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  • python opencv 处理文件、摄像头、图形化界面

    转换成RGB

    import cv2
    import numpy as ny
    img = ny.zeros( ( 3 , 3 ),ny.float32)
    img=cv2.cvtColor(img,cv2.COLOR_BGR2RGB)
    print(img)
    

    将jpg装成png

    import cv2
    image=cv2.imread('C:/Users/Albert/PycharmProjects/CVTest/image/1.jpg')
    cv2.imwrite('C:/Users/Albert/PycharmProjects/CVTest/image/1.png',image)
    

    读入灰度图像

    import cv2
    image=cv2.imread('C:/Users/Albert/PycharmProjects/CVTest/image/1.jpg',cv2.IMREAD_GRAYSCALE)
    cv2.imwrite('C:/Users/Albert/PycharmProjects/CVTest/image/11.png',image)
    

    图像的相对路径是指python脚本所在的文件夹

    B、G、R

    将图像的绿色通道设置为0

    import cv2
    image=cv2.imread('C:/Users/Albert/PycharmProjects/CVTest/image/1.jpg')
    image[:,:,1]=0
    cv2.imshow('a',image)
    cv2.waitKey(0)

    图像基本属性

    import cv2
    image=cv2.imread('C:/Users/Albert/PycharmProjects/CVTest/image/1.jpg')
    print(image.shape)
    print(image.size)
    print(image.dtype)
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  • 原文地址:https://www.cnblogs.com/albert67/p/10645987.html
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