python图片处理

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import cv2
import matplotlib.pyplot as plt

# 1.get image info
image = cv2.imread('image.jpg')
print 'width: %d' % image.shape[1]
print 'height: %d' % image.shape[0]
print 'channel: %d' % image.shape[2]

# 2.show image
plt.imshow(image)
plt.axis('off')
plt.show()

# 3.data convert
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
plt.imshow(image)
plt.axis('off')
plt.show()

# 4.save image
cv2.imwrite('new_image.jpg', image)