What is causing pdf to image to output blurry image?

[Puneeth kamath]

I am working on pdf to xml conversion. I achieved pdf to text by using pdf clown samples. Now I am able to extract the pdf to text and image as well.

But the problem is,the saved image is blurry.

else if (content is it.stefanochizzolini.clown.documents.contents.objects.GraphicsObject)
                {
                    /*=============================================================================
                     *  TO EXTRACT THE GRAPHICAL OBJECT WITHIN THE PDF
                     =============================================================================*/
                    ContentScanner.GraphicsObjectWrapper objectWrapper = level.CurrentWrapper;
                    if (objectWrapper == null)
                    {
                        continue;
                    }
 
 
                    /*
                      NOTE: Images can be represented on a page either as
                      external objects (XObject) or inline objects.
                    */
                    SizeF? imageSize = null; // Image native size.
                    /*if (objectWrapper is PdfDataObject)
                    {
                     ContentScanner.GraphicsObjectWrapper gobjectwrapper=(ContentScanner.GraphicsObjectWrapper)gobjectwrapper;
                        it.stefanochizzolini.clown.objects.PdfDataObject pdobjt=gobjectwrapper
                    }*/
                    //if(objectWrapper is Image)
                    //{
                    //    }
                    if (objectWrapper is ContentScanner.XObjectWrapper)
                    {
                        ContentScanner.XObjectWrapper xObjectWrapper = (ContentScanner.XObjectWrapper)objectWrapper;
                        it.stefanochizzolini.clown.documents.contents.xObjects.XObject Xobject = xObjectWrapper.XObject;
                        // Is the external object an image?
                        if (Xobject is it.stefanochizzolini.clown.documents.contents.xObjects.ImageXObject)
                        {
                            txtOutput.Text = txtOutput.Text + Environment.NewLine +
                              "External Image '" + xObjectWrapper.Name + "' (" + Xobject.BaseObject + ")"; // Image key and indirect reference.
 
                            imageSize = Xobject.Size; // Image native size.
 
                            PdfDataObject dataObject = Xobject.BaseDataObject;
;
                            PdfDictionary header = ((PdfStream)dataObject).Header;
                            if (header.ContainsKey(PdfName.Type) && header[PdfName.Type].Equals(PdfName.XObject) && header[PdfName.Subtype].Equals(PdfName.Image))
                            {
                                if (header[PdfName.Filter].Equals(PdfName.DCTDecode)) // JPEG image.
                                {
                                    // Get the image data (keeping it encoded)!
                                    IBuffer body1 = ((PdfStream)dataObject).GetBody(false);
 
                                    // Export the image!
 
                                    ExportImage(
                                      body1,
                                      txtOutputPath.Text + System.IO.Path.DirectorySeparatorChar + "Image_" + (index++) + ".bmp"
                                      );
                                }
                            }
 
 
 
                        }
 
 
 
 private void ExportImage(IBuffer data, string outputPath)
        {
            FileStream outputStream;
            try
            { outputStream = new FileStream(outputPath, FileMode.CreateNew); }
            catch (Exception e)
            { throw new Exception(outputPath + " file couldn't be created.", e); }
 
            try
            {
                BinaryWriter writer = new BinaryWriter(outputStream);
                writer.Write(data.ToByteArray());
                writer.Close();
                outputStream.Close();
            }
            catch (Exception e)
            { throw new Exception(outputPath + " file writing has failed.", e); }
 
            Console.WriteLine("Output: " + outputPath);
        }

[Puneeth kamath]

Now that extracted images are negative,actully it is correctly in MAC OS,but when it comes to windows it is showing negative image.Please help me to get the solution.