The way I am extracting images input stream is wrong.
byte[] im = PdfReader.getStreamBytesRaw((PRStream)(stream));
InputStream inputStream = new ByteArrayInputStream(im);                 
BufferedImage bufferedImage= ImageIO.read(inputStream);

even I used the above code to create the image instance of image input
stream,
Its working fine with the jpeg images are embedded in pdf document not with
other images.
java.io.IOException: The byte array is not a recognized imageformat.


Getting error message

Leonard Rosenthol-3 wrote:
> 
> PDF images are NOT in a standard format - they are "arrays of color
> values" in a specific colorspace with a certain number of bits per
> component and potentially processed with one or more "filters".  Details
> are described in ISO 32000-1.
> 
> As such, you will need to extract the image stream into some "image
> processing library" that knows what to do with the various structures and
> then can also, possibly, save them out to various image formats.   JAI is
> probably a good place to look.
> 
> -----Original Message-----
> From: java.geek [mailto:java.g...@rediffmail.com] 
> Sent: Sunday, November 29, 2009 9:12 AM
> To: itext-questions@lists.sourceforge.net
> Subject: [iText-questions] Extract PDF embedded images using iText
> 
> 
> Hi All, I am trying to extract images from pdf document using iText
> library.
>  
> I am able to create the instance of only JPEG format(*.jpg, *.jpeg,
> *.jpe).
> **** Image imageObject = Image.getInstance(image); ****
> Not other format images are embedded in PDF document.
> 
> 
> public void extractImagesInfo(){
>                 try{
>                         PdfReader chartReader = new
> PdfReader("MyPdf.pdf");
>                  for (int i = 0; i < chartReader.getXrefSize(); i++) {
>                   PdfObject pdfobj = chartReader.getPdfObject(i);
>                   if (pdfobj != null && pdfobj.isStream()) {
>                     PdfStream stream = (PdfStream) pdfobj;
>                     PdfObject pdfsubtype = stream.get(PdfName.SUBTYPE);
>                     //System.out.println("Stream subType: " + pdfsubtype);
>                     if (pdfsubtype != null &&
> pdfsubtype.toString().equals(PdfName.IMAGE.toString())) {
>                 byte[] image = PdfReader.getStreamBytesRaw((PRStream)
> stream);
>                 Image imageObject = Image.getInstance(image);
>                 System.out.println("Resolution" + imageObject.getDpiX());
>                 System.out.println("Height" + imageObject.getHeight());
>                 System.out.println("Width" + imageObject.getWidth());
>                
>                     }
>                   }
>                 }
>                 }catch(Exception e){
>                 e.printStackTrace();
>                 }
>                
>         } 
> -- 
> View this message in context:
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> Sent from the iText - General mailing list archive at Nabble.com.
> 
> 
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> 
> 

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