[jira] [Created] (PDFBOX-5531) wrong image data is extracted from PDF having single image

["Komal (Jira)" <ji...@apache.org>]

Komal created PDFBOX-5531:
-----------------------------

             Summary: wrong image data is extracted from PDF having single image
                 Key: PDFBOX-5531
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5531
             Project: PDFBox
          Issue Type: Bug
    Affects Versions: 2.0.26
            Reporter: Komal


Dear Concerned,

We are trying to extract image from PDF having single image with following properties: CCITTFaxDecode decoded G4 compression, 150 dpi but when following code of PDFBox is used than we get LZW image with 96 dpi

  PDDocument document = PDDocument.load(new File("D:\\extractImage\\in\\20211125174048BT Exception Documents.pdf"));
        PDPageTree list = document.getPages();
        for (PDPage page : list) {
            PDResources pdResources = page.getResources();
            for (COSName c : pdResources.getXObjectNames()) {
                PDXObject o = pdResources.getXObject(c);
                if (o instanceof org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject) {

 BufferedImage img=   ((org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject)o).getImage();

}

}

}

 

Also we we try to get raw stream byte data of image using following method , the byte array coming is incorrect.

PDPage page1 = reader.getPage(pageNumber-1);
            PDResources pdResources = page1.getResources();
            for (COSName c : pdResources.getXObjectNames()) {
                PDXObject o = pdResources.getXObject(c);
                PDImageXObject ob = (PDImageXObject)o;
            ImageXObject xObj1 = new ImageXObject();
            xObj1.xObject = (PDImageXObject) o;

COSStream imageStream = ob.getCOSObject();

            PDStream stream = (new PDStream(imageStream));
        //    BufferedImage image = ob.getImage();
            byte[] streamDataBuffer = stream.toByteArray(); 

 

kindly provide a method which can return black and white image object and image raw stream byte array.

Thanks in advance.

Regards,

Komal Walia



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