image conversion

reza_zah1991 · 11-02-2013, 06:26 AM

Hi Folks,,

i want to read a image (like jpg)
& convert it to another Extension & format (like png)

and i want do it in depth,,

anybody have information??

aus9 · 11-02-2013, 06:31 AM

http://www.imagemagick.org/script/convert.php

reza_zah1991 · 11-02-2013, 06:37 AM

My goal & porpose (in depth) is like what mathlab do,,,

read a matris of picture and header & change these to another Algorithm,,

i want do the conversion by my hand,,

any Suggestion??

dugan · 11-02-2013, 03:48 PM

So read the file with libjpeg and save it with libpng? API docs and examples should be be easily available in the tarballs and online.

And if even that's too high level for you, then I'm sure the file format specifications are linked on Wikipedia.

John VV · 11-02-2013, 04:45 PM

have a look at the image library
CImg.h
and a large project built on it
Gmic ( was GRAYCsteration)

the terminal version of Gmic has 100% completely replaced imagemagick for me .

Code:

gmic image.jpg -o image.png
--- or for a 2kx2k 32 bit floating point RAW to a 32 bit tiff image 
gmic -type float image.raw,2048,2048 -o image.tiff