char * SUMA_BrainVoyager_Read_vmr(char *fnameorig, THD_3dim_dataset *dset, int LoadData,
byte Qxforce, byte bsforce, int viewforce, char *outname)
{
static char FuncName[]={"SUMA_BrainVoyager_Read_vmr"};
int i = 0, nf, iop, dchunk, End, bs, doff, ex,
data_type=SUMA_notypeset, view, endian, dblock;
THD_ivec3 iv3;
unsigned long len;
short qxver;
short nvox[3]; /* values are unsigned, so check for sign for bs... */
THD_mat33 m33;
THD_ivec3 orixyz , nxyz ;
THD_fvec3 dxyz , orgxyz ;
float ep[3], sp[3];
char sview[10], *fname = NULL, *scom=NULL, form[10], swp[10], orstr[10], xfov[100], yfov[100], zfov[100], *prefix = NULL, *dsetheadname = NULL;
FILE *fid = NULL;
SUMA_Boolean LocalHead = NOPE;
SUMA_ENTRY;
if (!dset || !fnameorig) {
SUMA_SL_Err("NULL fname || NULL dset!");
SUMA_RETURN(NOPE);
}
if (!SUMA_isExtension(fnameorig, ".vmr")) {
SUMA_SL_Err("vmr dset is expected to have .vmr for an extension");
SUMA_RETURN(NOPE);
}
if (!SUMA_filexists(fnameorig)) {
SUMA_SL_Err("file does not exist");
SUMA_RETURN(NOPE);
}
/* make fname be the new name without the extension*/
if (!outname) {
fname = SUMA_Extension(fnameorig,".vmr", YUP);
} else {
fname = SUMA_Extension(outname, ".vmr", YUP);
}
prefix = SUMA_AfniPrefix(fname, NULL, NULL, NULL);
if( !THD_filename_ok(prefix) ) {
SUMA_SL_Err("Bad prefix");
goto CLEAN_EXIT;
}
/* someday, guess format on your own...*/
qxver = 0;
if (Qxforce) {
SUMA_LH("Forcing qxver");
qxver = 1; /* set to 1 if qx format */
}
/* view ? */
SUMA_LHv("Viewforce = %d; [%d %d]\n", viewforce, VIEW_ORIGINAL_TYPE, VIEW_TALAIRACH_TYPE);
if (viewforce >= VIEW_ORIGINAL_TYPE && viewforce <= VIEW_TALAIRACH_TYPE) {
view = viewforce;
} else {
view = VIEW_ORIGINAL_TYPE;
if (SUMA_iswordin_ci(fnameorig, "_tal") == 1) { view = VIEW_TALAIRACH_TYPE; }
else if (SUMA_iswordin_ci(fnameorig, "_acpc") == 1) { view = VIEW_ACPCALIGNED_TYPE; }
else { view = VIEW_ORIGINAL_TYPE; }
}
switch (view) {
case VIEW_ORIGINAL_TYPE:
sprintf(sview,"+orig"); break;
case VIEW_ACPCALIGNED_TYPE:
sprintf(sview,"+acpc"); break;
case VIEW_TALAIRACH_TYPE:
sprintf(sview,"+tlrc"); break;
default:
SUMA_SL_Err("Bad view");
goto CLEAN_EXIT;
}
if (LocalHead) fprintf(SUMA_STDERR,"%s: View %s, %d\n", FuncName, sview, view);
dsetheadname = SUMA_append_replace_string(prefix,".HEAD", sview, 0);
if (SUMA_filexists(dsetheadname)) {
SUMA_S_Errv("Bad prefix, output dset %s exists\n", dsetheadname);
goto CLEAN_EXIT;
}
SUMA_free(dsetheadname); dsetheadname = NULL;
fid = fopen(fnameorig,"r");
if (!fid) {
SUMA_SL_Err("Could not open file for reading");
goto CLEAN_EXIT;
}
if (qxver) {
SUMA_LH("Reading dimensions, 2+ 1st 6 bytes and deciding on swap");
doff = 4*sizeof(short);/* data offset 2 + 6 bytes */
} else {
SUMA_LH("Reading dimensions, 1st 6 bytes and deciding on swap");
doff = 3*sizeof(short);/* data offset */
}
SUMA_WHAT_ENDIAN(endian);
bs = 0;
swp[0] = '\0';
data_type = SUMA_byte; /* voxel data is bytes */
dchunk = sizeof(byte); /* voxel data is bytes */
sprintf(form,"3Db");
if (qxver) { SUMA_READ_NUM(&(qxver), fid, ex, sizeof(short)); if (LocalHead) fprintf(SUMA_STDERR,"%s: QXver = %d\n", FuncName, qxver);}/* is this a QX format?*/
SUMA_READ_NUM(&(nvox[2]), fid, ex, sizeof(short)); /* Z first */
SUMA_READ_NUM(&(nvox[1]), fid, ex, sizeof(short));
SUMA_READ_NUM(&(nvox[0]), fid, ex, sizeof(short));
if ((nvox[0] < 0 || nvox[1] < 0 || nvox[2] < 0 )) {
SUMA_LH("Byte swapping needed");
bs = 1;
}
if (bsforce) {
SUMA_LH("Byte swapping forced");
bs = 1;
}
if (bs) {
if (qxver) SUMA_swap_2(&(qxver));
SUMA_swap_2(&(nvox[0]));
SUMA_swap_2(&(nvox[1]));
SUMA_swap_2(&(nvox[2]));
sprintf(swp,"-2swap");
SUMA_OTHER_ENDIAN(endian);
}
/* 1 1 1???? */
if (nvox[0] == nvox[1] && nvox[1] == nvox[2] && nvox[2] == 1) {
if (LocalHead) { fprintf(SUMA_STDERR,"Warning %s: Voxel nums all 1. Trying from file size\n", FuncName); }
len = THD_filesize( fnameorig ) ;
len -= doff;
len /= dchunk;
nvox[0] = (int)pow((double)len, 1.0/3.0);
if (nvox[0] * nvox[0] * nvox[0] != len) {
fprintf(SUMA_STDERR,"Error %s: Bad voxel numbers and could not infer number from filesize.\n"
"Size of file: %lld, data offset: %d, datum size: %d, data number: %ld\n"
"Inferred nvox:%d\n",
FuncName,
THD_filesize( fnameorig ), doff, dchunk, len,
nvox[0]);
goto CLEAN_EXIT;
}
nvox[2] = nvox[1] = nvox[0];
if (LocalHead) { fprintf(SUMA_STDERR,"Warning %s: Using filesize inferred number of voxels: %d %d %d\n",
FuncName, nvox[0], nvox[1], nvox[2]); }
}
if (LocalHead) fprintf(SUMA_STDERR,"Number of voxels: %d %d %d. qxver %d\n", nvox[0], nvox[1], nvox[2], qxver);
/* check against filesize */
len = THD_filesize( fnameorig ) ;
dblock = nvox[0]*nvox[1]*nvox[2]*dchunk;
if (len != (dblock + doff)) {
if (!qxver) {
fprintf(SUMA_STDERR, "Mismatch between file size %ld\n"
"and expected size %d = (%d*%d*%d*%d+%d) \n",
len, (dblock + doff), nvox[0], nvox[1], nvox[2], dchunk, doff);
goto CLEAN_EXIT;
}else if (len < dblock + doff) {
fprintf(SUMA_STDERR, "Mismatch between file size %ld\n"
"and minimum expected size %d = (%d*%d*%d*%d+%d) \n",
len, (dblock + doff), nvox[0], nvox[1], nvox[2], dchunk, doff);
goto CLEAN_EXIT;
}else {
SUMA_LH("Proceeding");
}
}
if (LocalHead) fprintf(SUMA_STDERR,"File size passes test\n");
/* orientation */
orixyz.ijk[0] = ORI_A2P_TYPE;
orixyz.ijk[1] = ORI_S2I_TYPE;
orixyz.ijk[2] = ORI_R2L_TYPE;
/* load number of voxels */
LOAD_IVEC3( nxyz , nvox[0] , nvox[1] , nvox[2] ) ;
/* form the command */
SUMA_LH("Forming command");
{
float delta[3]={1.0, 1.0, 1.0};
float origin[3]={0.0, 0.0, 0.0};
/* set origin of 0th voxel*/
origin[0] = (float)((nvox[0]*delta[0]))/2.0; /* ZSS: Changed from 0 0 0 Nov 1 07 */
origin[1] = (float)((nvox[1]*delta[1]))/2.0;
origin[2] = (float)((nvox[2]*delta[2]))/2.0;
/* dimensions, same for vmr*/
LOAD_FVEC3( dxyz , delta[0], delta[1], delta[2] ) ;
SUMA_sizeto3d_2_deltaHEAD(orixyz, &dxyz);
/* origin */
LOAD_FVEC3( orgxyz , origin[0], origin[1], origin[2] ) ;
SUMA_originto3d_2_originHEAD(orixyz, &orgxyz);
}
/* start point (edge of origin voxel) and end point (opposite to start ) */
sp[0] = orgxyz.xyz[0] + SUMA_ABS(dxyz.xyz[0]) / 2.0;
sp[1] = orgxyz.xyz[1] + SUMA_ABS(dxyz.xyz[1]) / 2.0;
sp[2] = orgxyz.xyz[2] + SUMA_ABS(dxyz.xyz[2]) / 2.0;
ep[0] = orgxyz.xyz[0] + (nxyz.ijk[0] - 0.5) * SUMA_ABS(dxyz.xyz[0]);
ep[1] = orgxyz.xyz[1] + (nxyz.ijk[1] - 0.5) * SUMA_ABS(dxyz.xyz[1]);
ep[2] = orgxyz.xyz[2] + (nxyz.ijk[2] - 0.5) * SUMA_ABS(dxyz.xyz[2]);
SUMA_orcode_to_orstring (orixyz.ijk[0], orixyz.ijk[1], orixyz.ijk[2], orstr);
sprintf(xfov," -xFOV %.2f%c-%.2f%c", sp[0], orstr[0], ep[0], orstr[3]);
sprintf(yfov," -yFOV %.2f%c-%.2f%c", sp[1], orstr[1], ep[1], orstr[4]);
sprintf(zfov," -zFOV %.2f%c-%.2f%c", sp[2], orstr[2], ep[2], orstr[5]);
scom = (char *)SUMA_calloc((strlen(fnameorig)+500), sizeof(char));
sprintf(scom,"to3d %s %s %s %s -prefix %s %s:%d:0:%d:%d:%d:%s ",
swp, xfov, yfov, zfov, prefix, form, doff,
nvox[0], nvox[1], nvox[0], fnameorig);
SUMA_LH("HERE");
if (dset) { /* form the dset header */
int nvals_read = 0;
SUMA_LH("Filling header");
EDIT_dset_items( dset ,
ADN_prefix , prefix ,
ADN_datum_all , data_type ,
ADN_nxyz , nxyz ,
ADN_xyzdel , dxyz ,
ADN_xyzorg , orgxyz ,
ADN_xyzorient , orixyz ,
ADN_malloc_type , DATABLOCK_MEM_MALLOC ,
ADN_view_type , view ,
ADN_type , HEAD_ANAT_TYPE ,
ADN_func_type , ANAT_BUCK_TYPE ,
ADN_none ) ;
if (LoadData) {
void *vec=NULL;
SUMA_LH("Loading data");
if (!(vec = SUMA_BinarySuck(fnameorig, data_type, endian, 3*sizeof(short), -1, &nvals_read))) {
SUMA_SL_Err("Failed to read data file"); goto CLEAN_EXIT;
}
if (qxver) {
if (nvals_read < nvox[0]*nvox[1]*nvox[2]) {
SUMA_SL_Warn("Failed to read expected number of voxels\n proceeding...");
}
} else {
if (nvals_read != nvox[0]*nvox[1]*nvox[2]) {
SUMA_SL_Warn("Failed to read the appropriate number of voxels\n proceeding...");
}
}
EDIT_substitute_brick( dset , 0 , data_type , vec) ;
if (LocalHead) fprintf(SUMA_STDERR,"%s: Read %d values from file.\n", FuncName, nvals_read);
/* DSET_write(dset) ; */
}
}
CLEAN_EXIT:
if (prefix) SUMA_free(prefix); prefix = NULL;
if (fname) SUMA_free(fname); fname = NULL;
if (fid) fclose(fid); fid = NULL;
SUMA_RETURN(scom);
}
int main( int argc , char *argv[] )
{
MRI_IMAGE *imin, *imout , *imout_orig;
THD_3dim_dataset *iset, *oset , *ooset;
char *prefix = "SpatNorm", *bottom_cuts = NULL;
int iarg , verb=0, OrigSpace = 0 , specie = HUMAN;
float SpatNormDxyz= 0.0, iset_scaled=1.0;
THD_ivec3 orixyz , nxyz ;
THD_fvec3 dxyz , orgxyz, originRAIfv, fv2;
mainENTRY("3dSpatNorm main") ; machdep() ;
if (argc == 1) { usage_3dSpatNorm(1); exit(0); }
/*--- options ---*/
iarg = 1 ;
OrigSpace = 0;
while( iarg < argc && argv[iarg][0] == '-' ){
if (strcmp(argv[iarg],"-h") == 0 || strcmp(argv[iarg],"-help") == 0 ) {
usage_3dSpatNorm(strlen(argv[iarg]) > 3 ? 2:1);
exit(0);
}
/* -prefix */
if( strcmp(argv[iarg],"-prefix") == 0 ){
if( ++iarg >= argc ){
fprintf(stderr,"**ERROR: -prefix requires another argument!\n") ;
exit(1) ;
}
prefix = strdup(argv[iarg]) ;
if( !THD_filename_ok(prefix) ){
fprintf(stderr,"**ERROR: -prefix value contains forbidden characters!\n") ;
exit(1) ;
}
iarg++ ; continue ;
}
if( strcmp(argv[iarg],"-dxyz") == 0 ){
if( ++iarg >= argc ){
fprintf(stderr,"**ERROR: -dxyz requires another argument!\n") ;
exit(1) ;
}
SpatNormDxyz = atof(argv[iarg]) ;
iarg++ ; continue ;
}
if( strcmp(argv[iarg],"-bottom_cuts") == 0 ){
if( ++iarg >= argc ){
fprintf(stderr,"**ERROR: -bottom_cuts requires another argument!\n") ;
exit(1) ;
}
bottom_cuts = argv[iarg] ;
iarg++ ; continue ;
}
if( strncmp(argv[iarg],"-verb",5) == 0 ){
verb++ ; iarg++ ; continue ;
}
if( strncmp(argv[iarg],"-human",5) == 0 ){
specie = HUMAN ; iarg++ ; continue ;
}
if( strncmp(argv[iarg],"-monkey",5) == 0 ){
specie = MONKEY ; iarg++ ; continue ;
}
if( strncmp(argv[iarg],"-marmoset",5) == 0 ){
specie = MARMOSET ; iarg++ ; continue ;
}
if( strncmp(argv[iarg],"-rat",5) == 0 ){
specie = RAT ; iarg++ ; continue ;
}
if( strncmp(argv[iarg],"-orig_space",10) == 0 ){
OrigSpace = 1 ; iarg++ ; continue ;
}
fprintf(stderr,"**ERROR: %s is unknown option!\n",argv[iarg]) ;
suggest_best_prog_option(argv[0], argv[iarg]);
exit(1) ;
}
if( iarg >= argc ){
fprintf(stderr,"**ERROR: no input dataset name on command line?!\n") ;
exit(1) ;
}
/*--- read dataset ---*/
iset = THD_open_dataset( argv[iarg] ) ;
if( !ISVALID_DSET(iset) ){
fprintf(stderr,"**ERROR: can't open dataset %s\n",argv[iarg]) ;
exit(1) ;
}
/*--- get median brick --*/
if( verb ) fprintf(stderr,"++3dSpatNorm: loading dataset\n") ;
if (specie == MARMOSET) {
iset_scaled = 2.5;
THD_volDXYZscale(iset->daxes, iset_scaled, 0);
specie = MONKEY;
}
imin = THD_median_brick( iset ) ;
if( imin == NULL ){
fprintf(stderr,"**ERROR: can't load dataset %s\n",argv[iarg]) ;
exit(1) ;
}
imin->dx = fabs(iset->daxes->xxdel) ;
imin->dy = fabs(iset->daxes->yydel) ;
imin->dz = fabs(iset->daxes->zzdel) ;
mri_speciebusiness(specie);
mri_brain_normalize_cuts(bottom_cuts);
if (SpatNormDxyz) {
if (verb) fprintf(stderr,"Overriding default resampling\n");
mri_brainormalize_initialize(SpatNormDxyz, SpatNormDxyz, SpatNormDxyz);
} else {
float xxdel, yydel, zzdel, minres;
if (specie == MONKEY) minres = 0.5;
else if (specie == MARMOSET) minres = 0.2;
else if (specie == RAT) minres = 0.1;
else minres = 0.5;
/* don't allow for too low a resolution, please */
if (imin->dx < minres) xxdel = minres;
else xxdel = imin->dx;
if (imin->dy < minres) yydel = minres;
else yydel = imin->dy;
if (imin->dz < minres) zzdel = minres;
else zzdel = imin->dz;
if (verb) {
fprintf(stderr,
"%s:\n"
" Original resolution %f, %f, %f\n"
" SpatNorm resolution %f, %f, %f\n",
"3dSpatnorm", imin->dx, imin->dy, imin->dz,
xxdel, yydel, zzdel);
}
mri_brainormalize_initialize(xxdel, yydel, zzdel);
}
/* To get around the #define for voxel counts and dimensions */
mri_brainormalize_initialize(imin->dz, imin->dy, imin->dz);
/* me needs the origin of this dset in RAI world */
LOAD_FVEC3( originRAIfv ,
iset->daxes->xxorg , iset->daxes->yyorg , iset->daxes->zzorg) ;
originRAIfv = THD_3dmm_to_dicomm( iset , originRAIfv ) ;
LOAD_FVEC3(fv2, iset->daxes->xxorg + (iset->daxes->nxx-1)*iset->daxes->xxdel ,
iset->daxes->yyorg + (iset->daxes->nyy-1)*iset->daxes->yydel ,
iset->daxes->zzorg + (iset->daxes->nzz-1)*iset->daxes->zzdel);
fv2 = THD_3dmm_to_dicomm( iset , fv2 ) ;
if( originRAIfv.xyz[0] > fv2.xyz[0] ) {
float tf; tf = originRAIfv.xyz[0];
originRAIfv.xyz[0] = fv2.xyz[0]; fv2.xyz[0] = tf; }
if( originRAIfv.xyz[1] > fv2.xyz[1] ) {
float tf; tf = originRAIfv.xyz[1];
originRAIfv.xyz[1] = fv2.xyz[1]; fv2.xyz[1] = tf; }
if( originRAIfv.xyz[2] > fv2.xyz[2] ) {
float tf; tf = originRAIfv.xyz[2];
originRAIfv.xyz[2] = fv2.xyz[2]; fv2.xyz[2] = tf; }
if (verb) {
fprintf(stderr,"++3dSpatNorm (ZSS): RAI origin info: %f %f %f\n",
originRAIfv.xyz[0], originRAIfv.xyz[1], originRAIfv.xyz[2]);
}
DSET_unload( iset ) ; /* don't need this data no more */
/*-- convert image to shorts, if appropriate --*/
if( DSET_BRICK_TYPE(iset,0) == MRI_short ||
DSET_BRICK_TYPE(iset,0) == MRI_byte ){
imout = mri_to_short(0.0,imin) ; /* ZSS Oct 2012: Let function set scaling*/
mri_free(imin) ; imin = imout ;
}
/*--- normalize image spatially ---*/
mri_brainormalize_verbose( verb ) ;
if (OrigSpace) {
imout = mri_brainormalize( imin , iset->daxes->xxorient,
iset->daxes->yyorient,
iset->daxes->zzorient , &imout_orig, NULL) ;
} else {
imout = mri_brainormalize( imin , iset->daxes->xxorient,
iset->daxes->yyorient,
iset->daxes->zzorient , NULL, NULL) ;
}
mri_free( imin ) ;
if( imout == NULL ){
fprintf(stderr,"**ERROR: normalization fails!?\n"); exit(1);
}
if (OrigSpace) {
if( verb ) fprintf(stderr,"++3dSpatNorm: Output in Orignal space\n") ;
mri_free( imout ) ;
imout = imout_orig;
imout->xo = originRAIfv.xyz[0];
imout->yo = originRAIfv.xyz[1];
imout->zo = originRAIfv.xyz[2];
imout_orig = NULL;
} else {
if( verb ) fprintf(stderr,"++3dSpatNorm: Output in SpatNorm space\n") ;
}
#if 0
if( AFNI_yesenv("WATERSHED") ){
imin = mri_watershedize( imout , 0.10 ) ;
if( imin != NULL ){ mri_free(imout); imout = imin; }
}
#endif
/*--- create output dataset ---*/
if( verb )
fprintf(stderr,"++3dSpatNorm: Creating output dset\n") ;
oset = EDIT_empty_copy( NULL ) ;
tross_Copy_History( iset , oset ) ;
tross_Make_History( "3dSpatNorm" , argc,argv , oset ) ;
LOAD_IVEC3( nxyz , imout->nx , imout->ny , imout->nz ) ;
LOAD_FVEC3( dxyz , imout->dx , imout->dy , imout->dz ) ;
LOAD_FVEC3( orgxyz , imout->xo , imout->yo , imout->zo ) ;
LOAD_IVEC3( orixyz , ORI_R2L_TYPE , ORI_A2P_TYPE , ORI_I2S_TYPE ) ;
if( verb )
fprintf(stderr,"++3dSpatNorm: EDIT_dset_items\n") ;
EDIT_dset_items( oset ,
ADN_prefix , prefix ,
ADN_datum_all , imout->kind ,
ADN_nxyz , nxyz ,
ADN_xyzdel , dxyz ,
ADN_xyzorg , orgxyz ,
ADN_xyzorient , orixyz ,
ADN_malloc_type , DATABLOCK_MEM_MALLOC ,
ADN_view_type , VIEW_ORIGINAL_TYPE ,
ADN_type , HEAD_ANAT_TYPE ,
ADN_func_type , ANAT_BUCK_TYPE ,
ADN_none ) ;
if( verb )
fprintf(stderr,"++3dSpatNorm: EDIT_substitute_brick\n") ;
EDIT_substitute_brick( oset , 0 , imout->kind , mri_data_pointer(imout) ) ;
if (OrigSpace) {
if( verb )
fprintf(stderr,"++3dSpatNorm: Changing orientation from RAI\n") ;
ooset = r_new_resam_dset ( oset, iset, 0, 0, 0, NULL, MRI_NN, NULL, 1, 0);
if (!ooset) {
fprintf(stderr,"**ERROR: Failed to reslice!?\n"); exit(1);
}
/* put prefix back, r_new_resam_dset puts dummy prefix */
EDIT_dset_items( ooset ,
ADN_prefix , prefix,
ADN_none ) ;
DSET_delete(oset); oset = ooset; ooset = NULL;
}
if (iset_scaled != 1.0f)
THD_volDXYZscale(oset->daxes,
1/iset_scaled, 0);
DSET_write(oset) ;
if( verb )
fprintf(stderr,"++3dSpatNorm: wrote dataset %s\n",DSET_BRIKNAME(oset)) ;
exit(0) ;
}
MRI_IMAGE * FD_brick_to_series( int ixyz , FD_brick *br )
{
MRI_IMAGE *im ; /* output */
int nv , ival ;
char *iar ; /* brick in the input */
MRI_TYPE typ ;
int ix,jy,kz , ind ;
THD_ivec3 ind_fd , ind_ds ;
if( ixyz < 0 || ixyz >= br->n1 * br->n2 * br->n3 ) return NULL ;
/** otherwise, get ready for a real image **/
ix = ixyz % br->n1 ;
jy = ( ixyz % (br->n1 * br->n2) ) / br->n1 ;
kz = ixyz / (br->n1 * br->n2) ;
LOAD_IVEC3( ind_fd , ix,jy,kz ) ; ind_ds = THD_fdind_to_3dind( br , ind_fd ) ;
ix = ind_ds.ijk[0] ;
jy = ind_ds.ijk[1] ;
kz = ind_ds.ijk[2] ;
ind = (kz * br->dset->daxes->nyy + jy) * br->dset->daxes->nxx + ix ;
nv = br->dset->dblk->nvals ;
iar = DSET_ARRAY(br->dset,0) ;
if( iar == NULL ){ /* if data needs to be loaded from disk */
(void) THD_load_datablock( br->dset->dblk ) ;
iar = DSET_ARRAY(br->dset,0) ;
if( iar == NULL ) return NULL ;
}
/* 15 Sep 2004: allow for nonconstant datum */
if( !DSET_datum_constant(br->dset) ){ /* only for stupid users */
float *ar ;
im = mri_new( nv , 1 , MRI_float ) ; ar = MRI_FLOAT_PTR(im) ;
for( ival = 0 ; ival < nv ; ival++ )
ar[ival] = THD_get_voxel( br->dset , ind , ival ) ;
goto image_done ;
}
/* the older (more efficient) way */
typ = DSET_BRICK_TYPE(br->dset,0) ;
im = mri_new( nv , 1 , typ ) ;
#if 0
mri_zero_image(im) ; /* 18 Oct 2001 */
#endif
switch( typ ){
default: /* don't know what to do --> return nada */
mri_free( im ) ;
return NULL ;
case MRI_byte:{
byte *ar = MRI_BYTE_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (byte *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
case MRI_short:{
short *ar = MRI_SHORT_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (short *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
case MRI_float:{
float *ar = MRI_FLOAT_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (float *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
case MRI_int:{
int *ar = MRI_INT_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (int *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
case MRI_double:{
double *ar = MRI_DOUBLE_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (double *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
case MRI_complex:{
complex *ar = MRI_COMPLEX_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (complex *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
/* 15 Apr 2002: RGB types */
case MRI_rgb:{
rgbyte *ar = (rgbyte *) MRI_RGB_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (rgbyte *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
case MRI_rgba:{
rgba *ar = (rgba *) MRI_RGBA_PTR(im) , *bar ;
for( ival=0 ; ival < nv ; ival++ ){
bar = (rgba *) DSET_ARRAY(br->dset,ival) ;
if( bar != NULL ) ar[ival] = bar[ind] ;
}
}
break ;
}
if( THD_need_brick_factor(br->dset) ){
MRI_IMAGE *qim ;
qim = mri_mult_to_float( br->dset->dblk->brick_fac , im ) ;
mri_free(im) ; im = qim ;
}
/* at this point, the image is ready to ship out;
but first, maybe attach a time origin and spacing */
image_done:
if( br->dset->taxis != NULL ){ /* 21 Oct 1996 */
float zz , tt ;
zz = br->dset->daxes->zzorg + kz * br->dset->daxes->zzdel ;
tt = THD_timeof( 0 , zz , br->dset->taxis ) ;
im->xo = tt ; im->dx = br->dset->taxis->ttdel ; /* origin and delta */
if( br->dset->taxis->units_type == UNITS_MSEC_TYPE ){ /* convert to sec */
im->xo *= 0.001 ; im->dx *= 0.001 ;
}
} else {
im->xo = 0.0 ; im->dx = 1.0 ; /* 08 Nov 1996 */
}
return im ;
}
int main( int argc , char *argv[] )
{
THD_3dim_dataset *dset_in=NULL , *dset_out ;
int Lxx=-1 , Lyy=-1 , Lzz=-1 , Mode=FFT_ABS , Sign=-1 , do_alt=0 ;
char *prefix = "FFTout" ;
int iarg ;
MRI_IMAGE *inim , *outim ; float fac ; int nx,ny,nz ;
THD_ivec3 iv ;
if( argc < 2 || strcasecmp(argv[1],"-help") == 0 ){
printf(
"Usage: 3dFFT [options] dataset\n"
"\n"
"* Does the FFT of the input dataset in 3 directions (x,y,z) and\n"
" produces the output dataset.\n"
"\n"
"* Why you'd want to do this is an interesting question.\n"
"\n"
"* Program 3dcalc can operate on complex-valued datasets, but\n"
" only on one component at a time (cf. the '-cx2r' option).\n"
"\n"
"* Most other AFNI programs can only operate on real-valued\n"
" datasets.\n"
"\n"
"* You could use 3dcalc (twice) to split a complex-valued dataset\n"
" into two real-valued datasets, do your will on those with other\n"
" AFNI programs, then merge the results back into a complex-valued\n"
" dataset with 3dTwotoComplex.\n"
"\n"
"Options\n"
"=======\n"
" -abs = Outputs the magnitude of the FFT [default]\n"
" -phase = Outputs the phase of the FFT (-PI..PI == no unwrapping!)\n"
" -complex = Outputs the complex-valued FFT\n"
" -inverse = Does the inverse FFT instead of the forward FFT\n"
"\n"
" -Lx xx = Use FFT of length 'xx' in the x-direction\n"
" -Ly yy = Use FFT of length 'yy' in the y-direction\n"
" -Lz zz = Use FFT of length 'zz' in the z-direction\n"
" * Set a length to 0 to skip the FFT in that direction\n"
"\n"
" -altIN = Alternate signs of input data before FFT, to bring\n"
" zero frequency from edge of FFT-space to center of grid\n"
" for cosmetic purposes.\n"
" -altOUT = Alternate signs of output data after FFT. If you\n"
" use '-altI' on the forward transform, then you should\n"
" use '-altO' an the inverse transform, to get the\n"
" signs of the recovered image correct.\n"
" **N.B.: You cannot use '-altIN' and '-altOUT' in the same run!\n"
"\n"
" -input dd = Read the input dataset from 'dd', instead of\n"
" from the last argument on the command line.\n"
"\n"
" -prefix pp = Use 'pp' for the output dataset prefix.\n"
"\n"
"Notes\n"
"=====\n"
" * In the present avatar, only 1 sub-brick will be processed.\n"
"\n"
" * The program can only do FFT lengths that are factorable\n"
" into a product of powers of 2, 3, and 5, and are even.\n"
" + The largest power of 3 that is allowed is 3^3 = 27.\n"
" + The largest power of 5 that is allowed is 5^3 = 125.\n"
" + e.g., FFT of length 3*5*8=120 is possible.\n"
" + e.g., FFT of length 4*31 =124 is not possible.\n"
"\n"
" * The 'x', 'y', and 'z' axes here refer to the order the\n"
" data is stored, not DICOM coordinates; cf. 3dinfo.\n"
"\n"
" * If you force (via '-Lx' etc.) an FFT length that is not\n"
" allowed, the program will stop with an error message.\n"
"\n"
" * If you force an FFT length that is shorter than an dataset\n"
" axis dimension, the program will stop with an error message.\n"
"\n"
" * If you don't force an FFT length along a particular axis,\n"
" the program will pick the smallest legal value that is\n"
" greater than or equal to the corresponding dataset dimension.\n"
" + e.g., 124 would be increased to 128.\n"
"\n"
" * If an FFT length is longer than an axis length, then the\n"
" input data in that direction is zero-padded at the end.\n"
"\n"
" * For -abs and -phase, the output dataset is in float format.\n"
"\n"
" * If you do the forward and inverse FFT, then you should get back\n"
" the original dataset, except for roundoff error and except that\n"
" the new dataset axis dimensions may be longer than the original.\n"
"\n"
" * Forward FFT = sum_{k=0..N-1} [ exp(-2*PI*i*k/N) * data(k) ]\n"
"\n"
" * Inverse FFT = sum_{k=0..N-1} [ exp(+2*PI*i*k/N) * data(k) ] / N\n"
"\n"
" * Started a long time ago, but only finished in Aug 2009 at the\n"
" request of John Butman, because he asked so nicely. (Now pay up!)\n"
) ;
PRINT_COMPILE_DATE ; exit(0) ;
}
PRINT_VERSION("3dFFT") ;
mainENTRY("3dFFT main") ; machdep() ; AUTHOR("RW Cox") ;
AFNI_logger("3dFFT",argc,argv) ;
/*--- scan args ---*/
iarg = 1 ;
while( iarg < argc && argv[iarg][0] == '-' ){
if( strncasecmp(argv[iarg],"-altI",5) == 0 ){
do_alt = 1 ; iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-altOUT",5) == 0 ){
do_alt = -1 ; iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-inverse",4) == 0 ){
Sign = +1 ; iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-abs",4) == 0 ){
Mode = FFT_ABS ; iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-phase",4) == 0 ){
Mode = FFT_PHASE ; iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-complex",4) == 0 ){
Mode = FFT_COMPLEX ; iarg++ ; continue ;
}
if( strlen(argv[iarg]) == 3 && strncmp(argv[iarg],"-L",2) == 0 ){
int lll=-1 , mmm ; char *ept ;
iarg++ ;
if( iarg >= argc )
ERROR_exit("need an argument after option %s",argv[iarg-1]) ;
lll = strtol( argv[iarg] , &ept , 10 ) ;
if( *ept != '\0' )
ERROR_exit("bad argument after option %s",argv[iarg-1]) ;
if( lll > 0 && (mmm = csfft_nextup_even(lll)) != lll )
ERROR_exit(
"'%s %d' is not a legal FFT length here: next largest legal value = %d" ,
argv[iarg-1] , lll , mmm ) ;
switch( argv[iarg-1][2] ){
case 'x': case 'X': Lxx = lll ; break ;
case 'y': case 'Y': Lyy = lll ; break ;
case 'z': case 'Z': Lzz = lll ; break ;
default: ERROR_exit("unknown option '%s'",argv[iarg-1]) ;
}
iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-prefix",4) == 0 ){
iarg++ ;
if( iarg >= argc )
ERROR_exit("need an argument after %s\n",argv[iarg-1]) ;
prefix = strdup( argv[iarg] ) ;
if( !THD_filename_ok(prefix) )
ERROR_exit("bad argument after %s\n",argv[iarg-1]) ;
iarg++ ; continue ;
}
if( strncasecmp(argv[iarg],"-input",4) == 0 ){
iarg++ ;
if( iarg >= argc )
ERROR_exit("need an argument after %s\n",argv[iarg-1]) ;
dset_in = THD_open_dataset(argv[iarg]); CHECK_OPEN_ERROR(dset_in,argv[iarg]);
iarg++ ; continue ;
}
ERROR_exit("unknown option '%s'\n",argv[iarg]) ;
}
/* check for simple errors */
if( Lxx == 0 && Lyy == 0 && Lzz == 0 )
ERROR_exit("-Lx, -Ly, -Lz all given as zero?!") ;
/* open input dataset */
if( dset_in == NULL ){
if( iarg >= argc ) ERROR_exit("no input dataset on command line?!\n") ;
dset_in = THD_open_dataset(argv[iarg]); CHECK_OPEN_ERROR(dset_in,argv[iarg]);
}
nx = DSET_NX(dset_in) ; ny = DSET_NY(dset_in) ; nz = DSET_NZ(dset_in) ;
if( DSET_NVALS(dset_in) > 1 )
WARNING_message("only 3dFFT-ing sub-brick #0 of input dataset") ;
/* establish actual FFT lengths now (0 ==> no FFT) */
if( nx == 1 ) Lxx = 0 ; /* can't FFT if dataset is shrimpy! */
if( ny == 1 ) Lyy = 0 ;
if( nz == 1 ) Lzz = 0 ;
if( Lxx < 0 ) Lxx = csfft_nextup_even(nx) ; /* get FFT length from */
if( Lyy < 0 ) Lyy = csfft_nextup_even(ny) ; /* dataset dimensions */
if( Lzz < 0 ) Lzz = csfft_nextup_even(nz) ;
INFO_message("x-axis length=%d ; FFT length=%d %s",nx,Lxx,(Lxx==0)?"==> none":"\0") ;
INFO_message("y-axis length=%d ; FFT length=%d %s",ny,Lyy,(Lyy==0)?"==> none":"\0") ;
INFO_message("z-axis length=%d ; FFT length=%d %s",nz,Lzz,(Lzz==0)?"==> none":"\0") ;
if( Lxx > 0 && Lxx < nx ) ERROR_exit("x-axis FFT length too short for data!") ;
if( Lyy > 0 && Lyy < ny ) ERROR_exit("y-axis FFT length too short for data!") ;
if( Lzz > 0 && Lzz < nz ) ERROR_exit("z-axis FFT length too short for data!") ;
/* extract sub-brick #0 */
DSET_load(dset_in) ; CHECK_LOAD_ERROR(dset_in) ;
inim = mri_to_complex( DSET_BRICK(dset_in,0) ) ; /* convert input to complex */
fac = DSET_BRICK_FACTOR(dset_in,0) ;
if( fac > 0.0f && fac != 1.0f ){ /* scale it if needed */
int ii , nvox = nx*ny*nz ; complex *car = MRI_COMPLEX_PTR(inim) ;
for( ii=0 ; ii < nvox ; ii++ ){ car[ii].r *= fac ; car[ii].i *= fac ; }
}
DSET_unload(dset_in) ; /* input data is all copied now */
/* FFT to get output image */
csfft_scale_inverse(1) ; /* scale by 1/N for inverse FFTs */
outim = mri_fft_3D( Sign , inim , Lxx,Lyy,Lzz , do_alt ) ;
mri_free(inim) ;
/* post-process output? */
switch( Mode ){
case FFT_ABS:{
MRI_IMAGE *qim = mri_complex_abs(outim) ;
mri_free(outim) ; outim = qim ;
}
break ;
case FFT_PHASE:{
MRI_IMAGE *qim = mri_complex_phase(outim) ;
mri_free(outim) ; outim = qim ;
}
break ;
}
/* create and write output dataset */
dset_out = EDIT_empty_copy( dset_in ) ;
tross_Copy_History( dset_in , dset_out ) ;
tross_Make_History( "3dFFT" , argc,argv , dset_out ) ;
LOAD_IVEC3( iv , outim->nx , outim->ny , outim->nz ) ;
EDIT_dset_items( dset_out ,
ADN_prefix , prefix ,
ADN_nvals , 1 ,
ADN_ntt , 0 ,
ADN_nxyz , iv , /* change dimensions, possibly */
ADN_none ) ;
EDIT_BRICK_FACTOR( dset_out , 0 , 0.0 ) ;
EDIT_substitute_brick( dset_out , 0 , outim->kind , mri_data_pointer(outim) ) ;
DSET_write(dset_out) ; WROTE_DSET(dset_out) ; DSET_unload(dset_out) ;
exit(0) ;
}
THD_3dim_dataset * THD_open_nifti( char *pathname )
{
THD_3dim_dataset *dset=NULL ;
nifti_image *nim ;
int ntt , nbuc , nvals ;
int use_qform = 0 , use_sform = 0, form_code = 0 ;
int statcode = 0 , datum , iview , ibr ;
int scale_data = 0 ; /* flag based on scl_slope and inter 20 Jun 2008 */
int xform_data = 0;
THD_ivec3 orixyz , nxyz ;
THD_fvec3 dxyz , orgxyz ;
THD_mat33 R ;
mat44 ijk_to_dicom44 ;
char *ppp , prefix[THD_MAX_PREFIX] ;
char form_priority = 'S' ; /* 23 Mar 2006 */
static int n_xform_warn=0;
ENTRY("THD_open_nifti") ;
/*-- open input file --*/
{ /* set the nifti_io debug level 8 Apr 2005 [rickr] */
char * ept = my_getenv("AFNI_NIFTI_DEBUG");
if( ept != NULL ) nifti_set_debug_level(atoi(ept));
}
nifti_set_alter_cifti(1) ; /* if CIFTI, shift dims 23 Jul 2015 [rickr] */
nim = nifti_image_read( pathname, 0 ) ;
if( nim == NULL || nim->nifti_type == 0 ) RETURN(NULL) ;
/*-- extract some useful AFNI-ish information from the nim struct --*/
/* we must have at least 2 spatial dimensions */
/* this should be okay 11 Jun 2007 */
/* if( nim->nx < 2 || nim->ny < 2 ) RETURN(NULL) ; */
/* 4th dimension = time; 5th dimension = bucket:
these are mutually exclusive in AFNI at present */
ntt = nim->nt ; nbuc = nim->nu ;
/* nt and nu might be 0 now (see irritating niftilib 1.17 update) */
/* so ensure that ntt and nbuc are positive 02 Mar 2006 [rickr] */
if( ntt <= 0 ) ntt = 1;
if( nbuc <= 0 ) nbuc = 1;
if( nim->nz <= 0 ) nim->nz = 1 ; /* 03 Mar 2006: RWCox */
if( ntt > 1 && nbuc > 1 ){
fprintf(stderr,
"** AFNI can't deal with 5 dimensional NIfTI(%s)\n",
pathname ) ;
RETURN(NULL) ;
}
nvals = MAX(ntt,nbuc) ;
/* collapse higher-dimensional datasets 23 Jul 2015 [rickr] */
/* (this includes CIFTI) */
if( nim->nv > 1 ) nvals *= nim->nv;
if( nim->nw > 1 ) nvals *= nim->nw;
if( ntt > 1 ) ntt = nvals;
else nbuc = nvals;
/* determine type of dataset values:
if we are scaling, or if the data type in the NIfTI file
is something AFNI can't handle, then the result will be floats */
/* do not scale if slope is 0 or if slope is 1 and inter is 0 */
if( !isfinite(nim->scl_slope) || !isfinite(nim->scl_inter) ){
fprintf(stderr,"** bad scl_slope and inter = %f, %f, ignoring...\n",
nim->scl_slope, nim->scl_inter);
} else {
scale_data = nim->scl_slope != 0.0 &&
(nim->scl_slope != 1.0 || nim->scl_inter != 0.0) ;
}
{ char *eee = getenv("AFNI_NIFTI_SCALE") ;
if( eee != NULL && toupper(*eee) == 'N' ) scale_data = 0 ;
}
switch( nim->datatype ){
default:
fprintf(stderr,
"** AFNI can't handle NIFTI datatype=%d (%s) in file %s\n",
nim->datatype, nifti_datatype_string(nim->datatype), pathname );
RETURN(NULL) ;
break ;
case DT_UINT8: datum = scale_data ? MRI_float : MRI_byte ;
xform_data = scale_data;
break ;
case DT_INT16: datum = scale_data ? MRI_float : MRI_short ;
xform_data = scale_data;
break ;
case DT_FLOAT32: datum = MRI_float ; break ;
case DT_COMPLEX64: datum = MRI_complex ; break ;
case DT_RGB24: datum = MRI_rgb ; break ;
case DT_INT8: /* NIfTI-1 data types that AFNI can't handle directly */
case DT_UINT16:
case DT_INT32:
case DT_UINT32:
case DT_FLOAT64: datum = MRI_float ; xform_data = 1 ; break ;
#if 0
case DT_COMPLEX128: /* this case would be too much like real work */
fprintf(stderr,
"** AFNI convert NIFTI_datatype=%d (%s) in file %s to COMPLEX64\n",
nim->datatype, nifti_datatype_string(nim->datatype), pathname );
datum = MRI_complex ;
break ;
#endif
}
if( xform_data && !AFNI_noenv("AFNI_NIFTI_TYPE_WARN")) {
if (!n_xform_warn || AFNI_yesenv("AFNI_NIFTI_TYPE_WARN")) {/* ZSS 04/11 */
fprintf(stderr,
"** AFNI converts NIFTI_datatype=%d (%s) in file %s to FLOAT32\n",
nim->datatype, nifti_datatype_string(nim->datatype), pathname );
if (!AFNI_yesenv("AFNI_NIFTI_TYPE_WARN")) {
fprintf(stderr,
" Warnings of this type will be muted for this session.\n"
" Set AFNI_NIFTI_TYPE_WARN to YES to see them all, NO to see none.\n");
}
}
++n_xform_warn;
}
/* check for statistics code */
if( nim->intent_code >= NIFTI_FIRST_STATCODE &&
nim->intent_code <= NIFTI_LAST_STATCODE ){
if( nim->intent_code > FUNC_PT_TYPE ){
fprintf(stderr,
"** AFNI doesn't understand NIFTI statistic type %d (%s) in file %s\n",
nim->intent_code , nifti_intent_string(nim->intent_code) , pathname ) ;
} else {
statcode = nim->intent_code ;
if( nbuc > 1 ){
fprintf(stderr,
"** AFNI doesn't support NIFTI voxel-dependent statistic parameters"
" in file %s\n" , pathname ) ;
statcode = 0 ;
}
}
}
/* 23 Mar 2006: set qform or sform as having priority -- RWCox */
ppp = my_getenv("NIFTI_FORM_PRIORITY") ;
if( ppp == NULL ) ppp = getenv("AFNI_FORM_PRIORITY") ;
if( ppp == NULL ) ppp = getenv("AFNI_NIFTI_PRIORITY") ;
if( ppp == NULL ) ppp = getenv("AFNI_NIFTI_FORM") ;
if( ppp == NULL ) ppp = getenv("AFNI_NIFTI_FORM_PRIORITY") ;
if( ppp != NULL ){
char fp = toupper(*ppp) ;
if( fp == 'S' || fp == 'Q' ) form_priority = fp ;
else WARNING_message("Illegal NIFTI_FORM_PRIORITY='%s'",ppp) ;
}
/** 24 Mar 2006: check determs of qform and sform, if have both **/
if( nim->qform_code > 0 && nim->sform_code > 0 ){
float qdet , sdet ;
LOAD_MAT(R, nim->qto_xyz.m[0][0] ,
nim->qto_xyz.m[0][1] ,
nim->qto_xyz.m[0][2] ,
nim->qto_xyz.m[1][0] ,
nim->qto_xyz.m[1][1] ,
nim->qto_xyz.m[1][2] ,
nim->qto_xyz.m[2][0] ,
nim->qto_xyz.m[2][1] ,
nim->qto_xyz.m[2][2] ) ; qdet = MAT_DET(R) ;
LOAD_MAT(R, nim->sto_xyz.m[0][0] ,
nim->sto_xyz.m[0][1] ,
nim->sto_xyz.m[0][2] ,
nim->sto_xyz.m[1][0] ,
nim->sto_xyz.m[1][1] ,
nim->sto_xyz.m[1][2] ,
nim->sto_xyz.m[2][0] ,
nim->sto_xyz.m[2][1] ,
nim->sto_xyz.m[2][2] ) ; sdet = MAT_DET(R) ;
if( qdet*sdet < 0.0f )
WARNING_message("NIfTI('%s'): Qform/Sform handedness differ; %c wins!",
pathname , form_priority ) ;
}
/* KRH 07/11/05 -- adding ability to choose spatial transform
from the options of qform, sform, bothform, or noform.
If qform is present, it will be used.
If qform is absent, but sform present, then the sform
will be modified to be an orthogonal rotation and used.
If both qform and sform are absent, then we will have
an error.
Previously assumed qform present. */
/* 23 Mar 2006: use form_priority to choose between them */
if ((nim->qform_code > 0) && (nim->sform_code > 0) ) {
if( form_priority == 'Q' ) { use_qform = 1 ; use_sform = 0 ; }
else { use_qform = 0 ; use_sform = 1 ; }
} else if (nim->qform_code > 0){ use_qform = 1 ; use_sform = 0 ; }
else if (nim->sform_code > 0){ use_qform = 0 ; use_sform = 1 ; }
else {
use_qform = 0 ; use_sform = 0 ;
WARNING_message(
"NO spatial transform (neither qform nor sform), in NIfTI file '%s'" ,
pathname ) ;
}
/** now take NIfTI-1.1 coords and transform to AFNI codes **/
if (use_qform) {
float orgx, orgy, orgz ;
form_code = nim->qform_code;
/* determine orientation from the qto_xyz matrix,
which transforms (i,j,k) voxel indexes to (x,y,z) LPI coordinates */
LOAD_MAT(R, -nim->qto_xyz.m[0][0] , /* negate x and y */
-nim->qto_xyz.m[0][1] , /* coefficients, */
-nim->qto_xyz.m[0][2] , /* since AFNI works */
-nim->qto_xyz.m[1][0] , /* with RAI coords, */
-nim->qto_xyz.m[1][1] , /* but NIFTI uses */
-nim->qto_xyz.m[1][2] , /* LPI coordinates. */
nim->qto_xyz.m[2][0] , /* [Which is my own] */
nim->qto_xyz.m[2][1] , /* [damn fault!!!!!] */
nim->qto_xyz.m[2][2] ) ;
LOAD_MAT44(ijk_to_dicom44,
-nim->qto_xyz.m[0][0] , /* negate x and y */
-nim->qto_xyz.m[0][1] , /* coefficients, */
-nim->qto_xyz.m[0][2] , /* since AFNI works */
-nim->qto_xyz.m[0][3] ,
-nim->qto_xyz.m[1][0] , /* with RAI coords, */
-nim->qto_xyz.m[1][1] , /* but NIFTI uses */
-nim->qto_xyz.m[1][2] , /* LPI coordinates. */
-nim->qto_xyz.m[1][3] ,
nim->qto_xyz.m[2][0] , /* [Which is my own] */
nim->qto_xyz.m[2][1] , /* [damn fault!!!!!] */
nim->qto_xyz.m[2][2] ,
nim->qto_xyz.m[2][3] ) ;
orixyz = THD_matrix_to_orientation( R ) ; /* compute orientation codes */
iview = NIFTI_code_to_view(nim->qform_code);
/* load the offsets and the grid spacings */
if (ORIENT_xyz[orixyz.ijk[0]] == 'z' ) {
orgx = nim->qto_xyz.m[ORIENT_xyzint[orixyz.ijk[0]] - 1][3] ;
} else {
orgx = - nim->qto_xyz.m[ORIENT_xyzint[orixyz.ijk[0]] - 1][3] ;
}
if (ORIENT_xyz[orixyz.ijk[1]] == 'z' ) {
orgy = nim->qto_xyz.m[ORIENT_xyzint[orixyz.ijk[1]] - 1][3] ;
} else {
orgy = - nim->qto_xyz.m[ORIENT_xyzint[orixyz.ijk[1]] - 1][3] ;
}
if (ORIENT_xyz[orixyz.ijk[2]] == 'z' ) {
orgz = nim->qto_xyz.m[ORIENT_xyzint[orixyz.ijk[2]] - 1][3] ;
} else {
orgz = - nim->qto_xyz.m[ORIENT_xyzint[orixyz.ijk[2]] - 1][3] ;
}
LOAD_FVEC3( orgxyz , orgx ,
orgy ,
orgz ) ;
#if 0
LOAD_FVEC3( orgxyz , -nim->qto_xyz.m[0][3] , /* again, negate */
-nim->qto_xyz.m[1][3] , /* x and y coords */
nim->qto_xyz.m[2][3] ) ;
#endif
/* AFNI space units are always mm */
if( nim->xyz_units == NIFTI_UNITS_METER ){
nim->dx *= 1000.0 ; nim->dy *= 1000.0 ; nim->dz *= 1000.0 ;
} else if( nim->xyz_units == NIFTI_UNITS_MICRON ){
nim->dx *= 0.001 ; nim->dy *= 0.001 ; nim->dz *= 0.001 ;
}
LOAD_FVEC3( dxyz , (ORIENT_sign[orixyz.ijk[0]]=='+') ? nim->dx : -nim->dx ,
(ORIENT_sign[orixyz.ijk[1]]=='+') ? nim->dy : -nim->dy ,
(ORIENT_sign[orixyz.ijk[2]]=='+') ? nim->dz : -nim->dz ) ;
} else if (use_sform) {
int orimap[7] = { 6 , 1 , 0 , 2 , 3 , 4 , 5 } ;
int oritmp[3] ;
float dxtmp, dytmp, dztmp ;
float xmax, ymax, zmax ;
float orgx, orgy, orgz ;
float fig_merit, ang_merit ;
form_code = nim->sform_code;
/* convert sform to nifti orientation codes */
/* n2 10 Jul, 2015 [rickr] */
nifti_dmat44_to_orientation(nim->sto_xyz,
&oritmp[0], &oritmp[1], &oritmp[2] ) ;
/* convert nifti orientation codes to AFNI codes and store in vector */
LOAD_IVEC3( orixyz , orimap[oritmp[0]] ,
orimap[oritmp[1]] ,
orimap[oritmp[2]] ) ;
/* assume original view if there's no talairach id present */
iview = NIFTI_code_to_view(nim->sform_code);
/* load the offsets and the grid spacings */
if (ORIENT_xyz[orixyz.ijk[0]] == 'z' ) {
orgx = nim->sto_xyz.m[ORIENT_xyzint[orixyz.ijk[0]] - 1][3] ;
} else {
orgx = - nim->sto_xyz.m[ORIENT_xyzint[orixyz.ijk[0]] - 1][3] ;
}
if (ORIENT_xyz[orixyz.ijk[1]] == 'z' ) {
orgy = nim->sto_xyz.m[ORIENT_xyzint[orixyz.ijk[1]] - 1][3] ;
} else {
orgy = - nim->sto_xyz.m[ORIENT_xyzint[orixyz.ijk[1]] - 1][3] ;
}
if (ORIENT_xyz[orixyz.ijk[2]] == 'z' ) {
orgz = nim->sto_xyz.m[ORIENT_xyzint[orixyz.ijk[2]] - 1][3] ;
} else {
orgz = - nim->sto_xyz.m[ORIENT_xyzint[orixyz.ijk[2]] - 1][3] ;
}
LOAD_FVEC3( orgxyz , orgx ,
orgy ,
orgz ) ;
#if 0
LOAD_FVEC3( orgxyz , -nim->sto_xyz.m[0][3] , /* again, negate */
-nim->sto_xyz.m[1][3] , /* x and y coords */
nim->sto_xyz.m[2][3] ) ;
#endif
#define MAXNUM(a,b) ( (a) > (b) ? (a):(b))
#define MAX3(a,b,c) ( (MAXNUM(a,b)) > (MAXNUM(a,c)) ? (MAXNUM(a,b)):(MAXNUM(a,c)))
#define MINNUM(a,b) ( (a) < (b) ? (a):(b))
#define MIN3(a,b,c) ( (MINNUM(a,b)) < (MINNUM(a,c)) ? (MINNUM(a,b)):(MINNUM(a,c)))
dxtmp = sqrt ( nim->sto_xyz.m[0][0] * nim->sto_xyz.m[0][0] +
nim->sto_xyz.m[1][0] * nim->sto_xyz.m[1][0] +
nim->sto_xyz.m[2][0] * nim->sto_xyz.m[2][0] ) ;
xmax = MAX3(fabs(nim->sto_xyz.m[0][0]),fabs(nim->sto_xyz.m[1][0]),fabs(nim->sto_xyz.m[2][0])) / dxtmp ;
dytmp = sqrt ( nim->sto_xyz.m[0][1] * nim->sto_xyz.m[0][1] +
nim->sto_xyz.m[1][1] * nim->sto_xyz.m[1][1] +
nim->sto_xyz.m[2][1] * nim->sto_xyz.m[2][1] ) ;
ymax = MAX3(fabs(nim->sto_xyz.m[0][1]),fabs(nim->sto_xyz.m[1][1]),fabs(nim->sto_xyz.m[2][1])) / dytmp ;
dztmp = sqrt ( nim->sto_xyz.m[0][2] * nim->sto_xyz.m[0][2] +
nim->sto_xyz.m[1][2] * nim->sto_xyz.m[1][2] +
nim->sto_xyz.m[2][2] * nim->sto_xyz.m[2][2] ) ;
zmax = MAX3(fabs(nim->sto_xyz.m[0][2]),fabs(nim->sto_xyz.m[1][2]),fabs(nim->sto_xyz.m[2][2])) / dztmp ;
fig_merit = MIN3(xmax,ymax,zmax) ;
ang_merit = acos (fig_merit) * 180.0 / 3.141592653 ;
#if 0
if (fabs(ang_merit) > .01) {
WARNING_message (
"qform not present in:\n"
" '%s'\n"
" oblique sform used, and the worst axis is\n"
" %f degrees from plumb.\n"
" If you are performing spatial transformations on this dset, \n"
" or viewing/combining it with volumes of differing obliquity,\n"
" you should consider running: \n"
" 3dWarp -deoblique \n"
" on this and other oblique datasets in the same session.\n"
,pathname, ang_merit ) ;
}
#endif
if( nim->xyz_units == NIFTI_UNITS_METER ){
dxtmp *= 1000.0 ; dytmp *= 1000.0 ; dztmp *= 1000.0 ;
} else if( nim->xyz_units == NIFTI_UNITS_MICRON ){
dxtmp *= 0.001 ; dytmp *= 0.001 ; dztmp *= 0.001 ;
}
LOAD_FVEC3( dxyz , (ORIENT_sign[orixyz.ijk[0]]=='+') ? dxtmp : -dxtmp ,
(ORIENT_sign[orixyz.ijk[1]]=='+') ? dytmp : -dytmp ,
(ORIENT_sign[orixyz.ijk[2]]=='+') ? dztmp : -dztmp ) ;
LOAD_MAT44(ijk_to_dicom44, -nim->sto_xyz.m[0][0] , /* negate x and y */
-nim->sto_xyz.m[0][1] , /* coefficients, */
-nim->sto_xyz.m[0][2] , /* since AFNI works */
-nim->sto_xyz.m[0][3] ,
-nim->sto_xyz.m[1][0] , /* with RAI coords, */
-nim->sto_xyz.m[1][1] , /* but NIFTI uses */
-nim->sto_xyz.m[1][2] , /* LPI coordinates. */
-nim->sto_xyz.m[1][3] ,
nim->sto_xyz.m[2][0] , /* [Which is my own] */
nim->sto_xyz.m[2][1] , /* [damn fault!!!!!] */
nim->sto_xyz.m[2][2] ,
nim->sto_xyz.m[2][3] ) ;
} else { /* NO SPATIAL XFORM. BAD BAD BAD BAD BAD BAD. */
float dxtmp, dytmp, dztmp ;
/* if pixdim data are present, use them in order to set pixel
dimensions. otherwise, set the dimensions to 1 unit. */
dxtmp = ((nim->pixdim[1] > 0) ? nim->pixdim[1] : 1) ;
dytmp = ((nim->pixdim[2] > 0) ? nim->pixdim[2] : 1) ;
dztmp = ((nim->pixdim[3] > 0) ? nim->pixdim[3] : 1) ;
if( nim->xyz_units == NIFTI_UNITS_METER ){
dxtmp *= 1000.0 ; dytmp *= 1000.0 ; dztmp *= 1000.0 ;
} else if( nim->xyz_units == NIFTI_UNITS_MICRON ){
dxtmp *= 0.001 ; dytmp *= 0.001 ; dztmp *= 0.001 ;
}
/* set orientation to LPI by default */
LOAD_IVEC3( orixyz , 1 ,
2 ,
4 ) ;
LOAD_FVEC3( dxyz , (ORIENT_sign[orixyz.ijk[0]]=='+') ? dxtmp : -dxtmp ,
(ORIENT_sign[orixyz.ijk[1]]=='+') ? dytmp : -dytmp ,
(ORIENT_sign[orixyz.ijk[2]]=='+') ? dztmp : -dztmp ) ;
iview = NIFTI_default_view();
/* set origin to 0,0,0 */
LOAD_FVEC3( orgxyz , 0 ,
0 ,
0 ) ;
/* put scaled identity matrix by default */
LOAD_MAT44(ijk_to_dicom44, dxtmp, 0.0, 0.0, 0.0,
0.0, dytmp, 0.0, 0.0,
0.0, 0.0, dztmp, 0.0 );
}
/*-- make an AFNI dataset! --*/
dset = EDIT_empty_copy(NULL) ;
ppp = THD_trailname(pathname,0) ; /* strip directory */
MCW_strncpy( prefix , ppp , THD_MAX_PREFIX ) ; /* to make prefix */
/* You need to set the path too
before, if you loaded ~/tmp/joe.nii the path appeared
to be ./joe.nii, troubling in multiple instances.
ZSS Dec 2011 */
THD_init_diskptr_names( dset->dblk->diskptr ,
THD_filepath(pathname) ,
NULL , prefix ,
dset->view_type , True );
nxyz.ijk[0] = nim->nx ; /* grid dimensions */
nxyz.ijk[1] = nim->ny ;
nxyz.ijk[2] = nim->nz ;
dset->idcode.str[0] = 'N' ; /* overwrite 1st 3 bytes with something special */
dset->idcode.str[1] = 'I' ;
dset->idcode.str[2] = 'I' ;
MCW_hash_idcode( pathname , dset ) ; /* 06 May 2005 */
EDIT_dset_items( dset ,
ADN_prefix , prefix ,
ADN_datum_all , datum ,
ADN_nxyz , nxyz ,
ADN_xyzdel , dxyz ,
ADN_xyzorg , orgxyz ,
ADN_xyzorient , orixyz ,
ADN_malloc_type , DATABLOCK_MEM_MALLOC ,
ADN_view_type , iview ,
ADN_type , (statcode != 0) ? HEAD_FUNC_TYPE
: HEAD_ANAT_TYPE ,
ADN_none ) ;
/* copy transformation matrix to dataset structure */
/* moved after setting grid 4 Apr 2014 [rickr,drg] */
dset->daxes->ijk_to_dicom_real = ijk_to_dicom44;
/* not a time dependent dataset */
if( ntt < 2 ){
EDIT_dset_items( dset ,
ADN_nvals , nbuc ,
ADN_datum_all , datum ,
ADN_func_type , (statcode != 0) ? FUNC_BUCK_TYPE
: ANAT_BUCK_TYPE ,
ADN_none ) ;
} else { /* is a time dependent dataset */
if( nim->time_units == NIFTI_UNITS_MSEC ){
nim->dt *= 0.001 ;
nim->toffset *= 0.001 ;
} else if( nim->time_units == NIFTI_UNITS_USEC ){
nim->dt *= 1.e-6 ;
nim->toffset *= 1.e-6 ;
}
EDIT_dset_items( dset ,
ADN_nvals , ntt ,
ADN_ntt , ntt ,
ADN_datum_all , datum ,
ADN_ttorg , nim->toffset , /* 12 Oct 2007 [rickr] */
ADN_ttdel , nim->dt ,
ADN_ttdur , 0.0 ,
ADN_tunits , UNITS_SEC_TYPE ,
ADN_func_type , (statcode != 0) ? FUNC_FIM_TYPE
: ANAT_EPI_TYPE ,
ADN_none ) ;
/* if present, add stuff about the slice-timing offsets */
if( nim->slice_dim == 3 && /* AFNI can only deal with */
nim->slice_code > 0 && /* slice timing offsets */
nim->slice_duration > 0.0 && /* along the k-axis of */
nim->slice_start >= 0 && /* the dataset volume */
nim->slice_start < nim->nz &&
nim->slice_end > nim->slice_start &&
nim->slice_end < nim->nz ){
float *toff=(float *)calloc(sizeof(float),nim->nz) , tsl ;
int kk ;
if( nim->time_units == NIFTI_UNITS_MSEC ) nim->slice_duration *= 0.001;
else if( nim->time_units == NIFTI_UNITS_USEC ) nim->slice_duration *= 1.e-6;
/* set up slice time offsets in the divers orders */
switch( nim->slice_code ){
case NIFTI_SLICE_SEQ_INC:
tsl = 0.0 ;
for( kk=nim->slice_start ; kk <= nim->slice_end ; kk++ ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
break ;
case NIFTI_SLICE_SEQ_DEC:
tsl = 0.0 ;
for( kk=nim->slice_end ; kk >= nim->slice_end ; kk-- ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
break ;
case NIFTI_SLICE_ALT_INC:
tsl = 0.0 ;
for( kk=nim->slice_start ; kk <= nim->slice_end ; kk+=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
for( kk=nim->slice_start+1 ; kk <= nim->slice_end ; kk+=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
break ;
case NIFTI_SLICE_ALT_INC2:
tsl = 0.0 ;
for( kk=nim->slice_start+1 ; kk <= nim->slice_end ; kk+=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
for( kk=nim->slice_start ; kk <= nim->slice_end ; kk+=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
break ;
case NIFTI_SLICE_ALT_DEC:
tsl = 0.0 ;
for( kk=nim->slice_end ; kk >= nim->slice_start ; kk-=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
for( kk=nim->slice_end-1 ; kk >= nim->slice_start ; kk-=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
break ;
case NIFTI_SLICE_ALT_DEC2:
tsl = 0.0 ;
for( kk=nim->slice_end-1 ; kk >= nim->slice_start ; kk-=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
for( kk=nim->slice_end ; kk >= nim->slice_start ; kk-=2 ){
toff[kk] = tsl ; tsl += nim->slice_duration ;
}
break ;
}
EDIT_dset_items( dset ,
ADN_nsl , nim->nz ,
ADN_zorg_sl , orgxyz.xyz[2] ,
ADN_dz_sl , dxyz.xyz[2] ,
ADN_toff_sl , toff ,
ADN_none ) ;
free(toff) ;
} /* end of slice timing stuff */
} /* end of 3D+time dataset stuff */
/* set atlas space based on NIFTI s/qform code */
NIFTI_code_to_space(form_code,dset);
/* add statistics, if present */
if( statcode != 0 ){
for( ibr=0 ; ibr < nvals ; ibr++ )
EDIT_STATAUX4(dset,ibr,statcode,nim->intent_p1,nim->intent_p2,nim->intent_p3,0) ;
}
/*-- flag to read data from disk using NIFTI functions --*/
dset->dblk->diskptr->storage_mode = STORAGE_BY_NIFTI ;
strcpy( dset->dblk->diskptr->brick_name , pathname ) ;
dset->dblk->diskptr->byte_order = nim->byteorder ;
#if 0
for( ibr=0 ; ibr < nvals ; ibr++ ){ /* make sub-brick labels */
sprintf(prefix,"%s[%d]",tname,ibr) ;
EDIT_BRICK_LABEL( dset , ibr , prefix ) ;
}
#endif
/** 10 May 2005: see if there is an AFNI extension;
if so, load attributes from it and
then edit the dataset appropriately **/
{ int ee ; /* extension index */
/* scan extension list to find the first AFNI extension */
for( ee=0 ; ee < nim->num_ext ; ee++ )
if( nim->ext_list[ee].ecode == NIFTI_ECODE_AFNI &&
nim->ext_list[ee].esize > 32 &&
nim->ext_list[ee].edata != NULL ) break ;
/* if found an AFNI extension ... */
if( ee < nim->num_ext ){
char *buf = nim->ext_list[ee].edata , *rhs , *cpt ;
int nbuf = nim->ext_list[ee].esize - 8 ;
NI_stream ns ;
void *nini ;
NI_group *ngr , *nngr ;
/* if have data, it's long enough, and starts properly, then ... */
if( buf != NULL && nbuf > 32 && strncmp(buf,"<?xml",5)==0 ){
if( buf[nbuf-1] != '\0' ) buf[nbuf-1] = '\0' ; /* for safety */
cpt = strstr(buf,"?>") ; /* find XML prolog close */
if( cpt != NULL ){ /* if found it, then ... */
ns = NI_stream_open( "str:" , "r" ) ;
NI_stream_setbuf( ns , cpt+2 ) ; /* start just after prolog */
nini = NI_read_element(ns,1) ; /* get root element */
NI_stream_close(ns) ;
if( NI_element_type(nini) == NI_GROUP_TYPE ){ /* must be a group */
ngr = (NI_group *)nini ;
if( strcmp(ngr->name,"AFNI_attributes") == 0 ){ /* root is OK */
nngr = ngr ;
} else { /* search in group for proper element */
int nn ; void **nnini ;
nn = NI_search_group_deep( ngr , "AFNI_attributes" , &nnini ) ;
if( nn <= 0 ) nngr = NULL ;
else { nngr = (NI_group *)nnini[0]; NI_free(nnini); }
}
if( NI_element_type(nngr) == NI_GROUP_TYPE ){ /* have good name */
rhs = NI_get_attribute( nngr , "self_idcode" ) ;
if( rhs == NULL )
rhs = NI_get_attribute( nngr , "AFNI_idcode" ) ;
if( rhs != NULL ) /* set dataset ID code from XML attribute */
MCW_strncpy( dset->idcode.str , rhs , MCW_IDSIZE ) ;
rhs = NI_get_attribute( nngr , "NIfTI_nums" ) ; /* check if */
if( rhs != NULL ){ /* dataset dimensions */
char buf[128] ; /* were altered */
sprintf(buf,"%ld,%ld,%ld,%ld,%ld,%d" , /* 12 May 2005 */
nim->nx, nim->ny, nim->nz, nim->nt, nim->nu, nim->datatype );
if( strcmp(buf,rhs) != 0 ){
static int nnn=0 ;
if(nnn==0){fprintf(stderr,"\n"); nnn=1;}
fprintf(stderr,
"** WARNING: NIfTI file %s dimensions altered since "
"AFNI extension was added\n",pathname ) ;
}
}
THD_dblkatr_from_niml( nngr , dset->dblk ); /* load attributes */
THD_datablock_apply_atr( dset ) ; /* apply to dataset struct */
}
NI_free_element( ngr ) ; /* get rid of the root element */
} /* end of if found a group element at the root */
} /* end of if extension data array had an XML prolog close */
} /* end of if had a good extension data array */
} /* end of if had an AFNI extension */
} /* end of processing extensions */
/* return unpopulated dataset */
nifti_image_free(nim) ; RETURN(dset) ;
}
