Check Barcode Recognition Quality
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Quality Check of Barcode Reading Results
Developers may need to check whether barcode reading outputs are accurate and complete. For this purpose, class BarCodeResult contains two properties: confidence and reading_quality.
Depending of the quality of barcode reading results, the confidence property returns a instance of the BarCodeConfidence enum that denotes the recognition confidence level. This enumeration contains values STRONG, NONE, and MODERATE that are discussed below. The reading_quality property returns an estimate of recognition quality corresponding to the confidence level, as explained in the table below.
| Confidence Level | Quality Value | Description |
|---|---|---|
| NONE | 0 | If the confidence level is None, it indicates that the barcode is invalid and its information has been read with errors. If required, it is possible to get its type and position in the image and decode barcode information partially |
| MODERATE | 80 | This confidence level may be returned for linear and postal barcode types with weak or absent checksum controls. Furthermore, it is necessary to analyze the result of the reading_quality property. The absolute correctness of barcode reading results is not assured |
| STRONG | 100 | This confidence level is returned for all 2D types with Reed-Solomon error correction. It means that barcode text has been recognized accurately |