Typical scanners would scan to PDF by creating a page with one image
spanning the whole page. Some scanners that have built-in OCR may put
transparent text over the scanned image for select-and-copy purposes.
Typically though the compression of the large image can stand to
improvement.
Easiest
Hello,
I am evaluating the possibility to allow users to choose multiple
PDFs that contain blocks of content to be coalesced into a single PDF.
I know that pages can be coalesced into a single PDF with all the
pages, but in this case PDFs would contain less then a page, and I
would like to
Maybe this is a bit off, but my experience with PDFBox and looking
for bar-codes led me to completely avoid rendering the PDF. Instead I
iterate the resources in the pages, and look for images which I
process one by one by calling PDImage.getImage(). This seems to avoid
a few problems. Also that
I believe to OP means that the arc is part of an Ellipse, hence
minor and major axis.
На пн, 11.03.2019 г. в 9:28 ч. Tilman Hausherr написа:
>
> Hi,
>
> I entered "sweep angle arc" into google images so now I see what you
> mean with "sweep angle".
>
> When you write "major axis" and "minor
Now that it is visible, that there is no SVG in the PDF, why not
simply render the PDF to PNG and crop the graph part?
Unless there is some weird requirement to use SVG rather than PNG…
If there is a hard requirement for SVG one could use the
PDFRenderer.renderPageToGraphics[1] in
ary and the command
> line tools are for convenience :-)
>
> Tilman
>
>
> Am 31.10.2017 um 11:18 schrieb Lachezar Dobrev:
>>
>>Ahh... You mean use the tool as a *ahm* tool?
>>I'm so used to seeing these as parts of the command-line tools that
>>
space is written to it, and use the
writeText(PDDocument,Writer) to quickly cancel processing when
non-white space is found.
2017-10-30 19:54 GMT+02:00 Tilman Hausherr <thaush...@t-online.de>:
> Am 30.10.2017 um 16:52 schrieb Lachezar Dobrev:
>>
>>I have been looking at it
tell me
that there is additional content on the page other than the single
image?
2017-10-30 15:53 GMT+02:00 Tilman Hausherr <thaush...@t-online.de>:
> Am 30.10.2017 um 14:04 schrieb Lachezar Dobrev:
>>
>>I have to process PDF files, that (supposedly) contain one big ima
I have to process PDF files, that (supposedly) contain one big image
per page, which is a result from a Document-Scanner. I'd like to avoid
performing PDF-To-Image in these cases, and use the underlying image
instead.
I am not well-versed in all things PDF and have no idea how to
detect if a
Hmm...
1. java.awt.Color.decode(colorStr);
2. You're using integer division "rgb.getRed()/255" will yield 0 or
1, which is then cast to float. Use "getRed()/255f" to get a float
result.
Your integer division code will only yield a red colour with
#FF8000, which I suspect gets
Apologies for being blunt, but seeing that you're mixing string
literals and UNICODE escape sequences, I have to ask: are you *sure*
you're using the same character set when editing the .java file and
when compiling it? I've had discrepancies when editing the java file
in one encoding (say
t;
> -- John
>
> > Tilman
> >
> >
> >> Am 28.06.2016 um 14:06 schrieb Lachezar Dobrev:
> >> I am not expecting anything to do with the library code changing.
> >> I was hoping there is some bulk-font-change technique that I can do
> with
> >&g
scaling-down that image using lanczos (just Google for a Java
> implementation). Then threshold that image to binary - an adaptive
> threshold might work well here.
>
> -- John
>
> > On 27 Jun 2016, at 09:10, Lachezar Dobrev <l.dob...@gmail.com> wrote:
> >
> >
rendering the pages.
2016-06-27 19:39 GMT+03:00 Tilman Hausherr <thaush...@t-online.de>:
> Am 27.06.2016 um 18:10 schrieb Lachezar Dobrev:
>
>>Hey all,
>>
>>I need to print PDFs to images to be forwarded to a low-resolution
>> printer (200 dpi).
>>
Hey all,
I need to print PDFs to images to be forwarded to a low-resolution
printer (200 dpi).
Printing works (Yay!), and the ability to specify colour space and
resolution helps immensely.
When reading the PDFs I get these error messages:
VI 27, 2016 5:53:39 PM
In-line
2015-09-01 19:31 GMT+03:00 Tilman Hausherr <thaush...@t-online.de>:
> Am 01.09.2015 um 11:26 schrieb Lachezar Dobrev:
>
>>Hello all.
>>I'm tasked with providing a service to generate PDFs from template PDFs
>> by replacing text place holders and
Hello all.
I'm tasked with providing a service to generate PDFs from template PDFs
by replacing text place holders and image place holders with data from a
database.
For replacing text we decided to use Form Fields to keep minimal effect
on the page layout, and to avoid problems with texts
You might want to check if you're not being plagued by transitive
dependencies woes.
Use mvn dependency:tree to check the dependencies in your project. You
may be surprised.
2015-07-02 17:09 GMT+03:00 Evan Williams evan.willi...@zapprx.com:
I tried updating to bouncycastle 1.52 (I was using
Yes, it is possible.
PDDocument pdf = PDDocument.load(input_stream);
List pages = pdf.getDocumentCatalog().getAllPages();
for (int pageNo = 0; pageNo pdf.getNumberOfPages(); pageNo ++)
{
PDPage page = (PDPage) pages.get(pageNo);
PDResources rsc = page.getResources();
if
In that case I suspect you need to check JULI [1].
It's not short, and at places it is cryptic, but is the definitive source.
A quick-and-dirty cork-in:
1. create a logging.properties file (name is arbitrary)
2. put in that file the following two lines
handlers=
.level=OFF
3.
I'd rather 'alias' the font in either:
- /etc/fonts/fonts.conf
- ~/.config/fontconfig/fonts.conf
2015-03-15 13:08 GMT+02:00 Tilman Hausherr thaush...@t-online.de:
Install the Times New Roman TT font on your system.
Tilman
Am 15.03.2015 um 03:16 schrieb Andrew Munn:
I am running
Well... Typically when using a hardware device one does not use the
key material directly, but rather uses a PKCS#11 library to interface
the device and call on it to perform any cryptographic operations it
needs to: signatures, verification, encryption, decryption, generation
etc.
For this
Main use: extract images from PDFs created by scanner/fax.
2014/1/6 Maruan Sahyoun sahy...@fileaffairs.de:
Dear PDFBox users,
we’d love to hear from you how you are using PDFBox in your PDF applications.
Do you use it for rendering, merging, creation … - what is the main
application?
This smells of Exception overwriting.
BaseParser.java:610 is actually a clean-up procedure, and if it
crashes it's quite possible that the original error is lost.
I have a gut feeling that there is an OOME somewhere above, that gets
wiped out by a crashed clean-up procedure.
That said: did you
Possibly the images get compressed as JPEG or similar.
I've had problems with other PDF generators too, occasionally when
adding a Bar Code to the PDF it gets severely distorted. As it turns
out the encoder compressed the image using JPEG, which results in
severe errors in the image.
Hello colleagues.
Since a month or two I've started using PDF Box to read PDF files
received from a scanner. Recently some of the users started receiving
this error:
java.lang.RuntimeException: EOL encountered in black run.
at
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