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import cv2 as cv

import numpy as np #Python科学技术np包

#Numpy数组操作

def video_demo():

capture = cv.VideoCapture(0)

while(True):

ret,frame = capture.read()

frame = cv.flip(frame,1)

cv.imshow('video',frame)

c = cv.waitKey(50)

if(c == 27):

break

def get_image_info(image):

print(type(image))

print(image.size)

print(image.shape)

print(image.dtype)

print(np.array(image)) # 矩阵数组

src = cv.imread("C:/1/1.jpg")

cv.namedWindow('input_image', cv.WINDOW_AUTOSIZE)

cv.imshow('input_image', src)

get_image_info(src)

gray = cv.cvtColor(src,cv.COLOR_BGR2GRAY)

cv.imwrite("C:/1/111.jpg",gray)

cv.waitKey(0)

cv.destroyAllWindows()