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As urbanization accelerates, subway systems have become essential transportation infrastructure in modern cities. With increasing service years and complex underground environments, subway tunnels face various types of deterioration, particularly water leakage issues. These problems not only cause structural degradation and reinforcement corros ...

MATLAB Function for Pyramid-Based LK Optical Flow This article presents a complete MATLAB implementation of the Lucas-Kanade (LK) optical flow algorithm using a pyramidal (coarse-to-fine) approach. The function estimates the apparent motion vector field between two successive grayscale image frames. Main Algorithm Function function [flowX, flow ...

Edge detection is a fundamental technique in digital image processing, designed to isolate the boundaries of objects within a scene. These boundaries typically correspond to regions where significant fluctuations in pixel intensity or color occur, providing critical information for object recognition, structural analysis, and texture categoriza ...

Parent Component for Image Upload Create an upload button that trigegrs the file selection dialog: uni.chooseMessageFile({ extension: [".jpg", ".png", ".jpeg"], success: (res) => { const paths = res.tempFiles.map((item) => item.path); uni.navigateTo({ url: `/pages/document/detail?files=${pat ...

ROS (Robot Operating System) provides a set of libraries and tools to help software developers create robotic applications. It offers hardware abstraction, device drivers, libraries, visualization tools, message passing, and package management among other features. rosbag is used for recording depth camera data. The rosbag package provides a co ...

Follow these steps to set up OpenCV in your VS2019 environment: Navigate to View → Other Windows → Property Manager → Add Microsoft.Cpp.x64.user under Release|x64 Configure include directories: Open properties of Microsoft.Cpp.x64.user → VC++ Directories → Include Directories Add these paths: D:\Libraries\opencv\build\include``D:\Libraries\op ...

Images captured by iOS device cameras often appear rotated 90 degrees when displayed in web applications. This occurs due to orientation metdaata stored in the image's EXIF data, which requires manual correction for proper rendering. The issue primarily affects iOS and certain Samsung devices. The solution involves reading EXIF orientation tags ...

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 ...

When working with Halcon's HImage objects in C#, converting them into standard .NET Bitmaps can present performance challenges, especial when dealing with color images that have separate red, green, and blue channels. The key issue revolves around correctly interpreting pointer data returned by Halcon methods like GetImagePointer3. When this me ...

Prerequisites Install the necessary dependencies to handle image manipulation and EXIF data: npm install cropperjs exif-js Plugin Architecture Create a dedicated module to encapsulate cropping logic. This approach attaches methods to the Vue prototype, making them accessible globally. File location: src/utils/imageClipper.js import Cropper fro ...