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Topic: Image Extraction and Replacement in PDF File
Conf: (P-PDF) Developers, Msg: 54198
From: skajan
Date: 5/29/2002 05:04 PM

Hi Genies

Thanks for your great help so far.

Ok, now i like to make sure something before i start to do (am i too rude ?
sorry for this, I am good in programming language not English !!) .
Actually what i want to do is

1) Extract Image from a PDF

2) Insert Image into PDF


Extract Image from a PDF which is using FLATE Filter ( what i plan to do is
?)

a) Extract Image data between stream and endstream.

b) Decompress the data using zlib (we are getting binary data)

c) compress the data using libjpeg and save it as .jpg. (what function i
have to call)

is that correct sequence ?


Insert Image into PDF

a) uncompress the original image data using libjpeg. (what function i have
to call)

b) compress this data using zlib

c) Insert the data between stream and endstream and update the length.

Is that correct sequence ?


Thanks in advance
Shan







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