Python 3 reptile (14) verification code processing

 Infi-chu: http://www.cnblogs.com/Infi-chu/ 1, Graphic verification code identification1. Use tesserocr import tesserocr from PIL import Image # Store a picture of verification code locally for testingimage = Image.open('test.jpg')result = tesserocr.image_to_text(image)print(result) # Convert text directly to stringimport tesserocrprint(tesser ...

Posted on Fri, 20 Mar 2020 11:00:25 -0700 by madspoihur

Analysis of HAL Method Call Flow in OpenCV

There are some so-called HAL(Hardware Acceleration Layer) implementations in OpenCV that seem to be hardware related by name, but they are not. It can be understood that a faster version of OCV implementation is better.What this article does is to find out its implementation or cut into the process to get through the whole function call logic.T ...

Posted on Wed, 18 Mar 2020 11:00:02 -0700 by readourlines

Advanced operating system process management

1, Process descriptor Process control block PCB: it is a data structure for OS control process operation, and a task struct structure. PCB includes: process identification information (process identifier PID, etc.), execution field information (CPU field, field information needs to be saved during process switching), process image information ( ...

Posted on Wed, 18 Mar 2020 06:43:00 -0700 by whiterecluse

Spring annotation - life cycle, attribute assignment, auto assembly

1, Bean's life cycle Technological process Bean creation - initialization - Destruction Establish: Single instance: creating objects when container starts Multiple instances: creating objects on each call Initialization: After the object is created, the initialization method is called Destruction: Single instance: call destroy method when ...

Posted on Wed, 18 Mar 2020 05:38:08 -0700 by jay7981

Several methods, functions and summary of clearfix clearing floating

clearfix clear float Floating phenomenon Float Imagine that a float can be moved left or right until its outer edge touches the border of another box or another floater. Floating effect: <body> <div class="container"> <div class="left"> </div> <div class="right"> </div> ...

Posted on Tue, 17 Mar 2020 21:09:38 -0700 by gammaster

Laravel event asynchronous example

It was sorted out yesterday Event mechanism of Laravel Today, I want to verify its asynchronous operation. 1, preparation 1.1 create Event and Listener respectively, \App\Events\Test::class => [ \App\Listeners\TestA::class ], app\Events\Test: <?php namespace App\Events; use Illuminate\Broadcasting\Channel; ...

Posted on Mon, 16 Mar 2020 22:10:07 -0700 by ud2008

Why does the number of Map buckets exceed 8 before turning into a red black tree?

Many people should be confused when they see this problem. Because most of the articles analyze how the linked list is converted into a red black tree, but they do not explain why the conversion action is only done when the length of the linked list is 8. The author's first reaction is the same, only ...

Posted on Sun, 15 Mar 2020 23:43:54 -0700 by sebthib55

A quick understanding of Atomic (Atomic integer / Atomic reference / Atomic array / LongAdder)

Catalog Preface Ask: is int thread safe? Demarcation line of basic chapter of Atomic Atomic integer (base type) Overall introduction AtomicInteger Improvement of the above int type example Source code analysis CAS Atomic reference Unsafe implementation Security implementation - using CAS ...

Posted on Sun, 15 Mar 2020 22:38:25 -0700 by rkm11

Machine learning notes 8-Logistic regression basis

1, Basic knowledge 1 meaning of regression Regression is the best fitting, the process of fitting these points with a straight line, the process of logical regression is the process of finding the best fitting parameters, using the optimization theory. 2. Common optimization algorithms in optimiza ...

Posted on Sun, 15 Mar 2020 21:53:50 -0700 by zaneosak

19 array definition and access

Chapter 19 array definition and access Author: Zhang Zimo 1, Concept of container A container is a storage structure that can store multiple data together. Each data is called an element of the container. **Containers in life: * * water cup, wardrobe, classroom 2, The concept of array Array ...

Posted on Sun, 15 Mar 2020 03:47:47 -0700 by straycat