Thread: image convertion jpg -> pgm

i am looking for something that i can read in a .jpg file and convert it to a pgm file then write that file, does anyone know anythign like this. i have looked at many libraries and most of them do a crap load of stuff but they dont end up working anyhow. i just need this simple task, and i would preffer to program it but i do not know how to go about this but i thought that there might be something our there that can guide me along the way. i am using msvc++ and the end product will be done in win32 api but for now this part can be done in dos until i get something working. any input would be awsome.

I believe PGM is a unix greyscale bitmap format, no wonder you cannot find many/any Windows toolkits which support it.

However, I found this link for you, which describes the PGM file format.

http://www.cs.ubc.ca/spider/ladic/text/pgm.txt

well, what i need is the pgm file format, i know what structure it is in its just the opening and decompressing the jpg thats a problem
is there a way just to convert the jpg to raw data? and yes i have found tuns of linux / unix applications and source but unfortunately the people that pay my do not need / use linux / unix so i am out of luck there.

thanks i will give it a look