There's nothing we can do... I suggest you run the profiler to see where
the time is lost. Likely not in PDFBox.
Also make sure that your input is a file and not a stream. I remember we
once had a problem, see
https://issues.apache.org/jira/browse/PDFBOX-4121
You could also try using the twelvemonkeys library.
Tilman
Am 11.06.2018 um 15:09 schrieb Kirk, Kenneth:
I believe it was faster in the case of good images produced by modern software.
In the case of the images that I am processing, that were created 20 years ago,
where the IFD has bad tags that don't
reference the next IFD properly, I need to grab the pages that are accessible
and flag the
resulting PDF for review.
-----Original Message-----
From: Tilman Hausherr [mailto:[email protected]]
Sent: Saturday, June 09, 2018 1:37 AM
To: [email protected]
Subject: Re: Poor performance creating PDF page from buffered image.
So was it faster when you used CCITTFactory.createFromFile?
Tilman
Am 08.06.2018 um 20:46 schrieb Kirk, Kenneth:
I started out using CCITTFactory.createFromFile but some of the images were
corrupt but salvageable.
I loop through each page until I get an exception. If the first page is
readable the user has enough information
To continue with the process.
-----Original Message-----
From: Tilman Hausherr [mailto:[email protected]]
Sent: Friday, June 08, 2018 1:39 PM
To: [email protected]
Subject: Re: Poor performance creating PDF page from buffered image.
You're creating the image the hard way... try CCITTFactory.createFromFile
Tilman
Am 08.06.2018 um 20:34 schrieb Kirk, Kenneth:
When I run the following code:
IIOMetadata tiffMetadata = reader.getImageMetadata(p);
BufferedImage image = reader.read(p);
IIOMetadataNode root = (IIOMetadataNode)
tiffMetadata.getAsTree("javax_imageio_1.0");
IIOMetadataNode dimension = (IIOMetadataNode)
root.getElementsByTagName("Dimension").item(0);
float horizontalPixelSizeMM = getPixelSizeMM(dimension, "HorizontalPixelSize");
float verticalPixelSizeMM = getPixelSizeMM(dimension, "VerticalPixelSize");
float xRes = 25.4f / horizontalPixelSizeMM;
float yRes = 25.4f / verticalPixelSizeMM;
PDImageXObject ximage = CCITTFactory.createFromImage(pdf, image);
float wScale = (ximage.getWidth() / xRes) * 72f;
float hScale = (ximage.getHeight() / yRes) * 72f;
PDPage page = new PDPage(new PDRectangle((float)wScale, (float)hScale));
PDPageContentStream stream = new PDPageContentStream(pdf, page);
Dimension scaledDim = getScaledDimension( new Dimension(ximage.getWidth(),
ximage.getHeight()),
new Dimension((int)
page.getMediaBox().getWidth(),
(int)
page.getMediaBox().getHeight()));
stream.drawImage(ximage, 0, 0, wScale, hScale);
stream.close();
pdf.addPage( page );
the PDImageXObject take 30 to 45 seconds to generate an object from 8.5x11 tiff
image that I use ImageIO to produce
a bufferedimage. I cannot share the image due to regulations but there is
nothing fancy about them.
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