def get_data_array(data_dir, new_shape, shuffle=False,unlabeled=False):
path_array = glob.glob(f"{data_dir}/*")
if shuffle:
np.random.shuffle(path_array)
nr_imgs = len(path_array)
old_shape = (86,333,271)
factor = (new_shape[0]/old_shape[0],new_shape[1]/old_shape[1],new_shape[2]/old_shape[2])
img_dim = (nr_imgs,round(factor[0]*old_shape[0]),round(factor[1]*old_shape[1]),
round(factor[2]*old_shape[2]))
data_array = np.zeros(img_dim)
label_array = np.zeros(img_dim)
for i, path in enumerate(path_array):
mr_img = GetArrayFromImage(ReadImage(f"{path}/mr_bffe.mhd"))
data_array[i] = zoom(mr_img,zoom=factor,order=1)
if unlabeled==False:
seg = GetArrayFromImage(ReadImage(f"{path}/prostaat.mhd"))
label_array[i] = zoom(seg,zoom=factor,order=1)
data_array = np.expand_dims(data_array,1)
if unlabeled==False:
label_array = np.expand_dims(label_array,1)
return data_array, label_array
else:
return data_array
def read_dcm(names, raw=False):
if raw:
img = ReadImage(names)
else:
names = ImageSeriesReader_GetGDCMSeriesFileNames(names)
img = ReadImage(names)
return img
def get_pretrain_data(data_dir, new_shape):
nr_imgs = 50
#old_shape = (86,333,271)
# img_dim = (nr_imgs,round(factor[0]*old_shape[0]),round(factor[1]*old_shape[1]),
# round(factor[2]*old_shape[2]))
img_dim = (nr_imgs,new_shape[0],new_shape[1],new_shape[2])
data_array = np.zeros(img_dim)
label_array = np.zeros(img_dim)
for i in range(nr_imgs):
subj_str = f"{data_dir}/Case{i:02d}"
mr_img = GetArrayFromImage(ReadImage(subj_str+".mhd"))
old_shape = mr_img.shape
factor = (new_shape[0]/old_shape[0],new_shape[1]/old_shape[1],new_shape[2]/old_shape[2])
data_array[i] = zoom(mr_img,zoom=factor,order=1)
seg = GetArrayFromImage(ReadImage(subj_str+"_segmentation.mhd"))
label_array[i] = zoom(seg,zoom=factor,order=1)
data_array = np.expand_dims(data_array,1)
label_array = np.expand_dims(label_array,1)
return data_array, label_array
def get_data_array(data_dir, shuffle=False):
path_array = glob.glob(f"{data_dir}/*")
if shuffle:
np.random.shuffle(path_array)
nr_imgs = len(path_array)
data_array = np.zeros((nr_imgs, 86, 333, 271))
label_array = np.zeros((nr_imgs, 86, 333, 271))
for i, path in enumerate(path_array):
data_array[i] = GetArrayFromImage(ReadImage(f"{path}/mr_bffe.mhd"))
label_array[i] = GetArrayFromImage(ReadImage(f"{path}/prostaat.mhd"))
return data_array, label_array
def get_pretraining_data(input_pretraining_dir, input_sample_shape=(16, 80, 64)):
nr_imgs = 50
full_shape = tuple([nr_imgs] + list(input_sample_shape))
resized_mr_imgs = np.zeros(full_shape)
resized_seg_imgs = np.zeros(full_shape)
for i in range(nr_imgs):
full_mr_img = GetArrayFromImage(ReadImage(f"{input_pretraining_dir}/Case{i:02}.mhd"))
full_seg_img = GetArrayFromImage(ReadImage(f"{input_pretraining_dir}/Case{i:02}_segmentation.mhd"))
full_img_shape = full_mr_img.shape
zoom_factor = (input_sample_shape[0] / full_img_shape[0], input_sample_shape[1] / full_img_shape[1], input_sample_shape[2] / full_img_shape[2])
resized_mr_imgs[i] = zoom(full_mr_img, zoom_factor, order=1)
resized_seg_imgs[i] = zoom(full_seg_img, zoom_factor, order=1)
return resized_mr_imgs, resized_seg_imgs
def load(path: PathLike, **kwargs):
"""
Load a file located at ``path``.
``kwargs`` are format-specific keyword arguments.
The following extensions are supported:
npy, tif, hdr, img, nii, nii.gz, json, mhd, csv, txt, pickle, pkl
"""
name = Path(path).name
if name.endswith('.npy'):
return load_numpy(path, **kwargs)
if name.endswith(('.nii', '.nii.gz', '.hdr', '.img')):
import nibabel as nib
return nib.load(path, **kwargs).get_data()
if name.endswith(('.png', '.jpg', '.tif')):
from imageio import imread
return imread(path, **kwargs)
if name.endswith('.json'):
return load_json(path, **kwargs)
if name.endswith('.csv'):
return pd.read_csv(path, **kwargs)
if name.endswith(('.pkl', '.pickle')):
return load_pickle(path, **kwargs)
if name.endswith('.txt'):
with open(path, mode='r', **kwargs) as file:
return file.read()
if name.endswith('.mhd'):
from SimpleITK import ReadImage
return ReadImage(name, **kwargs)
raise ValueError(f'Couldn\'t read file "{path}". Unknown extension.')
def _binshrink(img_dir, scale_factor, outpath):
"""
Shrink the image by an integer factor. Confirmed only on even-dimension images currently. May need to add
padding. This is working!
Produces almost exactly sane output as CV2 method but seems to round 0.5 values down to 0
:param scale_factor:
:return:
"""
print('scaling by int')
img_path_list = get_img_paths(img_dir)
last_img_index = 0
z_chuncks = []
scale_factor = int(1/ scale_factor)
for i in range(scale_factor, len(img_path_list) + scale_factor, scale_factor):
slice_paths = [x for x in img_path_list[last_img_index: i + 1]]
slice_imgs = ReadImage(slice_paths)
z_chuncks.append(BinShrink(slice_imgs, [scale_factor, scale_factor, scale_factor]))
last_img_index = i
first_chunk = True
for j in z_chuncks:
array = GetArrayFromImage(j)
if first_chunk:
assembled = array
first_chunk = False
else:
assembled = np.vstack((assembled, array))
#Write the image
imgout = GetImageFromArray(assembled)
WriteImage(imgout, outpath)
def get_transformed_image(input_fixed_img,
input_moving_img,
img_type="pros",
iteration=max_iteration):
temp_dir = f"{IMAGES_PATH}/{input_fixed_img}-{input_moving_img}"
image_path = f"{temp_dir}/{iteration}/{img_type}/result.mhd"
return GetArrayFromImage(ReadImage(image_path))
def get_images(input_img_paths, input_transform):
print("results", end=" ", flush=True)
fixed_mr_img = GetArrayFromImage(ReadImage(input_img_paths[0]))
moving_mr_img = GetArrayFromImage(ReadImage(input_img_paths[1]))
fixed_pros_img = GetArrayFromImage(ReadImage(input_img_paths[2]))
moving_pros_img = GetArrayFromImage(ReadImage(input_img_paths[3]))
transformed_moving_mr_img = transform_img(input_img_paths[1],
input_transform)
transformed_moving_pros_img = transform_img(input_img_paths[3],
input_transform)
jacobian_determinant_img = get_determinant_img(input_transform)
return np.array([
fixed_mr_img, fixed_pros_img, moving_mr_img, moving_pros_img,
transformed_moving_mr_img, transformed_moving_pros_img,
jacobian_determinant_img, (jacobian_determinant_img < 0) * 255
])
def read_nrrd(file_name):
'''
读取nrrd体数据文件
:param file_name:nrrd文件路径
:return:nd-array，(z,y,x)
'''
img = ReadImage(file_name)
return GetArrayFromImage(img)
def read_VTK(file_name):
'''
读取VTK体数据文件
:param file_name:VTK文件路径
:return:nd-array，(z,y,x)
'''
img = ReadImage(file_name)
return GetArrayFromImage(img)
def load(*, fname: Path) -> Dict:
try:
img = ReadImage(str(fname))
except RuntimeError:
raise FileLoaderError(f"Could not load {fname} using {__name__}.")
return {
"img": img,
"path": fname,
}
def auto_bounding_box(self, filelist):
self.callback("Determining crop bounding box")
z_proj_path = os.path.join(self.configOb.meta_path,
"max_intensity_z.png")
# Start with a z-projection
zp = zproject.Zproject(filelist, z_proj_path, force=True)
zp.update.connect(self.update_slot)
zp.run_onthisthread()
zp_im = ReadImage(z_proj_path)
reader = Imreader(filelist)
try:
testimg = reader.imread(filelist[0])
except IOError as e:
raise HarpDataError('Failed to read {}. Is it corrupt'.format(
filelist[0]))
datatype = testimg.dtype
if datatype is np.uint16:
outval = 65535
else:
outval = 255
# Apply otsu threshold and remove all but largest component
seg = OtsuThreshold(zp_im, 0, outval, 128)
seg = ConnectedComponent(seg) # label non-background pixels
seg = RelabelComponent(
seg) # relabel components in order of ascending size
# seg = seg == 1 # discard all but largest component
# Get bounding box
label_stats = LabelStatisticsImageFilter()
label_stats.Execute(zp_im, seg)
bbox = list(
label_stats.GetBoundingBox(1)) # xmin, xmax, ymin, ymax (I think)
# Padding
self.imdims = testimg.shape
padding = int(np.mean(self.imdims) * 0.04)
bbox = self.pad_bounding_box(bbox, padding)
# Callback!
self.callback(tuple(bbox))
# Crop the z-projection and write to metadata
zp_arr = GetArrayFromImage(zp_im)
zp_crop = GetImageFromArray(zp_arr[bbox[2]:bbox[3], bbox[0]:bbox[1]])
WriteImage(zp_crop,
os.path.join(self.configOb.meta_path, "crop_result.png"))
return bbox
def load_itk(filename):
"""
This function reads a '.mhd' file using SimpleITK
and return the image array, origin and spacing of the image.
"""
# Reads the image using SimpleITK
itk_image = ReadImage(filename)
# Convert the image to a numpy array first and then
# shuffle the dimensions to get axis in the order z,y,x
ct_scan = GetArrayFromImage(itk_image)
# Read the origin of the ct_scan, will be used to convert
# the coordinates from world to voxel and vice versa.
origin = np.array(list(reversed(itk_image.GetOrigin())))
# Read the spacing along each dimension
spacing = np.array(list(reversed(itk_image.GetSpacing())))
return ct_scan, origin, spacing
def openfiles(self):
if self.file_path == "":
return
if self.name == "":
if "T2" in self.file_path.split("/")[-1]:
self.name = "T2"
if "LGE" in self.file_path.split("/")[-1]:
self.name = "LGE"
if "C0" in self.file_path.split("/")[-1]:
self.name = "C0"
if self.name == "":
self.name = "C0"
itk_img = ReadImage(self.file_path)
img = GetArrayFromImage(itk_img)
self.spacing = itk_img.GetSpacing()
self.direction = itk_img.GetDirection()
# print("img:", self.file_path, "direction:", self.direction)
self.origin = itk_img.GetOrigin()
minDim = list(img.shape).index(min(img.shape))
if minDim == 0:
self.img = np.zeros((img.shape[1], img.shape[2], min(img.shape)))
for i in range(min(img.shape)):
self.img[:, :, i] = self.showRoate(img[i, :, :])
if minDim == 1:
self.img = np.zeros((img.shape[0], img.shape[2], min(img.shape)))
for i in range(min(img.shape)):
self.img[:, :, i] = img[:, i, :]
if minDim == 2:
self.img = img
self.imgDim = self.img.shape[2]
if self.imgDim >= 3:
self.imgIndex = int(self.imgDim / 2 + 1)
else:
self.imgIndex = int(self.imgDim / 2)
self.adjusted = False
self.predicted = False
self.isOpen = True
def show_slices(input_fixed_img_name,
input_moving_img_name,
input_slice_nr=40,
save=True):
if save:
temp_path = f"{RESULTS_PATH}/slices/{input_fixed_img_name}-{input_moving_img_name}"
if not os.path.exists(temp_path):
os.mkdir(temp_path)
temp_path = f"{temp_path}/{input_slice_nr}"
if not os.path.exists(temp_path):
os.mkdir(temp_path)
bits = 11
fixed_mr_img_slice = GetArrayFromImage(
ReadImage(f"{DATA_PATH}/{input_fixed_img_name}/mr_bffe.mhd"))[
input_slice_nr, :, :] / 2**bits * 255
fixed_pros_img_slice = GetArrayFromImage(
ReadImage(f"{DATA_PATH}/{input_fixed_img_name}/prostaat.mhd"))[
input_slice_nr, :, :] * 255
moving_mr_img_slice = GetArrayFromImage(
ReadImage(f"{DATA_PATH}/{input_moving_img_name}/mr_bffe.mhd"))[
input_slice_nr, :, :] / 2**bits * 255
moving_pros_img_slice = GetArrayFromImage(
ReadImage(f"{DATA_PATH}/{input_moving_img_name}/prostaat.mhd"))[
input_slice_nr, :, :] * 255
# transformed_moving_mr_img_slice = GetArrayFromImage(ReadImage(f"{IMAGES_PATH}/{fixed_img_name}-{moving_img_name}/2/mr/result.mhd"))[input_slice_nr, :, :] / 2 ** bits * 255
# transformed_moving_pros_img_slice = GetArrayFromImage(ReadImage(f"{IMAGES_PATH}/{fixed_img_name}-{moving_img_name}/2/pros/result.mhd"))[input_slice_nr, :, :] * 255
for i, img_slice in enumerate(
[
fixed_mr_img_slice, fixed_pros_img_slice, moving_mr_img_slice,
moving_pros_img_slice
]
): #, transformed_moving_mr_img_slice, transformed_moving_pros_img_slice]):
if save:
show_image_save(
img_slice,
f"{temp_path}/{names[i]}_{input_fixed_img_name}_{input_moving_img_name}_{input_slice_nr}.png"
)
else:
show_image_save(img_slice)
def get_data_array(data_dir, new_shape):
path_array = glob.glob(f"{data_dir}/*")
nr_imgs = len(path_array)
old_shape = (86,333,271)
factor = (new_shape[0]/old_shape[0],new_shape[1]/old_shape[1],new_shape[2]/old_shape[2])
img_dim = (nr_imgs,round(factor[0]*old_shape[0]),round(factor[1]*old_shape[1]),
round(factor[2]*old_shape[2]))
data_array = np.zeros(img_dim)
if ranking==False:
label_array = np.zeros((nr_imgs,old_shape[0],old_shape[1],old_shape[2]))
for i, path in enumerate(path_array):
mr_img = GetArrayFromImage(ReadImage(f"{path}/mr_bffe.mhd"))
data_array[i] = zoom(mr_img,zoom=factor,order=1)
if ranking==False:
label_array[i] = GetArrayFromImage(ReadImage(f"{path}/prostaat.mhd"))
data_array = np.expand_dims(data_array,1)
if ranking==False:
return data_array, label_array
elif ranking==True:
return data_array
def read_dicom(path, label=False):
name = ImageSeriesReader_GetGDCMSeriesFileNames(path)
img = ReadImage(name)
if label:
arr = GetArrayFromImage(img)
arr = arr > 2000
else:
img = sitk.Cast(img, sitk.sitkFloat32)
img = sitk.IntensityWindowing(img, -1024, 1024, 0.0, 1.0)
# WriteImage(img, 'test.vtk')
arr = GetArrayFromImage(img)
arr = arr[..., np.newaxis]
print(arr.shape)
return arr
def get_results(input_img_paths, input_transform):
print("results", end=" ", flush=True)
fixed_mr_img = GetArrayFromImage(ReadImage(input_img_paths[0]))
moving_mr_img = GetArrayFromImage(ReadImage(input_img_paths[1]))
transformed_moving_mr_img = transform_img(input_img_paths[1],
input_transform)
fixed_pros_img = GetArrayFromImage(ReadImage(input_img_paths[2]))
moving_pros_img = GetArrayFromImage(ReadImage(input_img_paths[3]))
transformed_moving_pros_img = transform_img(input_img_paths[3],
input_transform)
before_dice = dice(fixed_pros_img, moving_pros_img)
after_dice = dice(fixed_pros_img, transformed_moving_pros_img)
score_string = f"{fixed_img_name}\t{moving_img_name}\t{before_dice}\t"
for func in [nmi, ncc, msd]:
score_string += str(func(fixed_mr_img, moving_mr_img)) + "\t"
score_string += f"\t{after_dice}\t"
for func in [nmi, ncc, msd]:
score_string += str(func(fixed_mr_img,
transformed_moving_mr_img)) + "\t"
score_string += "\t" + str(time.time() - total_begin_time)
print(score_string, end=" ", flush=True)
return score_string
def readNucleiSegCountSingle(imgOutputDir):
assert os.path.isdir(imgOutputDir), 'Output Directory {} not found'.format(
imgOutputDir)
imgPrefix = os.path.split(imgOutputDir)[1]
labelImgFN = os.path.join(imgOutputDir, imgPrefix + '.tif')
assert os.path.isfile(labelImgFN), 'Label image {} not found'.format(
labelImgFN)
labelImg = ReadImage(labelImgFN)
lsif = LabelShapeStatisticsImageFilter()
lsif.Execute(labelImg)
return lsif.GetNumberOfLabels()
def lung_segment(path, model_path):
name = ImageSeriesReader_GetGDCMSeriesFileNames(path)
raw = ReadImage(name)
raw = sitk.Cast(raw, sitk.sitkFloat32)
raw = sitk.IntensityWindowing(raw, -1024, 1024, 0, 1.0)
arr = GetArrayFromImage(raw)
prediction = np.zeros_like(arr)
arr = arr[..., np.newaxis]
net = unet.Unet(layers=3,
features_root=32,
channels=1,
n_class=2,
summaries=False)
pre = net.predict(model_path, arr, 4)
pre = np.argmax(pre, -1)
prediction[:, 20:492, 20:492] = pre
stride = 50
index = None
for z in range(0, prediction.shape[0], stride):
for y in range(154, prediction.shape[1], stride):
for x in range(105, prediction.shape[2], stride):
patch = prediction[z:z + stride, y:y + stride, x:x + stride]
ratio = patch.mean()
if ratio > 0.95:
index = [z + stride // 2, y + stride // 2, x + stride // 2]
break
if index:
break
if index:
break
index.reverse()
# print(index)
prediction = sitk.GetImageFromArray(prediction)
prediction.CopyInformation(raw)
prediction = sitk.Cast(prediction, sitk.sitkUInt8)
prediction = sitk.ConnectedThreshold(prediction, [index], 1, 1, 1)
return prediction
def readdcmfile(filename):
"""
This function used to read information from dicom file.
Input:
filename: file path to dicom file.
Returns:
spacing, machine, image_array, shape
Note.: SimpleITK read image in the order of z-y-x, namely the number of slice-width-height;
However,SimpleITK read origin and spacing in the order of x-y-z.
"""
image = ReadImage(filename)
machine = image.GetMetaData('0008|0070')
manufacturer_model_name = image.GetMetaData('0008|1090')
image_array = GetArrayFromImage(image) # in the order of z, y, x
shape = image.GetSize()
# origin = image.GetOrigin() # in the order of x, y, z
spacing = image.GetSpacing() # in the order of x, y, z
return spacing, machine, manufacturer_model_name, image_array, shape
def get_original_image(input_image, img_type="prostaat"):
image_path = f"{DATA_PATH}/{input_image}/{img_type}.mhd"
return GetArrayFromImage(ReadImage(image_path))
def load_image(fname):
return ReadImage(str(fname))
def load_scan(path):
slices = [ReadImage(os.path.join(path, s)) for s in os.listdir(path)]
slices.sort(key=lambda x: float(x.GetMetaData('0020|1041')))
scan = [GetArrayFromImage(slice)[0] for slice in slices]
return np.array(scan)
def transform_img(img_path, output_dir, transformix_object):
transformed_path = transformix_object.transform_image(
img_path, output_dir=output_dir, verbose=False)
transformed_img = GetArrayFromImage(ReadImage(transformed_path))
return transformed_img
# param_file_names = ["fast"]
param_file_names = ["translation", "affine", "parameters_test"]
param_array = get_param_array(param_file_names)
########################################################################################################################
regs = ['registration Dice ' + dirs[i] for i in range(len(dirs))]
regs.append('average registration Dice')
ress = ['resulting Dice ' + dirs[i] for i in range(len(dirs))]
ress.append('average resulting Dice')
columns = (['Fixed image (patient)'] + regs + ress +
['Registration Dice Majority Vote'])
frame = pd.DataFrame(columns=columns)
sh = np.shape(
GetArrayFromImage(ReadImage(os.path.join(data_dir, dirs[0],
'mr_bffe.mhd'))))
prostate_estm = np.zeros((sh[0], sh[1], sh[2], len(dirs)))
for idx, pat in enumerate(dirs): #over patient
prostates_estm_pat = np.zeros((sh[0], sh[1], sh[2], len(dirs) - 1))
dices = np.zeros((2 * len(dirs) + 3, 1))
j = 0
mask = np.ones((len(dirs), 1), dtype=bool)
for i in range(len(dirs)): #leave one out over the atlases
if dirs[i] != pat: #not register patient to itself
results_dir = os.path.join(results_dir_start, pat + '_' + dirs[i])
if not os.path.exists(results_dir):
os.mkdir(results_dir)
pat_pros, before_dice, dice = run_all(pat, dirs[i], False, False)
prostates_estm_pat[:, :, :, j] = pat_pros
dices[i] = before_dice
dices[i + len(dirs) + 1] = dice
def resample(sel, old_image_path, datatype='series'):
"""
Usage: resample(sel, old_image_path)
Resample a 3D old_image to given new spacing
The new voxel spacing will determine the new old_image dimensions.
interpolation选项 所用的插值方法
INTER_NEAREST 最近邻插值
INTER_LINEAR 双线性插值（默认设置）
INTER_AREA 使用像素区域关系进行重采样。 它可能是图像抽取的首选方法，因为它会产生无云纹理的结果。 但是当图像缩放时，它类似于INTER_NEAREST方法。
INTER_CUBIC 4x4像素邻域的双三次插值
INTER_LANCZOS4 8x8像素邻域的Lanczos插值
"""
# read dicom series
if datatype == 'series':
reader = ImageSeriesReader()
dicom_names = reader.GetGDCMSeriesFileNames(old_image_path)
reader.SetFileNames(dicom_names)
reader.MetaDataDictionaryArrayUpdateOn()
reader.LoadPrivateTagsOn()
series_ids = reader.GetGDCMSeriesIDs(
old_image_path) # get all series id
series_file_names = reader.GetGDCMSeriesFileNames(
old_image_path, series_ids[0]) # get the first series
reader.SetFileNames(series_file_names)
old_image = reader.Execute() # type: sitk.Image
elif datatype == 'nii':
# read nifiti file
old_image = ReadImage(old_image_path)
else:
print(f'Datatype {datatype} is wrong!\n')
# get old information and new information
old_spacing = old_image.GetSpacing()
size = old_image.GetSize()
new_size = (np.round(
size * (old_spacing / sel._new_spacing))).astype(int).tolist()
# EXE
# If is orginal data ('series'), use sitk.sitkLinear.
# If is binary mask ('nii'), usse sitk.sitkNearestNeighbor.
# TODO: other methods;
# FIXME: Some cases the 'series' may not indicate the orginal data
# FIXME:Some cases the 'nii' may not indicate the binary mask
if datatype == 'series':
resampled_img = sitk.Resample(old_image, new_size,
sitk.Transform(), sitk.sitkLinear,
old_image.GetOrigin(),
sel._new_spacing,
old_image.GetDirection(), 0.0,
old_image.GetPixelID())
elif datatype == 'nii':
resampled_img = sitk.Resample(old_image, new_size,
sitk.Transform(),
sitk.sitkNearestNeighbor,
old_image.GetOrigin(),
sel._new_spacing,
old_image.GetDirection(), 0.0,
old_image.GetPixelID())
# resampled_img.GetSpacing()
# resampled_img.GetSize()
return resampled_img
def get_transformed_image(input_img_path, input_transform):
transformed_path = input_transform.transform_image(
input_img_path, output_dir=TEMP_RESULTS_PATH, verbose=False)
return GetArrayFromImage(ReadImage(transformed_path))
all_training_image_names = [
"p102", "p107", "p108", "p109", "p113", "p116", "p117", "p119", "p120",
"p123", "p125", "p128", "p129", "p133", "p135"
]
all_validation_image_names = ["p137", "p141", "p143", "p144", "p147"]
param_file_names = ["translation", "affine", "parameters_test"]
param_array = get_param_array(param_file_names)
nr_atlas_images = len(all_training_image_names)
for valid_img_name in all_validation_image_names:
begin_time = time.time()
print(f"{valid_img_name} |", end="\t", flush=True)
valid_img_path = f"{VALIDATION_DATA_PATH}/{valid_img_name}/mr_bffe.mhd"
valid_img = GetArrayFromImage(ReadImage(valid_img_path))
weights = np.zeros(nr_atlas_images)
predictions = np.zeros((nr_atlas_images, 86, 333, 271))
for i, atlas_img_name in enumerate(all_training_image_names):
print(f"{atlas_img_name}", end="\t", flush=True)
atlas_mr_img_path = f"{TRAINING_DATA_PATH}/{atlas_img_name}/mr_bffe.mhd"
atlas_pros_img_path = f"{TRAINING_DATA_PATH}/{atlas_img_name}/prostaat.mhd"
transform = get_transform(valid_img_path, atlas_mr_img_path)
transformed_atlas_mr_img = get_transformed_image(
atlas_mr_img_path, transform)
predictions[i] = get_transformed_image(atlas_pros_img_path, transform)
weights[i] = metrics.nmi(valid_img, transformed_atlas_mr_img)
weights = (weights - np.min(weights))**2
prediction = np.zeros((86, 333, 271))
for i in range(nr_atlas_images):
prediction += predictions[i] * weights[i]