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  1. #1
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    Aug 2009
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    Camera for barcode reading

    Hi,

    I am doing some 2d barcodes for a clothing company for a marketing campaign. The barcode should be read with a mobile phone.

    Does anyone know how I determine what size the barcode should be for the phone to read it?

    I assume that the megapixel of the camera determine how small the barcode can be, but are there other things that matter? Like software, etc?

    As I understand the standard for the nokia code is datamatrixes, if I use a QR code will this matter on the readability?

  2. #2
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    Re: Camera for barcode reading

    There is nice projekt on google code dealing with barcode reading: <http://code.google.com/p/zxing/>

    As far as i'm concered the 2d-Bar Code reading is not included in the jsr257.

    cheers, geri-m

  3. #3
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    Re: Camera for barcode reading

    I'm planning to integrate the information read in the barcode with a database os files. I gave a look in "Zebra", and I saw that this did a search on the web looking for what the barcode means. There is some other that i can read the barcode and use the recognition to after relate with itens in a database? through the camera.

  4. #4
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    Re: Camera for barcode reading

    Quote Originally Posted by mhenrique View Post
    I'm planning to integrate the information read in the barcode with a database os files. I gave a look in "Zebra", and I saw that this did a search on the web looking for what the barcode means. There is some other that i can read the barcode and use the recognition to after relate with itens in a database? through the camera.
    you should be able to implement offline validation of these 2d barcodes as well.

  5. #5
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    Apr 2010
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    Lightbulb Re: Camera for barcode reading

    Quote Originally Posted by geri-m View Post
    As far as i'm concered the 2d-Bar Code reading is not included in the jsr257.
    Sure about that ? What about javax.microedition.contactless.visual ?
    Code:
    // Read visual tag
    VisualTagConnection conn = 
      (VisualTagConnection)Connector.open("vtag://");
    byte[] data = conn.readVisualTag(image, images[0], mySymbology);
    // Handle data from the image
    conn.close();
    This is part of the JSR-257 javadoc, & to me it means barcode reading.

  6. #6
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    Mar 2007
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    Re: Camera for barcode reading

    Quote Originally Posted by le sage View Post
    Sure about that ? What about javax.microedition.contactless.visual ?
    Code:
    // Read visual tag
    VisualTagConnection conn = 
      (VisualTagConnection)Connector.open("vtag://");
    byte[] data = conn.readVisualTag(image, images[0], mySymbology);
    // Handle data from the image
    conn.close();
    This is part of the JSR-257 javadoc, & to me it means barcode reading.
    It's included. But not implemented.

  7. #7
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    Question Re: Camera for barcode reading

    Quote Originally Posted by Alex_Polt View Post
    It's included. But not implemented.
    That's right. Have you heard about any phone that would implement that part ?

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