RequiredParameters(exceptwith-h):
-i : source file (-i source.bin or source*.pgx)
-m : source characteristics file (-m imgfile.img)
-o : destination file (-o dest.jp3d)
OptionalParameters:-h : display the help information
-n : number of resolutions (-n 3,3,3)
-I : use the irreversible transforms: ICT + DWT 9-7 (-I)
-C : coding algorithm (-C 2EB) [2EB, 3EB]
-r : different compression ratios for successive layers (-r 20,10,5)
The rate specified for each quality level is the desired compression factor, rate 1 means lossless
compression (options -r and -q cannot be used together).
-q : different psnr for successive layers (-q 30,40,50)
(options -r and -q cannot be used together)
-b : size of code block (-b 32,32,32)
-c : size of precinct (-c 128,128,128)
-t : size of tile (-t 512,512,512)
-p : progression order (-p LRCP) [LRCP, RLCP, RPCL, PCRL, CPRL]
-s : subsampling factor (-s 2,2,2) [-s X,Y,Z]
Note: subsampling bigger than 2 can produce error.
-SOP : write SOP marker before each packet
-EPH : write EPH marker after each header packet
-M : code-block style (-M 0)
[1=BYPASS(LAZY) 2=RESET 4=RESTART(TERMALL) 8=VSC 16=PTERM 32=SEGSYM 64=3DCTXT]
Indicate multiple modes by adding their values, for example: RESTART(4) + RESET(2) + SEGMARK(32) =
-M 38
-D : define DC offset (-D 12)
-x : create an index file *.Idx (-x index_name.Idx)
-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)
-d : offset of the origin of the volume (-d 150,300,100)
-l : offset of the origin of the tiles (-l 100,75,25)
Defaultcoding:
- Lossless
- 1 tile
- Size of precinct : 2^15 x 2^15 x 2^15 (means 1 precinct)
- Size of code-block : 64 x 64 x 64
- Number of resolutions in x, y and z axis: 3
- No SOP marker in the codestream
- No EPH marker in the codestream
- No sub-sampling in x, y or z direction
- No mode switch activated
- Progression order: LRCP
- No index file
- No ROI upshifted
- No offset of the origin of the volume
- No offset of the origin of the tiles
- Reversible DWT 5-3 on each 2D slice
- Coding algorithm: 2D-EBCOT
Remarks:
The markers written to the main_header are : SOC SIZ COD QCD COM.
COD and QCD markers will never appear in the tile_header.
You need enough disk space memory (twice the original) to encode the volume, i.e. for a 1.5 GB volume you
need a minimum of 3GB of disk memory)
When loading *.pgx files, a relative path to directory is needed for input argument followed by the
common prefix of the slices and a '*' character representing sequential numeration ( -i
relativepath/slices*.pgx ).
The index file has the structure below:
Image_height Image_width Image_depth
Progression order: 0 (LRCP)
Tiles_size_X Tiles_size_Y Tiles_size_Z
Components_nb
Layers_nb
Decomposition_levels
[Precincts_size_X_res_Nr Precincts_size_Y_res_Nr Precincts_size_Z_res_Nr]
...
[Precincts_size_X_res_0 Precincts_size_Y_res_0 Precincts_size_Z_res_0]
Main_header_end_position
Codestream_size
Tile_0 [start_pos end_header end_pos TotalDisto NumPix MaxMSE] ...
Tile_Nt [ '' '' '' '' '' '' ]
Tpacket_0 [Tile layer res. comp. prec. start_pos end_pos disto] ...
Tpacket_Np ['' '' '' '' '' '' '' '' ]
MaxDisto
TotalDisto