QR code


I write QR decoder.
If I get distortion QR image,
decoder cannot recognize it.
For example, if I make QR photo angularly.
How can I adjust QR image?


  • QR code (abbreviated from [link=http://www.yiigo.com/net-document-image-plugin/barcode-plugin/qr-code-support.shtml]Quick Response Code[/link]) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan; a barcode is an optically machine-readable label that is attached to an item and that records information related to that item: The information encoded by a QR code may be made up of four standardized types ("modes") of data (numeric, alphanumeric, byte / binary, Kanji) or, through supported extensions, virtually any type of data.

    Recently, the QR Code system has become popular outside the automotive industry due to its fast readability and greater storage capacity compared to standard UPC barcodes; applications include product tracking, item identification, time tracking, document management, general marketing, and much more.

    A QR code consists of black modules (square dots) arranged in a square grid on a white background, which can be read by an imaging device (such as a camera) and processed using Reed-Solomon error correction until the image can be appropriately interpreted; data is then extracted from patterns present in both horizontal and vertical components of the image.
    Originally designed for industrial uses, QR codes have become common in consumer advertising. Typically, a smartphone is used as a QR-code scanner, displaying the code and converting it to some useful form (such as a standard URL for a website, thereby obviating the need for a user to type it manually into a web browser).
    You can generate and read any different kinds of barcode with the help of many professional [link=http://www.yiigo.com/net-document-image-plugin/barcode-plugin/]barcode SDKs[/link].
    I'm studying about this recently.
    I hope we can have some communication later.

    Best regards,
  • i have several years' experience in generating barcode, i think some turioals and articles might be helpful. you can google QR code, and some articles can be available. i can give you some if you need .

    this is [link=http://www.rasteredge.com/how-to/csharp-imaging/barcode-generating-qrcode/]the turoial of generating QR code[/link] , you can ,make it as reference and the tool if free for 30 days.

    this is the [link=http://www.rasteredge.com/how-to/csharp-imaging/barcode-generating/]barcode generator in c#[/link] and other formats, i think it might also be helpful

    good luck.

  • Whether the QR Code image can be adjusted or not depends on the QR Code generator. I have been creating QR Code in my work for years. In the early times, I do not know how to choose QR Code generators and many of the QR Code generator I chose did not support to adjust the parameters of the QR Code. I make my business very incovenient. So my suggestion is to choose a good [link=http://www.onbarcode.com/vb_net/qr-code-generator.html][color=Black]QR Code generator[/color][/link] which supports to do this. Here is a passage about [link=http://www.onbarcode.com/tutorial/vb-net-barcode-imaging.html][color=Black]barcode image settings[/color][/link] which may be helpful for you.
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