GraLIC - new lossless image compressor

**Alexander Rhatushnyak** · 17th April 2010, 01:23

Demo version of a new lossless image compressor is attached.
It accepts only 8-bit grayscale images in PNM format.
Compresses some images better and faster than MRP, BMF, PAQ8* and others.
The program was compiled with option -march=pentiumpro, I believe it is able to run on almost any modern IBM-compatible PC. On the other hand, it was designed for images with sizes between 2 and 10 Mb, there is no point in testing it on traditional 512x512 or smaller images.

This executable for 32-bit Windows will fail if image width* is bigger than 8184.
*or height, because some images are rotated, and there is no switch to choose other rotation in the demo version.

Please e-mail to Alex at fleetwarecorp kom and bfrusina at rogers kom for more info.

*******************************************
Version 1.2.d was released on 10-Jun-2010:
http://www.imagecompression.info/gralic/Gralic12d.zip
or http://forum.compression.ru/download/file.php?id=15
*******************************************

GraLIC FOR 24-BIT IMAGES: http://encode.ru/threads/1099

// version 1.0.d, which is now obsolete:

**ddfox** · 17th April 2010, 03:10

Thanks！download!test!

**mindi** · 17th April 2010, 10:31

Oh! I works! But you must use "garlic1d.exe c packed_file image.pnm" not "garlic1d.exe c image.pnm"

Very impressive work:

original file (1812x2620px): http://files.uloziste.com/9f93672a34e694f7/big.png

PNM: 4 747 457 bytes
PNG: 1 882 722 bytes
JBG: 1 797 888 bytes
7Z: 1 596 148 bytes
GRALIC: 1 346 379 bytes (4 s)
PAQ8PX: 1 271 445 bytes (143 s)

**m^2** · 17th April 2010, 10:55

Any chance for a version that works with other image types?

**roytam1** · 17th April 2010, 14:02

Originally Posted by mindi

Oh! I works! But you must use "garlic1d.exe c packed_file image.pnm" not "garlic1d.exe c image.pnm"

Very impressive work:

original file (1812x2620px): http://files.uloziste.com/9f93672a34e694f7/big.png

PNM: 4 747 457 bytes
PNG: 1 882 722 bytes
JBG: 1 797 888 bytes
7Z: 1 596 148 bytes
GRALIC: 1 346 379 bytes (4 s)
PAQ8PX: 1 271 445 bytes (143 s)

Code:

OptiPNG 0.6.4: Advanced PNG optimizer.
Copyright (C) 2001-2010 Cosmin Truta.

** Processing: big.png
1812x2620 pixels, 8 bits/pixel, grayscale
Input IDAT size = 1879896 bytes
Input file size = 1882722 bytes

Trying:
  zc = 9  zm = 9  zs = 3  f = 5         IDAT size = 1847717

Selecting parameters:
  zc = 9  zm = 9  zs = 3  f = 5         IDAT size = 1847717

Output IDAT size = 1847717 bytes (32179 bytes decrease)
Output file size = 1847795 bytes (34927 bytes = 1.86% decrease)

     1847795     1768223  95% big.png
     1847795     1768223  95%

***                 DeflOpt V2.07                 ***
***       Built on Wed Sep  5 18:56:30 2007       ***
***  Copyright (C) 2003-2007 by Ben Jos Walbeehm  ***



"C:/Documents and Settings/Roy/Desktop/big.png"
Number of bytes saved: 760 (1,768,223 --> 1,767,463)
File rewritten.


Number of files processed  :        1
Number of files rewritten  :        1
Total number of bytes saved:      760
2,130,422,543 cycles.

**SvenBent** · 17th April 2010, 18:10

my png file i so far only 1782129

and optimizing it not done yet

this puts its smaller than jbg

**Alexander Rhatushnyak** · 18th April 2010, 01:23

Originally Posted by mindi

original file (1812x2620px): http://files.uloziste.com/9f93672a34e694f7/big.png

PNM: 4 747 457 bytes
PNG: 1 882 722 bytes
JBG: 1 797 888 bytes
7Z: 1 596 148 bytes
GRALIC: 1 346 379 bytes (4 s)
PAQ8PX: 1 271 445 bytes (143 s)

GraLIC 1.0.d: 1 346 379 bytes
GraLIC 1.0: 1 274 046 bytes, same speed as 1.0.d, http://artst.narod.ru/lic/big_gralic1.dat - and GraLIC 1.0.d can decompress this file.

**Shelwien** · 18th April 2010, 08:43

Here I compiled some MRP if anybody wants to test it too:
http://nishi.dreamhosters.com/u/mrp-05.rar

Also there's http://www.compression.ru/ds/bmf_2_00.rar

**chornobyl** · 18th April 2010, 20:48

2720x2720
7398417 pgm
4179093 lzma
4060518 delta1-lzma
3875159 pngout
3811284 jpeg2k
3650503 losslesjpeg
3576084 bmf
3420780 bmf -s
3394209 gralic1d
http://www.picfront.org/d/7zd8

**schnaader** · 18th April 2010, 21:57

Originally Posted by chornobyl

2720x2720
[...]
http://i44.tinypic.com/35n4j6q.png

It seems tinypic scaled the picture down to 1600x1600, so unfortunately the link is useless... it also seems that they used a very bad PNG encoder for this, the PNG is 8,4 MB in size, even an uncompressed BMP version takes only 2,5 MB.

EDIT: The picfront link works, thanks

**chornobyl** · 18th April 2010, 22:19

PNG is 8,4 MB in size, even an uncompressed BMP version takes only 2,5 MB.

somehow they use 48 bit color, dunno what for

**Alexander Rhatushnyak** · 21st April 2010, 06:32

Originally Posted by m^2

Any chance for a version that works with other image types?

Hopefully yes.

Originally Posted by Shelwien

Here I compiled some MRP if anybody wants to test it too:
http://nishi.dreamhosters.com/u/mrp-05.rar

Because for many images MRP prints "Image width and height must be multiples of 8!" and exits, I suggest he/she applies the attached program.

It cuts off the required number of pixels from top, bottom, left and right:

c=width&7; cl=c/2, cr=c-cl;
d=height&7; ct=d/2, cb=d-ct;
printf("Width=%d, height=%d\n"
"Cutting off %d and %d from top and bottom, %d and %d from left and right\n",width,height,ct,cb,cl,cr);

**Shelwien** · 22nd April 2010, 10:58

http://groups.google.com/group/comp....eb8c257c?hl=en

**Alexander Rhatushnyak** · 22nd April 2010, 17:22

Originally Posted by chornobyl

2720x2720
7398417 pgm
4179093 lzma
4060518 delta1-lzma
3875159 pngout
3811284 jpeg2k
3650503 losslesjpeg
3576084 bmf
3420780 bmf -s
3394209 gralic1d
http://www.picfront.org/d/7zd8

3561363 glicbawls
3519813 rkim cx
3440951 encMRP05 -o
3436931 paq8px_v68p3 -6
3436181 paq8px_v68p3 -7
encMRP worked three days on my laptop (though sometimes I hit Pause),
the compressed file is here, if you wish: http://artst.narod.ru/lic/P1803650.mrp
and the output log is here: http://artst.narod.ru/lic/log-P1803650-mrp-o.txt (including decMRP)

**Alexander Rhatushnyak** · 1st May 2010, 21:41

Version 1.1.d was released:
http://www.imagecompression.info/gralic/Gralic11d.zip
or http://forum.compression.ru/download/file.php?id=12

Compression and decompression speed has increased by 1% approximately, for example
887 -> 897 kilobytes/second on big_building.pgm,
938 -> 951 kb/sec on big_tree.pgm (compression speed on my laptop).

Compression quality has improved also, for example
3394209 -> 3393385 on the Earth image.

MRP 0.5 compiled with GCC:
http://www.imagecompression.info/gra...c/mrp05gcc.rar
executables for 64-bit Linux:
http://www.imagecompression.info/gra...linux64bit.zip
encmrp.exe and encmrp-Linux64 create compressed files that can be decompressed by decmrp.exe and by decmrp-Linux64,
but for some reason executables from Eugene Shelwien - http://nishi.dreamhosters.com/u/mrp-05.rar - create incompatible compressed files, and can't decompress mrp05gcc-compressed files.

**Alexander Rhatushnyak** · 14th June 2010, 23:23

Version 1.2.d was released on 10-Jun-2010:
http://www.imagecompression.info/gralic/Gralic12d.zip
or http://forum.compression.ru/download/file.php?id=15
Better compression, higher speed, lower memory usage.

btw, a bug/feature in MRP 0.5 was fixed: it prohibited compression of 'too' large images with arithmetic encoding
(also I did some speed optimization) http://www.imagecompression.info/gra...c/mrp05gcc.rar

**chornobyl** · 25th June 2010, 20:09

i cannot run linux version

./GraLIC1d c im.gr im.pnm
bash: ./GraLIC1d: cannot execute binary file

ubuntu10.4 i686

**Madgeniy** · 29th November 2010, 21:27

Where can i download glicbawls compressor for windows?

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