opencvimshowthreadpython

2016年1月13日 — Hi,. the imshow function is not thread safe. A thread must acquire a lock before showing the image and release it afer the specified time in the ...

2019年3月30日 — opencv's gui functions, like namedWindow, imshow, waitKey HAVE to stay on the main thread. and be careful with multithreading in general ...

2019年3月13日 — I have multiple threads (one for each camera) that needs to imshow images. However, I run into an error with the second NamedWindow command.

Multithread cv2.imshow. GitHub Gist: instantly share code, notes, and snippets ... t = threading.Thread(target=multiThreadSub, name='sub') ... cv2.imshow('window', ...

2017年3月17日 — The issue is actually with the X11 library that opencv uses to draw on screen. It doesn't seem to support writing from multiple threads. Makes ...

2018年7月6日 — In this post, we'll examine the effect of putting calls to cv2.VideoCapture.read() and cv2.imshow() in their own dedicated threads. All the code ...

2022年10月15日 — Solution for the window - not responding problem with cv2.imshow(). pip install a-cv2-imshow-thread. Usage: import glob import os from ...

2017年6月15日 — I solved the issue by using mutables, passing a dictionary cam_disp = } to the thread and reading the value in the main thread.

2021年5月5日 — In main program I had GUI maintained by main thread so I need to handle camera with other threads.So is there a way I can close and reopen ...

2020年8月28日 — 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 ...