基于python读取图像的几种方式汇总_python_

pip install pillow pip install scikit-image pip install matplotlib pip install opencv-python pip install numpy scipy scikit-learn 

from PIL import Image 

img_path = './test.png' 

img = Image.open(img_path) 

img 

img.mode

'RGB'

img_g = img.convert('L')

img_g.mode

'L'

img_g.save('./test_gray.png')

img_c = img.crop((100,50,200,150))img_c

img.rotate(45)

from PIL import ImageDraw, ImageFont draw = ImageDraw.Draw(img) font = ImageFont.truetype('/home/fsf/Fonts/ariali.ttf',size=24) draw.text((10,5), "This is a picture of sunspot.", font=font) del draw img 

import cv2

img = cv2.imread('./test.png')

img.min(), img.max()

(0, 255)

import matplotlib.pyplot as plt plt.imshow(img) plt.axis('off') plt.show() 

import matplotlib.image as mpimg

img = mpimg.imread('./test.png')

img.min(),img.max()

(0.0, 1.0)

import matplotlib.pyplot as plt plt.imshow(img,interpolation='spline16') plt.axis('off') plt.show() 

from skimage.io import imread, imsave, imshow

img = imread('./test.png')

img.min(), img.max()

(0, 255)

import matplotlib.pyplot as plt plt.imshow(img,interpolation='spline16') plt.axis('off') plt.show() 

import imageio

img = imageio.imread('./test.png')

img.min(), img.max()

(0, 255)

import matplotlib.pyplot as plt plt.imshow(img,interpolation='spline16') plt.axis('off') plt.show()