我目前正在尝试为多处理 OpenCV 视频流开发GUI 。下面的代码确实成功地做到了这一点，因为它显示了视频提要和一个“退出”按钮，但是以一种奇怪的方式运行：
- 程序在退出时（通过或通过单击关闭窗口）在（我正在使用 Windows）中引发运行时错误，说程序“请求运行时以不寻常的方式终止”
pythonw.exequit button'X'
任何关于如何解决该问题的想法将不胜感激！
我的代码：
#!/usr/bin/python
import numpy as np
from multiprocessing import Process, Queue
from Queue import Empty
import cv2
import cv2.cv as cv
from PIL import Image, ImageTk
import time
import Tkinter as tk
#tkinter GUI functions----------------------------------------------------------
def quit_(root, process):
process.join()
root.destroy()
def update_image(image_label, queue):
frame = queue.get()
im = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
a = Image.fromarray(im)
b = ImageTk.PhotoImage(image=a)
image_label.configure(image=b)
image_label._image_cache = b # avoid garbage collection
root.update()
def update_all(root, image_label, queue):
update_image(image_label, queue)
root.after(0, func=lambda: update_all(root, image_label, queue))
#multiprocessing image processing functions-------------------------------------
def image_capture(queue):
vidFile = cv2.VideoCapture(0)
while True:
try:
flag, frame=vidFile.read()
if flag==0:
break
queue.put(frame)
cv2.waitKey(20)
except:
continue
if __name__ == '__main__':
queue = Queue()
print 'queue initialized...'
root = tk.Tk()
print 'GUI initialized...'
image_label = tk.Label(master=root)# label for the video frame
image_label.pack()
print 'GUI image label initialized...'
p = Process(target=image_capture, args=(queue,))
p.start()
print 'image capture process has started...'
# quit button
quit_button = tk.Button(master=root, text='Quit',command=lambda: quit_(root,p))
quit_button.pack()
print 'quit button initialized...'
# setup the update callback
root.after(0, func=lambda: update_all(root, image_label, queue))
print 'root.after was called...'
root.mainloop()
print 'mainloop exit'
p.join()
print 'image capture process exit'
- 配置：Windows 7 家庭版、Python 2.7.5、OpenCV 2.4
- 免责声明：上面的代码受此启发。