利用sitk对影像文件进行翻转

mask = sitk.ReadImage(mask_path)  # type: sitk.Image
# mask.SetDirection((1,0,0,0,-1,0,0,0,1))   
mask = sitk.Flip(mask, sitk.VectorBool([False,True,False]))  #沿y轴翻转
output_path = os.path.join(os.getcwd(), 'test_direction.nii')
sitk.WriteImage(mask, output_path)