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. >> >> >> >> >> >> >> >> >> >> ************************************************ >> Disclaimer - This email and any files transmitted with it are confidential >> and contain privileged or copyright information. You must not present this >> message to another party without gaining permission from the sender. If you >> are not the intended recipient you must not copy, distribute or use this >> email or the information contained in it for any purpose other than to >> notify the Office of the Illinois Secretary of State. >> >> If you have received this message in error, please notify the sender >> immediately, and delete this email from your system. 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