OpenCV(一)图像的打开与显示

# -*- coding: utf-8 -*-
'''
Created on Thus Oct 5 13:41:30 2017

@author: mckee
'''
import cv2
from matplotlib import pyplot as plt
img = cv2.imread('../sony2.jpg',0)

plt.imshow(img,cmap = 'gray', interpolation = 'bicubic')
'''
arg1: img
arg2: cmap, 一般是None或 gray
arg3: interpolation,插值方法，可使图像平滑。本例使用bicubic双三次插值。
'''
plt.xticks([]), plt.yticks([])   #隐藏xy轴
plt.show()

import cv2

img = cv2.imread('../sony.jpg')

cv2.imshow('image',img)

k = cv2.waitKey(0)&0xFF
if k == 27:
cv2.destroyAllWindows()
elif k == ord('s'):
cv2.imwrite('../123.jpg',img)#保存图片
cv2.destroyAllWindows()