python opencv cv2 imshow threading 多线程
除了线程同步,还需要注意的是「窗口处理」要放在主线程
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import sys
import threading
from time import sleep
from queue import Queue
import cv2
import numpy as np
from functools import reduce
print(sys.version)
q = Queue()
def run(n):
thread = threading.current_thread()
thread.setName('thread-fuck')
print('tid is: {0}'.format(thread.ident))
print('thread name is: {0}'.format(thread.getName()))
for i in range(100):
img = np.random.randint(0,255,(200,300)).astype(np.uint8)
q.put(img)
sleep(0.1)
q.put(0)
if __name__ == '__main__':
thread = threading.Thread(target=run, args=(6,))
thread.start()
while True:
try:
item = q.get(block=False)
except Exception as e:
keycode = cv2.waitKey(20)
if keycode & 0xFF == ord('q'):
break
continue
if type(item) == int:
break
if type(item) == type(0):
break
cv2.imshow('fuck', item)
thread.join()
cv2.waitKey(0)
cv2.destroyAllWindows()
print('done!')
+V why_null 请备注:from博客园