Detect Edges with OpenCV and Python | Computer Vision Tutorial

Welcome to the OpenCV Basics series. In this series, we'll be going through all the basics of OpenCV from the ground up.

In this video you'll learn how to:
1. Apply Canny Edge Detection to Images
2. Tweak and Tune Detection Parameters to improve Results
3. Export final detections

Get the code:

Links

Chapters:
0:00 - Start
0:12 - Intro
0:46 - Gameplan
1:20 - Tutorial Start
3:06 - Import Dependencies
3:59 - Load Image
7:07 - Viewing and Resizing Images
10:54 - Applying Canny Edge Detection
13:30 - Reducing Noise with a Gaussian Blur
16:12 - Preprocessing with Grayscale
18:36 - Exporting Results

Oh, and don't forget to connect with me!

Happy coding!
Nick

P.s. Let me know how you go and drop a comment if you need a hand!

[rabidgeek]

Hey! As a deaf person, I greatly depend on captions - for most of your videos, they are on (I lipread and catch the occasional errors like 'captcha' when you said 'capture' - this can be prevented if you transcribe and feed your own captions... Youtube has this tool), but this one says captions are unavailable. Please continue to keep your videos accessible - I have viewed many and they have been extremely helpful on my path!! Many thanks for your hard work!

[winstonyeung]

As always, clear and systematic. Thank you.

[atnguyen]

Thank you for another great video Nicholas! I am excited about the GAN can u do the toturial that in the next video

[saiganesh]

Waiting for your next tutorial on this with ANPR collectively
Thank You

🙏🙏🏽🙏🏽 from INDIA

[siyuancheng]

This guy is simply amazing! Love every video, super clear and inspiring, love it

[khadijabarhmi]

Thank you very much, I would like to ask you how to detect the raindrops on the images

[dovydaspocius]

Awesome tutorial! Can we expect video/tutorial in future about Change Detection (DL) for images in (almost) same place but different time? So interesting to hear your opinion about best techniques to achieve it!

[sky_is_the_limit_]

Thank you so much! I have a question: Is there a way to apply threshold ranges automatically in real-time based on image characteristics?

[ameerazam]

Thank you sir for Again you effort for us

[grubersunny]

Hi @Nicholas Renotte I have seen all your tutorial of the Deep Reinforce Learning. Can you make a tutorial for GNN because your tutorial is way too clear to understand than my professor

[Chorum]

Very Nice Tutorial! Found you a minute ago. Which IDE are you using in this Video ?

[CodeWithJoe]

Dude, can you get yourself a jetson-nano and do some tutorials using it? Love your channel btw, great stuff

[roger_island]

@Nicholas Renotte how can I apply cnny Edge algorithm on multiple (2, 000) images at a time? Thank you

[EnEm]

Hello Nicholas,
How to crop multiple bounding box of a image using openCV ? All bounding box should be same size.

[jahamm]

could you create a gui with sliders to adjust the blur / threshold values and then click export once you've got an image you are happy with?

[meghaarorasethi]

Hi, can u plz share the code detect an object from the real image

[kamogahsn]

This was great
Helped actually the images are coming out and she shapes are but how then can I take out the shapes I like

[cristianezequielmorilla]

Thank you very much, I was working on something similar, processing, whether they were handwritten or non-homogeneous numbers. You would cut the image and you would use a dataset like MNIST to train a vanilla CNN or you would use transfering learning with resnet or YOLO, I don't know if those networks detect letters or numbers. sorry for my english, i'm practicing!

[idkidk]

sir can we do a image to text using ESP32, OpenCV and python

[emmanuelakoja]

Can you create a video on how to chat with a 3d object, but users can only respond with a line of multiple choice of emojis, the choice of emojis selected by users determine the kind of questions they get next.