static Boolean ConvertSpecificFormats()
{
//////////////////////////////////////////////////////////////////////////
Boolean err = false;
try
{
using (PDFDoc pdfdoc = new PDFDoc())
{
Console.WriteLine("Converting from XPS");
pdftron.PDF.Convert.FromXps(pdfdoc, inputPath + "simple-xps.xps");
pdfdoc.Save(outputPath + "xps2pdf v2.pdf", SDFDoc.SaveOptions.e_remove_unused);
Console.WriteLine("Saved xps2pdf v2.pdf");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
using (PDFDoc pdfdoc = new PDFDoc())
{
Console.WriteLine("Converting from EMF");
pdftron.PDF.Convert.FromEmf(pdfdoc, inputPath + "simple-emf.emf");
pdfdoc.Save(outputPath + "emf2pdf v2.pdf", SDFDoc.SaveOptions.e_remove_unused);
Console.WriteLine("Saved emf2pdf v2.pdf");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
using (PDFDoc pdfdoc = new PDFDoc())
{
// Add a dictionary
ObjSet set = new ObjSet();
Obj options = set.CreateDict();
// Put options
options.PutNumber("FontSize", 15);
options.PutBool("UseSourceCodeFormatting", true);
options.PutNumber("PageWidth", 12);
options.PutNumber("PageHeight", 6);
// Convert from .txt file
Console.WriteLine("Converting from txt");
pdftron.PDF.Convert.FromText(pdfdoc, inputPath + "simple-text.txt", options);
pdfdoc.Save(outputPath + "simple-text.pdf", SDFDoc.SaveOptions.e_remove_unused);
Console.WriteLine("Saved simple-text.pdf");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
using (PDFDoc pdfdoc = new PDFDoc(inputPath + "newsletter.pdf"))
{
// Convert PDF document to SVG
Console.WriteLine("Converting pdfdoc to SVG");
pdftron.PDF.Convert.ToSvg(pdfdoc, outputPath + "pdf2svg v2.svg");
Console.WriteLine("Saved pdf2svg v2.svg");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
// Convert PNG image to XPS
Console.WriteLine("Converting PNG to XPS");
pdftron.PDF.Convert.ToXps(inputPath + "butterfly.png", outputPath + "butterfly.xps");
Console.WriteLine("Saved butterfly.xps");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
// Convert MSWord document to XPS
Console.WriteLine("Converting DOCX to XPS");
pdftron.PDF.Convert.ToXps(inputPath + "simple-word_2007.docx", outputPath + "simple-word_2007.xps");
Console.WriteLine("Saved simple-word_2007.xps");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
// Convert PDF document to XPS
Console.WriteLine("Converting PDF to XPS");
pdftron.PDF.Convert.ToXps(inputPath + "newsletter.pdf", outputPath + "newsletter.xps");
Console.WriteLine("Saved newsletter.xps");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
// Convert PDF document to HTML
Console.WriteLine("Converting PDF to HTML");
pdftron.PDF.Convert.ToHtml(inputPath + "newsletter.pdf", outputPath + "newsletter");
Console.WriteLine("Saved newsletter as HTML");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
// Convert PDF document to EPUB
Console.WriteLine("Converting PDF to EPUB");
pdftron.PDF.Convert.ToEpub(inputPath + "newsletter.pdf", outputPath + "newsletter.epub");
Console.WriteLine("Saved newsletter.epub");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
//////////////////////////////////////////////////////////////////////////
try
{
// Convert PDF document to multipage TIFF
Console.WriteLine("Converting PDF to multipage TIFF");
pdftron.PDF.Convert.TiffOutputOptions tiff_options = new pdftron.PDF.Convert.TiffOutputOptions();
tiff_options.SetDPI(200);
tiff_options.SetDither(true);
tiff_options.SetMono(true);
pdftron.PDF.Convert.ToTiff(inputPath + "newsletter.pdf", outputPath + "newsletter.tiff", tiff_options);
Console.WriteLine("Saved newsletter.tiff");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
err = true;
}
return(err);
}
/// <summary>
//-----------------------------------------------------------------------------------
// This sample illustrates how to embed various raster image formats
// (e.g. TIFF, JPEG, JPEG2000, JBIG2, GIF, PNG, BMP, etc.) in a PDF document.
//-----------------------------------------------------------------------------------
/// </summary>
static void Main(string[] args)
{
PDFNet.Initialize();
// Relative path to the folder containing test files.
string input_path = "../../TestFiles/";
string output_path = "../../TestFiles/Output/";
try
{
using (PDFDoc doc = new PDFDoc())
using (ElementBuilder bld = new ElementBuilder()) // Used to build new Element objects
using (ElementWriter writer = new ElementWriter()) // Used to write Elements to the page
{
Page page = doc.PageCreate(); // Start a new page
writer.Begin(page); // Begin writing to this page
// ----------------------------------------------------------
// Embed a JPEG image to the output document.
Image img = Image.Create(doc, input_path + "peppers.jpg");
// You can also directly add any .NET Bitmap. The following commented-out code
// is equivalent to the above line:
// System.Drawing.Bitmap bmp;
// System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(input_path + "peppers.jpg");
// Image img = Image.Create(doc, bmp);
Element element = bld.CreateImage(img, 50, 500, img.GetImageWidth() / 2, img.GetImageHeight() / 2);
writer.WritePlacedElement(element);
// ----------------------------------------------------------
// Add a PNG image to the output file
img = Image.Create(doc, input_path + "butterfly.png");
element = bld.CreateImage(img, new Matrix2D(100, 0, 0, 100, 300, 500));
writer.WritePlacedElement(element);
// ----------------------------------------------------------
// Add a GIF image to the output file
img = Image.Create(doc, input_path + "pdfnet.gif");
element = bld.CreateImage(img, new Matrix2D(img.GetImageWidth(), 0, 0, img.GetImageHeight(), 50, 350));
writer.WritePlacedElement(element);
// ----------------------------------------------------------
// Add a TIFF image to the output file
img = Image.Create(doc, input_path + "grayscale.tif");
element = bld.CreateImage(img, new Matrix2D(img.GetImageWidth(), 0, 0, img.GetImageHeight(), 10, 50));
writer.WritePlacedElement(element);
writer.End(); // Save the page
doc.PagePushBack(page); // Add the page to the document page sequence
// ----------------------------------------------------------
// Add a BMP image to the output file
/*
* bmp = new System.Drawing.Bitmap(input_path + "pdftron.bmp");
* img = Image.Create(doc, bmp);
* element = bld.CreateImage(img, new Matrix2D(bmp.Width, 0, 0, bmp.Height, 255, 700));
* writer.WritePlacedElement(element);
*
* writer.End(); // Finish writing to the page
* doc.PagePushBack(page);
*/
// ----------------------------------------------------------
// Embed a monochrome TIFF. Compress the image using lossy JBIG2 filter.
page = doc.PageCreate(new pdftron.PDF.Rect(0, 0, 612, 794));
writer.Begin(page); // begin writing to this page
// Note: encoder hints can be used to select between different compression methods.
// For example to instruct PDFNet to compress a monochrome image using JBIG2 compression.
ObjSet hint_set = new ObjSet();
Obj enc = hint_set.CreateArray(); // Initialize encoder 'hint' parameter
enc.PushBackName("JBIG2");
enc.PushBackName("Lossy");
img = pdftron.PDF.Image.Create(doc, input_path + "multipage.tif", enc);
element = bld.CreateImage(img, new Matrix2D(612, 0, 0, 794, 0, 0));
writer.WritePlacedElement(element);
writer.End(); // Save the page
doc.PagePushBack(page); // Add the page to the document page sequence
// ----------------------------------------------------------
// Add a JPEG2000 (JP2) image to the output file
// Create a new page
page = doc.PageCreate();
writer.Begin(page); // Begin writing to the page
// Embed the image.
img = pdftron.PDF.Image.Create(doc, input_path + "palm.jp2");
// Position the image on the page.
element = bld.CreateImage(img, new Matrix2D(img.GetImageWidth(), 0, 0, img.GetImageHeight(), 96, 80));
writer.WritePlacedElement(element);
// Write 'JPEG2000 Sample' text string under the image.
writer.WriteElement(bld.CreateTextBegin(pdftron.PDF.Font.Create(doc, pdftron.PDF.Font.StandardType1Font.e_times_roman), 32));
element = bld.CreateTextRun("JPEG2000 Sample");
element.SetTextMatrix(1, 0, 0, 1, 190, 30);
writer.WriteElement(element);
writer.WriteElement(bld.CreateTextEnd());
writer.End(); // Finish writing to the page
doc.PagePushBack(page);
doc.Save(output_path + "addimage.pdf", SDFDoc.SaveOptions.e_linearized);
Console.WriteLine("Done. Result saved in addimage.pdf...");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main(string[] args)
{
// The first step in every application using PDFNet is to initialize the
// library and set the path to common PDF resources. The library is usually
// initialized only once, but calling Initialize() multiple times is also fine.
PDFNet.Initialize();
try
{
// Optional: Set ICC color profiles to fine tune color conversion
// for PDF 'device' color spaces. You can use your own ICC profiles.
// Standard Adobe color profiles can be download from Adobes site:
// http://www.adobe.com/support/downloads/iccprofiles/iccprofiles_win.html
//
// Simply drop all *.icc files in PDFNet resource folder or you specify
// the full pathname.
//---
// PDFNet.SetResourcesPath("../../../../../resources");
// PDFNet.SetColorManagement();
// PDFNet.SetDefaultDeviceCMYKProfile("USWebCoatedSWOP.icc"); // will search in PDFNet resource folder.
// PDFNet.SetDefaultDeviceRGBProfile("AdobeRGB1998.icc");
// Optional: Set predefined font mappings to override default font
// substitution for documents with missing fonts. For example:
//---
// PDFNet.AddFontSubst("StoneSans-Semibold", "C:/WINDOWS/Fonts/comic.ttf");
// PDFNet.AddFontSubst("StoneSans", "comic.ttf"); // search for 'comic.ttf' in PDFNet resource folder.
// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Identity, "C:/WINDOWS/Fonts/arialuni.ttf");
// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Japan1, "C:/Program Files/Adobe/Acrobat 7.0/Resource/CIDFont/KozMinProVI-Regular.otf");
// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Japan2, "c:/myfonts/KozMinProVI-Regular.otf");
//
// If fonts are in PDFNet resource folder, it is not necessary to specify
// the full path name. For example,
//---
// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_Korea1, "AdobeMyungjoStd-Medium.otf");
// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_CNS1, "AdobeSongStd-Light.otf");
// PDFNet.AddFontSubst(PDFNet.CharacterOrdering.e_GB1, "AdobeMingStd-Light.otf");
}
catch (Exception)
{
Console.WriteLine("The specified color profile was not found.");
}
// Relative path to the folder containing test files.
string input_path = "../../TestFiles/";
string output_path = "../../TestFiles/Output/";
using (PDFDraw draw = new PDFDraw())
{
//--------------------------------------------------------------------------------
// Example 1) Convert the first PDF page to PNG at 92 DPI.
// A three step tutorial to convert PDF page to an image.
try
{
// A) Open the PDF document.
using (PDFDoc doc = new PDFDoc(input_path + "tiger.pdf"))
{
// Initialize the security handler, in case the PDF is encrypted.
doc.InitSecurityHandler();
// B) The output resolution is set to 92 DPI.
draw.SetDPI(92);
// C) Rasterize the first page in the document and save the result as PNG.
Page pg = doc.GetPage(1);
draw.Export(pg, output_path + "tiger_92dpi.png");
Console.WriteLine("Example 1: tiger_92dpi.png");
// Export the same page as TIFF
draw.Export(pg, output_path + "tiger_92dpi.tif", "TIFF");
}
}
catch (PDFNetException e) {
Console.WriteLine(e.Message);
}
//--------------------------------------------------------------------------------
// Example 2) Convert the all pages in a given document to JPEG at 72 DPI.
ObjSet hint_set = new ObjSet(); // A collection of rendering 'hits'.
Console.WriteLine("Example 2:");
try
{
using (PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf"))
{
// Initialize the security handler, in case the PDF is encrypted.
doc.InitSecurityHandler();
draw.SetDPI(72); // Set the output resolution is to 72 DPI.
// Use optional encoder parameter to specify JPEG quality.
Obj encoder_param = hint_set.CreateDict();
encoder_param.PutNumber("Quality", 80);
// Traverse all pages in the document.
for (PageIterator itr = doc.GetPageIterator(); itr.HasNext(); itr.Next())
{
string output_filename = string.Format("newsletter{0:d}.jpg", itr.GetPageNumber());
Console.WriteLine("newsletter{0:d}.jpg", itr.GetPageNumber());
draw.Export(itr.Current(), output_path + output_filename, "JPEG", encoder_param);
}
}
Console.WriteLine("Done.");
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
try // Examples 3-6
{
// Common code for remaining samples.
using (PDFDoc tiger_doc = new PDFDoc(input_path + "tiger.pdf"))
{
// Initialize the security handler, in case the PDF is encrypted.
tiger_doc.InitSecurityHandler();
Page page = tiger_doc.GetPage(1);
//--------------------------------------------------------------------------------
// Example 3) Convert the first page to GDI+ Bitmap. Also, rotate the
// page 90 degrees and save the result as RAW.
draw.SetDPI(100); // Set the output resolution is to 100 DPI.
draw.SetRotate(Page.Rotate.e_90); // Rotate all pages 90 degrees clockwise.
BitmapInfo buf = draw.GetBitmap(page, PDFDraw.PixelFormat.e_rgb, false);
// Save the raw RGB data to disk.
string filename = "tiger_100dpi_rot90.raw";
System.IO.File.WriteAllBytes(output_path + filename, buf.Buffer);
Console.WriteLine("Example 3: tiger_100dpi_rot90.raw");
draw.SetRotate(Page.Rotate.e_0); // Disable image rotation for remaining samples.
//--------------------------------------------------------------------------------
// Example 4) Convert PDF page to a fixed image size. Also illustrates some
// other features in PDFDraw class such as rotation, image stretching, exporting
// to grayscale, or monochrome.
// Initialize render 'gray_hint' parameter, that is used to control the
// rendering process. In this case we tell the rasterizer to export the image as
// 1 Bit Per Component (BPC) image.
Obj mono_hint = hint_set.CreateDict();
mono_hint.PutNumber("BPC", 1);
// SetImageSize can be used instead of SetDPI() to adjust page scaling
// dynamically so that given image fits into a buffer of given dimensions.
draw.SetImageSize(1000, 1000); // Set the output image to be 1000 wide and 1000 pixels tall
draw.Export(page, output_path + "tiger_1000x1000.png", "PNG", mono_hint);
Console.WriteLine("Example 4: tiger_1000x1000.png");
draw.SetImageSize(200, 400); // Set the output image to be 200 wide and 300 pixels tall
draw.SetRotate(Page.Rotate.e_180); // Rotate all pages 90 degrees clockwise.
// 'gray_hint' tells the rasterizer to export the image as grayscale.
Obj gray_hint = hint_set.CreateDict();
gray_hint.PutName("ColorSpace", "Gray");
draw.Export(page, output_path + "tiger_200x400_rot180.png", "PNG", gray_hint);
Console.WriteLine("Example 4: tiger_200x400_rot180.png");
draw.SetImageSize(400, 200, false); // The third parameter sets 'preserve-aspect-ratio' to false.
draw.SetRotate(Page.Rotate.e_0); // Disable image rotation.
draw.Export(page, output_path + "tiger_400x200_stretch.jpg", "JPEG");
Console.WriteLine("Example 4: tiger_400x200_stretch.jpg");
//--------------------------------------------------------------------------------
// Example 5) Zoom into a specific region of the page and rasterize the
// area at 200 DPI and as a thumbnail (i.e. a 50x50 pixel image).
page.SetCropBox(new Rect(216, 522, 330, 600)); // Set the page crop box.
// Select the crop region to be used for drawing.
draw.SetPageBox(Page.Box.e_crop);
draw.SetDPI(900); // Set the output image resolution to 900 DPI.
draw.Export(page, output_path + "tiger_zoom_900dpi.png", "PNG");
Console.WriteLine("Example 5: tiger_zoom_900dpi.png");
// -------------------------------------------------------------------------------
// Example 6)
draw.SetImageSize(50, 50); // Set the thumbnail to be 50x50 pixel image.
draw.Export(page, output_path + "tiger_zoom_50x50.png", "PNG");
Console.WriteLine("Example 6: tiger_zoom_50x50.png");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
Obj cmyk_hint = hint_set.CreateDict();
cmyk_hint.PutName("ColorSpace", "CMYK");
//--------------------------------------------------------------------------------
// Example 7) Convert the first PDF page to CMYK TIFF at 92 DPI.
// A three step tutorial to convert PDF page to an image.
try
{
// A) Open the PDF document.
using (PDFDoc doc = new PDFDoc(input_path + "tiger.pdf"))
{
// Initialize the security handler, in case the PDF is encrypted.
doc.InitSecurityHandler();
// B) The output resolution is set to 92 DPI.
draw.SetDPI(92);
// C) Rasterize the first page in the document and save the result as TIFF.
Page pg = doc.GetPage(1);
draw.Export(pg, output_path + "out1.tif", "TIFF", cmyk_hint);
Console.WriteLine("Example 7: out1.tif");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
//--------------------------------------------------------------------------------
// Example 8) Export raster content to PNG using different image smoothing settings.
try
{
// A) Open the PDF document.
using (PDFDoc doc = new PDFDoc(input_path + "tiger.pdf"))
{
// Initialize the security handler, in case the PDF is encrypted.
doc.InitSecurityHandler();
// B) Get the page matrix
Page pg = doc.GetPage(1);
Page.Box box = Page.Box.e_crop;
Matrix2D mtx = pg.GetDefaultMatrix(true, box);
// We want to render a quadrant, so use half of width and height
double pg_w = pg.GetPageWidth(box) / 2;
double pg_h = pg.GetPageHeight(box) / 2;
// C) Scale matrix from PDF space to buffer space
double dpi = 96.0;
double scale = dpi / 72.0; // PDF space is 72 dpi
int buf_w = (int)(Math.Floor(scale * pg_w));
int buf_h = (int)(Math.Floor(scale * pg_h));
int bytes_per_pixel = 4; // BGRA buffer
int buf_size = buf_w * buf_h * bytes_per_pixel;
mtx.Translate(0, -pg_h); // translate by '-pg_h' since we want south-west quadrant
mtx = new Matrix2D(scale, 0, 0, scale, 0, 0) * mtx;
// D) Rasterize page into memory buffer, according to our parameters
byte[] buf;
PDFRasterizer rast = new PDFRasterizer();
buf = rast.Rasterize(pg, buf_w, buf_h, buf_w * bytes_per_pixel, bytes_per_pixel, true, mtx);
// buf now contains raw BGRA bitmap.
Console.WriteLine("Example 8: Successfully rasterized into memory buffer.");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
//--------------------------------------------------------------------------------
// Example 9) Export raster content to PNG using different image smoothing settings.
try
{
using (PDFDoc text_doc = new PDFDoc(input_path + "lorem_ipsum.pdf"))
{
text_doc.InitSecurityHandler();
draw.SetImageSmoothing(false, false);
string filename = "raster_text_no_smoothing.png";
draw.Export(text_doc.GetPageIterator().Current(), output_path + filename);
Console.WriteLine("Example 9 a): " + filename + ". Done.");
filename = "raster_text_smoothed.png";
draw.SetImageSmoothing(true, false /*default quality bilinear resampling*/);
draw.Export(text_doc.GetPageIterator().Current(), output_path + filename);
Console.WriteLine("Example 9 b): " + filename + ". Done.");
filename = "raster_text_high_quality.png";
draw.SetImageSmoothing(true, true /*high quality area resampling*/);
draw.Export(text_doc.GetPageIterator().Current(), output_path + filename);
Console.WriteLine("Example 9 c): " + filename + ". Done.");
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
//--------------------------------------------------------------------------------
// Example 10) Export separations directly, without conversion to an output colorspace
try
{
using (PDFDoc separation_doc = new PDFDoc(input_path + "op_blend_test.pdf"))
{
separation_doc.InitSecurityHandler();
Obj separation_hint = hint_set.CreateDict();
separation_hint.PutName("ColorSpace", "Separation");
draw.SetDPI(96);
draw.SetImageSmoothing(true, true);
draw.SetOverprint(PDFRasterizer.OverprintPreviewMode.e_op_on);
string filename = "merged_separations.png";
draw.Export(separation_doc.GetPageIterator().Current(), output_path + filename, "PNG");
Console.WriteLine("Example 10 a): " + filename + ". Done.");
filename = "separation";
draw.Export(separation_doc.GetPageIterator().Current(), output_path + filename, "PNG", separation_hint);
Console.WriteLine("Example 10 b): " + filename + "_[ink].png. Done.");
filename = "separation_NChannel.tif";
draw.Export(separation_doc.GetPageIterator().Current(), output_path + filename, "TIFF", separation_hint);
Console.WriteLine("Example 10 c): " + filename + ". Done.");
}
}
catch (PDFNetException e)
{
Console.WriteLine(e.Message);
}
} // using PDFDraw
}
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
// Initialize PDFNet before calling any other PDFNet function.
PDFNet.Initialize();
string input_path = "../../TestFiles/";
string output_path = "../../TestFiles/Output/";
string input_filename = "US061222892-a.pdf";
PDFDoc pdf_doc = new PDFDoc(input_path + input_filename);
pdf_doc.InitSecurityHandler();
SDFDoc cos_doc = pdf_doc.GetSDFDoc();
int num_objs = cos_doc.XRefSize();
for (int i = 1; i < num_objs; ++i)
{
Obj obj = cos_doc.GetObj(i);
if (obj != null && !obj.IsFree() && obj.IsStream())
{
// Process only images
DictIterator itr = obj.Find("Subtype");
if (!itr.HasNext() || itr.Value().GetName() != "Image")
{
continue;
}
pdftron.PDF.Image input_image = new pdftron.PDF.Image(obj);
pdftron.PDF.Image new_image = null;
// Process only gray-scale images
if (input_image.GetComponentNum() != 1)
{
continue;
}
int bpc = input_image.GetBitsPerComponent();
if (bpc != 1) // Recompress 1 BPC images
{
continue;
}
// Skip images that are already compressed using JBIG2
itr = obj.Find("Filter");
if (itr.HasNext() && itr.Value().IsName() &&
itr.Value().GetName() == "JBIG2Decode")
{
continue;
}
FilterReader reader = new FilterReader(obj.GetDecodedStream());
ObjSet hint_set = new ObjSet();
Obj hint = hint_set.CreateArray();
hint.PushBackName("JBIG2");
hint.PushBackName("Lossless");
hint.PushBackName("Threshold");
hint.PushBackNumber(0.4);
hint.PushBackName("SharePages");
hint.PushBackNumber(10000);
new_image = pdftron.PDF.Image.Create(
cos_doc,
reader,
input_image.GetImageWidth(),
input_image.GetImageHeight(),
1,
ColorSpace.CreateDeviceGray(),
hint // A hint to image encoder to use JBIG2 compression
);
Obj new_img_obj = new_image.GetSDFObj();
// Copy any important entries from the image dictionary
itr = obj.Find("ImageMask");
if (itr.HasNext())
{
new_img_obj.Put("ImageMask", itr.Value());
}
itr = obj.Find("Mask");
if (itr.HasNext())
{
new_img_obj.Put("Mask", itr.Value());
}
cos_doc.Swap(i, new_image.GetSDFObj().GetObjNum());
}
}
pdf_doc.Save(output_path + "US061222892_JBIG2.pdf", SDFDoc.SaveOptions.e_remove_unused);
pdf_doc.Close();
}
