Category: Computer Programming Tutorials

In this video on OpenCV Python Tutorial For Beginners, I am going to show How to use image Histograms using OpenCV Python. Histograms Organize data into groups by counting how much data is in each group. Gist of code I used in this video (Drawing a histogram in opencv Python Tutorial ) – https://gist.github.com/pknowledge/c27a83b80edf5e20d58438da69c2bfd6 So What is a Histogram?
A Histogram is a variation of a bar chart in which data values are grouped together and put into different classes.
This grouping allows you see how frequently data in each class occur in the data set. OpenCV is an image processing library created by Intel and later supported by Willow Garage and now maintained by Itseez. opencv is available on Mac, Windows, Linux. Works in C, C++, and Python.
it is Open Source and free. opencv is easy to use and install. Starting with an overview of what the course will be covering, we move on to discussing morphological operations and practically learn how they work on images. We will then learn contrast enhancement using equalization and contrast limiting. Finally we will learn 3 methods to subtract the background from the video and implement them using OpenCV. At the end of this course, you will have a firm grasp of Computer Vision techniques using OpenCV libraries. This course will be your gateway to the world of data science. Feel the real power of Python and programming! The course offers you a unique approach of learning how to code by solving real world problems. #ProgrammingKnowledge #ComputerVision #OpenCV
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My Website – http://www.codebind.com DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!

Learn how to use GraphQL with Laravel and Vue.js in this tutorial course. We'll be using the Lighthouse package on the backend with Laravel and Vue Apollo on the frontend. We'll build a book recommendation app from scratch as a project. Laravel is a PHP framework and Vue.js is a JavaScript frontend framework. ? Course created by Andre Madarang. Check out his YouTube channel: https://www.youtube.com/channel/UCtb40EQj2inp8zuaQlLx3iQ ⭐️ Course Contents ⭐️
⌨️ (0:00:00) Overview
⌨️ (0:36:20) Lighthouse Package Backend
⌨️ (1:07:33) Vue Apollo Queries
⌨️ (1:54:38) Vue Apollo Mutations
⌨️ (2:33:53) Tailwind CSS Styling
⌨️ (3:19:34) Deployment
⌨️ (3:33:33) GraphQL Client in Laravel
⌨️ (3:49:37) GraphQL Laravel server w/ graphql-laravel
⌨️ (4:15:24) GraphQL Authentication in Laravel w/ Lighthouse & Passport
⌨️ (4:40:06) GraphQL Authentication in Vue Apollo — Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://www.freecodecamp.org/news And subscribe for new videos on technology every day: https://youtube.com/subscription_center?add_user=freecodecamp

Learn the fundamentals of the very popular Node.js runtime and get comfortable writing JavaScirpt code for Node.js. ? Course created by Samer Buna. Check out his website for more courses: https://jscomplete.com/ ⭐️ Course Contents ⭐️
⌨️ (0:03:24) Getting Node
⌨️ (0:06:02) What is Node? What is V8? What’s a REPL?
⌨️ (0:15:44) Node’s CLI and process environment
⌨️ (0:22:37) Executing files with Node
⌨️ (0:27:15) Modules wrapping and exports/require
⌨️ (0:37:50) Modules caching and APIs
⌨️ (0:43:32) ECMAScript modules in Node
⌨️ (0:51:15) Using Node/npm packages
⌨️ (0:57:34) Publishing packages
⌨️ (1:02:33) Cleanup and global modules
⌨️ (1:05:30) package.json scripts, npx, and prod/dev dependencies
⌨️ (1:16:47) Creating a web server with built-in http
⌨️ (1:30:47) Creating a web server with express
⌨️ (1:34:14) Require vs import vs import()
⌨️ (1:38:13) Watching files for change in development
⌨️ (1:41:12) Callbacks and promises
⌨️ (1:58:17) Events and streams
⌨️ (2:08:45) Clusters and PM2
⌨️ (2:11:27) Other core libraries in Node
⌨️ (2:14:21) Debugging Node applications
⌨️ (2:19:13) Modern JavaScript review
⌨️ (2:23:19) What’s next? — Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://www.freecodecamp.org/news And subscribe for new videos on technology every day: https://youtube.com/subscription_center?add_user=freecodecamp https://www.youtube.com/watch?v=coQ5dg8wM2o

Welcome to the This course on MySQL Tutorial for Beginners. MySQL Database is world's most popular open source database because of its consistent fast performance, high reliability and ease of use. MySQL has Open Source License i.e. it has free GNU General Public License. So it is Free to modify and distribute but all modification must be available in source code format. MySQL Database is Mostly used to power web sites and small apps and it also supports clustering and replication. Database Management System is used to manage the storage and retrieval of data to and from the database and hides the complexity of what is actually going on from the user. SQL (Structured Query Language) is the language used to insert and retrieve content. Clients make queries on the database to Retrieve, Insert, Update or Delete content. ? (00:00:05) – 1 – Introduction to MySQL
? (00:04:26) – 2 – How to Install MySQL on Mac
? (00:11:55) – 3 How to Install MySQL on Windows
? (00:22:25) – 4 – How to Create a Database in MySQL (MySQL Create Database)
? (00:32:13) – 5 – How to Create a Tables in MySQL (MySQL Create Table)
? (00:39:23) – 6 – How to Insert Data into a MySQL table
? (00:46:52) – 7 – Using SELECT Statement to Query Data In MySQL
? (00:55:11) – 8 – MySQL SELECT DISTINCT Statement
? (01:02:20) – 9 – MySQL WHERE Clause with Examples
? (01:12:08) – 10 – MySQL AND condition By Examples
? (01:23:58) – 11 – MySQL OR condition By Examples
? (01:35:31) – 12 – MySQL ORDER BY Clause
? (01:44:03) – 13 – MySQL LIMIT Clause
? (01:48:53) – 14 – MySQL UPDATE Statement
? (01:58:17) – 15 – MySQL DELETE Query
? (02:05:13) – 16 – MySQL TRUNCATE TABLE with Examples
? (02:09:52) – 17 – MySQL DROP TABLE Statement
? (02:15:33) – 18 – MySQL DESCRIBE Statement
? (02:22:25) – 19 – MySQL ALTER TABLE Statement
? (02:34:05) – 20 – MySQL BETWEEN Operator
? (02:39:20) – 21 – MySQL ALIASES
? (02:45:56) – 22 – MySQL IN Clause
? (02:50:54) – 23 – MySQL LIKE Operator
? (03:58:31) – 24 – MySQL INSERT INTO SELECT Statement
? (03:05:56) – 25 – MySQL CREATE TABLE LIKE A1 as A2
? (03:11:55) – 26 – MySQL UNION Operator
? (03:18:09) – 27 – MySQL Primary Key
? (03:26:17) – 28 – MySQL UNIQUE Constraint
? (03:31:51) – 29 – MySQL FOREIGN KEY Constraint
? (03:41:41) – 30 – MySQL NOT NULL
? (03:47:19) – 31 – MySQL AUTO INCREMENT
? (03:53:21) – 32 – MySQL DEFAULT Constraint
? (03:58:03) – 33 – MySQL JOIN
? (04:02:33) – 34 – MySQL INNER JOIN
? (04:09:59) – 35 – MySQL LEFT JOIN
? (04:20:36) – 36 – MySQL RIGHT JOIN #ProgrammingKnowledge #MySQL #SQL
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My Website – http://www.codebind.com DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!

In this course, you will learn the basics of Kali Linux. The course covers installation, using the terminal / command line, bash scripting, tools and features for ethical hacking, and more. The course focuses on Kali Linux but much of the content applies to other versions of Linux as well. ⭐️ Course Contents ⭐️
⌨️ Installing VMWare / Kali Linux
⌨️ Kali Linux Overview
⌨️ Navigating the File System
⌨️ Users and Privileges
⌨️ Common Network Commands
⌨️ Viewing, Creating, and Editing Files
⌨️ Starting and Stopping Services
⌨️ Installing and Updating Tools
⌨️ Scripting with Bash ? Course created by The Cyber Mentor. Check out his YouTube channel: https://www.youtube.com/channel/UC0ArlFuFYMpEewyRBzdLHiw
? The Cyber Mentor on Twitter: https://twitter.com/thecybermentor — Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://www.freecodecamp.org/news And subscribe for new videos on technology every day: https://youtube.com/subscription_center?add_user=freecodecamp https://www.youtube.com/watch?v=coQ5dg8wM2o

In this video on OpenCV Python Tutorial For Beginners, I am going to show How to Detect Simple Geometric Shapes using OpenCV in Python. Gist of code I used in this video (Simple shape detection – Opencv with Python Tutorial ) – https://gist.github.com/pknowledge/1ac15006bb1d86350fc8e5c47d324f64 We will see what contours are. we will Learn to find contours, draw contours, we will see these functions : cv2.findContours(), cv2.drawContours(). In this project we are detecting and tracking motion using live sample video.
The function retrieves contours from the binary image. The contours are a useful tool for shape analysis and object detection and recognition. OpenCV is an image processing library created by Intel and later supported by Willow Garage and now maintained by Itseez. opencv is available on Mac, Windows, Linux. Works in C, C++, and Python.
it is Open Source and free. opencv is easy to use and install. Starting with an overview of what the course will be covering, we move on to discussing morphological operations and practically learn how they work on images. We will then learn contrast enhancement using equalization and contrast limiting. Finally we will learn 3 methods to subtract the background from the video and implement them using OpenCV. At the end of this course, you will have a firm grasp of Computer Vision techniques using OpenCV libraries. This course will be your gateway to the world of data science. Feel the real power of Python and programming! The course offers you a unique approach of learning how to code by solving real world problems. #ProgrammingKnowledge #ComputerVision #OpenCV
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My Website – http://www.codebind.com DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!

Learn Flutter, Google’s groundbreaking multi-platform mobile development framework to create apps for Android and iOS. In this course, Nick Manning from fluttercrashcourse.com teaches you how to get up and running with Flutter quickly and effectively. Nick has been a Flutter engineer since 2017 and has boiled down this real-world know-how into a clear-cut, realistic and step-by-step crash course. Flutter apps are written in the Dart programming language ? Code – https://github.com/seenickcode/tourismandco
? Accompanying blog posts for each lesson – https://fluttercrashcourse.com/blog ⭐️ Contents ⭐️
(0:00) Intro:
⌨️ What this course covers (2:15) Layout in Flutter:
⌨️ Layout concepts
⌨️ Column, mainAxisAlignment, crossAxisAlignment
⌨️ Container and Parameterized StatelessWidgets (14:48) Images:
⌨️ Image, BoxConstraint
⌨️ Configuring image assets
⌨️ Implementing ImageBanner (30:05) Text:
⌨️ Importing a custom font
⌨️ Finalizing our TextSection with Column and EdgeInsets
⌨️ ThemeData, TextTheme and organizing style (48:30) Models:
⌨️ Using Models to represent data and functionality
⌨️ Making our screen dynamic
⌨️ Generics, map(), Anonymous Functions and Cascades (69:33) Navigation and Lists:
⌨️ Parameterized named routes
⌨️ MaterialPageRoute, RouteFactory
⌨️ ListView and GestureDetector ⭐️ Links: ⭐️
? Nick Manning’s Flutter Crash Course: https://fluttercrashcourse.com
? Installing Flutter on macOS: https://www.youtube.com/watch?v=THsihXK1-14
? Installing Flutter on Windows: https://www.youtube.com/watch?v=EDlywQeg5Vs ⭐️ Social: ⭐️
? Twitter: https://twitter.com/seenickcode
? Email: nick@fluttercrashcourse.com
? Nick’s YouTube channel: https://www.youtube.com/channel/UCRCpzcQz-t2ueVihCIx5jDg — Learn to code for free and get a developer job: https://www.freecodecamp.org Read hundreds of articles on programming: https://www.freecodecamp.org/news And subscribe for new videos on technology every day: https://youtube.com/subscription_center?add_user=freecodecamp