carlos >
I believe your problem was solved by initializing the class correctly. Thanks for sending me an email.

raj >
I guess the thresholding is not working well.
But to narrow what is the problem, you should try passing an image captured by webcam to the decoder directly.
I’m sorry for being late to answer for an urgent question.

Jaime >
You can add your thresholding method at com.logosware.utils.QRcode.QRCodeDetector class’s detect() method.
Thresholding techniques themselves are almost same as ones for AR marker detection.
It must worth to research them too.

Özgün >
I am note sure what is the problem though, please make sure your webcam is working only in one application simultaneously.
Thank you for sending me an email and noticing me about comments here : )

I just found this amazing qr reader, and i was trying to do so changes but i think i am not that smart. I was trying to add adaptive thresholding.

Could you help me out and give me some pointers.

Thanks

I am working on a school project. I know it is not a right place to post my problem as it is related to .net application, but i need it urgently and i know atleast you can give me some direction to solve this problem.

The project is to develope a .net(c#) application to read QRCode. I am able to deoce it from a QRCode image. But when i use a Webcam image, same code does not work. Can you help me in this.

Thanks

public function qrReader(): void {

qrCodeLoader= new Loader();

qrCodeImage = new URLRequest(”licenses/qr.png”);
qrCodeLoader.load(qrCodeImage);

var qrSprite:Sprite = new Sprite();
qrSprite.addChild(qrCodeLoader)

getQRimage = new GetQRimage(qrSprite); // imageSrc:DisplayObject(Sprite, Video, …)  

getQRimage.addEventListener(QRreaderEvent.QR_IMAGE_READ_COMPLETE, onQrImageReadComplete);  

getQRimage.process();  

function onQrImageReadComplete(e:QRreaderEvent):void{  

qrDecode.setQR(e.data); 

qrDecode.addEventListener(QRdecoderEvent.QR_DECODE_COMPLETE, onQrDecodeComplete);  

qrDecode.startDecode();  

}

function onQrDecodeComplete(e:QRdecoderEvent):void{  

trace(e.data)
// e.data is the string decoded from QR Code  
}  

}

The original QR code does not support UTF8. It has only 4 modes of encoding – numbers, alphabets and numbers, a 8-bit byte and Kanji characters(shift-JIS encoding).

I have no idea if the QR code encoder customized to use UTF8 encoding instead of shift-JIS encoding even exists. But if you already have such encoder, it is not so difficult to make a customized version of decoder. The encoding of Kanji characters is written in lines.351-363 of QRdecode.as.

I test and work good,

I just notice the recognition take some time or maybe was the focus for my camera -distortion-

By the way, I noticed too that the return string when I encoded Latin characters like á ó or German umlaut like Ü ö ä ß are not property represent.
that ’s can be the encoding UTF8 … I will check more deep your sample and code.

again thanks for share it

Best,

guillermo