PREFACE
	This image processing package was submitted as a mini project for
M.Tech Communications(Ist year). This was meant to provide some general
purpose functions for image processing so that students who opt for the
subject get some idea about the subject.  Code for most basic applications
of image processing is also provided along with documentation for  the
same so that it can be readily used for image processing applications. A
small utility package using these functions is also provided so that  one
could get a feel of the results obtained by the various algorithms. 
	A separate demonstration package using a graphical user interface
is provided which displays precomputed results of images. This will give
an idea of how the results are in image  processing. This was developed
using TCL/TK toolkit for X-Windows programming.
	This manual, though meant originally for providing function
reference for programmers also provides a tutorial for the beginners in
the first few chapters. In the later chapters, it is assumed that the
reader has become well versed with the functionality and so only the
function reference is provided. In case of any difficulty in usage, the
application package's source code in file "ip_demo.c" may be consulted to
find a sample usage of the functions.
	Chapter 1 gives the basic image representation for gray scale
images and develops a  program for reading and writing gray scale images
step by step. It finally demonstrates the use of a function that
simplifies file reading and writing enormously.
	Chapter 2 is a tutorial on DFT and FFT and includes the function
reference for other transforms. 
	Chapter 3 onwards basically are meant for function reference.
However, tutorials and sample programs are included whereever necessary. 
	The appendex give the source listing of all the programs mentioned
in the text.