python多线程实现摄像头的调用与录像_Python调用摄像头tkinter显示

编写小程序之前，我们需要安装几个包

程序代码如下：

import cv2

import tkinter as tk

from tkinter import filedialog#文件控件

from PIL import Image, ImageTk#图像控件

import threading#多线程

#---------------创建窗口

window = tk.Tk()

window.title(‘摄像头’)

sw = window.winfo_screenwidth()#获取屏幕宽

sh = window.winfo_screenheight()#获取屏幕高

wx = 600

wh = 800

window.geometry("%dx%d+%d+%d" %(wx,wh,(sw-wx)/2,(sh-wh)/2-100))#窗口至指定位置

canvas = tk.Canvas(window,bg=’#c4c2c2’,height=wh,width=wx)#绘制画布

canvas.pack()

#---------------打开摄像头获取图片

def video_demo():

def cc():

capture = cv2.VideoCapture(0)

while True:

ret, frame = capture.read()#从摄像头读取照片

frame = cv2.flip(frame, 1)#翻转 0:上下颠倒 大于0水平颠倒

cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)

img = Image.fromarray(cv2image)

image_file=ImageTk.PhotoImage(img)

canvas.create_image(0,0,anchor=‘nw’,image=image_file)

t=threading.Thread(target=cc)

t.start()

bt_start = tk.Button(window,text=‘打开摄像头’,height=2,width=15,command=video_demo)

bt_start.place(x=230,y=600)

结果如图