【AI基礎】python：opencv

2018-03-02

好的開始 就意味着成功了一半。

pip install opencv-python
Collecting opencv-python
  Downloading opencv_python-3.4.0.12-cp36-cp36m-win_amd64.whl (33.3MB)
    100% |████████████████████████████████| 33.4MB 551kB/s
Requirement already satisfied: numpy>=1.11.3 
in c:\users\xxx\anaconda3\lib\site-packages (from opencv-python)
Installing collected packages: opencv-python
Successfully installed opencv-python-3.4.0.12

讀取顯示一張圖片：

cv2.IMREAD_COLOR（）：讀入彩×××像；
cv2.IMREAD_GRAYSCALE（）：以灰度模式讀入圖像 （同 缺失）

import cv2
import numpy as np
from matplotlib import pyplot as plt

img = cv2.imread('1.jpg',cv2.IMREAD_COLOR)
cv2.namedWindow('image',cv2.WINDOW_NORMAL)
cv2.imshow('image',img)
k = cv2.waitKey(0)
if k==27:
    cv2.destroyAllWindows()
elif k == ord('s'):
    cv2.imwrite('1a.jpg',img)
    cv2.destoryAllWindows()