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How to Get Detailed Barcode Information
This page shows how to get detailed barcode information.
additional information, OneDCodeDetails, QRCodeDetails, PDF417Details, DataMatrixDetails, AztecDetails
false

How to Get Detailed Barcode Information

The Dynamsoft Barcode Reader SDK provides APIs for you to get the detailed barcode information like checksum digit, start/stop characters, error correction level, etc. To learn more about what information you can get, see the following items:

  • OneDCodeDetails: [C++]({{ site.cpp_api }}oned-code-details.html)
  • QRCodeDetails: [C++]({{ site.cpp_api }}qr-code-details.html)
  • PDF417Details: [C++]({{ site.cpp_api }}pdf417-details.html)
  • DataMatrixDetails: [C++]({{ site.cpp_api }}datamatrix-details.html)
  • AztecDetails: [C++]({{ site.cpp_api }}aztec-details.html)

Here we take QR Code as example and show how to get the version and model of a QR Code.

What is the Version of a QR Code?

QRCode Version Modules
Version 1 21 x 21
Version 2 25 x 25
... ...
Version N (17 + N x 4) x (17 + N x 4)
Version 40 177 x 177

What is the Model of a QR Code?

QRCode Model Description
Model 1 The original QR Code. It is a code capable of coding 1,167 numerals with its maximum version being 14 (73 x 73 modules).
Model 2 Created by improving Model 1 so that this code can be read smoothly even if it is distorted in some way. This code can encode up to 7,089 numerals with its maximum version being 40 (177 x 177 modules). Today, the term QRCode usually refers to QRCode Model 2.

Code Snippet for Getting Detailed Barcode Information

>- C++ >- Android >- Objective-C >- Swift > > ```c++ CCaptureVisionRouter* cvr = new CCaptureVisionRouter; CCapturedResult* result = cvr->Capture("IMAGE-FILE-PATH", CPresetTemplate::PT_READ_BARCODES); if (result->GetErrorCode() != 0) { cout << "Error: " << result->GetErrorCode() << "," << result->GetErrorString() << endl; } int capturedResultItemCount = result->GetCount(); for (int j = 0; j < capturedResultItemCount; j++) { const CCapturedResultItem* capturedResultItem = result->GetItem(j); CapturedResultItemType type = capturedResultItem->GetType(); if (type == CapturedResultItemType::CRIT_BARCODE) { const CBarcodeResultItem* barcodeResultItem = dynamic_cast (capturedResultItem); if (barcodeResultItem->GetFormat() == BarcodeFormat::BF_QR_CODE) { const CQRCodeDetails* detail = dynamic_cast(barcodeResultItem->GetDetails()); cout << "Version: " << detail->version; cout << "Model: " << detail->model; } } } // more process here ``` > ```java public void onDecodedBarcodesReceived(DecodedBarcodesResult result) { if (result != null){ BarcodeResultItem[] items = result.getItems(); for (int i=0; i < items.length; i++){ BarcodeResultItem item = items[i]; Log.i("DecodedBarcodes", "onDecodedBarcodesReceived: This is the number "+i+" barcode"); QRCodeDetails qrDetails = (QRCodeDetails) item.getDetails(); int version = qrDetails.getVersion(); Log.i("DecodedBarcodes", "The version of the QR barcode is: "+version); int model = qrDetails.getModel(); Log.i("DecodedBarcodes", "The model of the QR barcode is: "+model); } } } ``` > ```objc - (void)onDecodedBarcodesReceived:(DSDecodedBarcodesResult *)result { if (result.items.count > 0) { for (DSBarcodeResultItem *item in result.items) { DSQRCodeDetails *qrDetails = (DSQRCodeDetails *) item.details; NSInteger version = qrDetails.version; NSInteger model = qrDetails.model; } } } ``` > ```swift func onDecodedBarcodesReceived(_ result: DecodedBarcodesResult) { if let items = result.items, items.count > 0 { for item in items { let qrCodeDetails = item.details as! QRCodeDetails let version = qrCodeDetails.version let model = qrCodeDetails.model } } } ```