如何将 nift 文件夹转换为 png 图像？

Question

*图书馆

有一个从 NumPy 和 imageio import NumPy as np import os import nibabel as nib import imageio // 方法我写代码将 nift 转换为 png
Method convert a nift(.nii) image to png image def nii_to_image(niifile): filenames = os.listdir(filepath) #read nii folder slice_trans = [] #filename是nii image的路径

  for f in filenames:
                          #Start reading nii files
                   img_path = os.path.join(filepath, f)
                   img = nib.load(img_path) #read nii
                   img_fdata = img.get_fdata()
                   fname = f.replace('.nii','') 
# Remove the nickname of nii
                   img_f_path = os.path.join(imgfile, fname)
                          #Create a folder corresponding to the image of nii
                   if not os.path.exists(img_f_path):
                     os.mkdir(img_f_path) #New folder
          
                          #  to image
                   (x,y,z) = img.shape
                   for i in range(z): #x is the sequence of images
                     silce = img_fdata[i, :, :] #Select which direction the slice can be
                     imageio.imwrite(os.path.join(img_f_path,'{}.png'.format(i)), silce) #Save image
     #main function where fill path was gived
   

主要的

 if __name__ == '__main__':
             filepath = '/content/drive/MyDrive/sem 8/dataset/pr' 
             imgfile = '/content/drive/MyDrive/sem 8/dataset/propi'
             nii_to_image(filepath)

Answer 1

像您一样将 nifti 文件加载为 NumPy 数组后，在每个切片（来自 img.shape 的 z）上运行，然后将数组保存到 png。

确保在每个切片上运行时只保存现有切片（z_slice_number）：

    slice = img_fdata[:, :, z_slice_numer]

要保存此切片，您可以执行以下操作（或此处的其他方式）：

    matplotlib.image.imsave('name.png', slice)