opencv打开电脑摄像头【附源码】

打开摄像头

源码

import cv2
import numpy
import matplotlib.pyplot as plot

cap=cv2.VideoCapture(0)

while(1):
    ret,frame = cap.read()
    cv2.imshow("capture",frame)
    if(cv2.waitKey(1) & 0xFF==ord('q')):
        break
cap.release()
cv2.destroyAllWindows()

效果

摄像头图像轮廓化

源码

import cv2
cap = cv2.VideoCapture(0)
i=0
while(1):
    ret, frame = cap.read()
    img_gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    img_gb = cv2.GaussianBlur(img_gray, (5, 5), 0)
    edges = cv2.Canny(img_gb, 100 , 200)
    cv2.imshow("capture", edges)
    if cv2.waitKey(1) & 0xFF == ord('q'):       
        break
cap.release()
cv2.destroyAllWindows()

效果

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