1.图像，视频的加载，保存

import cv2 as cv

def video_demo():
    capture=cv.VideoCapture()
    while(True):
        ret,frame=capture.read()
        frame=cv.flip(frame,1) #图像翻转
        cv.imshow('video',frame)
        c=cv.waitKey(50)
        if c==27:
            break


def get_image_info(image):
    print(type(image))
    print(image.shape)
    print(image.size)
    print(image.dtype)
    print(image)


src=cv.imread('D:/pycharm/pycharmproject/test.jpg')#src是numpy.ndarray类型
cv.imshow('src',src)
get_image_info(src)
# video_demo()
cv.waitKey()
cv.destroyAllWindows()