Question

版本

Python 3.5.2
opencv 4.0.0-alpha

问题

程序最初执行非常平稳，但是大约5分钟后，fps急剧下降。根据每条代码行的执行时间，它似乎在更新映像中消失了。

请帮助我修复此错误

from tkinter import *
from random import *
import PIL.Image, PIL.ImageTk
import time
import cv2
import threading
camera = cv2.VideoCapture(0)
speed = ""
def clear():
    global exit
    while True:
        success, photo = camera.read()
        cv2.waitKey(250)
        if(exit):
            break
window = Tk()
imageFrame = Frame(window, width=600, height=500)
imageFrame.grid(row=0, column=0, padx=10, pady=2)
lmain = Label(imageFrame)
lmain.grid(row=0, column=0)
start = 0
while True:
    lmain.configure(image='')
    lmain.image = ''
    speed = ""
    start = time.time()
    success ,photo = camera.read()
    speed = speed + (str)((int)((time.time()-start)*1000))
    speed = speed + "ms   "
    cv2image = cv2.cvtColor(photo, cv2.COLOR_BGR2RGB)
    speed = speed + (str)((int)((time.time()-start)*1000))
    speed = speed + "ms   "
    img = PIL.Image.fromarray(cv2image)
    speed = speed + (str)((int)((time.time()-start)*1000))
    speed = speed + "ms   "
    imgtk = PIL.ImageTk.PhotoImage(image=img)
    speed = speed + (str)((int)((time.time()-start)*1000))
    speed = speed + "ms   "
    lmain.configure(image=imgtk)
    lmain.image = imgtk
    speed = speed + (str)((int)((time.time()-start)*1000))
    speed = speed + "ms   "
    window.update()
    speed = speed + (str)((int)((time.time()-start)*1000))
    speed = speed + "ms   "
    print("Result: " + (str)(speed))
    fps = (int)((1000/(time.time()-start))/1000)
    print("FPS: " + str(fps))

Python Tkinter Opencv长时间刷新caneram后会很慢

0 个答案: