OpenCV Image Reading, Display, and Core Matrix Operations
1. Image Reading and Display
The following code demonstrates reading an image from disk and displaying it in a window.
#include <opencv2/opencv.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc, char** argv) {
// Read the image in grayscale mode
Mat imageData = imread("path/to/image.jp ...
Posted on Sun, 10 May 2026 11:36:29 +0000 by theresandy
Implementing Material Recognition on LicheePi 4A with YOLOX and OpenCV
Development Board Setup
System Installation
The Debian system (20230920 version) was selected for the LicheePi 4A. The installation process involves:
Using burn_tools.zip for flashing
Modifying the burn_lpi4a.bat file path to point to the downloaded image
Disabling driver signature enforcement in Windows 10 for successful driver installation
...
Posted on Sat, 09 May 2026 17:03:16 +0000 by seanlyons
Developing a Windows Dynamic Wallpaper Application with PyQt5 and OpenCV
Core Dependencies and Modules
The implementation relies on `PyQt5` for the graphical user interface, `cv2` (OpenCV) for video stream processing, and `win32api` to manipulate the Windows desktop hierarchy. Below is the essential import structure required for the application to function.
import os
import sys
import time
import win32gui
import w ...
Posted on Sat, 09 May 2026 07:12:18 +0000 by DaveTomneyUK
Setting Up Darknet with YOLO on Ubuntu
GPU Driver Installation
Identify your NVIDIA GPU model and download the appropriate driver from NVIDIA's official site. For example, with a GTX 1080 Ti:
Remove any exisitng NVIDIA drivers:
sudo apt-get remove --purge nvidia\*
Disable the open-source nouveau driver by creating a blacklist file:
sudo tee /etc/modprobe.d/blacklist-nouveau.conf &l ...
Posted on Fri, 08 May 2026 10:06:42 +0000 by yuws
Ubuntu Deployment Workflow for ORB-SLAM2 and ROS Melodic Integration
Visual Simultaneous Localization and Mapping (SLAM) applications frequently leverage the ORB-SLAM framework due to its efficeincy. Establishing a functional workspace on Ubuntu involves installing specific libraries, compiling source code, and resolving common linkage errors.
Prerequisite Tools
Initialize the environment with essential version ...
Posted on Fri, 08 May 2026 08:57:16 +0000 by Bismark12