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.
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 (Dart VM) applications. In this article, I will share how to write my first Dart console application with Dynamsoft barcode RESTful web service.
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.
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 firstly write image buffer that obtained by OpenCV API to a file. Because the I/O operation takes too much time, this API is not good for real-time barcode detection from webcam video stream. Considering this scenario, I have added a new Python API decodeBuffer(). In this article, I will illustrate how to create and use the new API.
C# is the preferred programming language for developing Windows applications. However, Microsoft only provides .NET camera APIs for UWP applications. If you plan to write a classic Windows desktop application using a webcam, it will be complicated to create a C/C++ wrapper for DirectShow Win32 APIs. Dynamic .NET TWAIN is an SDK that supports programming for both scanner and webcam. In this article, you will see how easy to build a webcam application with the SDK. In addition, you can learn how to detect and recognize barcodes from the video stream with Dynamsoft Barcode Reader SDK.
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, it will be tricky to pass the data. In this article, I will share how to read camera stream with OpenCV-Python and detect barcode with Dynamsoft C/C++ Barcode SDK.
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.
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 in C#.
Dynamsoft aims to make barcode SDK available for all mainstream platforms, including Windows, Linux, macOS, iOS, and Android. There are many developers devoted to developing mobile barcode scanner app for iOS and Android platforms. To expedite the developing work, some of them may rely on a powerful detection and recognition libraries, like Dynamsoft mobile barcode SDK. In this post, let’s take a glimpse of how to use barcode SDK for Android to build Android barcode scanner with a few lines of code.
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 input/output). Assume you want to get rid of the display screen for making a robot with power bank, wheel, and webcam. And you need to use some indicators to monitor the status of barcode recognition. How to make it with GPIO pins and other peripherals?