)
nb.save(nb.Nifti1Image(out_label_array, None, in_label_nii.get_header()),
out_filename)
def remove(in_nii,
remove_labels,
remove_csv_filename,
out_filename,
merge=None):
in_label_nii = labels.read_nifti_file(in_nii, 'Label file does not exist')
in_label_array = in_label_nii.get_data()
if len(remove_csv_filename):
csv_remove_labels = labels.read_labels_from_csv(remove_csv_filename)
else:
csv_remove_labels = []
remove_labels = set(
labels.get_labels(remove_labels + csv_remove_labels, in_label_array))
out_label_array = in_label_array
for ii in remove_labels:
mask = in_label_array == ii
out_label_array[mask] = 0
if merge is not None and merge != 0: # isinstance(map, (int, long, float)) and float(map) !=0:
out_label_array = merge * (out_label_array > 0)
nibabel.save(
nibabel.Nifti1Image(out_label_array, None, in_label_nii.get_header()),
out_filename)
def extract(in_filename,
in_csv,
in_extract_labels,
out_filename,
verbose=False,
merge=None):
# Read in label array
in_nii = labels.read_nifti_file(in_filename, 'Label file does not exist')
in_array = in_nii.get_data()
if len(in_csv):
csv_extract_labels = labels.read_labels_from_csv(in_csv)
else:
csv_extract_labels = []
# print ( inArgs.extract.shape)
# print ( csv_extract_labels.shape)
requested_labels = in_extract_labels + csv_extract_labels
extract_labels = labels.get_labels(requested_labels, in_array)
if verbose:
print('Requested labels for extraction not found',
list(set(requested_labels) - set(extract_labels)))
out_array = np.zeros(in_array.shape, dtype=np.int8)
for ii in extract_labels:
mask = in_array == ii
out_array[mask] = in_array[mask]
if merge is not None and merge != 0: # isinstance(map, (int, long, float)) and float(map) !=0:
out_array = merge * (out_array > 0)
nb.save(nb.Nifti1Image(out_array, None, in_nii.get_header()), out_filename)
return
def remove(in_nii, remove_labels, remove_csv_filename, out_filename):
in_label_nii = labels.read_nifti_file(in_nii, 'Label file does not exist')
in_label_array = in_label_nii.get_data()
if len(remove_csv_filename):
csv_remove_labels = labels.read_labels_from_csv(remove_csv_filename)
else:
csv_remove_labels = []
remove_labels = set(
labels.get_labels(remove_labels + csv_remove_labels, in_label_array))
out_label_array = in_label_array
for ii in remove_labels:
mask = in_label_array == ii
out_label_array[mask] = 0
nibabel.save(
nibabel.Nifti1Image(out_label_array, None, in_label_nii.get_header()),
out_filename)
def keep(in_nii, keep_labels, keep_csv_filename, out_filename):
in_label_nii = labels.read_nifti_file(in_nii, 'Label file does not exist')
in_label_array = in_label_nii.get_data()
if len(keep_csv_filename):
csv_keep_labels = labels.read_labels_from_csv(keep_csv_filename)
else:
csv_keep_labels = []
all_labels = set(labels.get_labels(None, in_label_array))
keep_labels = set(
labels.get_labels(keep_labels + csv_keep_labels, in_label_array))
remove_labels = sorted(list(all_labels.symmetric_difference(keep_labels)))
out_label_array = in_label_array
for ii in remove_labels:
mask = in_label_array == ii
out_label_array[mask] = 0
nb.save(nb.Nifti1Image(out_label_array, None, in_label_nii.get_header()),
out_filename)
parser.add_argument("-v","--verbose", help="Verbose flag", action="store_true", default=False )
parser.add_argument("--verbose_nlines", help="Number of lines to display (default=10)", default=10 )
parser.add_argument("--debug", help="Debug flag", action="store_true", default=False )
inArgs = parser.parse_args()
if inArgs.debug:
print("inArgs.in_nii = " + inArgs.in_nii + '\n')
print("inArgs.debug = " + str(inArgs.debug))
print("inArgs.verbose = " + str(inArgs.verbose))
label_nii = labels.read_nifti_file( inArgs.in_nii, 'Label file does not exist' )
label_array = label_nii.get_data()
labels = labels.get_labels( inArgs.labels, label_array)
df_stats = pd.DataFrame(columns=('label', 'com_x', 'com_y', 'com_z',
'label_volume', 'ellipsoid_volume',
'center_x', 'center_y', 'center_z',
'r1', 'r2', 'r3', 'fa' ))
if inArgs.stats is not None:
stats_list = inArgs.stats
else:
stats_list = list(df_stats.columns.values)
if inArgs.verbose:
jj=0
def list_labels(in_filename):
in_label_nii = labels.read_nifti_file(in_filename,
'Label file does not exist')
label_list = labels.get_labels(None, in_label_nii.get_data())
return label_list
def overlap( label_nii_filename, label2_nii_filename, requested_labels=[], verbose_flag=False, verbose_nlines=10, verbose_all_flag=False ):
# Load arrays
label_nii = labels.read_nifti_file( label_nii_filename, 'Label file does not exist' )
label2_nii = labels.read_nifti_file( label2_nii_filename, 'Image file does not exist' )
label_single_voxel_volume_mm3 = query_voxel_volume_mm3(label_nii)
label2_single_voxel_volume_mm3 = query_voxel_volume_mm3(label2_nii)
# System Checks to verify that the Array Size and Dimensions are compatible
label_array = label_nii.get_data()
label2_array = label2_nii.get_data()
if len(label2_array.shape) < 2 or len(label2_array.shape) > 4:
sys.exit('Only supports 3D and 4D image arrays')
# if not len(label_array.shape) == 3:
# sys.exit('Only supports 3D label arrays')
label_ndim = len(label_array.shape)
label2_ndim = len(label2_array.shape)
ndim = min([label_ndim, label2_ndim])
if not label2_array.shape[0:ndim] == label_array.shape[0:ndim]:
sys.exit('Image array and label array do not have the same voxel dimensions')
# Find a set of acceptable labels
label_list = labels.get_labels( requested_labels, label_array)
label2_list = labels.get_labels([], label2_array)
# Gather stats
if verbose_flag:
ii_verbose=0
pandas.set_option('expand_frame_repr', False)
df_stats = pandas.DataFrame(columns=('label1', 'label2', 'volume1_mm3', 'volume2_mm3', 'volume12_mm3',
'fraction12', 'x12_com', 'y12_com', 'z12_com'))
for ii, ii_label in enumerate(label_list):
mask1 = label_array[0, ...] == ii_label
_, label1_volume_mm3 = measure_volume(mask1, label_single_voxel_volume_mm3)
overlap_label2_list = list(numpy.unique(mask1 * label2_array))
print(overlap_label2_list)
for jj, jj_label in enumerate(overlap_label2_list):
mask2 = label2_array[0,...] == jj_label
mask12 = mask1 * mask2
_, label2_volume_mm3 = measure_volume( mask2, label_single_voxel_volume_mm3)
_, label12_volume_mm3 = measure_volume(mask12, label_single_voxel_volume_mm3)
fraction12 = label12_volume_mm3 / label1_volume_mm3
x12_com, y12_com, z12_com = ndimage.measurements.center_of_mass(mask12)
stats = [ii_label, jj_label, label1_volume_mm3, label2_volume_mm3, label2_volume_mm3,
fraction12, x12_com, y12_com, z12_com ]
if verbose_flag:
if ii_verbose==(verbose_nlines-1):
df_verbose = df_stats.tail(verbose_nlines)
print('\n')
print (df_verbose.to_string(formatters={'label1':'{:,.0f}'.format, 'label2':'{:,.0f}'.format
'volume1':'{:,.0f}'.format, 'volume2':'{:,.0f}'.format,
'volume12':'{:,.0f}'.format,
'fraction12':'{:,.3f}'.format,
'x12_com':'{:,.0f}'.format,
'y12_com':'{:,.0f}'.format,
'z12_com':'{:,.0f}'.format} ))
ii_verbose = 0
else:
ii_verbose += 1
df_stats.loc[len(df_stats)] = stats
def measure(label_nii_filename,
image_nii_filename,
requested_labels=[],
verbose_flag=False,
verbose_nlines=10,
verbose_all_flag=False):
# Load arrays
label_nii = labels.read_nifti_file(label_nii_filename,
'Label file does not exist')
image_nii = labels.read_nifti_file(image_nii_filename,
'Image file does not exist')
# System Checks to verify that the Array Size and Dimensions are compatible
image_array = image_nii.get_data()
label_array = label_nii.get_data()
if len(image_array.shape) < 2 or len(image_array.shape) > 4:
sys.exit('Only supports 3D and 4D image arrays')
# if not len(label_array.shape) == 3:
# sys.exit('Only supports 3D label arrays')
label_ndim = len(label_array.shape)
image_ndim = len(image_array.shape)
ndim = min([label_ndim, image_ndim])
if not image_array.shape[0:ndim] == label_array.shape[0:ndim]:
sys.exit(
'Image array and label array do not have the same voxel dimensions'
)
# Find a set of acceptable labels
label_list = labels.get_labels(requested_labels, label_array)
# Permute array or expand so desired stats is along first dimension
if image_ndim == 4:
nVolumes = int(image_array.shape[3])
image_array = numpy.transpose(image_array, [3, 0, 1, 2])
elif image_ndim == 3:
image_array = numpy.transpose(image_array, [2, 0, 1])
else:
nVolumes = 1
image_array = numpy.expand_dims(image_array, axis=0)
label_array = numpy.expand_dims(label_array, axis=0)
# Gather stats
if verbose_flag:
ii_verbose = 0
pandas.set_option('expand_frame_repr', False)
df_stats = pandas.DataFrame(columns=('label', 'x_com', 'y_com', 'z_com',
'time', 'mean', 'std', 'min', 'max'))
nlabels = len(label_list)
for ii, ii_label in enumerate(label_list):
for jj in range(0, nVolumes):
if label_ndim == 3:
mask = label_array[0, :, :, :] == ii_label
else:
mask = label_array[0, :, :] == ii_label
label_mean = numpy.mean(image_array[jj][mask])
label_std = numpy.std(image_array[jj][mask])
label_min = numpy.min(image_array[jj][mask])
label_max = numpy.max(image_array[jj][mask])
if label_ndim == 3:
x_com, y_com, z_com = ndimage.measurements.center_of_mass(mask)
else:
z_com = 0
x_com, y_com = ndimage.measurements.center_of_mass(mask)
stats = [
ii_label, x_com, y_com, z_com, jj, label_mean, label_std,
label_min, label_max
]
if verbose_flag and nlabels > 3 * verbose_nlines:
if ii_verbose == (verbose_nlines - 1):
df_verbose = df_stats.tail(verbose_nlines)
print('\n')
print(
df_verbose.to_string(
formatters={
'label': '{:,.0f}'.format,
'volume': '{:,.0f}'.format,
'time': '{:,.0f}'.format,
'mean': '{:,.3f}'.format,
'std': '{:,.3f}'.format,
'min': '{:,.3f}'.format,
'max': '{:,.3f}'.format,
'x_com': '{:,.0f}'.format,
'y_com': '{:,.0f}'.format,
'z_com': '{:,.0f}'.format
}))
ii_verbose = 0
else:
ii_verbose += 1
df_stats.loc[len(df_stats)] = stats
if verbose_flag:
if verbose_all_flag:
pandas.set_option('display.max_rows', len(df_stats))
print('\n')
# ['label' 'x_com' 'y_com' 'z_com' 'time' 'mean' 'std' 'min' 'max']
print(
df_stats.to_string(
formatters={
'label': '{:,.0f}'.format,
'time': '{:,.0f}'.format,
'mean': '{:,.3f}'.format,
'std': '{:,.3f}'.format,
'min': '{:,.3f}'.format,
'max': '{:,.3f}'.format,
'x_com': '{:,.0f}'.format,
'y_com': '{:,.0f}'.format,
'z_com': '{:,.0f}'.format
}))
print('\n')
return df_stats
def properties(in_label_nii_filename, label_list, background, stats, out_filename, limits_volume_voxels=[0, numpy.inf],
limits_bb_volume_voxels=[0, numpy.inf], limits_fill_factor=[0,1], sort='volume',
verbose=False, verbose_nlines=20):
label_nii = labels.read_nifti_file( in_label_nii_filename, 'labels.properties.py: Label file does not exist. ')
single_voxel_volume_mm3 = query_voxel_volume_mm3( label_nii )
label_array = label_nii.get_data()
label_list = labels.get_labels(label_list, label_array, background)
df_stats = pd.DataFrame(columns=(
'label', 'volume_voxels', 'volume_mm3', 'com_x', 'com_y', 'com_z', 'com_t', 'com_in', 'bb_dx', 'bb_dy', 'bb_dz', 'bb_dt', 'bb_dmin', 'bb_volume_voxels',
'fill_factor'))
stats_list = ['label', ] + list(stats)
if verbose:
jj = 0
pd.set_option('expand_frame_repr', False)
for ii in label_list:
# Create logical mask
mask = (label_array == ii)
ndim = len(mask.shape)
# Calculate Volume
label_volume_voxels = int(numpy.sum(mask))
label_volume_mm3 = single_voxel_volume_mm3 * label_volume_voxels
if check_limits(label_volume_voxels, limits_volume_voxels):
bb_dx, bb_dy, bb_dz, bb_dt, bb_dmin, bb_volume_voxels = calculate_bounding_box(mask)
if check_limits(bb_volume_voxels, limits_bb_volume_voxels):
label_x_com, label_y_com, label_z_com, label_t_com = calculate_center_of_mass(mask)
if ndim == 4:
label_com_in = mask[label_x_com, label_y_com, label_z_com, label_t_com]
elif ndim==3:
label_t_com = 0
label_com_in = mask[label_x_com, label_y_com, label_z_com]
else:
label_z_com = label_t_com = 0
label_com_in = mask[label_x_com, label_y_com]
fill_factor = label_volume_voxels / bb_volume_voxels
if check_limits(fill_factor, limits_fill_factor):
label_stats = [ii, label_volume_voxels, label_volume_mm3, label_x_com, label_y_com, label_z_com, label_t_com, label_com_in, bb_dx, bb_dy,
bb_dz, bb_dt, bb_dmin, bb_volume_voxels, fill_factor]
df_stats.loc[len(df_stats)] = label_stats
if verbose:
if jj == (verbose_nlines - 1):
print('\n')
df_verbose = df_stats.tail(verbose_nlines)
df_verbose = df_verbose[stats_list]
print(df_verbose.to_string(
formatters={'volume_voxels': '{:,.0f}'.format, 'volume_mm3': '{:,.3f}'.format,
'com_x': '{:,.0f}'.format,
'com_y': '{:,.0f}'.format, 'com_z': '{:,.0f}'.format,
'com_t': '{:,.0f}'.format,
'com_in': '{:,.0f}'.format, 'bb_dx': '{:,.0f}'.format,
'bb_dy': '{:,.0f}'.format, 'bb_dz': '{:,.0f}'.format, 'bb_dt': '{:,.0f}'.format,
'bb_volume_voxels': '{:,.0f}'.format,
'fill_factor': '{:,.3f}'.format
}
))
jj = 0
else:
jj += 1
df_sorted = df_stats.sort_values([sort], ascending=[1]).reset_index(drop=True)
if verbose:
print('\n')
print(df_sorted[stats_list])
print('\n')
if not out_filename == None:
df_sorted[stats_list].to_csv(out_filename, index=False)
