Extract An Image From A Pdf File Using ITextSharp?
Jul 9, 2010
I'm currently trying to extract an image from a pdf file using iTextSharp.
The pdf is made from a scanner: it has a single page that contains one big image.
When looking at the file I find the following:
<< /Type /XObject /Subtype /Image /Name /Obj3 /Width 2480 /Height 3507 /ColorSpace /DeviceGray /BlackIs1 true /BitsPerComponent 1 /Length 5 0 R /Filter /CCITTFaxDecode /DecodeParms << /K -1 /Columns 2480 >> >> stream
[Code].....
But, that doesn't work as I get one big black tiff file with different shades of gray on top.
Does anyone know a way how I can decode those CCITTFaxDecode images?
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Sep 23, 2009
am trying to extract a preview image (jpg file) from a canon raw (cr2) photo file using the well known program exiftoolExtracting certain meta data works fine with this kind of code:
Private Sub GetExifData(ByRef id As ImageDataType)
Dim ExifTool As New Process
Dim ExifToolStartInfo As New ProcessStartInfo
[code]....
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May 6, 2011
extracting all URL's from a .PDF File and load them in a listbox using itextsharp. After searching i found the following code from STANAV but don't it gives an error on the line of code in red and how do i load this URL links in a listbox.
[Code]...
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May 9, 2009
I need to parse some text to extract the name/path of an image file inside an X file. The part of the file looks something like this:
TextureFilename {
"C:\\Users\\USER\\Documents\\Map\\Textures\\Grass01.dds";
}
[code].....
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Nov 16, 2008
I would like to know if anyone could possibly write something to open a file containing hex data select data from offset: E000 to the end of the file then save it as a JPEG image.
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Aug 10, 2010
I have created a PNG image that is 200 DPI, and perfectly sized for a landscape A4 page size. I needed to convert this to a PDF document, so I've used the iTextSharp library with the code below.This all works, however the image quality has degraded.
Public Sub ConvertPNGtoPDF(ByVal inputFile As String, ByVal outputFile As String)
Using fs As New FileStream(outputFile, FileMode.Create, FileAccess.ReadWrite, FileShare.None)
Dim document As New Document(PageSize.A4.Rotate, 0, 0, 0, 0)
[code]....
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Mar 12, 2009
Is this software what i need to install to extract data from PDF documents using 2005? If so is this the link i need to get it from? [url] I just got no idea about itextsharp
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Mar 15, 2011
I have an instance where I have a logo image as part of some artwork..If a user uploads a new logo I have a form field which is larger than the default logo.I then use that form field to position the new image.
The problem is I need to set the background colour of that form field to white so that it covers the old logo in the event that the new image is smaller than the old logo..
what I have done is:foreach (var imageField in imageReplacements)
{
fields.SetFieldProperty(imageField.Key, "bgcolor", iTextSharp.text.Color.WHITE, null);
fields.RegenerateField(imageField.Key);
PdfContentByte overContent = stamper.GetOverContent(imageField.Value.PageNumber);
float[] logoArea = fields.GetFieldPositions(imageField.Key);
[Code]...
The problem with this is that the background colour of the field is set to white and the image then doesn't appear.. i remove the SetFieldProperty and RegenerateField commands and the image replacement works fine.is there a way to set a stacking order on layers?
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Dec 15, 2009
in vb.net is it possible to get the coordinates of an image like if i do a
document.add (jpeg_image)
x_coordinate = jpeg_image.xcoordinate???????
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Dec 15, 2009
i need to add a data table right after an image on a PDF in vb.net
[Code]...
i highlighted broccoli, buckwheat, butter, cabbage. these are all part of a data table that is supposed to go after the bottom SEVERE word because the entire thing that you see is one image called jpg2
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Dec 18, 2009
i have an image that i just want to place all the way at the bottom of the page. how do i do this?
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Oct 21, 2009
the user will pick an image on their hardrive and i will put it on a pdf file using itextsharp with vb.net. how do i manually set the dimensions of the picture?
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Aug 3, 2010
I have iTextSharp creating a pdf for me in VB.net. Everything was working famously, except now I want to embed an image. I tried this:
Dim test = My.Resources.MyImage
Dim logo = Image.GetInstance(test)
This an error though:
'GetInstance' cannot be called with these arguments
It appears as though it expects a path, and is getting a System.Drawing.Bitmap type.
Is there any way that I can add a project resource image to my PDF?
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Mar 26, 2010
I'm using iTextSharp to print a PDF document. Everything goes ok until I have to print the company logo in it. First I noticed that the logo had poor quality, but after testing with several images, I realize that was the iTextSharp rendering it poorly.The test I did to say this was to print the PDF using my code and then edit the document with Acrobat 8.0 and I drew an image. Then printed the two documents and saw the noticeable difference.My question is that if anyone know if this can be due to a scaling problem where I'm failing to tell iTextSharp how it must render the image or is an iTextSharp limitation.
[Code]...
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Jun 3, 2012
I am placing and image using this [code]It works perfectly however when my document is extended to second or third page.. it does not stays on the first page.. it stays on same position however moves to the last page
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Dec 20, 2011
I am using Stanav's PdfManipulation2.AddImageToPage(..., Pages) for iTextSharp library (v5.1.3) and was not able to add the image to specific pages: e.g. to add to only page 1 and 3 of a five pages PDF
Dim Pages() As Integer
Pages = New Integer() {1, 3}
PdfManipulation2.AddImageToPage(..., Pages)
Calling AddImageToPage() with the the optional Pages parameter will add the image to all pages though.
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Oct 13, 2007
I need to extract 8 bit grayscale image.
My plan is this:
1. input the picture to a picture box no 1
2. load into memory
3. extract all value to a 2D array matriks
4. process the picture
5. Show the result in picture box no 2
6. End
I met a serious problem when i want to load it to memory. For a faster process i use Graphics class (i've got this trick from my friend). but later I found out that graphics wont work for PixelFormat.Format8bppIndexed.
Here's the code:
Imports System.Drawing.Imaging
Imports System.Runtime.InteropServices.Marshal
Public Class LockImage
[Code].....
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May 24, 2012
I am trying to send PDF file using itextsharp, the email sends fine but with out the pdf attachment.
Here is my code :
Dim pdfFile As MemoryStream = New MemoryStream()
Dim d As Document = New Document(PageSize.A4, 60, 60, 40, 40)
Dim w As PdfWriter = PdfWriter.GetInstance(d, pdfFile)
w.Open()
w.Add(New Paragraph("do foo something "))
[Code] .....
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Oct 30, 2008
I need to create a PDF drawing of our products with dimensions filled in, based on template files. After the user selects the proper template file for the desired product, a window should pop up that prompts the user for the necessary dimensions, such as width, length, etc. Then the program would fill in all the fields on the template form with the proper values. Some fields would just be filled with the exact values that the user enters in, but other fields may require a calculated value based on the entered values. ie. Overall width = nominal width + 6. So somehow I need to figure out how to make the template hold the equations. Can anyone offer me some guidance on how to make this work the way I described? Can iTextSharp determine if a PDF file has fields in it? Can it loop through all the fields & get the field names?
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Jun 8, 2010
I run a software development firm that develops application for Windows Vista or higher. Windows Vista has a new feature called large icons, that allows display of up to 256X256 icons.
However, if I make an image that contains this icon file, the image just assumes that it should use the 32X32 one in the ICO file, even if I scale the image up to like 500X500 (in that case, it just scales the 32X32 one up).
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Jun 6, 2011
How can i get this image back to the disk from the database using vb.Net?
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May 24, 2012
Using vb.net how to extract text from captcha images
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May 4, 2012
I am new to VB in my job I need to extract image from word document for that I got some coding for that but while compiling it encounter with error.
Office Tool: MS Office 2003
Sub ImageToIncludePicture()
Dim oShp As InlineShape
If ActiveDocument.InlineShapes.Count <> 0 Then
Dim oFSO As New Scripting.FileSystemObject
[Code] ......
Dated 05/05/2012.
It works properly.
Before deploy the template Specify the path as per the code.
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May 4, 2012
i need to extract image from word document for that i got some coding for that but while compiling it encounter with error herewith i post my coding
Office Tool: MS Office 2003
Sub ImageToIncludePicture()
Dim oShp As InlineShape
If ActiveDocument.InlineShapes.Count <> 0 Then
[Code]....
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Mar 1, 2011
I am trying to convert a simple html file into pdf using iTextSharp, But it is not working. I am getting error :
Cannot implicitly convert type 'System.Collections.ArrayList' to 'System.Collections.Generic.List<iTextSharp.text.IElement>
d
private void Form1_Load(object sender, EventArgs e)
[Code].....
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Oct 11, 2009
I want to create a pdf file from Binary data. I looked around and found examples using iTextSharp by fetching data from the database.[code]...
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Dec 15, 2009
I have a small vb.net app that have a few images in an embedded resource.Is there a way I could extract one of those images to a folder from the same exe that contains the resource?, like clicking a button, selecting a folder to save it and extracting the image there
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Jul 27, 2010
I have a small vb.net app that have a few images in an embedded resource. Is there a way I could extract one of those images to a folder from the same exe that contains the resource?, like clicking a button, selecting a folder to save it and extracting the image there.
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May 31, 2009
I'm looking for a way to extract .jpg files from .wmv files at given intervals. For instance, if a clip is 1 minute long and I ask for 6 thumbnails, it will give me one every 10 seconds.Can anyone point me in the right direction for anything that may already exist for extracting single frames from video?
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Nov 10, 2009
I can't really figure out how to extract frames and what not from an animated image stored in a picturebox. I made a post earlier similar to this matter. But now I must ask how it is that you work with GetFrame and SetActiveFrame.
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