Previous Tutorial Discrete Fourier Transform Next tutorial How to parallelize your code using OpenCV parallel_for_ Original author Bernát Gábor Compatibility OpenCV >= 3.0 Goals You’ll find answers to the following questions: How to print and read text entries to a file and OpenCV using YAML or XML files? How can I do the same with […]
Tag: core
Core function: change the contrast and brightness of the image OpenCV v4.8.0
Previous tutorial: Adding (blending) two images using OpenCV Next tutorial: Discrete Fourier Transform Original author Ana Huamán Compatibility OpenCV >= 3.0 Goals In this tutorial you will learn how to Access pixel values Initialize matrix with zeros Learn what cv::saturate_cast does and its usefulness Get some cool information about pixel transforms Improve image brightness with […]
Core function: Discrete Fourier transform OpenCV v4.8.0
Previous tutorial: Changing the contrast and brightness of an image Next tutorial: Input and output files using XML and YAML files Original author Bernát Gábor Compatibility OpenCV >= 3.0 Goals We will seek answers to the following questions: What is the Fourier transform and why is it used? How to do Fourier transform in OpenCV? […]
Centos7 installs the latest stable version of Redis7.x | Configure startup (hardcore level | nanny level)
Advanced syntax and practical combat of classes in Python3 Python3 (basic | advanced) syntax practice (|multi-threading|multi-process|thread pool|process pool technology)|solutions to multi-thread security issues Python3 data science package series (1): Practical data analysis Python3 data science package series (2): Practical data analysis Python3 data science package series (3): Practical data analysis Win11 View the installed Python […]
Core function: mask operation of matrix OpenCV v4.8.0
Previous tutorial : How to scan an image, lookup table and measure time using OpenCV Next tutorial: Image manipulation Original author Bernát Gábor Compatibility OpenCV >= 3.0 Masking operations on matrices are very simple. The principle is that we recalculate the value of each pixel in the image based on the mask matrix (also called […]
Core Features: Mat – Basic Image Container OpenCV v4.8.0
Next tutorial: How to scan an image, lookup table and measure time using OpenCV Original author Bernát Gábor Compatibility OpenCV >= 3.0 Goals We have many ways to acquire digital images from the real world: digital cameras, scanners, computed tomography and magnetic resonance imaging, to name a few. In each case, what we (humans) see […]
Why does the Linux system generate a large number of core files?
Author：rab Directory 1. Problem analysis 2. Solution Expand 1. Problem analysis I just talked about “Basic Optimization of Docker Configuration” in the previous article, so I will add some more here. During the short holiday of Mid-Autumn Festival + National Day, I received an online server disk alarm notification. The online server architecture is a […]
Binding processes, threads and CPU cores on Linux
CPU Affinity is a process (or thread) bound to a specific CPU core (or CPU set), so that the process (or thread) can only run on the bound on the CPU core (or collection of CPUs). Processes (or threads) are not inherently tied to a CPU core. Each time a process (or thread) is scheduled […]
vue, vuex state management, vuex core concept state state
The core of every Vuex application is the store. A “store” is basically a container that contains most of the state in your application. There are two differences between Vuex and simple global objects: Vuex’s state storage is reactive. When a Vue component reads state from the store, if the state in the store changes, […]
From 0 to 1, teach you step by step how to write the “Message Queue” project (Java implementation) – core class memory storage
Article directory 1. Memory storage Switch storage structure queue storage structure Binding relationship storage structure All message information storage structure The message information storage structure corresponding to the queue Message storage structure that was taken but not responded to 2. Write code 1. Memory storage Let’s first design how to store data in memory. In […]