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Medical Certificate Scanner | Flutter Document Scanner

Introduction​

The Scanbot SDK provides the ability to find and extract content from German Medical Certificates (MC / AU-Bescheinigung forms).

The following fields can be extracted:

  • Checkboxes:
    • Initial Certificate (Erstbescheinigung)
    • Renewed Certificate (Folgebescheinigung)
    • Work Accident (Arbeitsunfall, Arbeitsunfallfolgen, Berufskrankheit)
    • Assigned To Accident Insurance Doctor (dem Durchgangsarzt zugewiesen)
  • Date Fields:
    • Incapable Since (arbeitsunfähig seit)
    • Incapable Until (voraussichtlich arbeitsunfähig bis ...)
    • Diagnosed On (festgestellt am)
  • Patient information:
    • Insured Person Age - Adult or Child
    • Insurance Provider
    • First Name
    • Last Name
    • Address
    • Diagnosis
    • Health Insurance Number
    • Insured Person Number
    • Status
    • Place Of Operation Number
    • Doctor Number

The Medical Certificate recognizer is available as a classic component (types of components are explained here).

Take a look at our Example Apps to see how to integrate the Generic Documents Scanner.

Medical Certificate Scanner Classic​

Integration of Medical Certificate Scanner Classic Components​

Use the classes MedicalCertificateScannerCamera, MedicalCertificateCameraLiveDetector and ScanbotCameraController to build a custom scanner UI for German Medical Certificate scanning.

Create MedicalCertificateCameraLiveDetector instance and attach it to MedicalCertificateScannerCamera​

MedicalCertificateScannerCamera provides the ability to subscribe to medical certificate scanning results with 2 callbacks:

  • mcListener - scanning results
  • errorListener - license errors
late MedicalCertificateCameraLiveDetector mcCameraDetector;

...

mcCameraDetector = MedicalCertificateCameraLiveDetector(
    mcListener: (scanningResult) {
        print(scanningResult.toString());
    },
    errorListener: (error) {
        // Error listener will inform if there is a problem with the license when opening the screen.
        print(error);
    },
);
Add MedicalCertificateScannerCamera to the widget tree​
 ScanbotCameraController? controller;

...

MedicalCertificateScannerCamera(
    cameraDetector: mcCameraDetector,
    configuration: MedicalCertificateCameraConfiguration(
     flashEnabled: flashEnabled,
     scannerConfiguration:
                MedicalCertificateClassicScannerConfiguration(
                     recognizePatientInfo: true,
                     recognizeBarcode: true,
                     captureHighResolutionImage: true),
      finder: FinderConfiguration(decoration: BoxDecoration(
             border: Border.all(
                      width: 5,
                      color: Colors.deepPurple,),
             borderRadius:
                      const BorderRadius.all(Radius.circular(20)))),
      onWidgetReady: (controller) {
                // After the camera has initialized, you are able to control the camera parameters.
                this.controller = controller;
            }
            ...
      ),
    ...
)
MedicalCertificateScannerCamera​
final MedicalCertificateCameraLiveDetector cameraDetector;

final MedicalCertificateCameraConfiguration configuration;

final Function(ScanbotCameraController controller) onWidgetReady;

/// Triggers when the camera plugin needs to do some heavy processing eg. saving the snap as an image.
final Function(bool)? onHeavyOperationProcessing;
MedicalCertificateCameraConfiguration​
/// Controls whether the flash should be initially enabled.
/// The default value is FALSE.
bool? flashEnabled;

/// Sets the current zoom by a linear zoom value ranging from 0f to 1.0f.
/// Optical Zoom Level 0f represents the minimum zoom
/// while Optical Zoom Level 1.0f represents the maximum zoom.
/// Default value is 0.
double? cameraZoomFactor;

FinderConfiguration? finder;

MedicalCertificateClassicScannerConfiguration scannerConfiguration;
FinderConfiguration​
/// The rectangle that perforates the background and that will be presented as the finder.
BoxDecoration decoration;

/// This widget will be drawn on top of the finder.
/// Here you can add some custom design elements, for example, a QR code watermark.
Widget? widget;

/// Something that should be shown between the top of the finder and the camera view.
Widget? topWidget;

/// Something that should be shown between the bottom of the finder and the camera view.
Widget? bottomWidget;

/// The overlay background color, surrounding the finder view rectangle.
Color? backgroundColor;

/// The finder view rectangle aspect ratio.
FinderAspectRatio? finderAspectRatio;

/// The finder view minimum padding from the bounds of the screen.
double finderMinimumPadding;

/// Triggers when the finder area is changed.
/// Can be helpful when aligning some content on top of the finder.
final OnFinderRectChange? onFinderRectChange;
MedicalCertificateClassicScannerConfiguration​
  /// Controls whether the patient info block should be recognized.
  bool recognizePatientInfo;

  /// Controls whether the data from the barcode (if present) should be read.
  /// This can result in more accurate data recognition.
  bool recognizeBarcode;

  /// Take a high-res snapshot of the medical certificate (after it has been detected) and run the recognition on this image.
  bool captureHighResolutionImage;
ScanbotCameraController​

ScanbotCameraController provides the ability to control camera functionality:

  • isFlashAvailable - to check if the flashlight is available on the device.
  • setFlashEnabled - to enable the flashlight.

Want to scan longer than one minute?

Generate your free "no-strings-attached" Trial License and properly test the Scanbot SDK.

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