1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.20 2000/06/07 02:30:27 kevin Exp $
7 ** Revision 1.20 2000/06/07 02:30:27 kevin
8 ** Added C++ image files
10 ** Revision 1.19 2000/06/07 00:59:38 kevin
13 ** Revision 1.18 2000/06/05 01:32:45 kevin
14 ** Added C++ compatibility
16 ** Revision 1.17 2000/06/03 06:29:08 kevin
17 ** *** empty log message ***
19 ** Revision 1.16 2000/05/24 22:48:17 kevin
20 ** First functional version of SDF library for X-window
22 ** Revision 1.15 2000/05/16 04:33:17 kevin
23 ** Updated documentation
25 ** Revision 1.14 2000/05/11 14:07:00 kevin
26 ** Added support for Windows NT
28 ** Revision 1.13 2000/05/08 20:00:48 kevin
31 ** Revision 1.12 2000/05/07 12:46:19 kevin
32 ** made c++ compatible
34 ** Revision 1.11 2000/05/05 02:37:31 kevin
35 ** renamed phmelm to pelm
37 ** Revision 1.10 2000/05/04 18:16:34 kevin
38 ** renamed filter definitions
40 ** Revision 1.9 2000/05/04 04:29:18 kevin
41 ** *** empty log message ***
43 ** Revision 1.8 2000/05/04 04:25:55 kevin
44 ** Renamed phantom and phantom-element functions/variables
46 ** Revision 1.7 2000/05/03 19:51:41 kevin
47 ** function renaming for phantoms and phantom elements
49 ** Revision 1.6 2000/05/03 08:49:49 kevin
52 ** Revision 1.5 2000/05/02 20:00:25 kevin
53 ** *** empty log message ***
55 ** Revision 1.4 2000/05/02 15:31:39 kevin
58 ** Revision 1.3 2000/04/29 23:24:29 kevin
59 ** *** empty log message ***
61 ** Revision 1.2 2000/04/28 14:14:16 kevin
62 ** *** empty log message ***
64 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
65 ** Initial CVS import for first public release
69 ** This program is free software; you can redistribute it and/or modify
70 ** it under the terms of the GNU General Public License (version 2) as
71 ** published by the Free Software Foundation.
73 ** This program is distributed in the hope that it will be useful,
74 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
75 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
76 ** GNU General Public License for more details.
78 ** You should have received a copy of the GNU General Public License
79 ** along with this program; if not, write to the Free Software
80 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
81 ******************************************************************************/
83 /* ir.h Header File for Image Reconstruction System
84 * Programmer: Kevin Rosenberg
85 * Date Started: 7-1-84
93 int *b; /* Histogram array (# of elements in each bin) */
94 int nbin; /* Number of histogram bins */
95 double xmin, xmax, xinc; /* Limits of histogram boundaries */
98 typedef struct histo_st HISTOGRAM;
100 /*---------------------------------------------------------------------------*/
102 static const int POINTS_PER_CIRCLE=90;
105 typedef FMTX_2D IMAGE_ARRAY; /* use 2d floating point matrix */
106 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
109 IMAGE_ARRAY v; /* values of voxels in matrix form */
110 SDF_2D *dfp_2d; /* Pointer to disk image file */
111 int nx, ny; /* size of voxel matrix */
112 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
113 char remark[MAXREMARK+1]; /* description of voxel data */
114 float calctime; /* time to calculate voxels in seconds */
116 typedef struct image_st IMAGE;
127 PElmType type; /* pelm type (box, ellipse, etc) */
128 double atten; /* X-ray attenuation coefficient */
129 double cx,cy; /* center of pelm */
130 double u,v; /* size of pelm */
131 double rot; /* pelm rotation angle (in radians) */
132 double *x, *y; /* ptr to array of points in obj world coord */
133 int pts; /* number of points in outline arrays */
134 double xmin, xmax, ymin, ymax; /* pelm limits */
135 double radius; /* " */
136 GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
137 GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
138 struct pelm_st *next; /* pointer to next pelm in phantom */
140 typedef struct pelm_st PELM;
143 P_PELMS, /* Phantom made of Pelms */
144 P_UNIT_PULSE, /* Special phantom, not made of pelms */
145 P_FILTER /* defined only by this type */
148 struct phm_st { /* Phantom structure */
149 PELM *pelm_list; /* pelm linked-list */
151 int n_pelm; /* number of pelms in phantom */
152 double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
153 double radius; /* " " */
155 typedef struct phm_st PHANTOM;
158 /*----------------------------------------------------------------------*/
160 /*----------------------------------------------------------------------*/
162 /* Ray sums are collected along an array of ndet detectors. The data
163 * for these detectors is stored in the structure DETECTARRAY
166 typedef float DETECT_TYPE;
169 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
170 int ndet; /* Number of detectors in array */
171 double view_angle; /* View angle in radians */
173 typedef struct detarray_st DETARRAY;
183 ScannerGeometry geometry; /* Geometry of detectory */
184 int ndet; /* Number of detectors in array */
185 int nview; /* Number of rotated views */
186 int nsample; /* Number of rays per detector */
187 double detlen; /* Total length of detector array */
188 double rotlen; /* Rotation angle length in radians (norm 2PI) */
189 double det_inc; /* Increment between centers of detectors */
190 double rot_inc; /* Increment in rotation angle between views */
191 double radius; /* Radius of rotation. Distance from */
192 /* center of phm to center of det */
193 double phmlen; /* Maximum Length of phantom or area of interest */
195 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
196 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
197 double angle; /* Starting angle */
200 typedef struct detector_st DETECTOR;
203 int fd; /* Disk file descriptor */
204 int file_mode; /* Current file mode (read or write) */
205 int header_size; /* Size of disk file header */
206 int geometry; /* Geometry of scanner */
207 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
209 char remark[MAXREMARK+1]; /* description of raysum data */
210 double calctime; /* time required to calculate raysums */
212 int ndet; /* number of detectors in array */
213 int nview; /* number of rotated views */
214 double rot_start; /* starting view rotation */
215 double rot_inc; /* angle between rotations */
216 double det_start; /* distance of beginning detector to center */
218 double det_inc; /* increment between detectors */
219 double phmlen; /* Length of PHANTOM edge (phm is square) */
221 typedef struct raysum_st RAYSUM;
223 /*----------------------------------------------------------------------*/
225 /*----------------------------------------------------------------------*/
227 /* Codes for Coordinate Types */
228 /* Defines coords for pelm_is_point_inside() */
231 PELM_COORD, /* Normalized Pelm Coordinates */
232 PHM_COORD /* User's phantom Coordinates */
235 /* Codes for Filter types */
237 typedef enum { /* filter types for filter_generate() */
243 FILTER_ABS_BANDLIMIT, /* filter times |x| */
245 FILTER_ABS_G_HAMMING,
250 /* function domains */
252 static const char D_FREQ_STR[]= "freq";
253 static const char D_SPATIAL_STR[]= "spatial";
261 FUNC_EVEN = 1, /* function types, f[-n] = f[n] */
262 FUNC_ODD, /* f[-n] = -f[n] */
263 FUNC_BOTH /* function has both odd & even components */
266 /* interpolation methods */
267 #undef HAVE_BSPLINE_INTERP
268 typedef enum { /* Interpolation methods */
269 I_NEAREST = 1, /* Nearest neighbor */
270 #if HAVE_BSPLINE_INTERP
272 I_1BSPLINE, /* 1st order B-Spline */
276 I_LINEAR /* Linear interpolation */
279 /* Constants for sizing PHANTOM */
281 static const double PERCENT_PHM_SIZE_INCR=0.0; /* Fractional increase in phantom limits compared to pelm size */
282 static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
284 static const char O_TRACE_NONE_STR[]= "none";
285 static const char O_TRACE_TEXT_STR[]= "text";
286 static const char O_TRACE_PHM_STR[]= "phm";
287 static const char O_TRACE_RAYS_STR[]= "rays";
288 static const char O_TRACE_PLOT_STR[]= "plot";
289 static const char O_TRACE_CLIPPING_STR[]= "clipping";
292 TRACE_NONE, /* No tracing */
293 TRACE_TEXT, /* Minimal status */
294 TRACE_PHM, /* Show phantom */
295 TRACE_RAYS, /* Show all rays */
296 TRACE_PLOT, /* Plot raysums */
297 TRACE_CLIPPING /* Plot clipping */
301 O_PHM_HERMAN, /* Herman head phantom */
302 O_PHM_ROWLAND, /* Rowland head phantom */
303 O_PHM_BROWLAND, /* Bordered Rowland head phantom */
304 O_PHM_UNITPULSE /* Unit pulse phantom */
307 static const char O_PHM_HERMAN_STR[]= "herman";
308 static const char O_PHM_ROWLAND_STR[]= "rowland";
309 static const char O_PHM_BROWLAND_STR[]= "browland";
310 static const char O_PHM_UNITPULSE_STR[]= "unitpulse";
312 static const char O_INTERP_NEAREST_STR[]= "nearest";
313 static const char O_INTERP_LINEAR_STR[]= "linear";
314 static const char O_INTERP_BSPLINE_STR[]= "bspline";
316 static const char O_FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
317 static const char O_FILTER_ABS_SINC_STR[]= "abs_sinc";
318 static const char O_FILTER_ABS_COS_STR[]= "abs_cos";
319 static const char O_FILTER_ABS_HAMMING_STR[]= "abs_hamming";
320 static const char O_FILTER_SHEPP_STR[]= "shepp";
321 static const char O_FILTER_BANDLIMIT_STR[]= "bandlimit";
322 static const char O_FILTER_SINC_STR[]= "sinc";
323 static const char O_FILTER_COS_STR[]= "cos";
324 static const char O_FILTER_HAMMING_STR[]= "hamming";
325 static const char O_FILTER_TRIANGLE_STR[]= "triangle";
335 static const char O_BPROJ_TRIG_STR[]= "trig";
336 static const char O_BPROJ_TABLE_STR[]= "table";
337 static const char O_BPROJ_DIFF_STR[]= "diff";
338 static const char O_BPROJ_DIFF2_STR[]= "diff2";
339 static const char O_BPROJ_IDIFF2_STR[]= "idiff2";
341 const static int RAYSUM_TRACE_ROW_TITLE=1;
342 const static int RAYSUM_TRACE_ROW_TITLE2=2;
343 const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
344 const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
345 const static int RAYSUM_TRACE_ROW_SCATTER=8;
346 const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
347 const static int RAYSUM_TRACE_ROW_NDET=12;
348 const static int RAYSUM_TRACE_ROW_NVIEW=13;
349 const static int RAYSUM_TRACE_ROW_SAMPLES=14;
350 const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
351 const static int RAYSUM_TRACE_ROW_ATTEN=18;
354 /*************************************************************************
355 * FUNCTION DECLARATIONS
356 ************************************************************************/
360 #endif /* __cplusplus */
363 #define MPI_MAX_PROCESS 128
368 int base_local_work_units;
369 int remainder_work_units;
370 int local_work_units[MPI_MAX_PROCESS];
371 int start_work_unit[MPI_MAX_PROCESS];
375 extern struct mpi_ct_st mpi_ct;
376 void mpi_ct_calc_work_units(const unsigned int global_work_units);
380 /* From reconstr.c */
381 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);
384 void backproj_init (const RAYSUM *rs, IMAGE *im, const BackprojType bproj_method);
385 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
386 const int interp_type, const int bproj_method);
387 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
389 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
390 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
391 const double view_angle, const int interp_type);
392 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
393 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
394 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
395 const double view_angle, const int interp_type);
396 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
397 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
398 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
399 const double view_angle, const int interp_type);
400 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
401 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
402 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
403 const double view_angle, const int interp_type);
404 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
405 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
406 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
407 const double view_angle, const int interp_type);
408 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
409 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
410 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
411 const double view_angle, const int interp_type);
412 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
415 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
418 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const FunctionSymmetry func_type);
419 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
422 int phm_add_pelm_kb(PHANTOM *phm);
423 PHANTOM *phm_select(void);
424 int interpolation_select(void);
425 int filter_select(double *filter_param);
428 double *filter_generate(const FilterType filt_type, double bw, double xmin, double xmax, int n, double param, const DomainType domain, int numint);
429 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
430 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
431 double filter_frequency_response(int filt_type, double u, double bw, double param);
432 double sinc(double x, double mult);
433 double integral_abscos(double u, double w);
436 IMAGE *image_create(const char *fname, const int nx, const int ny);
437 int image_clear(IMAGE *im);
438 int image_save(IMAGE *im);
439 IMAGE *image_load(const char *fname);
440 void image_filter_response(IMAGE *im, const DomainType domain, double bw, const FilterType filt_type, double filt_param, const int opt_trace);
441 int image_display (const IMAGE *im);
442 int image_display_scale (const IMAGE *im, const int scale, const double pmin, const double pmax);
445 int opt_set_trace(const char *optarg);
446 const char *name_of_phantom(const int phmid);
447 int opt_set_phantom(const char *optarg);
448 InterpolationType opt_set_interpolation(const char *optarg);
449 const char *name_of_interpolation(int interp_type);
450 FilterType opt_set_filter(const char *optarg);
451 const char *name_of_filter(const int filter);
452 DomainType opt_set_filter_domain(const char *optarg);
453 const char *name_of_filter_domain(const DomainType domain);
454 BackprojType opt_set_backproj(const char *optarg);
455 const char *name_of_backproj(const BackprojType backproj);
458 PHANTOM *phm_create(const int phmid);
459 PHANTOM *phm_create_from_file(const char *fname);
460 PHANTOM *phm_init(void);
461 void phm_free (PHANTOM *phm);
462 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
463 void phm_add_pelm (PHANTOM *phm, const char *type, const double cx, const double cy,
464 const double u, const double v, const double rot, const double atten);
465 int pelm_make_points(PELM *obj);
466 void pelm_make_xform (PELM *obj);
467 PELM *pelm_alloc(void);
468 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
469 const double r, const double start, const double stop);
470 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
471 int circle_pts(double theta);
472 void phm_print(PHANTOM *phm);
474 void phm_show(const PHANTOM *phm);
475 void phm_draw(const PHANTOM *phm);
479 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
480 const int nsample, const int trace);
481 int pelm_is_point_inside(PELM *obj, const double x, const double y, const CoordType coord_type);
484 void phm_std_herman (PHANTOM *phm);
485 void phm_std_rowland (PHANTOM *phm);
486 void phm_std_rowland_bordered (PHANTOM *phm);
489 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
490 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);
491 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
492 double pelm_ray_attenuation (PELM *pelm, const double x1, const double y1, const double x2, const double y2);
493 int pelm_clip_line (const PELM *pelm, double *x1, double *y1, double *x2, double *y2);
494 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
497 DETECTOR *detector_create(const PHANTOM *phm, int geometry, int ndet, int nview, int nsample, const double rot_anglen);
498 void detector_free(DETECTOR *det);
501 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
502 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
503 RAYSUM *raysum_open(const char *filename);
504 void raysum_alloc_views(RAYSUM *rs);
505 void raysum_free(RAYSUM *rs);
506 int raysum_is_open(RAYSUM *rs);
507 int raysum_close(RAYSUM *rs);
508 int raysum_read_header(RAYSUM *rs);
509 int raysum_write_header(RAYSUM *rs);
510 int raysum_read(RAYSUM *rs);
511 int raysum_write(RAYSUM *rs);
512 DETARRAY *detarray_alloc(const int n);
513 void detarray_free(DETARRAY *darray);
514 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
515 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
516 int raysum_print(const RAYSUM *rs);
520 #endif /* __cplusplus */