All Developer Tutorials — Page 17 of 17

Learn how to detect and decode EAN-13 barcodes in images using Python and OpenCV with thresholding, contour detection, and checksum verification.

Learn how to use the JavaScript Clipboard API with Dynamic Web TWAIN to copy scanned documents to the clipboard and paste images from the clipboard into a web scanning application.

Learn how to implement web-based document scanning over a shared network. Compare SANE, eSCL, WSD, and Dynamic Web TWAIN Remote Scan for browser-based LAN scanning.

Step-by-step tutorial to build a JavaScript scan-to-email web app using Dynamic Web TWAIN for browser document scanning, Python Flask for SMTP email delivery, and Dropbox for large file sharing.

Learn how to scan documents in the browser with Dynamic Web TWAIN and automatically upload them to OneDrive or Dropbox using OAuth and cloud storage APIs in JavaScript.

Learn how to access a USB document camera from an HTML5 web page and capture documents with edge detection using Dynamic Web TWAIN's JavaScript camera add-on.

Step-by-step Angular document scanning SDK tutorial: build a web document management system using Dynamic Web TWAIN with scanner acquisition and local file loading.

Learn why QR codes and barcodes fail to scan at a distance and how higher resolution helps: using the camera's highest video resolution, taking photos instead of live scanning, scale-up, and super resolution - with measured scanning distances from the Faraway_Scan experiment.

Learn why QR codes and barcodes fail to scan at a distance and how camera zoom (manual and auto) improves the read rate: digital zoom, refocusing, zoom factors, and the auto-zoom feature of Dynamsoft Camera Enhancer, with the Faraway_Scan demo app.

Create an Android barcode scanner with CameraX: preview and image-analysis use cases, decoding the NV21 frame buffer with Dynamsoft Barcode Reader (barcodereaderbundle 11.6.2000), and camera controls such as zoom, torch, and focus.

Dynamsoft offers a lightweight QR code reader for web browsers through Dynamsoft Barcode Reader v11. Learn how to scan QR codes in JavaScript and HTML5 with single-scan, continuous multi-barcode scanning, QR-code-only filtering, and camera UI customization - no app install required.

Step-by-step HTML5 mobile document scanning tutorial using Dynamic Web TWAIN SDK — capture, edit, and save documents from mobile cameras with JavaScript.

Learn how to build a cross-platform GUI Python barcode and QR code reader for Windows, Linux, macOS, and Raspberry Pi OS using Qt Designer, PySide6, and the Dynamsoft Capture Vision SDK.

Learn how to build a Python GUI barcode scanner on Raspberry Pi using Qt PySide6, OpenCV, and Dynamsoft Barcode Reader SDK — with multiprocessing to prevent UI freezing during live webcam scanning.

Step-by-step guide to building a Vue.js component-based document scanning app using Dynamic Web TWAIN. Covers SDK initialization, viewer binding, scan panel, webcam capture, and OCR integration.

Learn how to build a cross-platform OpenCV webcam app and stream the live feed to any web browser using Python, Node.js, C#, and Go — with a remote access setup via ngrok.

Learn how to scan nonstandard and damaged 1D barcodes with custom start/stop characters using Dynamsoft Barcode Reader in Python. Includes custom JSON templates for Code 39 variants with HeadModuleRatio and TailModuleRatio.

Learn how to use PowerShell to disable and enable a built-in or USB webcam on Windows 10 and Windows 11 using Get-PnpDevice, Disable-PnpDevice, and Enable-PnpDevice cmdlets — plus how to run .ps1 scripts as administrator from a batch file.

Learn how to use Twacker and Virtual Scanner to verify whether a TWAIN device driver is working correctly — before debugging your own application.