************************
MBK-- the contents of the directory are all duplicated in
the ".tar" file, and it's easier to get it that way.  The tar file
is not run through compress because it gets larger.
*************************

Hello,
This directory contains all kinds of stuff related to my fractal
image compression work. Below is a list of what is what: 


file			what it is
-----------------------------------------------------
README			the file you are reading now.

a_paper.ps.Z	a paper, which appeared in several variants
				in several places, including FRACTALS and CHAOS,
				Peitgen, Saupe, Jurgens, Springer Verlag, New York 1992; 
				and SIGGRAPH '92 course notes. It is at a very lay 
				level, with almost no math at all. It references
				other papers which are more mathematical. Note the 
				file size before you ftp this one (see below).

a_p_nofigs.ps.Z	the same paper as above, with no figures or images. This
				makes it much smaller for ftp-ing.

****
****  Note copies of these papers have been moved out of the tar file
****  into the main directory for those people who want them, and not
****  all the programs.
****


decode			a sun sparc executable decoding program which takes 
				as input the *.trn files. This program outputs sunraster
			 	format images if you call it with the -O flag. 
 				An interesting feature of the algorithm can
				be demonstrated by decoding with the -s flag; 
				e.g. decode lena.trn -O -s512x512 will decode the image
				into an image 4 times as large as the original.
				Since the images are encoded as fractals, detail is 
				created at all scales when the images are decoded. 
				(See the file decode.help)

decode.exe		PC executable of the decoding program. Decoding at larger
				image sizes is not possible (yet) on PC's. Also, if you 
				wish to display the image, you need VGA graphics. 

decode.help  	a text file discussing flags for the decode program.

*.trn			compressed image files. Many of these, like london, san
				and shuttle were very poor originals - I just found it
				difficult to find quality images on the network that weren't
				barely clad women; and even so there are many women
				among the images. 

lena.ras		the original 256x256 image of Lena in sunraster format. It 
				is here for comparison purposes.


Because the algorithms are changing almost daily, I update them 
rarely. If you want to be notified of updates and other stuff that 
comes up, write me e-mail at yfisher@ucsd.edu and I will put you on 
my update mailing list. 

Finally, I haven't put on the compression program which is not really 
ready, to my taste. However, if you wish to have me encode an image
for you, write me.

Please send any and all comments to yfisher@ucsd.edu and thanks
for your interest. 

---------------------------------------------------------------------
Yuval Fisher                                 e-mail: yfisher@ucsd.edu
INLS 0402
University of California, San Diego
La Jolla, CA 92093
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