SimpleITK 变换后的白点

如何解决SimpleITK 变换后的白点

我正在使用 SimpleITK 对 3d 扫描进行多次转换。转换完成后，我会得到白点（见下图）。希望有人可以帮助解释原因，也许可以帮助我摆脱这些文物。如果您需要更多信息，请告诉我。

def resample(image,transform):
  """
  This function resamples (updates) an image using a specified transform
  :param image: The sitk image we are trying to transform
  :param transform: An sitk transform (ex. resizing,rotation,etc.
  :return: The transformed sitk image
  """
  reference_image = image
  interpolator = sitk.sitkBSpline
  default_value = 0
  return sitk.Resample(image,reference_image,transform,interpolator,default_value)

def get_center(img):
  """
  This function returns the physical center point of a 3d sitk image
  :param img: The sitk image we are trying to find the center of
  :return: The physical center point of the image
  """
  width,height,depth = img.GetSize()
  return img.TransformIndexToPhysicalPoint((int(np.ceil(width/2)),int(np.ceil(height/2)),int(np.ceil(depth/2))))


translation = sitk.TranslationTransform(3,[x_trans,y_trans,z_trans])
image_center = get_center(brain_img)
euler_transform = sitk.Euler3DTransform(image_center,theta_x,theta_y,theta_z,(0,0))
euler_transform.SetCenter(image_center)
euler_transform.SetRotation(theta_x,theta_z)
tx=sitk.CompositeTransform([euler_transform,translation])
resampled_image = resample(brain_img,tx)

右边是原图，左边是新图。