实时边缘检测

代码

# coding=gbk
"""
作者：川川
公众号：玩转大数据
@时间  : 2022/3/6 2:01
群：428335755
"""

import cv2

import numpy as np

# 使用摄像头
cap = cv2.VideoCapture(0)

# 循环
while (1):

    # 从摄像头读取帧
    ret, frame = cap.read()

    hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)

    lower_red = np.array([30, 150, 50])
    upper_red = np.array([255, 255, 180])

    mask = cv2.inRange(hsv, lower_red, upper_red)

    res = cv2.bitwise_and(frame, frame, mask=mask)

    # 显示
    cv2.imshow('Original', frame)

    # canny方法

    edges = cv2.Canny(frame, 100, 200)

    cv2.imshow('Edges', edges)

    # 按ESC暂停
    k = cv2.waitKey(5) & 0xFF
    if k == 27:
        break

# 关闭
cap.release()

cv2.destroyAllWindows()

演示