Extracting CCITTFaxDecode images

Aspose.PDF Product Family
1

I'm currently trying to extract an image from a pdf file

The pdf is made from a scanner i.e ImagePDF: it has a single page that contains one big image.

this image is encoded with /ASCII85Decode /CCITTFaxDecode .

So i want to decode the stream..??? is it possible.???

When looking at the file I find the following:

PDF-1.4

1 0 obj

<<

/Type /XObject

/Subtype /Image

/Width 2544

/Height 3396

/ColorSpace 3 0 R

/BitsPerComponent 1

/DecodeParms [

<<

>>

<<

/Rows 3396

/BlackIs1 true

/Columns 2544

/K -1

>>

]

/Filter [

/ASCII85Decode

/CCITTFaxDecode

]

/Length 2 0 R

>>

stream

jb4%GH6W]o7mrTKL<rMVS?&$ukor/HN[!\IN/H%QM"2j*Th@p#8@g8gA2H\sk4=BSO<?i`4qgHu,tXA5&

:Q*8<6rNWXst#),O#fg7X=Vo/DnR_i'i[sDeY8@gW?dTH;FqJM1m

1-:oS#+2";:pL;[BtUkdkdq#UWC0%LG])K*8/U:dmE!fuGrWMFe7h(.Ah_3V6iK40<PNaGu'jP\?Ihl.@

2

Hi Satish,

Do you mean you just want to extract this image from the PDF file or you want to process this image after extracting it? Which platform you’re working with – .NET or Java? Also, please share the input PDF file with us, so we could investigate the issue at our end and guide you accordingly.

Regards,

3

yes process this image after extracting it, Actualy I want to decrypt the PDF stream.! and i am using .NET.!

4

Hi Satish,

I would like to share with you that Aspose.Pdf for .NET allows you to extract images from the PDF files. You may try the following example: Extract Images from the PDF File. If you want to apply OCR on the extracted image then you may try Aspose.OCR for .NET.

I hope this helps. If you find any further questions, please do let us know.
Regards,