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.
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#.