图像单通道转三通道

from PIL import Image
import numpy as np
import matplotlib.pyplot as plt
import torchvision.transforms as transforms
import os
os.environ['KMP_DUPLICATE_LIB_OK'] = 'True'

image=Image.open('00000.jpg').convert('L')
print(image.size)
plt.subplot(1,2,1)
plt.title("origin")
plt.imshow(image)

image = np.array(image)
print(image.shape)

image = np.expand_dims(image,axis=2)
print(image.shape)

image = np.concatenate((image, image, image), axis=-1)
print(image.shape)

image = Image.fromarray(image.astype('uint8')).convert('L')
print(image.size)
plt.subplot(1, 2, 2)
plt.title("change")
plt.imshow(image)
plt.show()

标签：plt,image,转三,np,图像,print,import,Image,单通道
来源： https://blog.csdn.net/weixin_44311020/article/details/121888186