El Bruno

Tag: Code Sample

#Python – Context Meny and Key Press with #PySimpleGUI

Hi ! After my base sample code for a GUI app, now it’s time to add some interaction features: Context Menu Capture Key Press In the following example, I’m adding a context menu with the following elements: This can be done as part of the window definition, in example The menu definition and how to… — read more

Aug 19, 2020
#Python – Creating GUIs with #PySimpleGUI. 2 webcams view with 50 lines of code

Hi ! Working with Computer Vision is super fun. And there are some scenarios where display the step by step of the processing of an image is the best way to present this. In most of my scenarios I use OpenCV, however for a more detailed presentation I needed to search and learn a GUI… — read more

Aug 18, 2020
#Python – #FastAPI Webserver sharing information from values in a different thread

Hi ! After my yesterday post using Flask, I was sure that a FastAPI version will be needed, so here it goes: I have a common scenario which involves: A sensor collecting information A web-server publishing the sensor information Read my previous posts to understand why I think this is the simple way to solve… — read more

Jul 7, 2020
#Python – Flask Webserver sharing information from values in a different thread

Hi ! I have a common scenario which involves: A sensor collecting information A web-server publishing the sensor information This is simple, however the sensor does not support constants requests, and it may return a “too many requests” response when called directly. The idea to get the sensor information directly in the web-request was not… — read more

Jul 6, 2020
#ComputerVision – Object Detection with #YoloV3 and #MobileNetSSD

Hi ! I have a ToDo in my list, to add some new drone demos. In order to do this, I was planning to perform some tests with pretrained models and use them. The 1st 2 in my list are Yolo and MobileNetSSD (see references). YoloV3 Let’s start with one of the most popular object… — read more

Jun 8, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (21/N)

Hi ! In my post series I already wrote about how to detect faces. We can do this with a camera and OpenCV. However, a drone can also be moved on command, so let’s write some lines to detect a face, and calculate the orientation and distance of the detected face from the center camera… — read more

Jun 5, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (20/N)

Hi ! We already have the drone camera feed ready to process, so let’s do some Image Segmentation today. As usual, let’s start with the formal definition of Image Segmentation In digital image processing and computer vision, image segmentation is the process of partitioning a digital image into multiple segments (sets of pixels, also known… — read more

May 21, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (19/N)

Hi ! Today I face another challenge: I needed to overlay an image on top of another. Something like this. Lucky for me, and as usual, OpenCV allow us to do this with a few lines of code. Let’s take a look. Line 8. Define a custom size for all the images: background image and… — read more

May 7, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (18/N)

Hi ! Today I’ll step back a couple of posts, and add 2 simple lines to allow me to save a video file from the Drone camera. This is a request, and it’s makes a lot of sense to have recorded a file with the drone camera. The video will later contains detected objects and… — read more

May 6, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (17/N)

Hi ! Once we have the a custom vision trained model instance, we can use it to recognize objects from the drone camera feed. Read my previous posts for descriptions on these. Another interesting scenario, is to save local files for every detected object. In the following code, I’ll save 2 different files for every… — read more

Apr 29, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (16/N)

Hi ! In my previous post, I shared an example where I analyzed the camera feed using a Image Recognition model created using Custom Vision. Today I’ll expand the sample, and show in real time the detected MVPs logos with a frame in the drone camera feed. Let’s take a look at the demo working… — read more

Apr 28, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (15/N)

Hi ! Let’s use Custom Vision to analyze the images from our drone camera. In this scenario, I created a custom model to recognize MVP awards from my MVP wall. I know, that’s bragging, but I like it. Disclaimer: There are plenty of documentation and tutorials about Custom Vision. I won’t go deep on the… — read more

Apr 24, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (12/N)

Hi! Today code objective is very simple, based on a request I received from internet: The drone is flying very happy, but if the camera detects a face, the drone will flip out ! Let’s take a look at the program working: This one is very similar to the previous one. I also realized that… — read more

Mar 18, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (11/N)

Hi! Today code objective is very simple: The drone is flying very happy, but if the camera detects a banana, the drone must land ! Let’s take a look at the program working: And a couple of notes regarding the app Still use Haar Cascades for object detection. I found an article with a Xml… — read more

Mar 16, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (10/N)

Hi! Back to some drone posts! I was kind of busy during the last weeks and now I can get back to write about the drone. OK, in the last posts I described how to connect and work with the drone camera feed using OpenCV. Now with 2 extra lines of code we can also… — read more

Mar 9, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (9/N)

Hi! Let’s take some Frames Per Second measurements on the UDP and OpenCV connection. It seems that working with simple movements, the values moves between 30 and 60 FPS. Just added a couple of lines in the main While, to calculate the FPS. As a final note, just need to mention that I make some… — read more

Feb 20, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (8/N)

Hi! Now that I started to understand how UDP works, I also did my research to find which are the best options to access an UDP video feed. Lucky for me, there are plenty of resources about doing this task using my old friend OpenCV. Most of the OpenCV documentation is written in C++. However… — read more

Feb 19, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (7/N)

Hi! No code today. Mostly because I spend a decent amount of time trying to understand how the DJI Trello camera feed works. In order to access the camera feed remotely we need to perform 2 steps. First we need to send the command “command” to the drone, and then the command “streamon” to enable… — read more

Feb 17, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (6/N)

Hi! Today is code time also! And a continuation from my previous sample. Yesterday I show how to read a static value: the battery. And, when you work with a device like a drone there are other important values to analyze in order to send commands to the drone. Like altitude, position, time of flight… — read more

Feb 14, 2020
#Coding4Fun – How to control your #drone with 20 lines of code! (5/N)

Hi! Today is code time! In my previous post I share some code to send commands to the drone. Today I’ll show how to read the information from the drone. Before I start, someone asked if my kids are having fun with the drone. A image will be enough to answer this. Reading drone information… — read more

Feb 12, 2020