OpenCV Python Tutorial For Beginners 3 - How to Read, Write, Show Images in OpenCV

OpenCV github page

Read an image
flag integer value description
cv2.IMREAD_COLOR 1 Loads a color image.
cv2.IMREAD_GRAYSCALE 0 Loads image in grayscale mode
cv2.IMREAD_UNCHANGED -1 Loads image as such including alpha channel

pip is a package management system used to install and manage software packages written in Python.
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
★★★Top Online Courses From ProgrammingKnowledge ★★★

★★★ Online Courses to learn ★★★

★★★ Follow ★★★

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!

[Hakerman-edpe]

when i saw this IDE color my eyes were be like : Bravo six going dark

[TheDickw]

Thank you for your excellent video. You’re a detailed explanation of what is going on really helps my understanding of the subject. Showing both what happens when the file is available and when it is not adds an extra dimension to the learning experience.
Again thank you.

[hfe]

i like when he explain, very clear and easy to understand, not same the others tutorial theyre talking too fast that hard for me to absorb as beginner

[sukumarroychowdhury]

From your voice, I know you are Sourav. Really thank you for such wonderful; presentation.

[yesdone]

It's too good bro, such a clearcut explanation. All the best.

[tarungupta]

Sir, your Explanation is very clear and the way is pretty good

[jn]

I figure that out ... It fails to make a copy when you use the (0) option and click on the (X) to close the windows, but if instead you set the number of milliseconds to 5000. It makes a copy right after it closes! In any case this is a nice tutorial, man. Working on a "neighborhood speed detector" (things are really crazy with lunatics speeding thru my street here and this is a nice way to cooperate with law enforcement)!

[mahnoorsakhawat]

What is meant by destroying a window? What exactly does the command destroyAllwindows does?

[priyaupwanshi]

in the previous videos we install pips and python then why we use pyCharm instead python IDE ? Can you please share installation process of PyCharm ?

[howfar]

very nice video.. you have increased my confidence to learn on my own... :)

[_i.a.m_]

Your video gave me hope! It was systematic and so easy to understand. Thank you so much for uploading 😁

[jetpix]

Thankyou Sir, Your Tutorial is very understandable

[shrutivaidya]

@programmingKnowledge sir I'm getting error code 1, saying cv2 has no attribute as imread. Please help to resolve this and my image isn't getting displayed.

[hdifaem]

Thank you so much for this tutorial,
And want to ask if i can use spyder ide instead of pycharm without having a trouble following your tutorial.

[harshbarvaliya]

Good video., In understandable language

[Parulmittal-wkmp]

hey cv2.imshow() is not working in jupyter and kernel got crashed. could you suggest me some solution for this, that would be very helpful.

[t-macpie]

use Visual Studio Code, got error but code run fine. (can't keep it like this it may cause confusion later)
switch to Pycharm can't even install opencv-python error
try upgrade pip. error a long error.
try install opencv ...successfully.


when it works in a wildcard situation make me really paranoid. it is like when 1+1 isn't equal 2 and nothing make any sense at all. =.=

[sammetayuvaadithya]

i am using python ide shell 3.7.0(compatible for opencv) but i am getting error that cv2 has no attribute imread
please resolve this issue

[shankarwarudkar]

I have text file which contain the image co ordinates so how to read that co ordinates and display the image from them? pls help

[prathamn]

Watch in 1.25x speed. Awesome series btw.