Index of /instruments/software/secchi/utils/hd64

 Name                                Last modified      Size  
 Parent Directory                                         -   
 hd64.ppc                            2007-01-03 14:45   79K  
 hd64.x86_64                         2012-12-04 22:58   49K  
 hdecomp.o                           2007-01-03 14:45   16K  
 nrl_global.c                        2005-03-05 20:47   14K  
 nrl_image_block.o                   2007-01-03 14:45   12K  
 nrl_image_block.c                   2006-12-20 17:03   10K  
 qtree_decode.o                      2006-02-09 15:10  9.5K  
 hinv.o                              2006-02-09 15:10  7.6K  
 qtree_decode.c                      2005-11-08 23:39  7.5K  
 hdecomp.c                           2006-12-20 17:03  7.2K  
 put_data.o                          2006-02-09 15:10  6.1K  
 hinv.c                              2005-03-05 20:47  5.9K  
 decode.o                            2006-02-09 15:10  5.5K  
 hsmooth.o                           2006-02-09 15:10  5.1K  
 getopt.o                            2006-02-09 15:10  4.8K  
 nrl.inc                             2005-04-04 17:52  4.5K  
 hsmooth.c                           2005-03-05 20:47  4.4K  
 decode.c                            2007-07-10 16:02  4.3K  
 make_image.o                        2007-01-03 14:45  4.0K  
 bit_input.o                         2006-02-09 15:10  3.5K  
 qread.o                             2006-02-09 15:10  3.4K  
 qwrite.o                            2006-02-09 15:10  3.4K  
 dodecode.o                          2007-01-03 14:45  3.4K  
 read_image.o                        2006-02-09 15:10  3.2K  
 put_data.c                          2005-03-05 20:47  2.3K  
 dodecode.c                          2006-12-20 17:03  2.0K  
 qread.c                             2005-11-09 22:17  1.8K  
 bit_input.c                         2005-03-05 20:47  1.6K  
 makefile.macosx                     2007-01-04 21:34  1.6K  
 makefile                            2005-11-09 23:11  1.5K  
 makefile.linux                      2007-01-30 20:10  1.5K  
 swap_bytes.o                        2006-02-09 15:10  1.5K  
 log2n.o                             2006-02-09 15:10  1.4K  
 getopt.c                            2005-03-05 20:47  1.4K  
 qwrite.c                            2005-03-05 20:47  1.1K  
 undigitize.o                        2006-02-09 15:10  1.0K  
 make_image.c                        2006-12-20 17:03  851   
 swap_bytes.c                        2007-07-10 16:02  807   
 read_image.c                        2005-03-05 20:47  788   
 getflagarg.c                        2005-03-05 20:47  617   
 log2n.c                             2005-03-05 20:47  563   
 undigitize.c                        2005-03-05 20:47  507   

This is the flight version of hd64 - a program to decompress the 
hcompressed images from LASCO/EIT !

Usage:

hd64 < input_file > output_file

Under the sh shell you can redirect the informational messages to a file

sh -c "hd64 < input_file > output_file 2> err"

Other switches:

-v  verbose messages

-k #  skip a # of bytes


24 Feb 2003 - 64 x 64 pixel block version of hd6464
05 March 2005 - 64 x 64 pixel block version tested with SECCHI FSW

DBI3 image 2048 x 2048 pixels
Compression     Compression  Compression  	Compression
 Type		 Time		Size	   	Factor
Rice			       2655692          3.15
H-compress(HC0=2)     		794536          10.55
H-compress(HC1=4)     		660646          12.70
H-compress(HC2=8)     		526914          15.92
H-compress(HC3=16)     		477862          17.55
H-compress(HC4=32)     		169812          49.40
H-compress(HC5=40)              161334       	52.00
H-compress(HC6=64)	        156436 		53.62
H-compress(HC7=128)	        143634 		58.40

08 Nov 2005 - PRB 00240
Fixed hd64 to scan past lost packets.  Unlike LASCO , SECCHI does not require that the H-compress block headers be at the start of a packet or sub-packet.  So a more sophisicated scanner was needed.