El Bruno

Tag: English Post

#dotnet – Display a video file🎥 in Winform using #OpenCV and #net5

Hi ! Super short post today, however is the base of the next series of posts around OpenCV and .Net 5. I already wrote on how to work with a webcam, and now it’s time to share a simple piece of code to show How to open and process a video frame by frame I’ve — read more

Dec 8, 2020
#RaspberryPi – New OS allows #MicrosoftTeams in the device ! And a simple but amazing config for the onboard LED

Hi ! We have a new Raspberry Pi OS release – December 2020 (see references) and it adds tons of new features. The latest version upgrades Chromium, to a version that allow us to to: join teams calls ! I’m starting to think on have a custom Teams Kiosk just to join meetings, without using — read more

Dec 7, 2020
#PowerPlatform – HowTo: Test Power Automate Flow HTTP using Postman

Hi ! It’s been a while since I wrote about Power Flow Automate, and this is a good memory reminder for myself, I always spend +30 minutes figuring out how to Test a Power Automate Flow, triggered when a HTTP request is received using Postman. So, simple scenario with a Flow triggered when a HTTP — read more

Dec 2, 2020
#Event – Global AI Bootcamp Toronto on Dec 12 🤖🤖🤖 @GlobAICommunity

Hi ! This started to be my annual tradition: Global AI Bootcamp is the last event of the year! And this year, we had a set of amazing session planned with the following topics: Introduction to AI and Cognitive Services for Developers and Information Workers Understanding Autonomous systems, Machine Teaching and Bonsai Platform Knowledge Mining — read more

Dec 1, 2020
#Event – Resources used during the session “Hack a drone, hack the camera and use AI” at the Global AI Tour, Lahore Pakistan, 2020

Hi ! I had a great time early in the day with my Microsoft Student Partners from Lahore Pakistan, for the Global AI Tour. As usual, time for slides and code: Slides Code https://github.com/elbruno/events/tree/main/2020%2011%2030%20Global%20AI%20Tour%20Pakistan Resources DJI Tello Drone, https://www.amazon.com/Tello-CP-PT-00000252-01-Quadcopter-Drone/dp/B07BDHJJTH Ryze Tello SDK, https://www.ryzerobotics.com/tello Viola Jones, Object Detection Framework, https://en.wikipedia.org/wiki/Viola%E2%80%93Jones_object_detection_framework Cognitive Services Custom Vision, https://customvision.ai — read more

Nov 30, 2020
#dotnet – Packaging my WinForm #OpenCV and #net5 app in a one-self contained file (Thanks @shanselman!)

Hi ! A couple of days ago, Scott Hanselman posted about a super cool feature (see references): … you can make a single EXE that will run on any Windows Machine in two commands How to make a WinForms app with .NET 5 entirely from the command line and publish as one self-contained file and — read more

Nov 27, 2020
#dotnet – Pose detection from the 🎦 camera feed using #OpenCV and #net5. Home-made #kinect!

Hi ! LearnOpenCV is an amazing resource to learn about OpenCV. And, it has lot of scenarios of real life problem solved with OpenCV. Most of the samples are in C++ or Python, so I decided to pick one related to pose estimation, and using .Net 5 in a Winforms App, build something like this: — read more

Nov 26, 2020
#dotnet – GoogleNet detection from the 🎦 camera feed using #OpenCV and #net5. Bonus: C++ to C# time!

Hi ! So I was browsing in the OpenCV documentation and I find a nice sample that uses opencv_dnn module for image classification by using GoogLeNet trained network from Caffe model zoo. So I give it a try, and get a decent .Net 5 Winforms App running at ~30 FPS. The model was trained with — read more

Nov 25, 2020
#dotnet – Age and Gender estimation from the 🎦 camera feed using #OpenCV and #net5

Hi ! Face detected, so next step is to use some prebuild models to perform additional actions: like estimate the Age of a face, and also the Gender. In order to do this, I downloaded a couple of models from here. Disclaimer: these models are just sample models, do not use them in production. These — read more

Nov 24, 2020
#dotnet – Detecting Faces, DNN vs Haar Cascades from the 🎦 camera feed using #OpenCV and #net5

Hi ! In one session around computer vision, someone ask the question about which approach is better Haar Cascades or DNN? And the answer can be show using the video below As you can see Haar Cascades works great for faces looking directly to the camera, with good lights and in optimal conditions. However, once — read more

Nov 19, 2020
#Event – Resources used during the session “Getting started with Machine Learning.Net and AutoML” at the MVP Days Israel 2020

Hi ! I had a great time early in the day (04:00AM!) with the MVP Days Israel team talking about how to start with Machine Learning .Net. As usual, time for slides and code: Slides Code https://github.com/elbruno/events/tree/main/20201119%20MVP%20Day%20Israel%20MLNet Resources DotNet Machine Learning.Net GitHub DotNet Machine Learning GitHub DotNet Machine Learning Samples Recording Coming soon ! — read more

Nov 19, 2020
#dotnet – Detecting Faces using DNN from the 🎦 camera feed in a WinForm using #OpenCV and #net5

Hi ! Let’s do some face detection using a DNN model (See references). As yesterday, I won’t write about details, there are almost 20 years of online documentation available. And, IMHO opinion code is much more useful that long writing, so let’s go there. 1st load the Caffe model and the config file. And, once — read more

Nov 18, 2020
#dotnet – Detecting Faces using Cascades from the 🎦 camera feed in a WinForm using #OpenCV and #net5

Hi ! Let’s do some face detection using one of the most popular methods: Haar Casacades (See references). I won’t write about Cascades, there are almost 20 years of online documentation available. And, IMHO opinion code is much more useful that long writing, so let’s go there. 1st load the cascade definition file. And, once — read more

Nov 17, 2020
#dotnet – Display the 🎦 camera feed in a WinForm using #OpenCV and #net5

Hi ! Back on the Windows Forms days, cameras were tricky. We didn’t have a lot of libraries to work, and they usually require some extra work to handle unexpected errors. With Net 5 and OpenCVSharp, we can create a simple WebCam viewer like this one. Let’s start with a [Take a Photo] Windows Form — read more

Nov 16, 2020
#dotnet – detecting corners on the 🎦 camera feed with FAST algorithm, #OpenCV and #net5

Hi ! Today is a quick one: FAST corner detection algorithm. FAST (Features from Accelerated Segment Test) algorithm was proposed by Edward Rosten and Tom Drummond in their paper “Machine learning for high-speed corner detection” in 2006 (Later revised it in 2010). A basic summary of the algorithm is presented below. Refer original paper for — read more

Nov 13, 2020
#dotnet – detecting edges on the 🎦 camera feed with Canny algorithm, #OpenCV and #net5

Hi ! The Canny edge detection is one the most popular algorithms, and it’s also +30 years old. The Canny edge detector is an edge detection operator that uses a multi-stage algorithm to detect a wide range of edges in images. It was developed by John F. Canny in 1986. OpenCV includes the Canny algorithm — read more

Nov 12, 2020
#dotnet – less than 20 lines to display a 🎦 camera feed with #OpenCV and #net5

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 — read more

Nov 11, 2020
#Event – Resources used during the session “Let’s code a drone 🛸 to follow faces with #dotnet”@dotnetdocsshow

Hi ! I had a great time yesterday with the @dotnetdocsshow team talking about how to program a drone. And this time, with a special flavor: Lets program the drone using dotnet core ! It was an amazing experience, and a really fun moment. Scott, David, Cam and Cecil are great hosts, and they make — read more

Nov 10, 2020
#Tools – How to create an IP Camera from a USB Camera on #Windows10

Hi! So, I may need to create a new category for these posts, something like “scenarios that you will never need in your life”, or “I did this once and now I can’t remember what I did”. Today is a simple one, Let’s create a IP Camera from a USB Webcam in Windows. There are — read more

Nov 5, 2020
#RaspberryPi – Raspberry Pi 400,

Hi ! It seems that it was yesterday when I wrote about the amazing and new Raspberry Pi 4, and it was on February ! There was a lot of news since February, however the Raspberry 400 is a huge milestone. From a hardware view, is a faster device, that’s cool. However I really like — read more

Nov 3, 2020