public RasterImage DecodeImage(
string imageObjectNumber
)
Public Function DecodeImage( _
ByVal imageObjectNumber As String _
) As RasterImage
public RasterImage decodeImage(String imageObjectNumber)
public:
RasterImage^ DecodeImage(
String^ imageObjectNumber
)
imageObjectNumber
String that specifies the PDF image object number to decode.
A Leadtools.RasterImage object.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Controls;
using Leadtools.Pdf;
using Leadtools.Svg;
using Leadtools.WinForms;
public void PDFDocumentDecodeImageExample()
{
string sourceFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf");
string destinationFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_pdfDecodeImage.tif");
using (PDFDocument document = new PDFDocument(sourceFileName))
{
document.Resolution = 200;
// Parse the objects in all pages
document.ParsePages(PDFParsePagesOptions.Objects, 1, -1);
RasterCodecs codecs = new RasterCodecs();
foreach (PDFDocumentPage page in document.Pages)
if (page.Objects != null && page.Objects.Count > 0)
foreach (PDFObject obj in page.Objects)
if (obj.ObjectType == PDFObjectType.Image)
using (RasterImage image = document.DecodeImage(obj.ImageObjectNumber))
codecs.Save(image, destinationFileName, RasterImageFormat.TifLzw, image.BitsPerPixel, 1, 1, -1, CodecsSavePageMode.Append);
codecs.Dispose();
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Controls
Imports Leadtools.Pdf
Imports Leadtools.Svg
Imports Leadtools.WinForms
Public Sub PDFDocumentDecodeImageExample()
Dim sourceFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf")
Dim destinationFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "LEAD_pdfDecodeImage.tif")
Using document As PDFDocument = New PDFDocument(sourceFileName)
document.Resolution = 200
' Parse the objects in all pages
document.ParsePages(PDFParsePagesOptions.Objects, 1, -1)
Dim codecs As RasterCodecs = New RasterCodecs()
For Each page As PDFDocumentPage In document.Pages
If Not page.Objects Is Nothing AndAlso page.Objects.Count > 0 Then
For Each obj As PDFObject In page.Objects
If obj.ObjectType = PDFObjectType.Image Then
Using image As RasterImage = document.DecodeImage(obj.ImageObjectNumber)
codecs.Save(image, destinationFileName, RasterImageFormat.TifLzw, image.BitsPerPixel, 1, 1, -1, CodecsSavePageMode.Append)
End Using
End If
Next obj
End If
Next page
codecs.Dispose()
End Using
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
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