OK, thanks for your advices.
Best regards,
Diego
Il 18/04/2011 19.30, Paulo Soares ha scritto:
> No amount of rounding will save you. PDF doesn't have pixels, those
> pixels only appear in the printer and are out of your control. The
> only way to be safe is to have a good printing resolution or to make
> the barcode bigger. Barcodes are rather resilient and even this 2-4
> pixels fuzzyness won't prevent them to be read.
>
> Paulo
>
> ------------------------------------------------------------------------
> *From:* Diego Ruotolo [mailto:druot...@noemalife.com]
> *Sent:* Monday, April 18, 2011 6:25 PM
> *To:* itext-questions@lists.sourceforge.net
> *Subject:* Re: [iText-questions] HELP NEEDED: barcode and
> anti-aliasing
>
> OK: do you think is better to make this rounding directly in the
> code (using a function such as Math.round() ) ? I think the result
> will be more predictable this way, won't it?
>
> Il 18/04/2011 19.05, Paulo Soares ha scritto:
>> Yes but note that as you can't have half printer pixels you'll
>> end up with 2, 3 or 4 pixels depending on where the bar is placed.
>>
>> Paulo
>>
>>
>> ------------------------------------------------------------------------
>> *From:* Diego Ruotolo [mailto:druot...@noemalife.com]
>> *Sent:* Monday, April 18, 2011 5:55 PM
>> *To:* itext-questions@lists.sourceforge.net
>> *Subject:* Re: [iText-questions] HELP NEEDED: barcode and
>> anti-aliasing
>>
>> Hi Paulo,
>>
>> thanks for your answer. Can you also suggest me some tricks
>> to improve barcode quality? E.g., a correct value for the X
>> property? Actually, if I want a narrow bar of 3 pixels and I
>> have a resolution of 200 dpi, I set the X property to
>> 3*72/200 , is that right?
>> Thanks,
>>
>> Diego
>>
>> Il 18/04/2011 18.02, Paulo Soares ha scritto:
>>> That's your printer driver being too helpful. From Acrobat print to
>>> image and it will look ok.
>>>
>>> Paulo
>>>
>>> -----Original Message-----
>>> From: Diego Ruotolo [mailto:druot...@noemalife.com]
>>> Sent: Monday, April 18, 2011 4:28 PM
>>> To: itext-questions@lists.sourceforge.net
>>> Subject: [iText-questions] HELP NEEDED: barcode and anti-aliasing
>>>
>>> Hi,
>>>
>>> this is my first post to this list. My name is Diego and I am using
>>> iText to generate labels with barcode. I've tried several way of
>>> barcode
>>> generation, e.g. as a tempalte with barcode, as an iText image and
>>> as an
>>> awt image, but the result is always the same: a kinda anti-aliasing
>>> effect appears on the edge of bars, like a gray 1-pixel line. Since
>>> the
>>> data are correct (e.g.: the awt image is only black and white), I
>>> would
>>> like to know if there is any way to remove this rendering problem,
>>> because it may cause the barcode not to be read by some instruments.
>>> Actually I am using Interleaved 2 of 5 barcode, but I need to remove
>>> this "anti-aliasing" effect on all barcode type.
>>> All susggestions are welcome.
>>>
>>> Thanks in advice,
>>>
>>> Diego
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Benefiting from Server Virtualization: Beyond Initial Workload
>>> Consolidation -- Increasing the use of server virtualization is a
>>> top
>>> priority.Virtualization can reduce costs, simplify management, and
>>> improve
>>> application availability and disaster protection. Learn more about
>>> boosting
>>> the value of server virtualization.
>>> http://p.sf.net/sfu/vmware-sfdev2dev
>>> _______________________________________________
>>> iText-questions mailing list
>>> iText-questions@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/itext-questions
>>>
>>> iText(R) is a registered trademark of 1T3XT BVBA.
>>> Many questions posted to this list can (and will) be answered with
>>> a reference to the iText book: http://www.itextpdf.com/book/
>>> Please check the keywords list before you ask for examples:
>>> http://itextpdf.com/themes/keywords.php
>>>
>>>
>>> Aviso Legal:
>>>
>>> Esta mensagem é destinada exclusivamente ao destinatário. Pode
>>> conter informação confidencial ou legalmente protegida. A incorrecta
>>> transmissão desta mensagem não significa a perca de confidencialidade. Se
>>> esta mensagem for recebida por engano, por favor envie-a de volta para o
>>> remetente e apague-a do seu sistema de imediato. É proibido a qualquer
>>> pessoa que não o destinatário de usar, revelar ou distribuir qualquer parte
>>> desta mensagem.
>>>
>>>
>>>
>>> Disclaimer:
>>>
>>> This message is destined exclusively to the intended receiver. It
>>> may contain confidential or legally protected information. The incorrect
>>> transmission of this message does not mean the loss of its confidentiality.
>>> If this message is received by mistake, please send it back to the sender
>>> and delete it from your system immediately. It is forbidden to any person
>>> who is not the intended receiver to use, distribute or copy any part of
>>> this message.
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Benefiting from Server Virtualization: Beyond Initial Workload
>>> Consolidation -- Increasing the use of server virtualization is a
>>> top
>>> priority.Virtualization can reduce costs, simplify management, and
>>> improve
>>> application availability and disaster protection. Learn more about
>>> boosting
>>> the value of server virtualization.
>>> http://p.sf.net/sfu/vmware-sfdev2dev
>>>
>>>
>>> _______________________________________________
>>> iText-questions mailing list
>>> iText-questions@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/itext-questions
>>>
>>> iText(R) is a registered trademark of 1T3XT BVBA.
>>> Many questions posted to this list can (and will) be answered with
>>> a reference to the iText book: http://www.itextpdf.com/book/
>>> Please check the keywords list before you ask for examples:
>>> http://itextpdf.com/themes/keywords.php
>>
>>
>> --
>>
>> Ing. Diego Ruotolo
>> Software developer
>>
>> NoemaLife S.p.A.
>> Via Gobetti, 52
>> 40129 Bologna - ITALY
>> T +39 051 70.98.249
>> F +39 051 41.93.900
>> www.noemalife.com
>>
>> ------------------------------------------------------------------------
>> Aviso Legal:
>> Esta mensagem é destinada exclusivamente ao destinatário. Pode
>> conter informação confidencial ou legalmente protegida. A
>> incorrecta transmissão desta mensagem não significa a perca de
>> confidencialidade. Se esta mensagem for recebida por engano, por
>> favor envie-a de volta para o remetente e apague-a do seu sistema
>> de imediato. É proibido a qualquer pessoa que não o destinatário
>> de usar, revelar ou distribuir qualquer parte desta mensagem.
>>
>> Disclaimer:
>> This message is destined exclusively to the intended receiver. It
>> may contain confidential or legally protected information. The
>> incorrect transmission of this message does not mean the loss of
>> its confidentiality. If this message is received by mistake,
>> please send it back to the sender and delete it from your system
>> immediately. It is forbidden to any person who is not the
>> intended receiver to use, distribute or copy any part of this
>> message.
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Benefiting from Server Virtualization: Beyond Initial Workload
>> Consolidation -- Increasing the use of server virtualization is a top
>> priority.Virtualization can reduce costs, simplify management, and
>> improve
>> application availability and disaster protection. Learn more about
>> boosting
>> the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
>>
>>
>> _______________________________________________
>> iText-questions mailing list
>> iText-questions@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/itext-questions
>>
>> iText(R) is a registered trademark of 1T3XT BVBA.
>> Many questions posted to this list can (and will) be answered with a
>> reference to the iText book: http://www.itextpdf.com/book/
>> Please check the keywords list before you ask for examples:
>> http://itextpdf.com/themes/keywords.php
>
>
> --
>
> Ing. Diego Ruotolo
> Software developer
>
> NoemaLife S.p.A.
> Via Gobetti, 52
> 40129 Bologna - ITALY
> T +39 051 70.98.249
> F +39 051 41.93.900
> www.noemalife.com
>
> ------------------------------------------------------------------------
> Aviso Legal:
> Esta mensagem é destinada exclusivamente ao destinatário. Pode conter
> informação confidencial ou legalmente protegida. A incorrecta
> transmissão desta mensagem não significa a perca de confidencialidade.
> Se esta mensagem for recebida por engano, por favor envie-a de volta
> para o remetente e apague-a do seu sistema de imediato. É proibido a
> qualquer pessoa que não o destinatário de usar, revelar ou distribuir
> qualquer parte desta mensagem.
>
> Disclaimer:
> This message is destined exclusively to the intended receiver. It may
> contain confidential or legally protected information. The incorrect
> transmission of this message does not mean the loss of its
> confidentiality. If this message is received by mistake, please send
> it back to the sender and delete it from your system immediately. It
> is forbidden to any person who is not the intended receiver to use,
> distribute or copy any part of this message.
>
>
> ------------------------------------------------------------------------------
> Benefiting from Server Virtualization: Beyond Initial Workload
> Consolidation -- Increasing the use of server virtualization is a top
> priority.Virtualization can reduce costs, simplify management, and improve
> application availability and disaster protection. Learn more about boosting
> the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
>
>
> _______________________________________________
> iText-questions mailing list
> iText-questions@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/itext-questions
>
> iText(R) is a registered trademark of 1T3XT BVBA.
> Many questions posted to this list can (and will) be answered with a
> reference to the iText book: http://www.itextpdf.com/book/
> Please check the keywords list before you ask for examples:
> http://itextpdf.com/themes/keywords.php
--
Ing. Diego Ruotolo
Software developer
NoemaLife S.p.A.
Via Gobetti, 52
40129 Bologna - ITALY
T +39 051 70.98.249
F +39 051 41.93.900
www.noemalife.com
------------------------------------------------------------------------------
Benefiting from Server Virtualization: Beyond Initial Workload
Consolidation -- Increasing the use of server virtualization is a top
priority.Virtualization can reduce costs, simplify management, and improve
application availability and disaster protection. Learn more about boosting
the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
_______________________________________________
iText-questions mailing list
iText-questions@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions
iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
