Hi !
This post is the start of a series of posts around OpenCV and DotNet Core .Net 5. Most of my samples are going to be camera based, so I’ll start with the +20 13 lines needed to access a local camera and show the frames in a window.

And the code using Net Core 5:
A couple of notes on previous code
- Pressing Q key will stop the program
- Line 2 define the camera to open based on local indexes, in example
// 0 Logitech Brio
// 1 Msft Lifecam
// ...
// 4 Logitech Capture
// 5 OBS VirtualCam
- This is a standard .Net 5 Console App
- I’m using the great OpenCVSharp nuget packages to have OpenCV capabilities in my app.

And because I’m using Net 5, here goes a before / after preview


That’s all for today!
Happy coding!
Greetings
El Bruno
More posts in my blog ElBruno.com.
More info in https://beacons.ai/elbruno
References
- OpenCVSharp, https://github.com/shimat/opencvsharp
- Source post with Python Code, VSCode – 20 lines to display a webcam camera feed with #Python using #OpenCV
Net 5 and OpenCV
- 13 lines to display a 🎦 camera feed with OpenCV and Net5
- Detecting edges on the 🎦 camera feed with Canny algorithm, OpenCV and Net5
- Detecting corners on the 🎦 camera feed with FAST algorithm, OpenCV and Net 5
- Display the 🎦 camera feed in a WinForm using OpenCV and Net5
- Face Detection using Face Cascades on the 🎦 camera feed using OpenCV and Net 5
- Face Detection using DNN on the 🎦 camera feed using OpenCV and Net 5
- Face Detection, DNN vs Haar Cascades on the 🎦 camera feed using OpenCV and Net 5
- Age and Gender estimation on the 🎦 camera feed using OpenCV and Net 5
- Caffe Model Zoo (GoogleNet) detection from the 🎦 camera feed using OpenCV and Net5
- Pose detection from the 🎦 camera feed using OpenCV and Net5
- Packaging a WinForm OpenCV and Net5 App in a one-self contained file
- Display a video file 🎥 in Winform using OpenCV and Net5
- Open a video file 🎥 and save each frame as a PNG 🖼 file to a folder 📂
- (Coming Soon) QR Codes detection on the 🎦 camera feed using OpenCV and Net 5
Face Recognition and Face Detection series in Python
- Detecting Faces with 20 lines in Python
- Face Recognition with 20 lines in Python
- Detecting Facial Features with 20 lines in Python
- Facial Features and Face Recognition with 20 lines in Python
- Performance improvements with code
- Resize the camera input with OpenCV
- Working with Haar Cascades and OpenCV
- Detect and blur faces 😁 using haar cascades
- Detect and blur faces 😁 using DNN
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