Pdf parser Image extraction from pdf

Question

I am using iTextsharp to extract images from the PDF file i am able to extract images but the extracted images are not in correct format (i.e. it looks like negative proof).

Ring Zhong · Answer

Hi any code you use? so that we could find the problem thank you. maybe you could evaluate another component here is code for you to have a try using System; using System.Collections.Generic; using System.Text; using System.Drawing; using Spire.Pdf; namespace ExtractImagesFromPDF { class Program { static void Main(string[] args) { //Instantiate an object of Spire.Pdf.PdfDocument PdfDocument doc = new PdfDocument(); //Load a PDF file doc.LoadFromFile(sample.pdf); List ListImage = new List(); for (int i = 0; i { // Get an object of Spire.Pdf.PdfPageBase PdfPageBase page = doc.Pages[i]; // Extract images from Spire.Pdf.PdfPageBase Image[] images = page.ExtractImages(); if (images != null && images.Length > 0) { ListImage.AddRange(images); } } if (ListImage.Count > 0) { for (int i = 0; i { Image image = ListImage[i]; image.Save(image + (i + 1).ToString() + .png System.Drawing.Imaging.ImageFormat.Png); } System.Diagnostics.Process.Start(image1.png); } } } } Source: How to Extract Image From PDF in C#?

Hugo Ivan · Answer

I searched internet and found the following thread that might help: http://stackoverflow.com/questions/5945244/extract-image-from-pdf-using-itextsharp I am currently using leadtools to load PDF files as images and save them to TIFF format. Mote details can be found here: http://support.leadtools.com/SupportPortal/CS/forums/22379/showpost.aspx

Saroj Kumar Sahu · Answer

https://psycodedeveloper.wordpress.com/2013/01/10/how-to-extract-images-from-pdf-files-using-c-and-itextsharp/ http://www.vbforums.com/showthread.php?530736-2005-Extract-Images-from-a-PDF-file-using-iTextSharp

Upendra Pratap Shahi · Answer

http://stackoverflow.com/questions/802269/extract-images-using-itextsharp http://www.thevalvepage.com/swmonkey/2014/11/26/extract-images-from-pdf-files-using-itextsharp/

yehudi li · Answer

Maybe you need try some third part PDF converter I used pqScan PDF to Image control  it can extract image from PDF perfectly. If you want you can have a try.

arron lee · Answer

I am not using iTextsharp to extract images from the PDF file. I have only tried to edit PDF files using the freetrial package of another imaging document manager . But I have never met such a problem. You can change another tool to try it again. I hope you success. Good luck. Best regards Arron

chandra shanker · Answer

string sFilePath = Test3.pdf ; int pageNum = 1 ; PdfReader pdf = new PdfReader ( sFilePath ); PdfDictionary pg = pdf . GetPageN ( pageNum ); PdfDictionary res = ( PdfDictionary ) PdfReader . GetPdfObject ( pg . Get ( PdfName . RESOURCES )); PdfDictionary xobj = ( PdfDictionary ) PdfReader . GetPdfObject ( res . Get ( PdfName . XOBJECT )); if ( xobj == null ) { return ; } int imageCount = 0 ; foreach ( PdfName name in xobj . Keys ) { PdfObject obj = xobj . Get ( name ); if (! obj . IsIndirect ()) { continue ; } PdfDictionary tg = ( PdfDictionary ) PdfReader . GetPdfObject ( obj ); PdfName type = ( PdfName ) PdfReader . GetPdfObject ( tg . Get ( PdfName . SUBTYPE )); if (! type . Equals ( PdfName . IMAGE )) { continue ; } int XrefIndex = Convert . ToInt32 ((( PRIndirectReference ) obj ). Number . ToString ( System . Globalization . CultureInfo . InvariantCulture )); PdfObject pdfObj = pdf . GetPdfObject ( XrefIndex ); PdfStream pdfStrem = ( PdfStream ) pdfObj ; byte [] bytes = PdfReader . GetStreamBytesRaw (( PRStream ) pdfStrem ); if ( bytes == null ) { continue ; } using ( System . IO . MemoryStream memStream = new System . IO . MemoryStream ( bytes )) { try { memStream . Position = 0 ; System . Drawing . Image img = System . Drawing . Image . FromStream ( memStream ); if (! Directory . Exists ( imgPath )) Directory . CreateDirectory ( imgPath ); string path = Path . Combine ( imgPath  String . Format ( @{0}.jpg  ++ imageCount )); System . Drawing . Imaging . EncoderParameters parms = new System . Drawing . Imaging . EncoderParameters ( 1 ); parms . Param [ 0 ] = new System . Drawing . Imaging . EncoderParameter ( System . Drawing . Imaging . Encoder . Compression  0 ); var jpegEncoder = ImageCodecInfo . GetImageEncoders (). ToList (). Find ( x => x . FormatID == ImageFormat . Jpeg . Guid ); img . Save ( path  jpegEncoder  parms ); } catch ( Exception ex ) { } } }