QTableWidget先去读全部的，再进行分页显示，表格固定的是一百行，每次操作对这一百行数据进行刷新，虚拟出完整表格的效果。 测试：QTableWidge分页显示1千万行数据，此种方法优化了文件的读取，可以快速的读取全部的文件内容，表格也只100行，占用内存较小。但是读取了全部大文件，文件占用的较大部分的内存。

iterative_closest_point_2d 受启发 #usage像这样打电话， ret = icp ( d1 , d2 ) 。 d1, d2是2d点的numpy数组。 返回值ret是具有2行3列的转换矩阵。 icp估算旋转，移动，缩放（分别x和y）转换。

Qt5类继承关系图，彩色的，并且带有目录，方便分类查找

opencv3.4.7 OpenCV（Open Source Computer Vision Library）是一个开源的计算机视觉库，它提供了很多函数，这些函数非常高效地实现了计算机视觉算法（最基本的滤波到高级的物体检测皆有涵盖）。 OpenCV 使用 C/C++ 开发，同时也提供了 Python、Java、MATLAB 等其他语言的接口。如果你不了解 C/C++，请阅读《C语言教程》和《C++教程》。 OpenCV 是跨平台的，可以在 Windows、Linux、Mac OS、Android、iOS 等操作系统上运行。

PDF高清带书签，清华大学出版社。 Gary Bradski Adrian Kaehler 著 于仕琪 刘瑞祯 译 版次：2009年10月第1版

毕业设计基于Opencv的车牌识别系统 版本：python3.7.3，opencv4.0.0.21，numpy1.16.2，tkinter和PIL5.4.1. 大概演示 由于样本数据来自网络，因此识别率只是看看而已。但清楚的图片还是可以识别出来的 def close_window(): print("destroy") if surface.thread_run: surface.thread_run = False surface.thread.join(2.0) win.destroy() if __name__ == '__main__': win = tk.Tk() surface = Surface(win) # close,退出输出destroy win.protocol('WM_DELETE_WINDOW', close_window) # 进入消息循环 win.mainloop()

基于QT 的UDP通信例子，里面包括两个例子程序，可以实现简单的UDP通信，便于初学者快速学习，里面一个是server,一个client,其实UDP不分服务器和客户端，只是名字叫这个便于理解调用。

基于opencv的张正友畸变矫正，里面有28张棋盘图，程序可行。

Create visually appealing and feature-rich applications by using Qt 5 and the C++ language Qt 5, the latest version of Qt, enables you to develop applications with complex user interfaces for multiple targets. It provides you with faster and smarter ways to create modern UIs and applications for multiple platforms. This book will teach you to design and build graphical user interfaces that are functional, appealing, and user-friendly. In the initial part of the book, you will learn what Qt 5 is and what you can do with it. You will explore the Qt Designer, discover the different types of widgets generally used in Qt 5, and then connect your application to the database to perform dynamic operations. Next, you will be introduced to Qt 5 chart which allows you to easily render different types of graphs and charts and incorporate List View Widgets in your application. You will also work with various Qt modules, like QtLocation, QtWebEngine, and the networking module through the course of the book. Finally, we will focus on cross-platform development with QT 5 that enables you to code once and run it everywhere, including mobile platforms. By the end of this book, you will have successfully learned about high-end GUI applications and will be capable of building many more powerful, cross-platform applications. What You Will Learn Implement tools provided by Qt 5 to design a beautiful GUI Understand different types of graphs and charts supported by Qt 5 Create a web browser using the Qt 5 WebEngine module and web view widget Connect to the MySQL database and display data obtained from it onto the Qt 5 GUI Incorporate the Qt 5 multimedia and networking module in your application Develop Google Map-like applications using Qt 5’s location module Discover cross-platform development by exporting the Qt 5 application to different platforms Uncover the secrets behind debugging Qt 5 and C++ applications

这是基于opencv的计算机视觉技术书中的一个程序实例，本人觉得很不错，学习三维立体重建的朋友们可以看看啊