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import cv2
import numpy as np
import os #遍历文件夹
import nibabel as nib
import imageio #转换成图像def nii_to_image(filepath,flag="image"):
filenames = os.listdir(filepath)#读取nii文件
slice_trans = []for f in filenames:
#开始读取nii文件
img_path = os.path.join(filepath, f)
img = nib.load(img_path)#读取nii
img_fdata = https://www.it610.com/article/img.get_fdata()
fname = f.replace('.nii', '') #去掉nii的后缀名
img_f_path = os.path.join(newfilepath, fname)
# 创建nii对应图像的文件夹
if not os.path.exists(img_f_path):
os.mkdir(img_f_path)#新建文件夹
if(flag=="image"):
img_fdata=https://www.it610.com/article/(img_fdata-img_fdata.min())/(img_fdata.max()-img_fdata.min())*255
#开始转换图像
(x,y,z) = img.shape
for i in range(z):#是z的图象序列
slice = img_fdata[:, :, i]#选择哪个方向的切片自己决定
print(os.path.join(img_f_path,'{}.png'.format(i)))
cv2.imwrite(os.path.join(img_f_path, '{}.png'.format(i)), slice)if __name__ == '__main__':
oldfilepath = 'D:\FLARE2022\label'#nii文件所在的文件夹路径
newfilepath = 'D:/test/label'#转化后的png文件存放的文件路径
nii_to_image(oldfilepath,"label")
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