Site: nic.funet.fi
Directory: /pub/graphics/misc/test-images


	C o n t e n t s   o f   t h e   d i r e c t o r y

File:	  Size:	  Content:			Type:	Format:	Resolution:   
-----	  ------  --------			-----	-------	------------ 
ccitt1	   30983  CCITT standard image 1	bin	pbm	 1728x2376x1
ccitt2	   27781  CCITT standard image 2	bin	pbm	 1728x2376x1
ccitt3	   47725  CCITT standard image 3	bin	pbm	 1728x2376x1
ccitt4	  103020  CCITT standard image 4	bin	pbm	 1728x2376x1
ccitt5	   56469  CCITT standard image 5	bin	pbm	 1728x2376x1
ccitt6	   31868  CCITT standard image 6	bin	pbm	 1728x2376x1
ccitt7	  114707  CCITT standard image 7	bin	pbm	 1728x2376x1
ccitt8	   44086  CCITT standard image 8	bin	pbm	 1728x2376x1
test1	   21962  Test image 1			bin	pbm	 1240x1754x1
test2	   39343  Test image 2			bin	pbm	 1275x1745x1
test3	   27119  Test image 3			bin	pbm	 1275x1745x1
test4	   58726  Test image 4			bin	pbm	 1275x1745x1
hand	   49229  Test image "black hand"	bin	pbm	 1275x1745x1
airplane  262944  Jet over Mountain		gs	ras	 512x512x8    
baboon	  262944  Face of a baboon		gs	ras	 512x512x8
boats	  415520  Boats at ground		gs	ras	 720x576x8
bridge 	   66336  Stream bridge 		gs	ras	 256x256x8
camera	   66336  Man with a camera		gs	ras	 256x256x8
couple	   66336  A couple in livingroom	gs	ras	 256x256x8
goldhill  415520  Idyllic village 		gs	ras	 720x576x8
lena	  262944  Very famous girl		gs	ras	 512x512x8
peppers   262944  Peppers at table 		gs	ras	 512x512x8


	A s c i i   d a t a   o f   t e s t   r e s u l t s  

File:	  	  Method:	Image: 	 	Software:  
-----	  	  --------	------		---------
BTC.result	  BTC		Lena 		Look into the file!
JPEG.result	  JPEG v.4	Lena		JPEG4386.ZIP (PC)
WAVELET.result	  WAVELET	Lena		Look into the file!
WFA.result	  WFA (fractal)	Lena		Look into the file!


		S o u r c e   c o d e s

File:		  Method:	Language:	Notifications:
-----		  -------	---------	--------------
jbig.tar.gz	  JBIG		C-language	compressed by gzip
jpegsrc4	  JPEG		C-language	/pub/msdos/graphics/graphics


ABBREVIATIONS:

	bin .... Binary image
	gs ..... Gray scale image
	pbm .... Portable Bit Map
	ras .... Sun raster file
	gz ..... Compressed by gnuzip (to uncompress use gunzip) 


NOTIFICATIONS:

Lena is actually a green component of the original RGB colour image Lena. 
There exists also other versions, e.g. the one which is the luminance (Y) 
component of the YUV colour space. Some books and papers use the Y-component 
while others use the G-component; you can never know for sure. We have used 
the G-component version in our papers.

CCITT binary images are in PBM-format, but compressed by GZIP.

The test images 1 to 4, and the test image "black hand" are the ones 
that are used in references 1-2.


REFERENCES:

1.	P. Franti and O. Nevalainen:
	"A Two-stage Modelling Method for Compressing Binary Images 
	by Arithmetic Coding"
	The Computer Journal
	Vol.36, no.7, 1993.

2.	P. Franti:
	"A Fast and Efficient Compression Method for Binary Images"
	Signal Processing: Image Communication
	Vol.6, no.1, March 1994.

The post script version of these papers are also available 
via anonymous-ftp:

Site: cs.utu.fi
Directory: /pub/techreports

  or

http://www.utu.fi/tdk/ml/tko/reports