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double pass qr with wide and cropped image

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This commit is contained in:
Craig Raw 2021-11-08 10:30:56 +02:00
parent 90439501ad
commit 98c1f05ed6
1 changed files with 15 additions and 4 deletions
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19
src/main/java/com/sparrowwallet/sparrow/control/WebcamService.java
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@ -102,7 +102,7 @@ public class WebcamService extends ScheduledService<Image> {
updateValue(image);
if(System.currentTimeMillis() > (lastQrSampleTime + QR_SAMPLE_PERIOD_MILLIS)) {
readQR(croppedImage);
readQR(bimg, croppedImage);
lastQrSampleTime = System.currentTimeMillis();
}
@ -129,15 +129,26 @@ public class WebcamService extends ScheduledService<Image> {
return super.cancel();
}
private void readQR(BufferedImage bufferedImage) {
private void readQR(BufferedImage wideImage, BufferedImage croppedImage) {
Result result = readQR(wideImage);
if(result == null) {
result = readQR(croppedImage);
}
if(result != null) {
resultProperty.set(result);
}
}
private Result readQR(BufferedImage bufferedImage) {
LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
try {
Result result = qrReader.decode(bitmap, Map.of(DecodeHintType.TRY_HARDER, Boolean.TRUE));
resultProperty.set(result);
return qrReader.decode(bitmap, Map.of(DecodeHintType.TRY_HARDER, Boolean.TRUE));
} catch(ReaderException e) {
// fall thru, it means there is no QR code in image
return null;
}
}