1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.19 2000/06/07 00:59:38 kevin Exp $
7 ** Revision 1.19 2000/06/07 00:59:38 kevin
10 ** Revision 1.18 2000/06/05 01:32:45 kevin
11 ** Added C++ compatibility
13 ** Revision 1.17 2000/06/03 06:29:08 kevin
14 ** *** empty log message ***
16 ** Revision 1.16 2000/05/24 22:48:17 kevin
17 ** First functional version of SDF library for X-window
19 ** Revision 1.15 2000/05/16 04:33:17 kevin
20 ** Updated documentation
22 ** Revision 1.14 2000/05/11 14:07:00 kevin
23 ** Added support for Windows NT
25 ** Revision 1.13 2000/05/08 20:00:48 kevin
28 ** Revision 1.12 2000/05/07 12:46:19 kevin
29 ** made c++ compatible
31 ** Revision 1.11 2000/05/05 02:37:31 kevin
32 ** renamed phmelm to pelm
34 ** Revision 1.10 2000/05/04 18:16:34 kevin
35 ** renamed filter definitions
37 ** Revision 1.9 2000/05/04 04:29:18 kevin
38 ** *** empty log message ***
40 ** Revision 1.8 2000/05/04 04:25:55 kevin
41 ** Renamed phantom and phantom-element functions/variables
43 ** Revision 1.7 2000/05/03 19:51:41 kevin
44 ** function renaming for phantoms and phantom elements
46 ** Revision 1.6 2000/05/03 08:49:49 kevin
49 ** Revision 1.5 2000/05/02 20:00:25 kevin
50 ** *** empty log message ***
52 ** Revision 1.4 2000/05/02 15:31:39 kevin
55 ** Revision 1.3 2000/04/29 23:24:29 kevin
56 ** *** empty log message ***
58 ** Revision 1.2 2000/04/28 14:14:16 kevin
59 ** *** empty log message ***
61 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
62 ** Initial CVS import for first public release
66 ** This program is free software; you can redistribute it and/or modify
67 ** it under the terms of the GNU General Public License (version 2) as
68 ** published by the Free Software Foundation.
70 ** This program is distributed in the hope that it will be useful,
71 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
72 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
73 ** GNU General Public License for more details.
75 ** You should have received a copy of the GNU General Public License
76 ** along with this program; if not, write to the Free Software
77 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
78 ******************************************************************************/
80 /* ir.h Header File for Image Reconstruction System
81 * Programmer: Kevin Rosenberg
82 * Date Started: 7-1-84
89 #define MPI_MAX_PROCESS 128
94 int base_local_work_units;
95 int remainder_work_units;
96 int local_work_units[MPI_MAX_PROCESS];
97 int start_work_unit[MPI_MAX_PROCESS];
101 extern struct mpi_ct_st mpi_ct;
102 void mpi_ct_calc_work_units(const unsigned int global_work_units);
107 int *b; /* Histogram array (# of elements in each bin) */
108 int nbin; /* Number of histogram bins */
109 double xmin, xmax, xinc; /* Limits of histogram boundaries */
112 typedef struct histo_st HISTOGRAM;
114 /*---------------------------------------------------------------------------*/
116 static const int POINTS_PER_CIRCLE=90;
119 typedef FMTX_2D IMAGE_ARRAY; /* use 2d floating point matrix */
120 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
123 IMAGE_ARRAY v; /* values of voxels in matrix form */
124 SDF_2D *dfp_2d; /* Pointer to disk image file */
125 int nx, ny; /* size of voxel matrix */
126 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
127 char remark[MAXREMARK+1]; /* description of voxel data */
128 float calctime; /* time to calculate voxels in seconds */
130 typedef struct image_st IMAGE;
141 PElmType type; /* pelm type (box, ellipse, etc) */
142 double atten; /* X-ray attenuation coefficient */
143 double cx,cy; /* center of pelm */
144 double u,v; /* size of pelm */
145 double rot; /* pelm rotation angle (in radians) */
146 double *x, *y; /* ptr to array of points in obj world coord */
147 int pts; /* number of points in outline arrays */
148 double xmin, xmax, ymin, ymax; /* pelm limits */
149 double radius; /* " */
150 GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
151 GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
152 struct pelm_st *next; /* pointer to next pelm in phantom */
154 typedef struct pelm_st PELM;
157 P_PELMS, /* Phantom made of Pelms */
158 P_UNIT_PULSE, /* Special phantom, not made of pelms */
159 P_FILTER /* defined only by this type */
162 struct phm_st { /* Phantom structure */
163 PELM *pelm_list; /* pelm linked-list */
165 int n_pelm; /* number of pelms in phantom */
166 double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
167 double radius; /* " " */
169 typedef struct phm_st PHANTOM;
172 /*----------------------------------------------------------------------*/
174 /*----------------------------------------------------------------------*/
176 /* Ray sums are collected along an array of ndet detectors. The data
177 * for these detectors is stored in the structure DETECTARRAY
180 typedef float DETECT_TYPE;
183 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
184 int ndet; /* Number of detectors in array */
185 double view_angle; /* View angle in radians */
187 typedef struct detarray_st DETARRAY;
197 ScannerGeometry geometry; /* Geometry of detectory */
198 int ndet; /* Number of detectors in array */
199 int nview; /* Number of rotated views */
200 int nsample; /* Number of rays per detector */
201 double detlen; /* Total length of detector array */
202 double rotlen; /* Rotation angle length in radians (norm 2PI) */
203 double det_inc; /* Increment between centers of detectors */
204 double rot_inc; /* Increment in rotation angle between views */
205 double radius; /* Radius of rotation. Distance from */
206 /* center of phm to center of det */
207 double phmlen; /* Maximum Length of phantom or area of interest */
209 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
210 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
211 double angle; /* Starting angle */
214 typedef struct detector_st DETECTOR;
217 int fd; /* Disk file descriptor */
218 int file_mode; /* Current file mode (read or write) */
219 int header_size; /* Size of disk file header */
220 int geometry; /* Geometry of scanner */
221 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
223 char remark[MAXREMARK+1]; /* description of raysum data */
224 double calctime; /* time required to calculate raysums */
226 int ndet; /* number of detectors in array */
227 int nview; /* number of rotated views */
228 double rot_start; /* starting view rotation */
229 double rot_inc; /* angle between rotations */
230 double det_start; /* distance of beginning detector to center */
232 double det_inc; /* increment between detectors */
233 double phmlen; /* Length of PHANTOM edge (phm is square) */
235 typedef struct raysum_st RAYSUM;
237 /*----------------------------------------------------------------------*/
239 /*----------------------------------------------------------------------*/
241 /* Codes for Coordinate Types */
242 /* Defines coords for pelm_is_point_inside() */
245 PELM_COORD, /* Normalized Pelm Coordinates */
246 PHM_COORD /* User's phantom Coordinates */
249 /* Codes for Filter types */
251 typedef enum { /* filter types for filter_generate() */
257 FILTER_ABS_BANDLIMIT, /* filter times |x| */
259 FILTER_ABS_G_HAMMING,
264 /* function domains */
266 static const char D_FREQ_STR[]= "freq";
267 static const char D_SPATIAL_STR[]= "spatial";
275 FUNC_EVEN = 1, /* function types, f[-n] = f[n] */
276 FUNC_ODD, /* f[-n] = -f[n] */
277 FUNC_BOTH /* function has both odd & even components */
280 /* interpolation methods */
281 #undef HAVE_BSPLINE_INTERP
282 typedef enum { /* Interpolation methods */
283 I_NEAREST = 1, /* Nearest neighbor */
284 #if HAVE_BSPLINE_INTERP
286 I_1BSPLINE, /* 1st order B-Spline */
290 I_LINEAR /* Linear interpolation */
293 /* Constants for sizing PHANTOM */
295 static const double PERCENT_PHM_SIZE_INCR=0.0; /* Fractional increase in phantom limits compared to pelm size */
296 static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
298 static const char O_TRACE_NONE_STR[]= "none";
299 static const char O_TRACE_TEXT_STR[]= "text";
300 static const char O_TRACE_PHM_STR[]= "phm";
301 static const char O_TRACE_RAYS_STR[]= "rays";
302 static const char O_TRACE_PLOT_STR[]= "plot";
303 static const char O_TRACE_CLIPPING_STR[]= "clipping";
306 TRACE_NONE, /* No tracing */
307 TRACE_TEXT, /* Minimal status */
308 TRACE_PHM, /* Show phantom */
309 TRACE_RAYS, /* Show all rays */
310 TRACE_PLOT, /* Plot raysums */
311 TRACE_CLIPPING /* Plot clipping */
315 O_PHM_HERMAN, /* Herman head phantom */
316 O_PHM_ROWLAND, /* Rowland head phantom */
317 O_PHM_BROWLAND, /* Bordered Rowland head phantom */
318 O_PHM_UNITPULSE /* Unit pulse phantom */
321 static const char O_PHM_HERMAN_STR[]= "herman";
322 static const char O_PHM_ROWLAND_STR[]= "rowland";
323 static const char O_PHM_BROWLAND_STR[]= "browland";
324 static const char O_PHM_UNITPULSE_STR[]= "unitpulse";
326 static const char O_INTERP_NEAREST_STR[]= "nearest";
327 static const char O_INTERP_LINEAR_STR[]= "linear";
328 static const char O_INTERP_BSPLINE_STR[]= "bspline";
330 static const char O_FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
331 static const char O_FILTER_ABS_SINC_STR[]= "abs_sinc";
332 static const char O_FILTER_ABS_COS_STR[]= "abs_cos";
333 static const char O_FILTER_ABS_HAMMING_STR[]= "abs_hamming";
334 static const char O_FILTER_SHEPP_STR[]= "shepp";
335 static const char O_FILTER_BANDLIMIT_STR[]= "bandlimit";
336 static const char O_FILTER_SINC_STR[]= "sinc";
337 static const char O_FILTER_COS_STR[]= "cos";
338 static const char O_FILTER_HAMMING_STR[]= "hamming";
339 static const char O_FILTER_TRIANGLE_STR[]= "triangle";
349 static const char O_BPROJ_TRIG_STR[]= "trig";
350 static const char O_BPROJ_TABLE_STR[]= "table";
351 static const char O_BPROJ_DIFF_STR[]= "diff";
352 static const char O_BPROJ_DIFF2_STR[]= "diff2";
353 static const char O_BPROJ_IDIFF2_STR[]= "idiff2";
355 const static int RAYSUM_TRACE_ROW_TITLE=1;
356 const static int RAYSUM_TRACE_ROW_TITLE2=2;
357 const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
358 const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
359 const static int RAYSUM_TRACE_ROW_SCATTER=8;
360 const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
361 const static int RAYSUM_TRACE_ROW_NDET=12;
362 const static int RAYSUM_TRACE_ROW_NVIEW=13;
363 const static int RAYSUM_TRACE_ROW_SAMPLES=14;
364 const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
365 const static int RAYSUM_TRACE_ROW_ATTEN=18;
368 /*************************************************************************
369 * FUNCTION DECLARATIONS
370 ************************************************************************/
374 #endif /* __cplusplus */
376 void usage (const char *program);
378 /* From reconstr.c */
379 IMAGE *image_reconst (IMAGE *im, RAYSUM *rs, const FilterType filt_type, double filt_param, InterpolationType interp_type, int interp_param, const BackprojType backproj_type, int const ir_trace);
382 void backproj_init (const RAYSUM *rs, IMAGE *im, const BackprojType bproj_method);
383 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
384 const int interp_type, const int bproj_method);
385 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
387 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
388 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
389 const double view_angle, const int interp_type);
390 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
391 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
392 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
393 const double view_angle, const int interp_type);
394 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
395 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
396 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
397 const double view_angle, const int interp_type);
398 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
399 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
400 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
401 const double view_angle, const int interp_type);
402 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
403 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
404 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
405 const double view_angle, const int interp_type);
406 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
407 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
408 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
409 const double view_angle, const int interp_type);
410 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
413 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
416 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const FunctionSymmetry func_type);
417 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
420 int phm_add_pelm_kb(PHANTOM *phm);
421 PHANTOM *phm_select(void);
422 int interpolation_select(void);
423 int filter_select(double *filter_param);
426 double *filter_generate(const FilterType filt_type, double bw, double xmin, double xmax, int n, double param, const DomainType domain, int numint);
427 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
428 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
429 double filter_frequency_response(int filt_type, double u, double bw, double param);
430 double sinc(double x, double mult);
431 double integral_abscos(double u, double w);
434 IMAGE *image_create(const char *fname, const int nx, const int ny);
435 int image_clear(IMAGE *im);
436 int image_save(IMAGE *im);
437 IMAGE *image_load(const char *fname);
438 void image_filter_response(IMAGE *im, const DomainType domain, double bw, const FilterType filt_type, double filt_param, const int opt_trace);
439 int image_display (const IMAGE *im);
440 int image_display_scale (const IMAGE *im, const int scale, const double pmin, const double pmax);
443 int opt_set_trace(const char *optarg);
444 const char *name_of_phantom(const int phmid);
445 int opt_set_phantom(const char *optarg);
446 int opt_set_interpolation(const char *optarg);
447 const char *name_of_interpolation(int interp_type);
448 int opt_set_filter(const char *optarg);
449 const char *name_of_filter(const int filter);
450 DomainType opt_set_filter_domain(const char *optarg);
451 const char *name_of_filter_domain(const DomainType domain);
452 int opt_set_backproj(const char *optarg);
453 const char *name_of_backproj(const BackprojType backproj);
456 PHANTOM *phm_create(const int phmid);
457 PHANTOM *phm_create_from_file(const char *fname);
458 PHANTOM *phm_init(void);
459 void phm_free (PHANTOM *phm);
460 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
461 void phm_add_pelm (PHANTOM *phm, const char *type, const double cx, const double cy,
462 const double u, const double v, const double rot, const double atten);
463 int pelm_make_points(PELM *obj);
464 void pelm_make_xform (PELM *obj);
465 PELM *pelm_alloc(void);
466 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
467 const double r, const double start, const double stop);
468 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
469 int circle_pts(double theta);
470 void phm_print(PHANTOM *phm);
472 void phm_show(const PHANTOM *phm);
473 void phm_draw(const PHANTOM *phm);
477 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
478 const int nsample, const int trace);
479 int pelm_is_point_inside(PELM *obj, const double x, const double y, const CoordType coord_type);
482 void phm_std_herman (PHANTOM *phm);
483 void phm_std_rowland (PHANTOM *phm);
484 void phm_std_rowland_bordered (PHANTOM *phm);
487 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
488 void rayview(const PHANTOM *phm, DETARRAY *darray, const DETECTOR *det, const double xd1, const double yd1, const double xd2, const double yd2, const double xs1, const double ys1, const double xs2, const double ys2, const int unit_pulse);
489 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
490 double pelm_ray_attenuation (PELM *pelm, const double x1, const double y1, const double x2, const double y2);
491 int pelm_clip_line (const PELM *pelm, double *x1, double *y1, double *x2, double *y2);
492 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
495 DETECTOR *detector_create(const PHANTOM *phm, int geometry, int ndet, int nview, int nsample, const double rot_anglen);
496 void detector_free(DETECTOR *det);
499 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
500 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
501 RAYSUM *raysum_open(const char *filename);
502 void raysum_alloc_views(RAYSUM *rs);
503 void raysum_free(RAYSUM *rs);
504 int raysum_is_open(RAYSUM *rs);
505 int raysum_close(RAYSUM *rs);
506 int raysum_read_header(RAYSUM *rs);
507 int raysum_write_header(RAYSUM *rs);
508 int raysum_read(RAYSUM *rs);
509 int raysum_write(RAYSUM *rs);
510 DETARRAY *detarray_alloc(const int n);
511 void detarray_free(DETARRAY *darray);
512 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
513 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
514 int raysum_print(const RAYSUM *rs);
518 #endif /* __cplusplus */