Diff for "FsTutorial/MghFormat"

Differences between revisions 1 and 13 (spanning 12 versions)

[wiki:FreeSurferWiki top] | [wiki:FileFormats previous]

The MGH/MGZ Volume Format

WORK IN PROGRESS

The .mgh file format is used to store high-resolution structural data and other data which are to be overlaid on the high-resolution structural volume. A .mgz file is a .mgh file that has been compressed with ZLib.

The MGH format is proprietary, defined by the NMR Center (at Massachusetts General Hospital). Short of having a formal specification of this format, the next best thing is a snapshot of the C code showing how a .mgh or .mgz file is read and written:

attachment:mri.h - a .mgh file merely stores the MRI data structure, defined in mri.h
attachment:matrix.h - MRI data structure contains MATRIX
attachment:mriio.c - see 'MRIreadHeader', 'mri_read', and 'mri_write' routines
attachment:mri.c - contains helper routines used in mriio.c
attachment:mri_info.c - see 'do_file' routine
attachment:mri_convert.c - big example of reading and writing .mgh and .mgz file

-  ⇤ ← Revision 1 as of 2006-01-16 21:57:54 → 
  Size: 392
  Editor: NickSchmansky
  Comment:
+   ← Revision 13 as of 2006-01-17 18:50:12 → ⇥
  Size: 1056
  Editor: NickSchmansky
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 7:
-The .mgh file format is used to store high-resolution structural data and other data which are to be overlaid on the high-resolution structural volume.  An .mgz file is a .mgh file that has been compressed with ZLib.
+The .mgh file format is used to store high-resolution structural data and other data which are to be overlaid on the high-resolution structural volume.  A .mgz file is a .mgh file that has been compressed with ZLib.
 Line 9:
+The MGH format is proprietary, defined by the NMR Center (at Massachusetts General Hospital).  Short of having a formal specification of this format, the next best thing is a snapshot of the C code showing how a .mgh or .mgz file is read and written:
-Line 10:
+Line 11:
-attachment:mri.h
+ * attachment:mri.h - a .mgh file merely stores the '''MRI''' data structure, defined in mri.h
-Line 12:
+Line 13:
-attachment:mriio.c
+ * attachment:matrix.h - MRI data structure contains MATRIX

 * attachment:mriio.c - see 'MRIreadHeader', 'mri_read', and 'mri_write' routines

 * attachment:mri.c - contains helper routines used in mriio.c

 * attachment:mri_info.c - see 'do_file' routine

 * attachment:mri_convert.c - big example of reading and writing .mgh and .mgz file