Package de.iip_ecosphere.platform.kiServices.functions.images

Class QRCodeScanner

java.lang.Object

de.iip_ecosphere.platform.kiServices.functions.images.QRCodeScanner

public class QRCodeScanner
extends Object

Offers the functionality of reading in qr codes.

Author:

Alexander Weber, SSE

Field Summary

Fields

Modifier and Type	Field	Description
private static de.iip_ecosphere.platform.services.environment.ProcessSupport.ScriptOwner	qrScriptOwner	will probably not work on windows!(Set files location for windows, might be changed) Maybe different way to enable debug information instead of deleting/adding .withProcessCustomizer(ProcessSupport.INHERIT_IO);.
private static String	resultScript

Constructor Summary

Constructors

Constructor	Description
QRCodeScanner()

Method Summary

Modifier and Type	Method	Description
static String	pythonFallbackQRDetection(String b64Image)	Call for python fallback script.
static String	readQRCode(BufferedImage bufferedImage)	Detects a QR code on bufferdImages.
static String	readQRCode(String b64image)	Enables the QR code detection for base64 encoded images.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

resultScript

private static String resultScript

qrScriptOwner

private static de.iip_ecosphere.platform.services.environment.ProcessSupport.ScriptOwner qrScriptOwner

will probably not work on windows!(Set files location for windows, might be changed) Maybe different way to enable debug information instead of deleting/adding .withProcessCustomizer(ProcessSupport.INHERIT_IO);.

Constructor Details

QRCodeScanner

public QRCodeScanner()

Method Details

readQRCode

public static String readQRCode(String b64image)
                         throws IOException

Enables the QR code detection for base64 encoded images.

Parameters:

b64image - Image as base 64 encoded string.

Returns:

the result of the QR scan.

Throws:

IOException - When the conversion from String to image fails.

readQRCode

public static String readQRCode(BufferedImage bufferedImage)

Detects a QR code on bufferdImages. Source: https://simplesolution.dev/java-read-qr-code-from-image-file-base64-zxing/

Parameters:

bufferedImage - a BufferdImage to read a QR code from.

Returns:

The content of the QR code as a String. If nothing could be detected the String will be empty.

pythonFallbackQRDetection

public static String pythonFallbackQRDetection(String b64Image)

Call for python fallback script. Shall retry the detection!

Parameters:

b64Image - The image.

Returns:

The contents of the QR code as a String.