1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.18 2000/06/05 01:32:45 kevin Exp $
7 ** Revision 1.18 2000/06/05 01:32:45 kevin
8 ** Added C++ compatibility
10 ** Revision 1.17 2000/06/03 06:29:08 kevin
11 ** *** empty log message ***
13 ** Revision 1.16 2000/05/24 22:48:17 kevin
14 ** First functional version of SDF library for X-window
16 ** Revision 1.15 2000/05/16 04:33:17 kevin
17 ** Updated documentation
19 ** Revision 1.14 2000/05/11 14:07:00 kevin
20 ** Added support for Windows NT
22 ** Revision 1.13 2000/05/08 20:00:48 kevin
25 ** Revision 1.12 2000/05/07 12:46:19 kevin
26 ** made c++ compatible
28 ** Revision 1.11 2000/05/05 02:37:31 kevin
29 ** renamed phmelm to pelm
31 ** Revision 1.10 2000/05/04 18:16:34 kevin
32 ** renamed filter definitions
34 ** Revision 1.9 2000/05/04 04:29:18 kevin
35 ** *** empty log message ***
37 ** Revision 1.8 2000/05/04 04:25:55 kevin
38 ** Renamed phantom and phantom-element functions/variables
40 ** Revision 1.7 2000/05/03 19:51:41 kevin
41 ** function renaming for phantoms and phantom elements
43 ** Revision 1.6 2000/05/03 08:49:49 kevin
46 ** Revision 1.5 2000/05/02 20:00:25 kevin
47 ** *** empty log message ***
49 ** Revision 1.4 2000/05/02 15:31:39 kevin
52 ** Revision 1.3 2000/04/29 23:24:29 kevin
53 ** *** empty log message ***
55 ** Revision 1.2 2000/04/28 14:14:16 kevin
56 ** *** empty log message ***
58 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
59 ** Initial CVS import for first public release
63 ** This program is free software; you can redistribute it and/or modify
64 ** it under the terms of the GNU General Public License (version 2) as
65 ** published by the Free Software Foundation.
67 ** This program is distributed in the hope that it will be useful,
68 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
69 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
70 ** GNU General Public License for more details.
72 ** You should have received a copy of the GNU General Public License
73 ** along with this program; if not, write to the Free Software
74 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
75 ******************************************************************************/
77 /* ir.h Header File for Image Reconstruction System
78 * Programmer: Kevin Rosenberg
79 * Date Started: 7-1-84
87 #endif /* __cplusplus */
90 #define MPI_MAX_PROCESS 128
95 int base_local_work_units;
96 int remainder_work_units;
97 int local_work_units[MPI_MAX_PROCESS];
98 int start_work_unit[MPI_MAX_PROCESS];
102 extern struct mpi_ct_st mpi_ct;
103 void mpi_ct_calc_work_units(const unsigned int global_work_units);
108 int *b; /* Histogram array (# of elements in each bin) */
109 int nbin; /* Number of histogram bins */
110 double xmin, xmax, xinc; /* Limits of histogram boundaries */
113 typedef struct histo_st HISTOGRAM;
115 /*---------------------------------------------------------------------------*/
117 static const int POINTS_PER_CIRCLE=90;
120 typedef FMTX_2D IMAGE_ARRAY; /* use 2d floating point matrix */
121 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
124 IMAGE_ARRAY v; /* values of voxels in matrix form */
125 SDF_2D *dfp_2d; /* Pointer to disk image file */
126 int nx, ny; /* size of voxel matrix */
127 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
128 char remark[MAXREMARK+1]; /* description of voxel data */
129 float calctime; /* time to calculate voxels in seconds */
131 typedef struct image_st IMAGE;
142 PElmType type; /* pelm type (box, ellipse, etc) */
143 double atten; /* X-ray attenuation coefficient */
144 double cx,cy; /* center of pelm */
145 double u,v; /* size of pelm */
146 double rot; /* pelm rotation angle (in radians) */
147 double *x, *y; /* ptr to array of points in obj world coord */
148 int pts; /* number of points in outline arrays */
149 double xmin, xmax, ymin, ymax; /* pelm limits */
150 double radius; /* " */
151 GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
152 GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
153 struct pelm_st *next; /* pointer to next pelm in phantom */
155 typedef struct pelm_st PELM;
158 P_PELMS, /* Phantom made of Pelms */
159 P_UNIT_PULSE, /* Special phantom, not made of pelms */
160 P_FILTER /* defined only by this type */
163 struct phm_st { /* Phantom structure */
164 PELM *pelm_list; /* pelm linked-list */
166 int n_pelm; /* number of pelms in phantom */
167 double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
168 double radius; /* " " */
170 typedef struct phm_st PHANTOM;
173 /*----------------------------------------------------------------------*/
175 /*----------------------------------------------------------------------*/
177 /* Ray sums are collected along an array of ndet detectors. The data
178 * for these detectors is stored in the structure DETECTARRAY
181 typedef float DETECT_TYPE;
184 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
185 int ndet; /* Number of detectors in array */
186 double view_angle; /* View angle in radians */
188 typedef struct detarray_st DETARRAY;
198 ScannerGeometry geometry; /* Geometry of detectory */
199 int ndet; /* Number of detectors in array */
200 int nview; /* Number of rotated views */
201 int nsample; /* Number of rays per detector */
202 double detlen; /* Total length of detector array */
203 double rotlen; /* Rotation angle length in radians (norm 2PI) */
204 double det_inc; /* Increment between centers of detectors */
205 double rot_inc; /* Increment in rotation angle between views */
206 double radius; /* Radius of rotation. Distance from */
207 /* center of phm to center of det */
208 double phmlen; /* Maximum Length of phantom or area of interest */
210 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
211 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
212 double angle; /* Starting angle */
215 typedef struct detector_st DETECTOR;
218 int fd; /* Disk file descriptor */
219 int file_mode; /* Current file mode (read or write) */
220 int header_size; /* Size of disk file header */
221 int geometry; /* Geometry of scanner */
222 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
224 char remark[MAXREMARK+1]; /* description of raysum data */
225 double calctime; /* time required to calculate raysums */
227 int ndet; /* number of detectors in array */
228 int nview; /* number of rotated views */
229 double rot_start; /* starting view rotation */
230 double rot_inc; /* angle between rotations */
231 double det_start; /* distance of beginning detector to center */
233 double det_inc; /* increment between detectors */
234 double phmlen; /* Length of PHANTOM edge (phm is square) */
236 typedef struct raysum_st RAYSUM;
238 /*----------------------------------------------------------------------*/
240 /*----------------------------------------------------------------------*/
242 /* Codes for Coordinate Types */
243 /* Defines coords for pelm_is_point_inside() */
246 PELM_COORD, /* Normalized Pelm Coordinates */
247 PHM_COORD /* User's phantom Coordinates */
250 /* Codes for Filter types */
252 typedef enum { /* filter types for filter_generate() */
258 FILTER_ABS_BANDLIMIT, /* filter times |x| */
260 FILTER_ABS_G_HAMMING,
265 /* function domains */
267 static const char D_FREQ_STR[]= "freq";
268 static const char D_SPATIAL_STR[]= "spatial";
276 FUNC_EVEN, /* function types, f[-n] = f[n] */
277 FUNC_ODD, /* f[-n] = -f[n] */
278 FUNC_BOTH /* function has both odd & even components */
281 /* interpolation methods */
282 #undef HAVE_BSPLINE_INTERP
283 typedef enum { /* Interpolation methods */
284 I_NEAREST, /* Nearest neighbor */
285 #if HAVE_BSPLINE_INTERP
287 I_1BSPLINE, /* 1st order B-Spline */
291 I_LINEAR /* Linear interpolation */
294 /* Constants for sizing PHANTOM */
296 static const double PERCENT_PHM_SIZE_INCR=0.0; /* Fractional increase in phantom limits compared to pelm size */
297 static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
299 static const char O_TRACE_NONE_STR[]= "none";
300 static const char O_TRACE_TEXT_STR[]= "text";
301 static const char O_TRACE_PHM_STR[]= "phm";
302 static const char O_TRACE_RAYS_STR[]= "rays";
303 static const char O_TRACE_PLOT_STR[]= "plot";
304 static const char O_TRACE_CLIPPING_STR[]= "clipping";
307 TRACE_NONE, /* No tracing */
308 TRACE_TEXT, /* Minimal status */
309 TRACE_PHM, /* Show phantom */
310 TRACE_RAYS, /* Show all rays */
311 TRACE_PLOT, /* Plot raysums */
312 TRACE_CLIPPING /* Plot clipping */
316 O_PHM_HERMAN, /* Herman head phantom */
317 O_PHM_ROWLAND, /* Rowland head phantom */
318 O_PHM_BROWLAND, /* Bordered Rowland head phantom */
319 O_PHM_UNITPULSE /* Unit pulse phantom */
322 static const char O_PHM_HERMAN_STR[]= "herman";
323 static const char O_PHM_ROWLAND_STR[]= "rowland";
324 static const char O_PHM_BROWLAND_STR[]= "browland";
325 static const char O_PHM_UNITPULSE_STR[]= "unitpulse";
327 static const char O_INTERP_NEAREST_STR[]= "nearest";
328 static const char O_INTERP_LINEAR_STR[]= "linear";
329 static const char O_INTERP_BSPLINE_STR[]= "bspline";
331 static const char O_FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
332 static const char O_FILTER_ABS_SINC_STR[]= "abs_sinc";
333 static const char O_FILTER_ABS_COS_STR[]= "abs_cos";
334 static const char O_FILTER_ABS_HAMMING_STR[]= "abs_hamming";
335 static const char O_FILTER_SHEPP_STR[]= "shepp";
336 static const char O_FILTER_BANDLIMIT_STR[]= "bandlimit";
337 static const char O_FILTER_SINC_STR[]= "sinc";
338 static const char O_FILTER_COS_STR[]= "cos";
339 static const char O_FILTER_HAMMING_STR[]= "hamming";
340 static const char O_FILTER_TRIANGLE_STR[]= "triangle";
350 static const char O_BPROJ_TRIG_STR[]= "trig";
351 static const char O_BPROJ_TABLE_STR[]= "table";
352 static const char O_BPROJ_DIFF_STR[]= "diff";
353 static const char O_BPROJ_DIFF2_STR[]= "diff2";
354 static const char O_BPROJ_IDIFF2_STR[]= "idiff2";
356 const static int RAYSUM_TRACE_ROW_TITLE=1;
357 const static int RAYSUM_TRACE_ROW_TITLE2=2;
358 const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
359 const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
360 const static int RAYSUM_TRACE_ROW_SCATTER=8;
361 const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
362 const static int RAYSUM_TRACE_ROW_NDET=12;
363 const static int RAYSUM_TRACE_ROW_NVIEW=13;
364 const static int RAYSUM_TRACE_ROW_SAMPLES=14;
365 const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
366 const static int RAYSUM_TRACE_ROW_ATTEN=18;
369 /*************************************************************************
370 * FUNCTION DECLARATIONS
371 ************************************************************************/
373 void usage (const char *program);
375 /* From reconstr.c */
376 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);
379 void backproj_init (const RAYSUM *rs, IMAGE *im, const BackprojType bproj_method);
380 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
381 const int interp_type, const int bproj_method);
382 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
384 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
385 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
386 const double view_angle, const int interp_type);
387 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
388 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
389 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
390 const double view_angle, const int interp_type);
391 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
392 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
393 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
394 const double view_angle, const int interp_type);
395 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
396 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
397 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
398 const double view_angle, const int interp_type);
399 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
400 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
401 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
402 const double view_angle, const int interp_type);
403 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
404 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
405 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
406 const double view_angle, const int interp_type);
407 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
410 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
413 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const FunctionSymmetry func_type);
414 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
417 int phm_add_pelm_kb(PHANTOM *phm);
418 PHANTOM *phm_select(void);
419 int interpolation_select(void);
420 int filter_select(double *filter_param);
423 double *filter_generate(const FilterType filt_type, double bw, double xmin, double xmax, int n, double param, const DomainType domain, int numint);
424 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
425 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
426 double filter_frequency_response(int filt_type, double u, double bw, double param);
427 double sinc(double x, double mult);
428 double integral_abscos(double u, double w);
431 IMAGE *image_create(const char *fname, const int nx, const int ny);
432 int image_clear(IMAGE *im);
433 int image_save(IMAGE *im);
434 IMAGE *image_load(const char *fname);
435 void image_filter_response(IMAGE *im, const DomainType domain, double bw, const FilterType filt_type, double filt_param, const int opt_trace);
436 int image_display (const IMAGE *im);
437 int image_display_scale (const IMAGE *im, const int scale, const double pmin, const double pmax);
440 int opt_set_trace(const char *optarg);
441 const char *name_of_phantom(const int phmid);
442 int opt_set_phantom(const char *optarg);
443 int opt_set_interpolation(const char *optarg);
444 const char *name_of_interpolation(int interp_type);
445 int opt_set_filter(const char *optarg);
446 const char *name_of_filter(const int filter);
447 DomainType opt_set_filter_domain(const char *optarg);
448 const char *name_of_filter_domain(const DomainType domain);
449 int opt_set_backproj(const char *optarg);
450 const char *name_of_backproj(const BackprojType backproj);
453 PHANTOM *phm_create(const int phmid);
454 PHANTOM *phm_create_from_file(const char *fname);
455 PHANTOM *phm_init(void);
456 void phm_free (PHANTOM *phm);
457 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
458 void phm_add_pelm (PHANTOM *phm, const char *type, const double cx, const double cy,
459 const double u, const double v, const double rot, const double atten);
460 int pelm_make_points(PELM *obj);
461 void pelm_make_xform (PELM *obj);
462 PELM *pelm_alloc(void);
463 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
464 const double r, const double start, const double stop);
465 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
466 int circle_pts(double theta);
467 void phm_print(PHANTOM *phm);
469 void phm_show(const PHANTOM *phm);
470 void phm_draw(const PHANTOM *phm);
474 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
475 const int nsample, const int trace);
476 int pelm_is_point_inside(PELM *obj, const double x, const double y, const CoordType coord_type);
479 void phm_std_herman (PHANTOM *phm);
480 void phm_std_rowland (PHANTOM *phm);
481 void phm_std_rowland_bordered (PHANTOM *phm);
484 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
485 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);
486 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
487 double pelm_ray_attenuation (PELM *pelm, const double x1, const double y1, const double x2, const double y2);
488 int pelm_clip_line (const PELM *pelm, double *x1, double *y1, double *x2, double *y2);
489 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
492 DETECTOR *detector_create(const PHANTOM *phm, int geometry, int ndet, int nview, int nsample, const double rot_anglen);
493 void detector_free(DETECTOR *det);
496 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
497 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
498 RAYSUM *raysum_open(const char *filename);
499 void raysum_alloc_views(RAYSUM *rs);
500 void raysum_free(RAYSUM *rs);
501 int raysum_is_open(RAYSUM *rs);
502 int raysum_close(RAYSUM *rs);
503 int raysum_read_header(RAYSUM *rs);
504 int raysum_write_header(RAYSUM *rs);
505 int raysum_read(RAYSUM *rs);
506 int raysum_write(RAYSUM *rs);
507 DETARRAY *detarray_alloc(const int n);
508 void detarray_free(DETARRAY *darray);
509 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
510 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
511 int raysum_print(const RAYSUM *rs);
515 #endif /* __cplusplus */