数据结构-defaultdict

defaultdict 集成自ditc，是属于collections模块中的一种数据结构，它可以在访问不存在的键时自动提供默认值，这一特性使得处理复杂的数据结构...

指示灯排序

数据结构-队列Queue

Queue模块是Python内置的标准模块，模块实现了三种类型的队列，它们的区别仅仅是条目取回的顺序，分别由3个类进行表示:

数据结构-小点堆heapq

4.弹出最小值的同时，补充一个值进堆 ：heapq.heapreplace(list, b)

A judgment method by feature matching through the positioning area of the QRCode

By using the "回" shape feature of the three positioning points of the QR code, a...

二维码的图像特征

1.二维码是用特定的几何图形按一定规律在平面上分布的黑白相间的图形，利用黑色像素代表二进制 “1”，白色像素代表 “0”，通过黑白像素点的排列来记录数据信息。

By scanning the WeChatQRCode to identify the QR code

WeChat has released its QR code detection and recognition algorithm (based on C+...

The C++ version of zbar

Recognize QR codes by pyzbar

Here we explains how to use pyzbar to recognize QR codes.

A cpp implementation the weighted average threshold as the criterion for opt

By using OpenCV 3 to implement the process described earlier, the results obtain...

A method for calculating the weighted average threshold as the criterion for opt

If only using the morphological method, it may result in differences between the...

A more effective method for searching for the filling range of the target

Reference: An Algorithm for Identifying Objective Questions on Answer Sheets - Y...

An improved method for identifying objective questions_V2

The whole source code of last page:https://cloud.tencent.com/developer/article/2...

An improved method for identifying objective questions

As mentioned in the previous method, the thickness of the printed font may affec...