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-List of parameters for the coder JPEG 2000 :
-
-Date : June the 25th, 2003
-Author : Yannick Verschueren
-Contact : verschueren@tele.ucl.ac.be
-
-- the option -help displays the readme.txt file on screen
-
-- The markers COD and QCD are writed both of two in the main_header and never appear in the tile_header. The markers in the main header are : SOC SIZ COD QCD COM.
-
-- This coder can encode mega image, a test was made on a 24000x24000 pixels color image. You need enough disk space memory (twice the original) to encode the image. (i.e. for a 1.5 Gb image you need a minimum of 3Gb of disk memory)
-
-REMARKS :
----------
-
-* the value of rate enter in the code line is the compression factor !
-exemple :
-
--r 20,10,1 means quality 1 : compress 20x, quality 2 : compress 10x and quality 3 : compress 1x = lossless
-
-* The number of resolution can be modified by the program in view to respect profile-0 conditions (Taubman, Marcelin (2002), "JPEG2000, image compression fundamentals, standards and practice", p700)
-
-By default :
-------------
-
- * lossless
- * 1 tile
- * size of precinct 2^15 x 2^15 (means 1 precinct)
- * size of code-block 64 x 64
- * Number of resolution : 6
- * No SOP marker in the codestream
- * No EPH marker in the codestream
- * No sub-sampling in x and y direction
- * No mode switch activated
- * progression order : LRCP
- * No index file
- * No ROI upshifted
- * No offset of the origin of the image
- * No offset of the origin of the tiles
- * Reversible DWT 5-3
-
-Parameters :
-------------
-
--i : source file (-i source.pnm also *.pgm, *.ppm) "required"
-
--o : destination file (-o dest.j2k) "required"
-
--r : different rates (-r 20,10,5) "optional"
-
--n : Number of resolution (-n 3) "optional"
-
--b : size of code block (-b 32,32) "optional"
-
--c : size of precinct (-c 128,128) "optional"
-
--t : size of tile (-t 512,512) "optional"
-
--p : progression order (-p LRCP) [LRCP, RLCP, RPCL, PCRL, CPRL] "optional"
-
--s : subsampling factor (-s 2,2) [-s X,Y] "optional"
-
--SOP : write SOP marker before each packet "optional"
-
--EPH : write EPH marker after each header packet "optional"
-
--M : mode switch (-M 3) [1= BYPASS(LAZY) 2=RESET 4=RESTART(TERMALL) 8=VSC 16=ERTERM(SEGTERM) 32=SEGMARK(SEGSYM)] "optional"
- for several mode switch you have to add the value of each mode you want
- ex : RESTART(4) + RESET(2) + SEGMARK(32) = -M 38
-
--x : Create an index file *.Idx (-x index_name.Idx) "optional"
-
--ROI:c=%d,U=%d : quantization indices upshifted for component c=%d [%d = 0,1,2]
- with a value of U=%d [0 <= %d <= 37] (i.e. -ROI:c=0,U=25) "optional"
-
--d : offset of the origin of the image (-d 150,300) "optional"
-
--T : offset of the origin of the tiles (-T 100,75) "optional"
-
--I : Use the irreversible DWT 9-7 (-I) "optional"
-
-IMPORTANT :
------------
-
-* subsampling bigger than 2 can produce error
-
-The index file respect the structure below :
----------------------------------------------
-
-Image_height Image_width
-progression order
-Tiles_size_X Tiles_size_Y
-Components_nb
-Layers_nb
-decomposition_levels
-Precincts_size_X Precincts_size_Y
-Main_header_end_position
-Codestream_size
-Tile0 start_pos end_Theader end_pos
-Tile1 " " "
-...
-TileN " " "
-Tpacket_0 Tile layer res. comp. prec. start_pos end_pos
-...
-Tpacket_M " " " " " " "