Dynamsoft Developer Blog

In the previous article, we demonstrated how to build a React Native QR code scanner using Vision Camera and the Dynamsoft Barcode Reader frame processor plugin. In this article, we are going to talk about how to build a barcode scanner using Expo. Expo is an open-source platform for making...

Raspberry Pi is a cheap single-board computer, which is often adopted by developers as an economical IoT solution, such as scanning barcode and Qr code. One thing you have to know is the CPU clock speed affects the decoding speed and accuracy. Dynamsoft Barcode Reader SDK supports Raspberry Pi. Its...

Svelte is a web framework like React or Vue. Instead of using techniques like virtual DOM diffing, Svelte writes code that surgically updates the DOM when the state of your app changes. In this article, we are going to build a barcode and QR code scanner using Svelte. Dynamsoft Camera...

This article aims to help Go developers to build barcode QR code reader applications with Dynamsoft C++ Barcode SDK on Windows and Linux. You will see how to interoperate Golang with C++ code using cgo, as well as how to deploy the application to Docker. Prerequisites Go 1.19.1 To build...

Quasar is a Vue.js-based framework, which allows web developers to quickly create responsive websites/apps, while Capacitor is a runtime for creating cross-platform iOS, Android, and Progressive Web Apps with JavaScript, HTML, and CSS. In this article, we are going to use the two to create a QR code scanner using...

Previously, we created a Xamarin.Forms Barcode QR code scanner for Android and iOS. Xamarin.Forms is not the end for developing cross-platform mobile apps in C#, because .NET MAUI is on the way. Microsoft mentions that .NET MAUI is the evolution of Xamarin.Forms, and it supports both mobile and desktop development....

If you try to port Xamarin mobile projects to .NET MAUI, you will find there is no problem with packages built for Xamarin Android, but packages built for Xamarin iOS are incompatible. To tackle this issue, you need to change target framework to .NET 6 and rebuild related packages. Dynamsoft...

If you want to use PHP Laravel framework to build a web barcode and QR code reader, you can implement the code logic either on the client side or on the server side. Dynamsoft provides a variety of SDKs for different platforms: desktop, mobile and web. In this article, we...

When using PHP, you may need to integrate a few C++ libraries sometimes. This article guides you through the process of building a PHP Barcode QR code reading extension with Dynamsoft C++ Barcode SDK on Windows and Linux. Download PHP on Windows php-sdk-binary-tools Contains some build-required binaries for Windows, such...

In tasks like barcode scanning and text recognition, we often need to limit the scan region so that only the desired info is extracted. In this article, we are going to build a viewfinder web component as the following which shows which area will be processed. Stencil.js is used to...

In the previous article, we’ve built a React camera component. In this article, we are going to extend the camera component to create a React barcode and QR code scanning library using Dynamsoft Barcode Reader. Getting started with Dynamsoft Barcode Reader DOWNLOAD THE SDK WITH A 30-DAY LICENSE REQUEST A...

Using the getUserMedia API, we can get the camera preview in a video element, which makes it possible to do computer vision tasks like barcode scanning in a browser. In this article, we are going to write a camera component for Vue using getUserMedia and build a barcode scanning demo...

Xamarin.Forms lets .NET developers create cross-platform mobile apps for Android and iOS in C#. This article demonstrates how to scan barcode and QR code from image file and live video stream using Xamarin.Forms Custom Renderers and Dynamsoft Barcode Reader SDK. In the end of this article, we will also demonstrate...

Web Components are a set of features that provide a standard component model for the Web allowing for encapsulation and interoperability of individual HTML elements. 1 We can define a custom element to use in any HTML environment, with any framework, or with no framework at all. Stencil is a...

Progressive web apps (PWA), simply to say, are web apps that running like native apps on the desktop and mobile platforms. The advantages of PWA include installable, discoverable, linkable and so on. In this article, I’m trying to give a snapshot of a simple PWA barcode reader project built with...

Previously, we created an Angular Barcode and QR Code Scanner. To make it reusable for other Angular applications, we can turn it into an Angular library. This article will show you the process of creating an Angular barcode QR code scanning library, as well as how to integrate it into...

In the previous article, we’ve given a brief demonstration on how to use the capacitor-plugin-dynamsoft-barcode-reader to create a cross-platform QR code scanner using Ionic React. In this article, we are going to use Ionic Vue to create such a QR code scanner. Screenshots of the final results: Home Scanning Home...

If you want to build and test barcode QR code scanner applications for embedded and IoT devices, such as Raspberry Pi, Arduino, Jetson Nano and so on, a physical device is not must-have for development. This article shows how to use Dynamsoft Barcode SDK to build barcode QR code reading...

Noise in barcode images poses a challenge for successful barcode reading. There are many types of noise. Here are some examples: Patterned noise caused by bad printing or scanning.1 Image source Noise caused by taking a photo with digital cameras in low light.2 We can run image processing to improve...

The Ionic framework has shifted its native runtime from Cordova to Capacitor. But we can still create Ionic Angular projects based on Cordova. In this article, we are going to create an Ionic Angular QR code scanning app based on Cordova using the cordova-plugin-dynamsoft-barcode-reader and the ionic wrapper. Preview of...

Dynamsoft JavaScript barcode SDK is compatible with all mainstream web frameworks and web browsers. This article goes through the steps to build Angular barcode and QR code scanner apps with Dynamsoft JavaScript barcode SDK. This article is Part 1 in a 2-Part Series. Part 1 - How to Build Angular...

iOS has added support for getUserMedia in WKWebView since iOS 14.3 and WebAssembly since iOS 11. So it is possible to use the JavaScript version of Dynamsoft Barcode Reader to scan barcodes and QR codes in WKWebView. In this article, we are going to build a demo app to illustrate...

Implementing a Python extension in C or C++ is easy, but building the native module into a Python wheel package for different operating systems and different Python versions is a nightmare. A CPython wheel package is Python-version-dependent, therefore, to make a CPython module work universally for Python 3.x, you have...

Google Chrome has getUserMedia support since v53 and WebAssembly support since v57, which makes it possible to use Dynamsoft Barcode Reader to scan barcodes and QR codes in the web context. The WebView component included in modern Android uses Chrome as its backend, so we can also run a barcode...

Dynamsoft Barcode Reader, as an enterprise-class barcode and QR code SDK, supports many platforms (Windows, Linux, macOS, Android, iOS, Raspberry Pi OS, and Web) and programming languages (Python, Java, Swift, C#, Cpp, and JavaScript). There are many sample projects distributed in Dynamsoft GitHub repositories and official website. To help developers...

In many barcode scanning situations, we only need to select one barcode while there are many other barcodes around it. How to avoid scanning unwanted barcodes and only get the barcode result we want? In this article, we are going to talk about ways to select one barcode from many....

In the previous article, we’ve talked about how to use the Barcode Detection API to create a web QR code scanner. However, not many browsers support the API. So in this article, we are going to write a polyfill for the Barcode Detection API with the JavaScript version of Dynamsoft...

The Web Platform Incubator Community Group has published a Shape Detection API specification. The API aims at detecting features like faces and QR codes from images. It is still in draft status and has limited browser support. In this article, we are going to use the Barcode Detection API included...

A few weeks ago, I released a .NET 6 BarcodeQRCodeSDK package implemented with Dynamsoft C/C++ Barcode SDK. This article demonstrates how to build a Windows desktop barcode and QR code scanner using .NET WinForms, OpenCvSharp, and BarcodeQRCodeSDK. This article is Part 4 in a 4-Part Series. Part 1 - How...

.NET MAUI is a cross-platform framework that allows developers to create desktop and mobile applications from a single codebase with C#. It is currently in preview and the production release is slated for Q2 2022. This article goes through the steps to build a .NET MAUI barcode and QR code...

The Ionic framework has shifted its native runtime from Cordova to Capacitor. But for compatibility concerns and the fact that there are many good Cordova plugins, we can still use Cordova plugins in an Ionic project. We can directly use Cordova plugins with the cordova object, but there is a...

Normally, we scan barcodes and QR codes from live camera streams or static images. But sometimes, we may need to read barcodes from video files, like scanning the barcodes on a long shelf and evaluating the performance of live scanning. A video contains rich information. A state-of-art mobile phone can...

Dynamsoft is the only company that provides enterprise-class Python Barcode and QR Code SDK for Windows, Linux, macOS, and Raspberry Pi OS. The SDK allows developers to quickly build robust command-line, web, and desktop applications that can scan barcodes and QR codes from a wide range of sources. In this...

If you are looking for a JavaScript barcode and QR code scanner SDK, Dynamsoft JavaScript Barcode SDK is no doubt the best. The SDK enables developers to quickly build web barcode and QR code scanner applications with a few lines of code. This article gives you a better understanding of...

While scanning barcode and QR code from camera stream, we need to firstly convert color images encoded in RGB or YUV to grayscale images, then convert grayscale images to binary images before decoding. Operating image pixels takes much CPU time. To speed up image processing, we can utilize GPU. Dynamsoft...

On mobile platforms, HTML5 is not only supported by web browsers, such as Chrome, Edge, Safari, Firefox, and Opera, but also web view UI component that used for building native apps. Therefore, even though you are only familiar with web development, you can easily create excellent mobile apps for Android...

Microsoft is pushing .NET technologies to the next level. It is no doubt that .NET framework will be retired in the near future. This article aims to help C# developers to create Windows desktop barcode and QR code reader application using Dynamsoft Barcode Reader SDK. We will firstly create a...

Microsoft .NET 6 SDK empowers C# developers to build cross-platform DotNet applications for Windows, Linux, and macOS from one codebase. This article describes the steps to build a .NET 6 barcode and QR code decoding library based on Dynamsoft C/C++ Barcode SDK, as well as how to pack the library...

There are many open source JavaScript barcode and QR code reader libraries, but few of them are suitable for enterprise use. The reason is that they do not have a road map for long-term algorithm updates and maintenance. In addition, the performance of pure JavaScript is not good enough. WebAssembly...

In the previous article, we’ve given a brief demonstration on how to use the capacitor-plugin-dynamsoft-barcode-reader to create a cross-platform QR code scanner using web technologies with Capacitor. In this article, we are going to take a step further to create an Ionic React QR Code Scanner. A preview of the...

In previous article, we discussed how to construct a command-line barcode and QR code scanning application using Java and Dynamsoft Barcode Reader. In this article, we will create more fancy applications, such as a desktop GUI application and a web application. In addition, we will import ZXing SDK to make...

There are many open-source and commercial barcode SDKs, but only a few of them can recognize multiple barcode and QR code simultaneously. When you search Google for barcode SDK or Java barcode SDK, Dynamsoft Barcode Reader SDK always appears in the top 5 of the search results. This article guides...

Dynamsoft Barcode Reader SDK supports development of barcode and QR code scanning applications for desktop, mobile and web platforms. The version 9.0 of the SDK is coming to all platforms in the following weeks. The C++ SDK is available for download today. As an enterprise-class C++ barcode and QR code...

In the previous series articles, we’ve created a react-native-vision-camera frame processor plugin of Dynamsoft Barcode Reader to scan barcodes. In this article, we are going to build a QR Code scanner using this plugin to better illustrate how to use it. A preview of the final result: The app consists...

Barcode and QR codes are widely used in many industries, such as healthcare, finance, and education. This article shares how to leverage Dynamsoft barcode recognition technologies to implement an online barcode and QR code scanning app with Python Django. This article is Part 2 in a 3-Part Series. Part 1...

In the previous article, we’ve created a React Native Vision Camera frame processor plugin for Dynamsoft Barcode Reader (DBR). Let’s continue to create the frame processor plugin for iOS. This article is Part 2 in a 3-Part Series. Part 1 - Build a React Native Vision Camera Frame Processor Plugin...

The previous popular react-native-camera project is now deprecated in favor of react-native-vision-camera. Vision Camera offers new APIs, better performance, improved stability and more features. It has a feature called Frame processors, which makes it easy to integrate extra image processing abilities. We are going to create a frame processor plugin...

Creating a virtual camera is useful to test camera-dependent applications. We can use static images or videos as the image source for the virtual camera to test things like barcode reading, text recognition, and document scanning. Adopting pyvirtualcam Creating a virtual camera involves complex driver development. Fortunately, there have already...

This article guides you through the process of creating an enterprise-class PHP barcode extension with Dynamsoft Barcode Reader and PHP source code on Ubuntu 18.04. Environment Ubuntu 18.04 lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.5 LTS Release: 18.04 Codename: bionic Install PHP and Dynamsoft...

Note: This article talks about how to build a QR code scanner native UI component for React Native. If you need to use Dynamsoft Barcode Reader in a React Native project for production, please use the official Dynamsoft Capture Vision SDK. React Native is an open-source UI software framework made...

Jupyter notebook is a web-based interactive computing environment that enables you to create and share documents that contain live code, equations, visualizations and narrative text. If you have installed Anaconda, Jupyter notebook is installed by default. This article demonstrates how to write Python code to scan barcodes in Jupyter notebook....

PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management.1 We can find it on a boarding pass, driver’s license, patient wristband, etc. PDF417 on a US driver’s license: A PDF417 has five parts: start pattern, left row indicator,...

Although almost every Android phone is equipped with cameras, some Android devices, like TV boxes and kiosks, may not have cameras built-in. An easy way to add extra camera functionality to these devices is by connecting with a USB camera if they support USB-OTG. Starting from Android 9, the Android...

Looking for the best Data Matrix SDKs for your application, you’ve come to the right place. Let’s learn about what is Data Matrix and do a benchmark to find out which SDK is the best. Data Matrix is a type of two-dimensional code. It is often used to mark small...

Capacitor is an open source native runtime created by the Ionic team for building Web Native apps. We can use it to create cross-platform iOS, Android, and Progressive Web Apps with JavaScript, HTML, and CSS.1 As an alternative to Cordova, Capacitor delivers the same cross-platform benefits, but with a more...

A few months ago, I published a cross-platform desktop barcode reading application built with Qt Python and Dynamsoft Barcode Reader. The supported input sources include real-time camera stream, image files, and screenshots. In this article, I will set document scanner as the input source. The SDK used for document scanning...

Apache Cordova is a tool to create cross-platform apps from standard web technologies (HTML, CSS, and JavaScript). Its primary purpose is to provide a bridge for native device API access and to bundle for distribution.1 In this article, we are going to use Cordova to build a QR code scanner...

ZeroMQ is a high-performance asynchronous messaging library, aimed at use in distributed or concurrent applications. It supports common messaging patterns (pub/sub, request/reply, client/server and others) over a variety of transports (TCP, in-process, inter-process, multicast, WebSocket and more), making inter-process messaging as simple as inter-thread messaging. 1 ZeroMQ can be used...

There are many QR code tools and SDKs available on the market. For Android development, Google ML Kit is no doubt a good choice, which is free and supports general QR code detection. However, it cannot satisfy the requirement of high-density QR code detection. As a commercial barcode SDK, Dynamsoft...

Scalable Vector Graphics, SVG, is a W3C XML dialect to mark up graphics1. SVG can be created dynamically with JavaScript and injected into the HTML DOM2. Using SVG, it is very easy to draw a graphics in a web page. Below is a polygon example: <svg width="100" height="100" version="1.1" xmlns="http://www.w3.org/2000/svg">...

In our life, we usually take out smartphone to scan QR code. But when we are working on a computer, smartphone may not be the best choice for scanning QR codes that appear on web pages. One reason is the pictures taken from a monitor screen have the Moire’ patterns...

Image annotation is a key step in deep learning. It prepares the data for tasks like image classification, object detection, semantic segmentation, etc. For image classification, we only need to annotate the label. For object detection, we also need the bounding box and for segmentation, we need to annotate objects...

QR Code is widely used in our everyday life. As a two-dimensional barcode, it can store more data than 1D barcodes. It can be captured using a camera and then be decoded using image processing methods. Reading QR codes in the real world is a challenging job. For example, the...

The International Article Number (also known as European Article Number or EAN) is a standard describing a barcode symbology and numbering system used in global trade to identify a specific retail product type. The most commonly used EAN standard is the thirteen-digit EAN-13. 1 The 13-digit EAN-13 number consists of...

A few days ago, I wrote a blog post about how to implement a desktop barcode reader application using Qt and C++. The application only supports still image mode. In this article, I am going to add a webcam support to empower the application to scan barcodes in real time....

Updated in 2021: The Dynamsoft Barcode Reader now has a client-side JavaScript SDK which makes it possible to read barcodes from within the browser. Learn about the JavaScript SDK The Dynamsoft Barcode Reader now has mobile native SDKs supporting Android and iOS. The Dynamsoft Barcode Reader now has an official...

No matter which edition of Dynamsoft Barcode SDK you use, the underlying algorithm interfaces are all implemented in C/C++. To evaluate Dynamsoft barcode SDK precisely, you’d better get started with the C++ libraries. However, there is only a command-line sample available in the SDK package. I have been tired of...

Motion detection can detect whether there is a change in the positions of objects. It can be achieved by many methods. For example, infrared light or laser technology can be used for optical detection. As for image processing methods, there is a basic one by a fixed camera, which compares...

Dynamsoft Camera Enhancer (DCE) provides high-level APIs for developers to quickly create a camera application, such as a barcode scanner and a text scanner. The API surface works across most Android and iOS devices. While it leverages the capabilities of Android’s Camera2 and iOS’s AVCaptureSession, it is much easier to...

The Flutter barcode SDK series is coming to the end. This week, we switch the coding environment to macOS to finish the rest of the plugin platforms - iOS and macOS - using Swift. This article is Part 5 in a 5-Part Series. Part 1 - How to Implement Flutter Barcode Scanner for Android...

In the B4X developing suite, B4J is used to develop desktop apps based on JavaFX or server apps based on Jetty. By default, it cannot be used to create web applications without a server. A third-party library, BANano, makes this possible. It can transpile everything you write in B4J to...

This article is Part 2 in a 3-Part Series. Part 1 - Cross-Platform Barcode Reader with B4X Part 2 - B4X Live Barcode Scanner | Scan QR Codes From Camera Stream Part 3 - Web Barcode Reader using B4X In the previous article, we created a Dynamsoft Barcode Reader library...

For the past several weeks, the Flutter plugin of Dynamsoft Barcode Reader has covered Windows, Android and Web. This week, we go through the plugin implementation for Linux. Similar to Windows, we combine Dart and C++ code for Linux. The unexpected thing is the C++ data types of Flutter defined...

B4X is a set of rapid development tools which can be used to develop apps for all the major mobile and desktop platforms. It has four products: B4A, B4i, B4J and B4R, which aim at Android, iOS, Java (desktop with JavaFX, server and Raspberry Pi) and Arduino development. Apart from...

Let’s continue discussing scanning QR codes at a distance. In this article, we’ll talk about resolution. Using the camera’s highest resolution Most of the current smartphones’ video stream resolution can be set to 1080P (Full HD) and many of them support 4K (Ultra HD) video capturing. The higher the resolution...

Have you had such an experience that you need to scan a QR code displayed on a screen in the front of a meeting room, but you sat in the back? You opened the barcode scanning app and aimed it at the code, but it just couldn’t read the code....

This week, I made a new attempt, integrating Dynamsoft JavaScript Barcode SDK into the ongoing Flutter barcode plugin project. It is exciting to be capable of building web barcode reader apps with the same decodeFile() method used for mobile and desktop development. This article is Part 3 in a 5-Part...

Last week, I wrote a step-by-step tutorial sharing how to build a Flutter barcode SDK plugin with Dynamsoft Barcode Reader. The platform-specific code of Android is done. This week, I am going to focus on Windows desktop. Since the Flutter desktop plugin development is still on the early stage, there...

About two years ago, I wrote an article sharing how to build a Flutter barcode plugin with Dynamsoft Barcode Reader step by step. At that time, Flutter was still under development and only supported Android and iOS. Nowadays, Google has released Flutter 2, which allows developers to build apps for...

Camera control and barcode reading are two essential parts of a barcode scanner. Dynamsoft Barcode Reader is an advanced barcode reader with an easy-to-use Android library. The implementation of the barcode reading function is simple and straightforward. Making a good camera app, however, is not easy. In Android, there are...

The accuracy of optical character recognition (OCR) is sensitive to text orientation. If a text image file is rotated by 90°, 180° or 270°, and there is no EXIF information, it would be challenging to doing text recognition. In case of text around barcode, the combination of Dynamsoft Label Recognition(DLR)...

This article will guide you through the creation of a JavaFX GUI barcode reading application (as shown below) using Dynamsoft Barcode Reader SDK (DBR) and vlcj. JavaFX is an open-source, next-generation client application platform for desktop, mobile, and embedded systems built on Java.1 vlcj is a Java framework to allow...

Dynamsoft provides Java Barcode SDKs for both mobile and desktop development. The mobile edition is distributed as an Android AAR package, and the desktop edition is distributed as a JAR package. This article aims to help developers who want to build desktop or server-side barcode scanner applications in Java or...

Originally designed for the automotive industry1, QR code (abbreviated from Quick Response code) has become popular in various usage scenarios. QR codes can encode richer content than 1D barcodes, from website URLs to even a small image. They can be displayed on screens and printed on posters, package boxes, etc....

Three years ago, I created a CMake project, aiming to build a C/C++ project with Dynamsoft Barcode Reader on Windows, Linux, and macOS. Today, as the world’s top barcode SDK, Dynamsoft Barcode Reader has extended to more operating systems and CPU architectures: ARM32 Linux: Raspberry Pi ARM64 Linux: Jetson Nano...

Qt Designer is a Qt tool for building cross-platform graphical user interfaces (GUIs) with Qt widgets. In this article, I will use the Qt designer to create an advanced GUI Python barcode and QR code reader with Dynamsoft Python Barcode SDK for Windows, Linux, macOS, and Raspberry Pi OS. The...

Someone may be curious about whether Intel-based Python apps can work well on Apple M1 Mac. I recently did a test with Dynamsoft Python Barcode SDK, which is built with native x86_64 libraries and CPython. It turned out that there was no issue using pip to install the wheel package...

While scanning single or multiple barcodes with a barcode SDK, most of the developers only concern about the trade-off between decoding speed and recognition accuracy, for they cannot get other data. Since from version 8.0, Dynamsoft exposes more parameters and intermediate results (E.g., grayscale image, binary image, barcode localization results,...

Apple announced new Mac models with Apple M1 chip recently. Although Dynamsoft has not released an Apple Silicon version of Dynamsoft Barcode Reader SDK yet, I am curious how will x86_64 barcode SDK perform under Rosetta 2. In this article, I will build a simple command-line QR Code reader app...

LabelImg is a free and open-source image annotation tool written in Python and Qt5. It supports Pascal VOC format and Yolo format that are commonly adopted by mainstream machine learning frameworks. If you are interested in barcode object detection, you can use the tool to annotate different barcode symbologies with...

Electron, one of the most popular cross-platform desktop application frameworks, has been used in numerous famous apps. With web technology, developers could rapidly build a product for Windows, macOS, and Linux. In this article, we would use Electron to build a barcode decoding and scanning app with Dynamsoft Barcode Reader....

The barcode localization algorithm is an essential step for barcode recognition within an image. However, for static images, the bigger size images have, the much more time the algorithm takes. Plus, the success rate of the algorithm may be interfered by the background color and the foreground color. It is...

RISC-V is a free and open RISC instruction set architecture. The RISC-V community and ecosystem are boosting and will flourish in the next couple of years. To facilitate barcode app development for RISC-V, Dynamsoft has kicked off the build of RISC-V barcode SDK. In this article, I will show you...

Since from version 7.6.x, Dynamsoft Barcode Reader started to support ARM64 (Previously, ARM32 only). It is good news for developers who aim to build barcode reader app on embedded computing boards like Raspberry Pi and Nvidia Jetson Nano. In this article, I will guide you through the process of building...

While using Salesforce, your management system can conveniently extend new functionalities by installing apps from Salesforce AppExchange - the Salesforce store. How can you build a Salesforce app by yourself? In this article, I will share how to create a barcode reader app for Salesforce from scratch. Requirement Dynamsoft JavaScript...

Blazor is a web framework developed by Microsoft. It enables developers to create web apps using C# and HTML. However, calling existing JavaScript API is inevitable while developing a Blazor project. This article will help web developers who want to build web barcode and QR code reader apps using Blazor...

Many enterprises like to use Dynamsoft Barcode Reader SDK due to its flexible parameter configuration and powerful decoding capability for multiple barcodes. In this article, let’s take a glimpse of the barcode SDK template and the possible way to optimize the decoding performance from a developer’s angle. How to Configure...

A few weeks ago, I wrote an article sharing how to read driver’s license information from PDF417 on Android. Comparing to building an Android native camera app, building a web camera app is much easier. In this article, let’s take a glimpse at a JavaScript sample, which is implemented with...

Start and stop characters are defined as part of linear barcode (1D barcode) standard. However, you may suffer from some nonstandard 1D barcode symbologies in which the start and stop characters are somehow changed. In this article, I will take Code39 as an example, demonstrating how to decode nonstandard 1D...

I recently purchased a Raspberry Pi 4 (4GB model) and an I2C OLED display module. In this article, I will share how to implement a C/C++ barcode reader project on Raspberry Pi 4 from scratch. Raspberry Pi 4 Specifications Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz...

According to the American Association of Motor Vehicle Administrators (AAMVA) specification, PDF417 symbology is used for storing personal information on US driver’s license. In this article, I will use Google mobile vision APIs to recognize a driver’s license.  Besides, I will create a similar Android barcode reader app to extract...

When you want to release a proprietary tool or SDK, which is not open source, to Linux platforms, it is a nightmare. You have to make multiple packages and do more tests to guarantee compatibility for different Linux distributions. Is it possible to only create one pre-built package? We can...

A dot code is a 2D barcode symbology composed of disconnected dots. It is widely used in the tobacco industry. Recently, Dynamsoft rolled out barcode reader SDK v7.4, which added DotCode support. In this post, I will share a command-line app and a GUI app, demonstrating how to build Java DotCode...

In Dynamsoft Barcode Reader SDK, there is a fancy webcam barcode sample called BarcodeReaderDemo that supports reading barcodes from disk files, TWAIN-compatible hardware scanners, and USB webcams. However, one thing you have to know is the functionality of acquiring images from peripheral devices relies on Dynamic .NET TWAIN, which is...

Dynamsoft recently added a new panorama module to barcode SDK, aiming to provide a brand-new solution for warehouse and inventory management. In this article, I will try my best to guide you through the usage of Dynamsoft Panorama version 1.0, though the first version is not stable and optimized yet....

Previously, I shared an article demonstrating how to use Tesseract Python OCR to recognize the accompanying text of a 1D barcode. In this article, I will change the programming language to JavaScript, creating a JavaScript barcode scan app integrated with Tesseract JavaScript OCR. How to Use JavaScript OCR to Recognize...

When creating a barcode reader app with a free barcode SDK, you may come up with ZXing instantly. ZXing is an open-source barcode reading and decoding library implemented in Java. There are some third-party projects, either ports or bindings, available for other programming languages. So if you want to create...

When scanning barcodes, the recognition rate is affected by image quality. If a barcode image is severely damaged, the barcode algorithm may fail to work. Fortunately, most of the linear barcodes (1D barcodes) are printed with corresponding texts. OCR (optical character recognition) could be a complement to the barcode algorithm...

MyGet is a universal package manager that allows you to create custom package feeds for Python, Maven, NuGet, npm, Bower, PHP, Vsix, and Ruby Gems.  For me, the most significant advantage of using MyGet is I can overwrite the package with the same version number comparing to other package repositories...

In India, the Aadhaar card is used to store people’s biometric and demographic data. This article shares how to create a simple web app to decode the QR code printed on the Aadhaar card using Dynamsoft JavaScript SDK, as well as how to extract the information from the barcode results....

WASI is a modular system interface, which aims to build runnable .wasm modules for any WASI-compliant runtime, not only for Node.js and web browsers. Although WASI is still in development and not stable yet, it is available for some experimental projects. In this article, I will share how to use...

When evaluating an image processing and recognition SDK, image dataset is vital for benchmarking the performance. Google is absolutely the best place for finding and downloading required images.  An automation tool would be handy for getting amounts of image files rapidly. In this article, I will share how to use Python...

I think Flutter is vital for developers. Not only it supports fast building Android and iOS apps from a single codebase, but also it is used for building the upcoming Google Fuchsia apps. Like React Native and Cordova, the Flutter ecosystem consists of amounts of plugins, which empower Flutter apps,...

Dynamsoft Barcode Reader 7.0 brings a set of thread-based APIs for continuous frame management and corresponding barcode decoding. It extremely simplifies the programming complexity, especially for Python. It is known that Python’s GIL (Global Interpreter Lock) affects the performance in a multi-threaded scenario. Running computation intensive tasks in Python thread...

Previously, I shared an article demonstrating how to use Camera2 APIs and Dynamsoft Barcode Reader to build a simple Android barcode reader app. In that demo project, the barcode decoding part is implemented in Java, which apparently has room for improvement. If we can get the pointer to the native...

Webpack is a JavaScript module bundler. It is widely used in web frameworks, such as React and Angular. This tutorial shows how to implement a simple web barcode reading app with webpack and Dynamsoft JavaScript Barcode library. What You Should Know Setting Up a Basic Project with Webpack Create a...

Assume you apply barcode technology to the logistics conveyor belt for scanning parcels. A problem you may face is how to recognize barcodes from blurred images. Although we can use advanced algorithms to deal with this complicated case, we’d better improve the image quality as possible as we can. A...

Someone asked me how to create a real-time web barcode scanning app with a webcam. Is it hard to implement it? I’ve written an article sharing how to integrate Dynamsoft JavaScript Barcode Reader SDK into a React project. The remaining work is to make a webcam component. Since there is...

In my previous article, I shared how to use PyQt and Dynamsoft Barcode Reader to create a simple Windows-styled GUI app to read barcodes from image files. Now I am going to add a little bit more code to scan barcodes from the webcam video stream. Showing Webcam Video Stream using PyQt...

AngularDart, similar to Angular built with TypeScript, is a web app framework written in Dartlang. It finally compiles to JavaScript.  In this article, I will share how to use Dynamsoft JavaScript Barcode SDK to create a simple web barcode reader app using AngularDart on Windows 10. What You Should Know...

This article shows how to use Dynamsoft C++ barcode reader SDK to create a Window runtime component, as well as how to use the WinRT component and JavaScript to build a UWP app on Windows 10. Prerequisites Dynamsoft Barcode Reader SDK 6.4 Visual Studio 2017 Building WinRT Component with C++ DLLs...

Node-RED is a flow-based programming tool built-on Node.js. It provides a browser-based editor that helps users to create awesome applications by wiring different nodes. This article shares my experience of building a barcode node with Dynamsoft Barcode Reader on Windows. Installing and Running Node RED on Windows 10 Install Node-RED:...

Deprecation Note: Please use the Dynamsoft Capture Vision SDK in your React Native project to scan barcodes for production. If you are using React Native, you can quickly create a camera app with React Native Camera. In addition, React Native Camera component supports barcode scanning, face detection, and text recognition....

Some developers used JNA to call native C/C++ interfaces of Dynamsoft Barcode Reader in Java program. The app ran slowly and sometimes crashed. Based on the use case, I created a simple project for building JNA and JNI on Windows. The sample does not only show how to invoke native code but...

A few days ago, I accepted a new challenge of creating a simple command line barcode reader using Rust and Dynamsoft Barcode Reader SDK. Rust is a system programming language similar to C++. The learning process did not go through smoothly as I expected. It is not as easy as...

The article is not about how to create Java native methods invoking C/C++ APIs. It aims to help developers to build a jar package containing JNI shared library, made with Dynamsoft Barcode Reader, for Windows, Linux, and macOS from scratch. I will demonstrate how to create JNI shared libraries with...

Web Worker is a way to run JavaScript in background threads. The worker thread can perform some heavy works without interfering with the user interface. This article shares how to load WebAssembly and invoke Dynamsoft JavaScript barcode APIs in a web worker. Web Worker for WASM If you have tried the ‘hello...

WebAssembly (Wasm) is a revolutionary technology for Web development. It aims to execute at native speed in web browsers. With WebAssembly, it is convenient to port C/C++ code for web client and server applications. Dynamsoft Barcode Reader 6.2 is the most potent barcode SDK ever, and its WebAssembly edition is on the...

ZXing is probably the most popular open source barcode SDK in the world. The library is written in Java and now has been ported to C++, .NET, Python, Objective-C, PHP and some other programming languages. Because ZXing is free, many developers would like to build barcode scanning apps with it....

When searching for barcode SDK online, you can find lots of free and commercial SDKs. However, there are only a few of SDKs cross-platform, which is why Dynamsoft Barcode Reader is outstanding. Dynamsoft Barcode Reader SDK supports Windows, Linux, macOS, Android, iOS, and Raspberry Pi. Currently, the latest DBR 6.0...

If you have tried out Dynamsoft Barcode Reader 6.0, you may have noticed the new template feature. The new SDK version supports importing parameters from JSON-format template files. How to create the template files? One way is to visit the barcode online demo, select some arguments and then download the...

Last week, I had successfully built JavaScript and WebAssembly ZXing barcode SDK. In this post, I will use the pure JavaScript barcode SDK to create a simple client-side HTML5 barcode reader app, which works in any WebRTC supported web browsers. What If ZXing Cannot Satisfy Performance Requirements? Try Dynamsoft JavaScript...

Chrome OS, developed by Google, is a light-weighted operating system based on the Linux kernel. It uses Chrome web browser as the user interface that primarily supports web applications released as Chrome extensions. However, Chrome extension is not fresh to me. When running Chrome OS in a virtual machine, I...

Last week I made a warm up for Kotlin, getting started to learn tutorials and reference. Now it is time to take the next step. Since Kotlin is hundred percent compatible with Java, we can use both programming languages without barriers in one project. In this article, I want to...

If you always stay tuned to Dynamsoft Barcode SDK, you should have noticed that starting with version 5.1, the SDK includes a JavaScript library which is similar to Dynamic Web TWAIN. The article aims to help developers get familiar with the relevant JavaScript Barcode APIs and build web barcode reader...

Last week, I shared how to build a simple React Native component from scratch. Now I want to do something more complicated. I will link Dynamsoft’s Barcode Reader mobile SDK, which was released as an AAR bundle file, to a React Native Barcode project and write some Java code as...

Dynamsoft C++ Barcode SDK supports ARM32 and ARM64. This article goes through the steps to create C/C++ barcode and QR code reader application on Raspberry Pi. To get better performance, it is recommended to use Raspberry Pi 4. The project build can work on both ARM32 and ARM64 Raspberry Pi...

Raspberry Pi has been widely used in industrial environments. For instance, you can make a barcode scanner with Raspberry Pi and camera. This article will be useful for developers who want to create Node.js barcode reader applications for IoT devices. I will share how to use Dynamsoft barcode SDK for...

Dynamsoft has deployed a REST web service for barcode detection. This post shares how to call the service by sending HTTP POST request using Golang. Barcode Detection in Golang Environment IDE: JetBrain Gogland. Go 1.7.4. Windows 10. Workspace structure: <GOPATH> - src - bin - pkg Settings: GOROOT=E:\Go GOPATH=g:\gowork Basic...

When developing an Android project with Xamarin, I didn’t get any trouble. However, it is totally a different experience when building an iOS app with Xamarin – it is more complicated. In this article, I will share my experience of binding DynamsoftBarcodeReader.framework using Xamarin. Dynamsoft Xamarin Barcode SDK is Available...

Previously, I wrote an article Raspberry Pi Barcode Scanner with Webcam and Python illustrating how to build a simple barcode scanner using Dynamsoft Barcode Reader SDK and OpenCV from scratch. The method decodeFile() was used for detecting barcodes from an image file. To use the API, you have to write...

When building a .NET application to read barcodes on Windows via camera, you need two types of SDKs - one for webcam, and the other for barcodes. In this post, I want to share how to use .Net webcam and barcode SDKs to create a simple WinForm barcode reader application...

Previously, I shared two articles demonstrating how to build a Raspberry Pi barcode scanner in C/C++ with Dynamsoft Barcode Reader SDK, and how to optimize the code with thread. The hardware I used only includes Raspberry Pi 2 and Webcam. Now it is time to have fun with GPIO (General-purpose...

When building mobile barcode scanning apps for Android or iOS, developers could either choose open source SDKs – ZXing and ZBar, or some commercial mobile barcode SDKs. If you are an Android developer and have installed Android Play Services SDK level 26 or greater, it is convenient to create Android...

Dynamsoft Barcode Reader C++ SDK is available for Windows, Linux, and Mac (iOS and Android editions are coming soon). I have shared an article that illustrates how to build webcam barcode reader in Python. In this tutorial, I’ll use a different C++ API to implement barcode scanner applications for Windows...

Previously, I shared an article describing how to create an online barcode reader using Node.js, which turned Raspberry Pi into a web server. Today, I want to do another experiment – building a  Raspberry Pi barcode scanner with a USB webcam. For taking HD video and photo, you can choose...

Node.js is available for all platforms including IoT devices like Raspberry Pi. In this post, I will demonstrate how to quickly create an online barcode reader on Raspberry Pi using Node.js and Dynamsoft Barcode Reader SDK. Node.js for Raspberry Pi If you flashed Rasbian Jessie, the latest Linux ROM for...

Previously, I shared an article How to Make Node Barcode Reader Addon on Linux, which illustrates how to create a node barcode addon by wrapping Dynamsoft Barcode Reader SDK on Linux. Since Node.js was born for developing network programs, let’s take a glimpse of how to create a Web barcode...

As cloud computing market continues to skyrocket, more and more IT companies tend to release cloud APIs for developers. Most cloud APIs are exposed via REST (Representational state transfer) Web service. In this post, I will illustrate how to create a barcode reader with Node REST Framework Restify and Dynamsoft...

Probably many Windows developers have upgraded operating systems to Windows 10. On Windows 10, Microsoft suggests developers create Universal Windows Apps (UWP) for a variety of devices, including PC, tablet, mobile phone, Hololens and so on. For development, I wonder whether legacy C/C++ SDKs can also seamlessly work on Windows...

ZXing is an open-source, 1D/2D barcode image processing library implemented in Java. The supported barcode formats include UPC-A, UPC-E, EAN-8, Code 93, Code 128, QR Code, Data Matrix, Aztec, PDF 417, etc. Besides the Java version, developers can leverage other ported projects such as QZXing, zxing-cpp, zxing_cpp.rb, python-zxing and ZXing...

Do you know which programming language is currently ranking first on GitHub? It is JavaScript! JavaScript is not only used for HTML5 Web application development, but also for server-side programming with runtime environment Node.js. With npm, the package manager for Node.js, it is so easy to install any Web frameworks...

If you have upgraded to the latest HTML5 version of DWT(Dynamic Web TWAIN), probably you have noticed that it only supports 1D barcode reading. Although the 2D barcode SDK has not been officially released yet, it is coming soon. Today, I’d like to demo how to build a Web application...

Recently, I found an excellent jQuery plugin jquery.qrcode.js, which is written by Jerome Etienne. In this article, I would like to share how to use the QR code plugin to implement a free online app with Google App Engine. You can try my demo http://dynamsoft-test.appspot.com/. How to Implement QR Code...

Barcode scanning, especially QR code scans, are now widely used in various applications. This includes advertisements, newspapers, social networks, signage, and so on. The growth of QR codes is in large part due to the smartphone market’s booming growth. As a result, scanning technology tends to be more and more useful...