Two possibilities. 1) you didn't embed the fonts, so that the reader had to use the OS provided ones, which differ on the two machines.
2) the printing options (such as scaling, etc.) were different on the two machines when printing. Leonard -----Original Message----- From: Jonathan Logue [mailto:[email protected]] Sent: Tuesday, February 23, 2010 11:11 PM To: [email protected] Subject: Re: [iText-questions] Varied Results Has anyone had a situation where the output when printing an iText generated PDF from one computer had a different result than another computer. Before I even get into the specifics of the implementation, I am just curious if this is even possible. Could instructions be interpreted differently by different Reader instances? In our situation, text appears 1/4 of an inch, or so, off. Thanks! Jonathan Logue -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Tuesday, February 23, 2010 3:41 PM To: [email protected] Subject: iText-questions Digest, Vol 45, Issue 101 Send iText-questions mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/itext-questions or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of iText-questions digest..." Today's Topics: 1. Re: Re tain DuplexMode property (vdunkin) 2. Re: Using Images extracted from a pdf (Fernando Gomes) 3. Re: Re tain DuplexMode property (vdunkin) 4. Re: Using Images extracted from a pdf (Leonard Rosenthol) ---------------------------------------------------------------------- Message: 1 Date: Tue, 23 Feb 2010 13:02:55 -0800 (PST) From: vdunkin <[email protected]> Subject: Re: [iText-questions] Re tain DuplexMode property To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=us-ascii I got it working. I had to set the pdfReader to appendable as well as the pdfStamper to appendable. -- View this message in context: http://old.nabble.com/Retain-DuplexMode-property-tp27706214p27710454.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------ Message: 2 Date: Tue, 23 Feb 2010 13:06:44 -0800 (PST) From: Fernando Gomes <[email protected]> Subject: Re: [iText-questions] Using Images extracted from a pdf To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=UTF-8 i not want to transforme my pages in image.. its so.. i will extract de text of my pdf.. its be easy.. and in same action.. i will extract all images from this pdf.. apply OCR in images.. for extract text of each image. so ... i need so much to get all images into the pdf.. i won to take the byte raw of image.. now need transform that in a valid JAVA.AWT.IMAGE OR BUFFEREDIMAGE Mike Marchywka-2 wrote: > > > > > > You can always use the command line tool in pdf toolkit or xpf, > I can't remember which but there is something like > pdf2image similar to pdf2text to extract text. > > > > > > > > ---------------------------------------- >> Date: Tue, 23 Feb 2010 12:43:28 -0800 >> From: [email protected] >> To: [email protected] >> Subject: Re: [iText-questions] Using Images extracted from a pdf >> >> >> I'm going crazy with it. as you can see, I never manipulated images as >> low >> level. and do not have much sense of how things work. I am searching for >> a >> days for end my solution. and I'm already getting stressed. >> i going on test methods .. i try to do.. and before try by another >> choice.. >> -.- >> >> can you give me some more assistance on how I can turn this array of >> bytes >> back into an image? >> >> could have just one class of api that made it not? : P >> >> Pdfimages buf = new pdfimages (myRawImageByteArray); >> buf.getAsBufferedImage (); >> >> : P >> >> if you say you can not help me all right, but I can indicate a content in >> which I can rely on to get this done? >> >> thanks. >> >> >> Leonard Rosenthol-3 wrote: >>> >>> The image is decompressed and then "injected" into the PDF. Same with >>> EVERY TYPE of image EXCEPT JPEG. >>> >>> -----Original Message----- >>> From: Fernando Gomes [mailto:[email protected]] >>> Sent: Tuesday, February 23, 2010 3:21 PM >>> To: [email protected] >>> Subject: Re: [iText-questions] Using Images extracted from a pdf >>> >>> >>> ty .. >>> >>> I have a question. >>> when I insert an image that is not jpeg >>> what exactly happens with this? >>> >>> say that it is in PNG it is decompressed to be "injected" into PDF? >>> >>> or she keeps your PNG format, but the bytes are encoded with the >>> FlateEncode >>> .. >>> >>> a matter of finding the filter and decode do I get it. >>> >>> and if the image is uncompressed before being inserted to PDF, how do I >>> know >>> which type of encode the image? >>> >>> >>> Leonard Rosenthol-3 wrote: >>>> >>>> Bits per pixel is the BitsPerComponent value in the image object >>>> >>>> Pixels per line (POR LINHA) is _NOT_ Width * bits. It's Width * >>>> NumComponents, where NumComponents is based on the colorspace in >>>> question >>>> (eg. RGB == 3, CMYK == 4). >>>> >>>> -----Original Message----- >>>> From: Fernando Gomes [mailto:[email protected]] >>>> Sent: Tuesday, February 23, 2010 2:00 PM >>>> To: [email protected] >>>> Subject: Re: [iText-questions] Using Images extracted from a pdf >>>> >>>> >>>> >>>> >>>>> public static BufferedImage createBufferedImageFromRawBytes(byte[] >>>>> bytes,int width, int height, int bits) throws BadElementException, >>>>> MalformedURLException, IOException { >>>>> com.lowagie.text.Image img = >>>>> com.lowagie.text.Image.getInstance(bytes); >>>>> >>>>> DataBuffer db = new DataBufferByte (img.getRawData(), >>>>> img.getRawData().length); >>>>> >>>>> WritableRaster raster = Raster.createPackedRaster(db, //DATA BUFFER >>>>> width, //LARGURA >>>>> height, //ALTURA >>>>> width*bits, //LARGURA * BITS POR PIXEL = PIXEL POR >>>>> LINHA >>>>> ->scanlineStride >>>>> // bits, //BITS POR PIXEL ->pixelStride >>>>> new int [] {bits}, >>>>> >>>>> null); >>>>> >>>>> ColorSpace cs = ColorSpace.getInstance (img.getColorspace()); >>>>> ColorModel cm = new ComponentColorModel(cs, false, false, >>>>> Transparency.OPAQUE, db.getDataType()); >>>>> BufferedImage bi = new BufferedImage (cm, raster, false, null); >>>>> return null; >>>>> } >>>>> >>>>> >>>> >>>> this code is up to where I could get, but there are variables that I >>>> know >>>> of >>>> to generate bufferedImage, please someone help me see if I'm on track. >>>> If I write something wrong. >>>> >>>> >>>> >>>> Fernando Gomes wrote: >>>>> >>>>> can anyone help-me one more time.. >>>>> i dont know what i do .. >>>>> >>>>> I need to get the image bytes, now decoded... >>>>> >>>>> String colorSpace = pdfStrem.get(PdfName.COLORSPACE).toString(); >>>>>> String filter = pdfStrem.get(PdfName.FILTER).toString(); >>>>>> int bits = >>>>>> Integer.valueOf(pdfStrem.get(PdfName.BITSPERCOMPONENT).toString()); >>>>>> int width = >>>>>> Integer.valueOf(pdfStrem.get(PdfName.WIDTH).toString()); >>>>>> int height = >>>>>> Integer.valueOf(pdfStrem.get(PdfName.HEIGHT).toString()); >>>>>> PdfDictionary param = >>>>>> (PdfDictionary)pdfStrem.get(PdfName.DECODEPARMS); >>>>>> int colors = >>>>>> Integer.valueOf(param.get(PdfName.COLORS).toString()); >>>>>> int predictor = >>>>>> Integer.valueOf(param.get(PdfName.PREDICTOR).toString()); >>>>>> int colums = >>>>>> Integer.valueOf(param.get(PdfName.COLUMNS).toString()); >>>>>> if(filter.equals("/FlateDecode")) >>>>>> { >>>>>> byte[] bytesDecod = PdfReader.FlateDecode(bytes); >>>>> >>>>> these are all the information that I can withdraw PDF >>>>> >>>>> I have to do to create my image in general .. >>>>> I'm trying to do, or learn, but this hard, all my attempts have >>>>> failed. >>>>> ty >>>>> >>>>> >>>>> Fernando Gomes wrote: >>>>>> >>>>>> Sirs, really sorry for duplicating, can delete other topics ? >>>>>> so sorry ..:blush: >>>>>> >>>>>> very thkx for help.. >>>>>> and so good fast help .. >>>>>> i will estudy more .. >>>>>> >>>>>> >>>>>> Leonard Rosenthol-3 wrote: >>>>>>> >>>>>>> You are assuming that PDF maintains the PNG nature of the image - >>>>>>> that >>>>>>> is NOT the case. PDF only supports two kinds of images JPEG (which >>>>>>> is >>>>>>> why this works) and "raw bitmaps" (aka an array of bits). So in your >>>>>>> case, with the PNG, it is transcoded into the latter case and so if >>>>>>> you >>>>>>> want it back you will need to reverse the process on your end. >>>>>>> >>>>>> >>>>>> >>>>>> for this response in other same email :blush: >>>>>> quote of "1T3XT info" below .. >>>>>> >>>>>> really thanks. I must have seen the realance the chapter that you >>>>>> mentioned, I will read again and very carefully. My English is very >>>>>> weak, >>>>>> and it is very difficult to read. >>>>>> >>>>>> you are very funny, I laughed a lot. I know I deserved the scolding. >>>>>> Really thanks for your help. I will test and then come back to post >>>>>> the >>>>>> result. >>>>>> Thank you! >>>>>> >>>>>> >>>>>> 1T3XT info wrote: >>>>>>> >>>>>>> Fernando Henrique Gomes wrote: >>>>>>>> the problem is when I insert an image in PNG format and then try to >>>>>>>> get >>>>>>>> the same... >>>>>>> >>>>>>> OK, we're talking about a PNG. >>>>>>> If you've read chapter 10 of the 2nd edition of "iText in Action", >>>>>>> you know that PNGs are transformed into zipped pixels. >>>>>>> If you didn't know, you should read the book! >>>>>>> >>>>>>>> on here i try to take that image... >>>>>>>> >>>>>>>> [code] >>>>>>>> int XrefIndex =((PRIndirectReference)obj).getNumber(); >>>>>>>> PdfObject pdfObj = pdf.getPdfObject(XrefIndex); >>>>>>>> PdfStream pdfStrem = (PdfStream)pdfObj; >>>>>>>> byte[] bytes = >>>>>>>> PdfReader.getStreamBytesRaw((PRStream)pdfStrem); >>>>>>>> if ((bytes != null)) { >>>>>>>> String fileName = "Image_P"+pageNumber+"_"; >>>>>>>> File file = new File(fileName); >>>>>>>> FileOutputStream fw = new FileOutputStream(file); >>>>>>>> fw.write(bytes); >>>>>>>> fw.flush(); >>>>>>>> fw.close(); >>>>>>>> BufferedImage img2 = ImageIO.read(file); >>>>>>>> com.lowagie.text.Image img = >>>>>>>> com.lowagie.text.Image.getInstance(file.toURL()); >>>>>>>> } >>>>>>>> [/code] >>>>>>>> >>>>>>>> img2 returned a null !!!! >>>>>>> >>>>>>> Of course, why do you think that would work??? >>>>>>> >>>>>>>> in line of img .. has a Excpetion >>>>>>>> "Image_P1_ is not a recognized imageformat" >>>>>>> >>>>>>> Of course, you're sending iText a bunch of pixels, >>>>>>> but: what are the dimensions of the image, >>>>>>> how many bits are there per component? >>>>>>> >>>>>>>> when i try to do : >>>>>>>> [code] >>>>>>>> Image image = Toolkit.getDefaultToolkit().createImage(bytes); >>>>>>>> [code] >>>>>>>> >>>>>>>> and before create an image from this image getting the width and >>>>>>>> height >>>>>>>> from my PdfStream (create a buffered and draw the image) >>>>>>>> when i serialize on a file and visualize this.. this image in a >>>>>>>> fucking >>>>>>>> black picture .. all black -.- >>>>>>> >>>>>>> It's because you don't have a fucking clue about what you're doing >>>>>>> :P >>>>>>> Hehe, I was waiting for an occasion to use the F* word on the list. >>>>>>> Thanks! >>>>>>> >>>>>>>> if i use JPEG encode for my images.. all the 3 solution i have .. >>>>>>>> its >>>>>>>> ok.. have effects.. >>>>>>> >>>>>>> Well, that's because iText stores JPEGs literally as a JPEG without >>>>>>> changing any of the bytes. If you look inside, you'll see that the >>>>>>> filter is DCTDecode (Discrete Cosine Transform). >>>>>>> >>>>>>>> i can vizualize my images how to i create then .. perfect.. >>>>>>>> but if i change de JPEG ... for any other encode.. thats not have >>>>>>>> efect >>>>>>>> .. >>>>>>> >>>>>>> No idea what you're saying here, but you also need to study images. >>>>>>> >>>>>>>> can any help-me plz ? >>>>>>> >>>>>>> This example doesn't involve iText, but explains what you're >>>>>>> missing. >>>>>>> >>>>>>> Let's create an image byte per byte: >>>>>>> >>>>>>> byte b[] = new byte[256 * 3]; >>>>>>> for (int i = 0; i < 256; i++) { >>>>>>> b[i * 3] = (byte) (255 - i); >>>>>>> b[i * 3 + 1] = (byte) (255 - i); >>>>>>> b[i * 3 + 2] = (byte) i; >>>>>>> } >>>>>>> >>>>>>> This is how a PNG, GIF, and some other image types are stored >>>>>>> in a PDF, but in zipped format (FlateDecode). These bytes don't >>>>>>> make any sense if you don't know the bpc, color space and >>>>>>> dimensions. >>>>>>> >>>>>>> If you want to create an image from this bytes, you could do this: >>>>>>> >>>>>>> DataBuffer db = new DataBufferByte(b, b.length); >>>>>>> WritableRaster raster = Raster.createInterleavedRaster( >>>>>>> db, 16, 16, 48, 3, new int[]{0,1,2}, null); >>>>>>> ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB); >>>>>>> ColorModel cm = new ComponentColorModel( >>>>>>> cs, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); >>>>>>> BufferedImage bi = new BufferedImage(cm, raster, false, null); >>>>>>> ImageIO.write(bi, "bmp", new File("hello.bmp")); >>>>>>> >>>>>>> In this example, I treat the image as 16 x 16 pixels, using RGB, >>>>>>> and converting it to a Bitmap. It's up to you to adapt the example >>>>>>> if your image is a GrayScale or CMYK image, or if you want another >>>>>>> format. >>>>>>> >>>>>>> (And please don't post the same question multiple times!!!) >>>>>>> -- >>>>>>> This answer is provided by 1T3XT BVBA >>>>>>> http://www.1t3xt.com/ - http://www.1t3xt.info >>>>>>> >>>>>>> ------------------------------------------------------------------------------ >>>>>>> Download Intel? Parallel Studio Eval >>>>>>> Try the new software tools for yourself. Speed compiling, find bugs >>>>>>> proactively, and fine-tune applications for parallel performance. >>>>>>> See why Intel Parallel Studio got high marks during beta. >>>>>>> http://p.sf.net/sfu/intel-sw-dev >>>>>>> _______________________________________________ >>>>>>> iText-questions mailing list >>>>>>> [email protected] >>>>>>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>>>>>> >>>>>>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>>>>>> Check the site with examples before you ask questions: >>>>>>> http://www.1t3xt.info/examples/ >>>>>>> You can also search the keywords list: >>>>>>> http://1t3xt.info/tutorials/keywords/ >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> -- >>>> View this message in context: >>>> http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27708516.html >>>> Sent from the iText - General mailing list archive at Nabble.com. >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Download Intel? Parallel Studio Eval >>>> Try the new software tools for yourself. Speed compiling, find bugs >>>> proactively, and fine-tune applications for parallel performance. >>>> See why Intel Parallel Studio got high marks during beta. >>>> http://p.sf.net/sfu/intel-sw-dev >>>> _______________________________________________ >>>> iText-questions mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>>> >>>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>>> Check the site with examples before you ask questions: >>>> http://www.1t3xt.info/examples/ >>>> You can also search the keywords list: >>>> http://1t3xt.info/tutorials/keywords/ >>>> >>>> ------------------------------------------------------------------------------ >>>> Download Intel? Parallel Studio Eval >>>> Try the new software tools for yourself. Speed compiling, find bugs >>>> proactively, and fine-tune applications for parallel performance. >>>> See why Intel Parallel Studio got high marks during beta. >>>> http://p.sf.net/sfu/intel-sw-dev >>>> _______________________________________________ >>>> iText-questions mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>>> >>>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>>> Check the site with examples before you ask questions: >>>> http://www.1t3xt.info/examples/ >>>> You can also search the keywords list: >>>> http://1t3xt.info/tutorials/keywords/ >>>> >>>> >>> >>> -- >>> View this message in context: >>> http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27709815.html >>> Sent from the iText - General mailing list archive at Nabble.com. >>> >>> >>> ------------------------------------------------------------------------------ >>> Download Intel? Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> _______________________________________________ >>> iText-questions mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>> >>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>> Check the site with examples before you ask questions: >>> http://www.1t3xt.info/examples/ >>> You can also search the keywords list: >>> http://1t3xt.info/tutorials/keywords/ >>> >>> ------------------------------------------------------------------------------ >>> Download Intel? Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> _______________________________________________ >>> iText-questions mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>> >>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>> Check the site with examples before you ask questions: >>> http://www.1t3xt.info/examples/ >>> You can also search the keywords list: >>> http://1t3xt.info/tutorials/keywords/ >>> >>> >> >> -- >> View this message in context: >> http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27710159.html >> Sent from the iText - General mailing list archive at Nabble.com. >> >> >> ------------------------------------------------------------------------------ >> Download Intel? Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> _______________________________________________ >> iText-questions mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/itext-questions >> >> Buy the iText book: http://www.1t3xt.com/docs/book.php >> Check the site with examples before you ask questions: >> http://www.1t3xt.info/examples/ >> You can also search the keywords list: >> http://1t3xt.info/tutorials/keywords/ > > _________________________________________________________________ > Hotmail: Powerful Free email with security by Microsoft. > http://clk.atdmt.com/GBL/go/201469230/direct/01/ > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > > Buy the iText book: http://www.1t3xt.com/docs/book.php > Check the site with examples before you ask questions: > http://www.1t3xt.info/examples/ > You can also search the keywords list: > http://1t3xt.info/tutorials/keywords/ > > -- View this message in context: http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27710517.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------ Message: 3 Date: Tue, 23 Feb 2010 13:21:56 -0800 (PST) From: vdunkin <[email protected]> Subject: Re: [iText-questions] Re tain DuplexMode property To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=us-ascii I've narrowed down the issue a little more. When I remove the following lines of code, the duplexMode is retained. pdfStamper.addViewerPreference(PdfName.HIDETOOLBAR, pdfBoolean); pdfStamper.addViewerPreference(PdfName.FITWINDOW, pdfBoolean); It seems adding additional viewer preferences overwrites the original preferences. I am not attaching the before and after pdf's. The after pdf has confidential information. If you really want to look at both, let me know and I will strip the confidential info out. -- View this message in context: http://old.nabble.com/Retain-DuplexMode-property-tp27706214p27710732.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------ Message: 4 Date: Tue, 23 Feb 2010 15:41:16 -0800 From: Leonard Rosenthol <[email protected]> Subject: Re: [iText-questions] Using Images extracted from a pdf To: Post all your questions about iText here <[email protected]> Message-ID: <d23d6b9e57d654429a9ab6918caceaa97ca6084...@nambx02.corp.adobe.com> Content-Type: text/plain; charset="utf-8" Text extraction is difficult too - it just so happens that someone has written the code already and contributed it back, so that you can take advantage of it. Before then, it was quite a nightmare. Now you have a requirement (for your job, I assume) and the code doesn't exist so you need to write it. If you are unable to do so, due to lack of knowledge, time, etc. then perhaps your company should consider hiring iText Software to write it for you. I am sure they would be glad to it - and in less time than you've already spent. The alternative - and there isn't any shortcut - is for you to learn about PDF and image formats... Leonard -----Original Message----- From: Fernando Gomes [mailto:[email protected]] Sent: Tuesday, February 23, 2010 4:07 PM To: [email protected] Subject: Re: [iText-questions] Using Images extracted from a pdf i not want to transforme my pages in image.. its so.. i will extract de text of my pdf.. its be easy.. and in same action.. i will extract all images from this pdf.. apply OCR in images.. for extract text of each image. so ... i need so much to get all images into the pdf.. i won to take the byte raw of image.. now need transform that in a valid JAVA.AWT.IMAGE OR BUFFEREDIMAGE Mike Marchywka-2 wrote: > > > > > > You can always use the command line tool in pdf toolkit or xpf, > I can't remember which but there is something like > pdf2image similar to pdf2text to extract text. > > > > > > > > ---------------------------------------- >> Date: Tue, 23 Feb 2010 12:43:28 -0800 >> From: [email protected] >> To: [email protected] >> Subject: Re: [iText-questions] Using Images extracted from a pdf >> >> >> I'm going crazy with it. as you can see, I never manipulated images as >> low >> level. and do not have much sense of how things work. I am searching for >> a >> days for end my solution. and I'm already getting stressed. >> i going on test methods .. i try to do.. and before try by another >> choice.. >> -.- >> >> can you give me some more assistance on how I can turn this array of >> bytes >> back into an image? >> >> could have just one class of api that made it not? : P >> >> Pdfimages buf = new pdfimages (myRawImageByteArray); >> buf.getAsBufferedImage (); >> >> : P >> >> if you say you can not help me all right, but I can indicate a content in >> which I can rely on to get this done? >> >> thanks. >> >> >> Leonard Rosenthol-3 wrote: >>> >>> The image is decompressed and then "injected" into the PDF. Same with >>> EVERY TYPE of image EXCEPT JPEG. >>> >>> -----Original Message----- >>> From: Fernando Gomes [mailto:[email protected]] >>> Sent: Tuesday, February 23, 2010 3:21 PM >>> To: [email protected] >>> Subject: Re: [iText-questions] Using Images extracted from a pdf >>> >>> >>> ty .. >>> >>> I have a question. >>> when I insert an image that is not jpeg >>> what exactly happens with this? >>> >>> say that it is in PNG it is decompressed to be "injected" into PDF? >>> >>> or she keeps your PNG format, but the bytes are encoded with the >>> FlateEncode >>> .. >>> >>> a matter of finding the filter and decode do I get it. >>> >>> and if the image is uncompressed before being inserted to PDF, how do I >>> know >>> which type of encode the image? >>> >>> >>> Leonard Rosenthol-3 wrote: >>>> >>>> Bits per pixel is the BitsPerComponent value in the image object >>>> >>>> Pixels per line (POR LINHA) is _NOT_ Width * bits. It's Width * >>>> NumComponents, where NumComponents is based on the colorspace in >>>> question >>>> (eg. RGB == 3, CMYK == 4). >>>> >>>> -----Original Message----- >>>> From: Fernando Gomes [mailto:[email protected]] >>>> Sent: Tuesday, February 23, 2010 2:00 PM >>>> To: [email protected] >>>> Subject: Re: [iText-questions] Using Images extracted from a pdf >>>> >>>> >>>> >>>> >>>>> public static BufferedImage createBufferedImageFromRawBytes(byte[] >>>>> bytes,int width, int height, int bits) throws BadElementException, >>>>> MalformedURLException, IOException { >>>>> com.lowagie.text.Image img = >>>>> com.lowagie.text.Image.getInstance(bytes); >>>>> >>>>> DataBuffer db = new DataBufferByte (img.getRawData(), >>>>> img.getRawData().length); >>>>> >>>>> WritableRaster raster = Raster.createPackedRaster(db, //DATA BUFFER >>>>> width, //LARGURA >>>>> height, //ALTURA >>>>> width*bits, //LARGURA * BITS POR PIXEL = PIXEL POR >>>>> LINHA >>>>> ->scanlineStride >>>>> // bits, //BITS POR PIXEL ->pixelStride >>>>> new int [] {bits}, >>>>> >>>>> null); >>>>> >>>>> ColorSpace cs = ColorSpace.getInstance (img.getColorspace()); >>>>> ColorModel cm = new ComponentColorModel(cs, false, false, >>>>> Transparency.OPAQUE, db.getDataType()); >>>>> BufferedImage bi = new BufferedImage (cm, raster, false, null); >>>>> return null; >>>>> } >>>>> >>>>> >>>> >>>> this code is up to where I could get, but there are variables that I >>>> know >>>> of >>>> to generate bufferedImage, please someone help me see if I'm on track. >>>> If I write something wrong. >>>> >>>> >>>> >>>> Fernando Gomes wrote: >>>>> >>>>> can anyone help-me one more time.. >>>>> i dont know what i do .. >>>>> >>>>> I need to get the image bytes, now decoded... >>>>> >>>>> String colorSpace = pdfStrem.get(PdfName.COLORSPACE).toString(); >>>>>> String filter = pdfStrem.get(PdfName.FILTER).toString(); >>>>>> int bits = >>>>>> Integer.valueOf(pdfStrem.get(PdfName.BITSPERCOMPONENT).toString()); >>>>>> int width = >>>>>> Integer.valueOf(pdfStrem.get(PdfName.WIDTH).toString()); >>>>>> int height = >>>>>> Integer.valueOf(pdfStrem.get(PdfName.HEIGHT).toString()); >>>>>> PdfDictionary param = >>>>>> (PdfDictionary)pdfStrem.get(PdfName.DECODEPARMS); >>>>>> int colors = >>>>>> Integer.valueOf(param.get(PdfName.COLORS).toString()); >>>>>> int predictor = >>>>>> Integer.valueOf(param.get(PdfName.PREDICTOR).toString()); >>>>>> int colums = >>>>>> Integer.valueOf(param.get(PdfName.COLUMNS).toString()); >>>>>> if(filter.equals("/FlateDecode")) >>>>>> { >>>>>> byte[] bytesDecod = PdfReader.FlateDecode(bytes); >>>>> >>>>> these are all the information that I can withdraw PDF >>>>> >>>>> I have to do to create my image in general .. >>>>> I'm trying to do, or learn, but this hard, all my attempts have >>>>> failed. >>>>> ty >>>>> >>>>> >>>>> Fernando Gomes wrote: >>>>>> >>>>>> Sirs, really sorry for duplicating, can delete other topics ? >>>>>> so sorry ..:blush: >>>>>> >>>>>> very thkx for help.. >>>>>> and so good fast help .. >>>>>> i will estudy more .. >>>>>> >>>>>> >>>>>> Leonard Rosenthol-3 wrote: >>>>>>> >>>>>>> You are assuming that PDF maintains the PNG nature of the image - >>>>>>> that >>>>>>> is NOT the case. PDF only supports two kinds of images JPEG (which >>>>>>> is >>>>>>> why this works) and "raw bitmaps" (aka an array of bits). So in your >>>>>>> case, with the PNG, it is transcoded into the latter case and so if >>>>>>> you >>>>>>> want it back you will need to reverse the process on your end. >>>>>>> >>>>>> >>>>>> >>>>>> for this response in other same email :blush: >>>>>> quote of "1T3XT info" below .. >>>>>> >>>>>> really thanks. I must have seen the realance the chapter that you >>>>>> mentioned, I will read again and very carefully. My English is very >>>>>> weak, >>>>>> and it is very difficult to read. >>>>>> >>>>>> you are very funny, I laughed a lot. I know I deserved the scolding. >>>>>> Really thanks for your help. I will test and then come back to post >>>>>> the >>>>>> result. >>>>>> Thank you! >>>>>> >>>>>> >>>>>> 1T3XT info wrote: >>>>>>> >>>>>>> Fernando Henrique Gomes wrote: >>>>>>>> the problem is when I insert an image in PNG format and then try to >>>>>>>> get >>>>>>>> the same... >>>>>>> >>>>>>> OK, we're talking about a PNG. >>>>>>> If you've read chapter 10 of the 2nd edition of "iText in Action", >>>>>>> you know that PNGs are transformed into zipped pixels. >>>>>>> If you didn't know, you should read the book! >>>>>>> >>>>>>>> on here i try to take that image... >>>>>>>> >>>>>>>> [code] >>>>>>>> int XrefIndex =((PRIndirectReference)obj).getNumber(); >>>>>>>> PdfObject pdfObj = pdf.getPdfObject(XrefIndex); >>>>>>>> PdfStream pdfStrem = (PdfStream)pdfObj; >>>>>>>> byte[] bytes = >>>>>>>> PdfReader.getStreamBytesRaw((PRStream)pdfStrem); >>>>>>>> if ((bytes != null)) { >>>>>>>> String fileName = "Image_P"+pageNumber+"_"; >>>>>>>> File file = new File(fileName); >>>>>>>> FileOutputStream fw = new FileOutputStream(file); >>>>>>>> fw.write(bytes); >>>>>>>> fw.flush(); >>>>>>>> fw.close(); >>>>>>>> BufferedImage img2 = ImageIO.read(file); >>>>>>>> com.lowagie.text.Image img = >>>>>>>> com.lowagie.text.Image.getInstance(file.toURL()); >>>>>>>> } >>>>>>>> [/code] >>>>>>>> >>>>>>>> img2 returned a null !!!! >>>>>>> >>>>>>> Of course, why do you think that would work??? >>>>>>> >>>>>>>> in line of img .. has a Excpetion >>>>>>>> "Image_P1_ is not a recognized imageformat" >>>>>>> >>>>>>> Of course, you're sending iText a bunch of pixels, >>>>>>> but: what are the dimensions of the image, >>>>>>> how many bits are there per component? >>>>>>> >>>>>>>> when i try to do : >>>>>>>> [code] >>>>>>>> Image image = Toolkit.getDefaultToolkit().createImage(bytes); >>>>>>>> [code] >>>>>>>> >>>>>>>> and before create an image from this image getting the width and >>>>>>>> height >>>>>>>> from my PdfStream (create a buffered and draw the image) >>>>>>>> when i serialize on a file and visualize this.. this image in a >>>>>>>> fucking >>>>>>>> black picture .. all black -.- >>>>>>> >>>>>>> It's because you don't have a fucking clue about what you're doing >>>>>>> :P >>>>>>> Hehe, I was waiting for an occasion to use the F* word on the list. >>>>>>> Thanks! >>>>>>> >>>>>>>> if i use JPEG encode for my images.. all the 3 solution i have .. >>>>>>>> its >>>>>>>> ok.. have effects.. >>>>>>> >>>>>>> Well, that's because iText stores JPEGs literally as a JPEG without >>>>>>> changing any of the bytes. If you look inside, you'll see that the >>>>>>> filter is DCTDecode (Discrete Cosine Transform). >>>>>>> >>>>>>>> i can vizualize my images how to i create then .. perfect.. >>>>>>>> but if i change de JPEG ... for any other encode.. thats not have >>>>>>>> efect >>>>>>>> .. >>>>>>> >>>>>>> No idea what you're saying here, but you also need to study images. >>>>>>> >>>>>>>> can any help-me plz ? >>>>>>> >>>>>>> This example doesn't involve iText, but explains what you're >>>>>>> missing. >>>>>>> >>>>>>> Let's create an image byte per byte: >>>>>>> >>>>>>> byte b[] = new byte[256 * 3]; >>>>>>> for (int i = 0; i < 256; i++) { >>>>>>> b[i * 3] = (byte) (255 - i); >>>>>>> b[i * 3 + 1] = (byte) (255 - i); >>>>>>> b[i * 3 + 2] = (byte) i; >>>>>>> } >>>>>>> >>>>>>> This is how a PNG, GIF, and some other image types are stored >>>>>>> in a PDF, but in zipped format (FlateDecode). These bytes don't >>>>>>> make any sense if you don't know the bpc, color space and >>>>>>> dimensions. >>>>>>> >>>>>>> If you want to create an image from this bytes, you could do this: >>>>>>> >>>>>>> DataBuffer db = new DataBufferByte(b, b.length); >>>>>>> WritableRaster raster = Raster.createInterleavedRaster( >>>>>>> db, 16, 16, 48, 3, new int[]{0,1,2}, null); >>>>>>> ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB); >>>>>>> ColorModel cm = new ComponentColorModel( >>>>>>> cs, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE); >>>>>>> BufferedImage bi = new BufferedImage(cm, raster, false, null); >>>>>>> ImageIO.write(bi, "bmp", new File("hello.bmp")); >>>>>>> >>>>>>> In this example, I treat the image as 16 x 16 pixels, using RGB, >>>>>>> and converting it to a Bitmap. It's up to you to adapt the example >>>>>>> if your image is a GrayScale or CMYK image, or if you want another >>>>>>> format. >>>>>>> >>>>>>> (And please don't post the same question multiple times!!!) >>>>>>> -- >>>>>>> This answer is provided by 1T3XT BVBA >>>>>>> http://www.1t3xt.com/ - http://www.1t3xt.info >>>>>>> >>>>>>> ------------------------------------------------------------------------------ >>>>>>> Download Intel? Parallel Studio Eval >>>>>>> Try the new software tools for yourself. Speed compiling, find bugs >>>>>>> proactively, and fine-tune applications for parallel performance. >>>>>>> See why Intel Parallel Studio got high marks during beta. >>>>>>> http://p.sf.net/sfu/intel-sw-dev >>>>>>> _______________________________________________ >>>>>>> iText-questions mailing list >>>>>>> [email protected] >>>>>>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>>>>>> >>>>>>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>>>>>> Check the site with examples before you ask questions: >>>>>>> http://www.1t3xt.info/examples/ >>>>>>> You can also search the keywords list: >>>>>>> http://1t3xt.info/tutorials/keywords/ >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> -- >>>> View this message in context: >>>> http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27708516.html >>>> Sent from the iText - General mailing list archive at Nabble.com. >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Download Intel? Parallel Studio Eval >>>> Try the new software tools for yourself. Speed compiling, find bugs >>>> proactively, and fine-tune applications for parallel performance. >>>> See why Intel Parallel Studio got high marks during beta. >>>> http://p.sf.net/sfu/intel-sw-dev >>>> _______________________________________________ >>>> iText-questions mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>>> >>>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>>> Check the site with examples before you ask questions: >>>> http://www.1t3xt.info/examples/ >>>> You can also search the keywords list: >>>> http://1t3xt.info/tutorials/keywords/ >>>> >>>> ------------------------------------------------------------------------------ >>>> Download Intel? Parallel Studio Eval >>>> Try the new software tools for yourself. Speed compiling, find bugs >>>> proactively, and fine-tune applications for parallel performance. >>>> See why Intel Parallel Studio got high marks during beta. >>>> http://p.sf.net/sfu/intel-sw-dev >>>> _______________________________________________ >>>> iText-questions mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>>> >>>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>>> Check the site with examples before you ask questions: >>>> http://www.1t3xt.info/examples/ >>>> You can also search the keywords list: >>>> http://1t3xt.info/tutorials/keywords/ >>>> >>>> >>> >>> -- >>> View this message in context: >>> http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27709815.html >>> Sent from the iText - General mailing list archive at Nabble.com. >>> >>> >>> ------------------------------------------------------------------------------ >>> Download Intel? Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> _______________________________________________ >>> iText-questions mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>> >>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>> Check the site with examples before you ask questions: >>> http://www.1t3xt.info/examples/ >>> You can also search the keywords list: >>> http://1t3xt.info/tutorials/keywords/ >>> >>> ------------------------------------------------------------------------------ >>> Download Intel? Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> _______________________________________________ >>> iText-questions mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/itext-questions >>> >>> Buy the iText book: http://www.1t3xt.com/docs/book.php >>> Check the site with examples before you ask questions: >>> http://www.1t3xt.info/examples/ >>> You can also search the keywords list: >>> http://1t3xt.info/tutorials/keywords/ >>> >>> >> >> -- >> View this message in context: >> http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27710159.html >> Sent from the iText - General mailing list archive at Nabble.com. >> >> >> ------------------------------------------------------------------------------ >> Download Intel? Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> _______________________________________________ >> iText-questions mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/itext-questions >> >> Buy the iText book: http://www.1t3xt.com/docs/book.php >> Check the site with examples before you ask questions: >> http://www.1t3xt.info/examples/ >> You can also search the keywords list: >> http://1t3xt.info/tutorials/keywords/ > > _________________________________________________________________ > Hotmail: Powerful Free email with security by Microsoft. > http://clk.atdmt.com/GBL/go/201469230/direct/01/ > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > > Buy the iText book: http://www.1t3xt.com/docs/book.php > Check the site with examples before you ask questions: > http://www.1t3xt.info/examples/ > You can also search the keywords list: > http://1t3xt.info/tutorials/keywords/ > > -- View this message in context: http://old.nabble.com/Using-Images-extracted-from-a-pdf-tp27693711p27710517.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/ ------------------------------ ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev ------------------------------ _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions End of iText-questions Digest, Vol 45, Issue 101 ************************************************ ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/ ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions Buy the iText book: http://www.1t3xt.com/docs/book.php Check the site with examples before you ask questions: http://www.1t3xt.info/examples/ You can also search the keywords list: http://1t3xt.info/tutorials/keywords/
