OpenCV Python Tutorial #5 - Colors and Color Detection

Welcome to this video in the OpenCV tutorial series! In this one, I'll be talking about colors and how to detect them. We can even detect specific colors from our video feed and only display those colors. We'll also go over color display methods like RGB, BGR, and HSV.

⭐️ Timestamps ⭐️
00:00 | Introduction
00:45 | HSV Color
06:40 | Masks

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⭐️ Tags ⭐️
- Color detection in OpenCV
- Colors OpenCV
- HSV OpenCV
- Python
- Computer vision
- Cameras and video capture

⭐️ Hashtags ⭐️
#OpenCV #Python #CameraCapture

[SadSack]

For others like me who struggled to create the numpy array:
I kept getting
> Unsupported depth of input image:
> 'VDepth::contains(depth)'
> where
> 'depth' is 4 (CV_32S)
This indicates that the numpy array consists of 32 bit signed integers which are not supported by cvtColor.
You should create your array like this, specifying datatype uint8:
bgr_color = np.array([[[blue, green, red]]], dtype=np.uint8)

[labscience]

1:11
HSV = Hue, Saturation, Value
HSL = Hue, Saturation, Lightness
Both are a bit different from each other.

[arjunsahlot]

HSV stands for hue, saturation, value. 1:10

[TheDtkxiang]

I was looking into machine vision and this video's content on mask and hsv inspired me on the direction i should move in.
If this had appeared earlier, i would not have wasted time figuring out canny and harris corner detection.
Not that they are bad, just that I prefer simple solutions that I have full understanding of.
Keep up the great work.

[CubixCreations]

Another amazing video Tim, thank you!

[smoothrain]

Hello Tim you’re such an amazing youtuber keep it up👏👏👏👏. From Kenya love you❤️💖

[naokimc]

now i finally know how green screen works, yay!

[Doraredora]

You deserve this 🙏 Tim proud to be your subscriber

[rkade]

Episode 5: Hello everyone, today we are going to be detecting colors.
Episode 15: HACKING INTO A DRONE AND SPYING ON THE GOVERNMENT...

[timsosnora]

Thank you so much for your tutorials !!!!

[ntechplayz]

Love the way you explain things, well done!!!

[JuANdELAMANaNA]

the HSV colors do not match what all the color pickers say, and i cant find one that goes from 0-255, all use degrees and %. i dont know how to get any correct HSV colors

[edwardedward]

Hello Tim, how are you ? Last time you talked about MS VSC and it was very helpful. Many thanks ^_^

[alexanderwang]

This is such a well made tutorial series.

[toapyandfriends]

I do visual effects work and I'm trying to write an openCV that will detect diffuse maps out of a group of normal maps and bump maps and diffuse maps and occlusion maps and roughness maps and metal maps I can't place examples of these images here you could Google and find them but can you show me how to write an open CV that will do that?

[johngroebe]

Great set of tutorials!! I guess that before displaying the images regular on the screen the color scheme should be converted back from HSV to BGR?

[drydenstewartenterprises]

Hey Tim, I have an idea for a tutorial I would love it if you would consider it. How to get open cv and a pyttsx3 python chat bot working together. I'm trying on my own as a beginner programmer to build a personal assistant robot that can function offline, I want to be able to ask it to identify an object, not having to display it on a screen but to verbally respond to what the object is. also, I want to incorporate s.l.a.m. into it ( I already bought 2 identical webcams for stereo vision), so it can map its environment and remember that map and update that map each time it passes through that location. It might be a bit of a challenge I'm sure, but you really have simplified so much for me so far, I really hope you will accept this!

[SAMETELMACI]

youre awesome dude, please keep going

[lifesgood]

next video tutorial series How to solve the rubics cube?

[lukajeliciclux]

@TechWithTim V in HSV mean value for value of brightness