bigcindy的博客

导入所需的库import cv2import numpy as npimport matplotlib.pyplot as pltfor i in [cv2, np]: print(i.__name__,": ",i.__version__,sep="")输出：cv2.cv2: 4.2.0numpy: 1.17.4# 定义图像显示函数def showImages(original, processed): plt.figure(figsize=(10,5))

导入所需的库import cv2import numpy as npimport matplotlib.pyplot as pltfor i in [cv2, np]: print(i.__name__,": ",i.__version__,sep="")输出：cv2.cv2: 4.2.0numpy: 1.17.4# 定义图像显示函数def showImages(original, processed): plt.figure(figsize=(10,5))

9. 图像的基础操作import cv2import numpy as npimport matplotlib.pyplot as pltfor i in [cv2, np]: print(i.__name__,": ",i.__version__,sep="")输出：cv2.cv2: 4.2.0numpy: 1.17.4# 定义显示图片函数def showImage(img): plt.figure() plt.imshow(img) pl

4. 图片学习函数：cv2.imread(), cv2.imshow(), cv2.imwrite()4.1 读入图像import numpy as npimport cv2%matplotlib inlineprint(np.__version__)print(cv2.__version__)img = cv2.imread("messi5.jpg", 0) # 以灰度模式读入图片输出：1.17.44.2.0注意：如果图像的路径是错的，OpenCV也不会有任何报