scan-from-distance

🔭 Scan From Distance

A demo that demonstrates techniques for scanning barcodes from a distance (ROI, zoom and resolution tuning) using the Dynamsoft Barcode Reader (JavaScript edition).

Included files

• index.html — demo page (camera + UI).
• ReadDistantBarcodes.json — example configuration used by the sample.

✨ Features

• Camera/ROI/decoder tuning for distant targets
• Example configuration for resolution and ROI adjustments

🔧 How it works

• The demo adjusts camera resolution and ROI to favor distant targets, and exposes decoder parameters to improve detection at smaller apparent sizes.
• The sample shows common trade-offs and provides an example JSON to reproduce settings.

Quick start

Opening HTML files directly may not work as expected. Instead, run a local development server. Here’s a quick method using Visual Studio Code:

1. Install the Five Server extension from the VS Code Marketplace.

2. Right-click on index.html and select "Open with Five Server".

💡 Tips

• Use a tripod or stable mount for distant scanning.
• Increase camera resolution and narrow ROI to target likely barcode areas.

📌 Notes

• Serve on localhost/HTTPS to enable camera access.
• For production, pair software tuning with suitable optics/camera hardware.