Dynamsoft Developer Blog

The International Mobile Equipment Identity (IMEI) is a numeric identifier, usually unique, for 3GPP and iDEN mobile phones, as well as some satellite phones. It is usually found printed inside the battery compartment of the phone but can also be displayed on-screen on most phones by entering *#06# MMI Supplementary...

Solidjs is a web framework like React. Instead of using techniques like virtual DOM, it compiles its templates to real DOM nodes and updates them with fine-grained reactions. In this article, we are going to build a barcode and QR code scanner using Solidjs. Dynamsoft Camera Enhancer is used to...

Barcode reading is a complex task with different challenging scenarios. To suit most scenarios, Dynamsoft Barcode Reader provides rich image processing parameters which users can adjust. There are two ways to adjust the parameters. One is via the code: // JavaScript example to set the barcode format to QR code...

In the previous article, we’ve built a NativeScript plugin for camera preview. In this article, we are going to create a NativeScript plugin for Dynamsoft Barcode Reader which can be used for scanning barcodes or QR codes. This article is Part 2 in a 2-Part Series. Part 1 - How...

Node-RED is a flow-based programming tool built-on Node.js. It provides a browser-based editor that helps users create awesome applications by wiring different nodes. This article shares how to build a barcode QR reading node with Dynamsoft Barcode Reader. Node-RED Installation Install and run Node-RED. Windows npm install -g --unsafe-perm node-red...

If you are looking for the specification of South African driving license, you may be disappointed. There is no official reference except for the Stack Overflow Q&A, an incomplete document - ZA Drivers License format and an C# open source project. The Stack Overflow Q&A provides the RSA public key...

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...

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...

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...

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...

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...

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...

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...

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...

A week ago, I made an experiment to test the QR code detection performance with YOLOv4 on Android. The inference time of running the YOLOv4 model on CPU is more than 100ms, which does not reach my expectation. Since Android Neural Networks API (NNAPI) provides hardware acceleration for TensorFlow Lite...

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,...

As an Android developer, if you want to pursue better application performance - reducing memory copy and garbage collection, you can migrate some of your code from Java/Kotlin to C++. In this article, I take the QR scanner as an example. I will use NDK camera2 API to implement the...

Dynamsoft Barcode Reader SDK allows developers to customize algorithm parameters against different barcode scanning scenarios. There are some pre-configured parameter templates for decoding performance. No matter you pursue ultimate decoding speed, ultimate decoding accuracy, or the tradeoff between speed and accuracy, there is always an appropriate one. Since the parameters...

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...

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...

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...

Dynamsoft Barcode Reader currently does not support WebP images. If you download a QR code image encoded with WebP format, how can you recognize the QR code with Dynamsoft Barcode Reader? In this article, we combine libwebp and Dynamsoft Barcode Reader to fulfill decoding QR code from WebP images. Installation...

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...

Introduction Accuracy is a key metric of barcode reading SDKs. Given an image, a barcode engine should correctly detect whether one or more barcodes exist. If barcodes exist, the percentage of correct values returned dictates the accuracy.   As a software developer, choosing a barcode engine that has the best speed,...

When using a QR code reader or scanner SDK, we primarily focus on the detection speed and recognition accuracy. There are many factors that may affect the performance of the QR code detection SDK. The factors can be approximately classified into two categories: image quality and algorithm performance. In this...

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....

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...

As the original writer of Dynamsoft Barcode Reader for Python (pip install dbr), I prefer using CPython and Dynamsoft C/C++ Barcode SDK to bring barcode detection APIs to Python. However, Ctypes is also worth to be explored. It allows developers to call C functions of shared libraries in pure Python...

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...

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 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...

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...

If you want to build a cross-platform GUI app with Python and Qt, you can either use PyQt or PySide. Both of them are Qt bindings for Python. The main difference is the license: PyQt5 is released under GPL or commercial, whereas PySide2 is released under LGPL. Since PySide2 is...

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,...

In the warehouse management system, Drone can be used to automate barcode scanning for inventory counts. To learn drone piloting and try barcode scanning in the air, I bought Ryze Tello, which is a mini drone powered by DJI. In this article, I will share how to detect and decode...

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...

In the past two weeks, I trained a custom YOLOv3 model for QR code detection and tested it with Darknet. In this article, I will use OpenCV’s DNN (Deep Neural Network) module to load the YOLO model for making detection from static images and real-time camera video stream. Besides, I...

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...

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...

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...

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...

Previously, I wrote an article showing how to build a DotCode reader in Java. I also updated my C# barcode demo to make it support DotCode decoding recently. In this article, I will share a new webcam scanner sample implemented in C++. Reading DotCode with Dynamsoft Barcode SDK Download Dynamsoft...

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....

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 I was using CPython to create the Python barcode extension with Dynamsoft Barcode Reader, I had to take concern for the compatibility of Python versions. However, I’m reluctant to install all Python versions in my operating system. To test the compatibility of my Python barcode app in Windows, I...

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...

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...

Direct Part Marking (DPM) is a process to mark equipment with some information, such as barcodes, permanently. The typical DPM barcode symbologies include DataMatrix and QR code. Since version 7.2, Dynamsoft Barcode Reader SDK has been capable of decoding DPM barcodes. In this article, I will share how to create...

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...

Dynamsoft Barcode Reader is an enterprise-class barcode SDK implemented in C/C++. Although the SDK is available for Windows, Linux, and macOS, there is only one Windows sample showing how to invoke the latest video APIs in version 7.x. To make developers experience the example in Linux or other platforms, I...

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...

If you want to quickly create a walking robot, you can use the Lego Boost. In this post, I will share how to use a webcam, Lego Boost, and Dynamsoft Barcode Reader SDK to make a robot for scanning barcodes. The programming language used in this article is Python. What...

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...

Qt for Python enables developers to quickly create GUI apps on Windows, Linux and macOS with one codebase. In this article, I will share how to build a Python barcode reader with Qt on Windows. Since Dynamsoft Barcode Reader SDK is also cross-platform, it is easy for you to reuse...

In my last article, I shared how to build WinRT component with Dynamsoft Barcode Reader C++ SDK. This article shows how to use the generated Dynamsoft.dll and Dynamsoft.winmd files in a Cordova plugin project for building Windows 10 apps. Installation Dynamsoft Barcode Reader SDK 6.4 Visual Studio 2017 Cordova My...

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...

Previously, I demonstrated how to use OpenCV and Dynamsoft Barcode SDK to build a Python barcode reader. There’s one problem that when barcode decoding takes a long time, the webcam video didn’t play smoothly. I also tried multithread but failed to tackle the issue either due to the Python GIL(Global...

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....

Previously, I wrote an article sharing how to build Python barcode extension using C/C++ with Dynamsoft Barcode Reader SDK. If Python developers want to use the extension, they have to make it by themselves. It is a little bit inconvenient. A better way is to package the extension and distribute...

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...

OpenCV is written in C++.  If you install OpenCV library on Windows, you will see OpenCV officially provides wrappers for Python and Java but not for C#. Fortunately, there are many .NET open source projects for wrapping OpenCV C++ APIs, and thus we don’t need to write a wrapper from...

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...

When porting code from Python 2 to Python 3, it is not as easy as you imagined no matter whether the primary programming language is Python or C/C++. Re-compiling the Dynamsoft Barcode extension for Python 3 is a challenge because I only found a few of documentation and resources online....

According to the statistics of Stack Overflow traffic, Python is the fastest-growing major programming language in high-income countries. Python seems to be promising in the future. I have noticed that many of the developers who would like to use Dynamsoft Barcode Reader SDK for Linux are more interested in Python...

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...

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...

Cordova is a mobile application development framework that enables developers to build Android, iOS and Windows Phone apps using HTML5, JavaScript, and CSS3. It uses web views to render UI elements instead of the platform’s native UI framework. Cordova can be extended to add more functionalities with plugins. There are...

I just finished reading the article - Native Extensions for the Standalone Dart VM. In this post, I will share my experience about how to build a Dart native extension from scratch with Dynamsoft C/C++ barcode SDK on Windows. Why Asynchronous Extension Dart is a single-threaded programming language, similar to...

A few months ago, Google announced a new operating system named Fuchsia. It was my first time to hear about Dart, which is the primary programming language for Fuchsia. Dart is a programming language designed by Google.  It is used to build the web (Dart webdev), mobile (Flutter) and server...

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...

OpenCV officially provides both C++ and Python APIs for developers. Most of the time, developers just need to use one kind of programming languages to read, write and process images with hundreds of computer vision algorithms. However, if you want to use OpenCV Python APIs with an extended C/C++ library,...

Previously I shared how to use Touchless, which wraps the win32 APIs of DirectShow, to control webcam in C#. In this article, let’s take a further step to see how to use the more complicated DirectShow.NET APIs to capture the video stream and read barcode from preview frames on Windows. Resources for Learning DirectShow.NET DirectShow.NET...

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...

Apache Cordova (formerly PhoneGap) is a mobile application development framework that enables developers to build mobile apps using CSS, JavaScript, and HTML. Different from Xamarin that converting C# code to native apps, Cordova composes apps with hybrid code - all UI layouts are rendered with web technologies via web views...

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...

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...

Building desktop applications is not as easy as developing web applications because it is platform-related. You may need to learn C# for Windows, C/C++ for Linux, and Swift for Mac. For Java developers, it is convenient to create universal desktop applications in Swing and JavaFX. What about web developers, who...

Last week, I shared how to build PHP extension on Linux, as well as how to make a simple PHP barcode reader with a few lines of PHP code. In this post, I will illustrate how to implement an online barcode reader with the custom PHP extension, and how to...

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...

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...

This article aims to share how to use the QR code plugin to implement a free online app with Google App Engine. How to Implement QR Code Generator Download jQuery QRCode plugin. Download JavaScript UTF-8. Create a project named qrcode, and create a file called qrcode.html. Include plugins: <script src="js/jquery.min.js"></script>...

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...