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 also charged. Fortunately, the image viewer library and image codecs library are free to use. In this article, I will share how to remove the scanner module from the project and use DirectShow for webcam control.
Read moreTag: Barcode
Panorama Stitching: New Technology for Barcode Industry
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.
Read moreHow to Empower JavaScript Barcode Scan with Tesseract.js OCR
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.
Read moreHow to Benchmark Barcode SDK Performance in Python
On StackOverflow, you may have seen this kind of question: why some open-source barcode SDK failed to decode some barcode? Usually, there are three optional workarounds: improve the input image quality, improve the barcode algorithm, or find a better barcode SDK. ZXing and ZBar are probably the most-welcomed open-source barcode SDKs, but their algorithms rarely enhanced over the past years. Why not use commercial barcode SDK if free SDK is not ideal? Last week, I published an article demonstrating how to use ZXing and ZBar in Python. In this article, I will show you how to use Dynamsoft Barcode Reader in Python, as well as compare its performance to ZXing and ZBar.
Read moreHow to Use Python ZXing and Python ZBar on Windows 10
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 a Python barcode reader, you can use Python ZXing, which is a Python wrapper for invoking ZXing Java class. If you care about the performance, we can use Python ZBar, a Python wrapper for the ZBar C++ code, as a comparison.
Read moreHow to Run and Debug Python Barcode App in Docker Container
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 picked Docker container as the workaround.
Read moreHow to Use Tesseract OCR as an Assist for Barcode Scan
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 barcode) are printed with corresponding texts. OCR (optical character recognition) algorithm could be a complement to the barcode algorithm in such a scenario. In this article, I will share how to use Tesseract OCR to boost the barcode scan.
Read moreHow to Use MyGet to Manage and Distribute Packages
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 like PyPi and npmjs. This article shares how to upload Dynamsoft Barcode Reader packages to MyGet and how to install the packages for relevant projects.
Read moreGUI Barcode Reader: Porting .NET Framework to .NET Core
Last month, Microsoft released .NET Core 3.0 that allows developers to port Windows Forms and Windows Presentation Foundation (WPF) projects to the .NET Core projects. However, the feature is still Windows-only, which may disappoint someone who wants to create cross-platform GUI apps based on .NET Core. In this article, I will share how to create a simple Windows GUI barcode reader app on .NET Framework, and then port it to .NET Core.
Read moreHow to Build ZXing C++ to Wasm using WASI SDK in Linux
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 WASI SDK to build a .wasm barcode reader module by porting ZXing C++.
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