如何在计算机上扫描二维码（初学者指南）

How to Scan QR Codes Using Your Computer's Webcam

Most modern laptops and desktop computers come equipped with built-in webcams. These webcams can serve as handy tools for scanning QR codes without the need for additional hardware or software. Here's how to do it using a camera app with a QR code scanning option:

1. Choose a QR Code Scanner Software: Begin by selecting a QR code scanner software that is compatible with your computer's operating system. There are various options available for different platforms, such as Windows, macOS, and Linux. A popular choice is the "QR Code Scanner" desktop application.

2. Download and Install: Just go to Google and download your preferred application or get it from the official Microsoft store. QR Code Scanner, for example, is available on the Microsoft Store.

   

3. Launch the Software: Open the QR code scanner software and grant it the necessary permissions to access your computer's webcam.

   

4. Position the QR Code: Hold the QR code within the webcam's field of view. Make sure the QR code is clear and well-lit for optimal scanning.

   

5. Scan and Interpret: As the software detects the QR code within the camera frame, it will automatically process the data encoded within it. This may lead to various outcomes, such as opening a specific website, displaying text, or triggering an action.

6. Upload Image: You can also scan the QR code image by uploading images. Simply click on the "Open QR Image" button, choose the file to upload the image, and it will open a dialog box displaying the search results.

   

IronBarcode

IronBarcode is a highly versatile and feature-rich software library that plays a pivotal role in streamlining barcode generation and recognition processes within a wide spectrum of applications. Boasting an intuitively designed interface and an extensive array of capabilities, IronBarcode emerges as an indispensable resource for developers seeking to seamlessly integrate robust barcode functionalities into their software solutions. Whether engaged in crafting intricate inventory management systems, dynamic point-of-sale platforms, or any other application reliant on barcode interactions, IronBarcode provides an exceptional framework that ensures effortless integration and remarkable efficiency.

Install-Package IronOcr

using IronBarCode;
using System;

// Read QR code from an image file
var resultFromFile = BarcodeReader.Read(@"QR.png");

// Output the result to the console, showing the decoded information
Console.WriteLine(resultFromFile.Text);

using IronBarCode;
using System;

// Read QR code from an image file
var resultFromFile = BarcodeReader.Read(@"QR.png");

// Output the result to the console, showing the decoded information
Console.WriteLine(resultFromFile.Text);

Imports IronBarCode
Imports System

' Read QR code from an image file
Private resultFromFile = BarcodeReader.Read("QR.png")

' Output the result to the console, showing the decoded information
Console.WriteLine(resultFromFile.Text)

Conclusion

In today's interconnected digital landscape, the ability to seamlessly scan codes using computer resources offers a valuable bridge between the physical and digital realms. QR codes have evolved into versatile tools for instantly accessing a wealth of information. With the integration of built-in webcams, native camera apps, or third-party apps within browsers, this capability extends to computers as well. By following straightforward steps, from software selection to webcam utilization, users can effortlessly interpret external QR codes, opening pathways to websites, contact details, and more.

Moreover, advanced solutions like IronBarcode enhance this experience, providing developers with powerful tools to integrate barcode functionalities into a variety of applications. Embracing the practice of computer-based QR code generation and reading, scanning proves indispensable in simplifying information exchange.

To learn more about how to read QR codes on a Windows computer and extract entire QR codes from PDF files, you can find a full tutorial on the IronBarcode website.