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Dynamsoft Barcode SDK for Android is distributed as an AAR file. This article aims to help C# developers, who want to build mobile barcode apps with Xamarin, to use the AAR file in Visual Studio 2015. Dynamsoft Xamarin Barcode SDK is Available on NuGet SDK: Xamarin.Dynamsoft.Barcode.Android Examples: https://github.com/dynamsoft-dbr/xamarin If you want to...
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NV21 is the default image format used by Android camera. Assume you want to save the data and view it as a BMP file on PC, how to write code in Java without Android image APIs? Let’s do it from scratch. What is NV21 NV21 is a kind of YUV...
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Visual Studio Code - a source code editor for Windows, Linux and macOS released by Microsoft - is getting more extensible and customizable. It is interesting to build an extension yourself. In this article, I will share how to create a simple HTML snippet extension for VS Code. Snippet for...
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If you want to open webcam stream in a web browser, what technology will you choose? Probably many developers’ answer is HTML5. Yes, with the JavaScript API getUserMedia, it will be pretty easy to open webcam within web browsers. However, the API is not supported by some old web browsers like...
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Dynamic Web TWAIN for Raspberry Pi is on Dynamsoft Labs now. No matter whether you are a Dynamic Web TWAIN user or not, if you want to build a document scanning and management system with low cost, you should experience this edition. Build a smart and wireless scanner with a...
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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...
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Dynamic Web TWAIN for Linux was introduced on 11/03/2016. It enables interaction with document scanners from within a browser on Linux. The underlying technology is SANE (Scanner Access Now Easy). We do not need to write any code other than JavaScript when using Dynamic Web TWAIN. Learn how to to...
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It is known that getUserMedia, the API defined by WebRTC, is the main method for accessing media capture devices such as webcam and microphone in web pages. The compatible desktop web browsers include Chrome, Firefox, Opera, and Edge. This article will share the resources for learning how to capture and...
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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,...
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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...