1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.15 2000/05/16 04:33:17 kevin Exp $
7 ** Revision 1.15 2000/05/16 04:33:17 kevin
8 ** Updated documentation
10 ** Revision 1.14 2000/05/11 14:07:00 kevin
11 ** Added support for Windows NT
13 ** Revision 1.13 2000/05/08 20:00:48 kevin
16 ** Revision 1.12 2000/05/07 12:46:19 kevin
17 ** made c++ compatible
19 ** Revision 1.11 2000/05/05 02:37:31 kevin
20 ** renamed phmelm to pelm
22 ** Revision 1.10 2000/05/04 18:16:34 kevin
23 ** renamed filter definitions
25 ** Revision 1.9 2000/05/04 04:29:18 kevin
26 ** *** empty log message ***
28 ** Revision 1.8 2000/05/04 04:25:55 kevin
29 ** Renamed phantom and phantom-element functions/variables
31 ** Revision 1.7 2000/05/03 19:51:41 kevin
32 ** function renaming for phantoms and phantom elements
34 ** Revision 1.6 2000/05/03 08:49:49 kevin
37 ** Revision 1.5 2000/05/02 20:00:25 kevin
38 ** *** empty log message ***
40 ** Revision 1.4 2000/05/02 15:31:39 kevin
43 ** Revision 1.3 2000/04/29 23:24:29 kevin
44 ** *** empty log message ***
46 ** Revision 1.2 2000/04/28 14:14:16 kevin
47 ** *** empty log message ***
49 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
50 ** Initial CVS import for first public release
54 ** This program is free software; you can redistribute it and/or modify
55 ** it under the terms of the GNU General Public License (version 2) as
56 ** published by the Free Software Foundation.
58 ** This program is distributed in the hope that it will be useful,
59 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
60 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
61 ** GNU General Public License for more details.
63 ** You should have received a copy of the GNU General Public License
64 ** along with this program; if not, write to the Free Software
65 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
66 ******************************************************************************/
68 /* ir.h Header File for Image Reconstruction System
69 * Programmer: Kevin Rosenberg
70 * Date Started: 7-1-84
78 #endif /* __cplusplus */
81 #define MPI_MAX_PROCESS 128
86 int base_local_work_units;
87 int remainder_work_units;
88 int local_work_units[MPI_MAX_PROCESS];
89 int start_work_unit[MPI_MAX_PROCESS];
93 extern struct mpi_ct_st mpi_ct;
94 void mpi_ct_calc_work_units(const unsigned int global_work_units);
99 int *b; /* Histogram array (# of elements in each bin) */
100 int nbin; /* Number of histogram bins */
101 double xmin, xmax, xinc; /* Limits of histogram boundaries */
104 typedef struct histo_st HISTOGRAM;
106 /*---------------------------------------------------------------------------*/
108 static const int POINTS_PER_CIRCLE=90;
111 typedef FMTX_2D IMAGE_ARRAY; /* use 2d floating point matrix */
112 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
115 IMAGE_ARRAY v; /* values of voxels in matrix form */
116 SDF_2D *dfp_2d; /* Pointer to disk image file */
117 int nx, ny; /* size of voxel matrix */
118 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
119 char remark[MAXREMARK+1]; /* description of voxel data */
120 float calctime; /* time to calculate voxels in seconds */
122 typedef struct image_st IMAGE;
133 PElmType type; /* pelm type (box, ellipse, etc) */
134 double atten; /* X-ray attenuation coefficient */
135 double cx,cy; /* center of pelm */
136 double u,v; /* size of pelm */
137 double rot; /* pelm rotation angle (in radians) */
138 double *x, *y; /* ptr to array of points in obj world coord */
139 int pts; /* number of points in outline arrays */
140 double xmin, xmax, ymin, ymax; /* pelm limits */
141 double radius; /* " */
142 GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
143 GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
144 struct pelm_st *next; /* pointer to next pelm in phantom */
146 typedef struct pelm_st PELM;
149 P_PELMS, /* Phantom made of Pelms */
150 P_UNIT_PULSE, /* Special phantom, not made of pelms */
151 P_FILTER /* defined only by this type */
154 struct phm_st { /* Phantom structure */
155 PELM *pelm_list; /* pelm linked-list */
157 int n_pelm; /* number of pelms in phantom */
158 double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
159 double radius; /* " " */
161 typedef struct phm_st PHANTOM;
164 /*----------------------------------------------------------------------*/
166 /*----------------------------------------------------------------------*/
168 /* Ray sums are collected along an array of ndet detectors. The data
169 * for these detectors is stored in the structure DETECTARRAY
172 typedef float DETECT_TYPE;
175 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
176 int ndet; /* Number of detectors in array */
177 double view_angle; /* View angle in radians */
179 typedef struct detarray_st DETARRAY;
189 ScannerGeometry geometry; /* Geometry of detectory */
190 int ndet; /* Number of detectors in array */
191 int nview; /* Number of rotated views */
192 int nsample; /* Number of rays per detector */
193 double detlen; /* Total length of detector array */
194 double rotlen; /* Rotation angle length in radians (norm 2PI) */
195 double det_inc; /* Increment between centers of detectors */
196 double rot_inc; /* Increment in rotation angle between views */
197 double radius; /* Radius of rotation. Distance from */
198 /* center of phm to center of det */
199 double phmlen; /* Maximum Length of phantom or area of interest */
201 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
202 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
203 double angle; /* Starting angle */
206 typedef struct detector_st DETECTOR;
209 int fd; /* Disk file descriptor */
210 int file_mode; /* Current file mode (read or write) */
211 int header_size; /* Size of disk file header */
212 int geometry; /* Geometry of scanner */
213 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
215 char remark[MAXREMARK+1]; /* description of raysum data */
216 double calctime; /* time required to calculate raysums */
218 int ndet; /* number of detectors in array */
219 int nview; /* number of rotated views */
220 double rot_start; /* starting view rotation */
221 double rot_inc; /* angle between rotations */
222 double det_start; /* distance of beginning detector to center */
224 double det_inc; /* increment between detectors */
225 double phmlen; /* Length of PHANTOM edge (phm is square) */
227 typedef struct raysum_st RAYSUM;
229 /*----------------------------------------------------------------------*/
231 /*----------------------------------------------------------------------*/
233 /* Codes for Coordinate Types */
234 /* Defines coords for pelm_is_point_inside() */
237 PELM_COORD, /* Normalized Pelm Coordinates */
238 PHM_COORD /* User's phantom Coordinates */
241 /* Codes for Filter types */
243 typedef enum { /* filter types for filter_generate() */
249 FILTER_ABS_BANDLIMIT, /* filter times |x| */
251 FILTER_ABS_G_HAMMING,
256 /* function domains */
258 static const char D_FREQ_STR[]= "freq";
259 static const char D_SPATIAL_STR[]= "spatial";
267 FUNC_EVEN, /* function types, f[-n] = f[n] */
268 FUNC_ODD, /* f[-n] = -f[n] */
269 FUNC_BOTH /* function has both odd & even components */
272 /* interpolation methods */
273 typedef enum { /* Interpolation methods */
274 I_NEAREST, /* Nearest neighbor */
275 I_LINEAR, /* Linear interpolation */
277 I_1BSPLINE, /* 1st order B-Spline */
282 /* Constants for sizing PHANTOM */
284 static const double PERCENT_PHM_SIZE_INCR=0.0; /* Fractional increase in phantom limits compared to pelm size */
285 static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
287 static const char O_TRACE_NONE_STR[]= "none";
288 static const char O_TRACE_TEXT_STR[]= "text";
289 static const char O_TRACE_PHM_STR[]= "phm";
290 static const char O_TRACE_RAYS_STR[]= "rays";
291 static const char O_TRACE_PLOT_STR[]= "plot";
292 static const char O_TRACE_CLIPPING_STR[]= "clipping";
295 TRACE_NONE, /* No tracing */
296 TRACE_TEXT, /* Minimal status */
297 TRACE_PHM, /* Show phantom */
298 TRACE_RAYS, /* Show all rays */
299 TRACE_PLOT, /* Plot raysums */
300 TRACE_CLIPPING /* Plot clipping */
304 O_PHM_HERMAN, /* Herman head phantom */
305 O_PHM_ROWLAND, /* Rowland head phantom */
306 O_PHM_BROWLAND, /* Bordered Rowland head phantom */
307 O_PHM_UNITPULSE /* Unit pulse phantom */
310 static const char O_PHM_HERMAN_STR[]= "herman";
311 static const char O_PHM_ROWLAND_STR[]= "rowland";
312 static const char O_PHM_BROWLAND_STR[]= "browland";
313 static const char O_PHM_UNITPULSE_STR[]= "unitpulse";
315 static const char O_INTERP_NEAREST_STR[]= "nearest";
316 static const char O_INTERP_LINEAR_STR[]= "linear";
317 static const char O_INTERP_BSPLINE_STR[]= "bspline";
319 static const char O_FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
320 static const char O_FILTER_ABS_SINC_STR[]= "abs_sinc";
321 static const char O_FILTER_ABS_COS_STR[]= "abs_cos";
322 static const char O_FILTER_ABS_HAMMING_STR[]= "abs_hamming";
323 static const char O_FILTER_SHEPP_STR[]= "shepp";
324 static const char O_FILTER_BANDLIMIT_STR[]= "bandlimit";
325 static const char O_FILTER_SINC_STR[]= "sinc";
326 static const char O_FILTER_COS_STR[]= "cos";
327 static const char O_FILTER_HAMMING_STR[]= "hamming";
328 static const char O_FILTER_TRIANGLE_STR[]= "triangle";
338 static const char O_BPROJ_TRIG_STR[]= "trig";
339 static const char O_BPROJ_TABLE_STR[]= "table";
340 static const char O_BPROJ_DIFF_STR[]= "diff";
341 static const char O_BPROJ_DIFF2_STR[]= "diff2";
342 static const char O_BPROJ_IDIFF2_STR[]= "idiff2";
344 const static int RAYSUM_TRACE_ROW_TITLE=1;
345 const static int RAYSUM_TRACE_ROW_TITLE2=2;
346 const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
347 const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
348 const static int RAYSUM_TRACE_ROW_SCATTER=8;
349 const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
350 const static int RAYSUM_TRACE_ROW_NDET=12;
351 const static int RAYSUM_TRACE_ROW_NVIEW=13;
352 const static int RAYSUM_TRACE_ROW_SAMPLES=14;
353 const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
354 const static int RAYSUM_TRACE_ROW_ATTEN=18;
357 /*************************************************************************
358 * FUNCTION DECLARATIONS
359 ************************************************************************/
361 void usage (const char *program);
363 /* From reconstr.c */
364 IMAGE *image_reconst (IMAGE *im, RAYSUM *rs, int filt_type, double filt_param, const InterpolationType interp_type, int interp_param, const BackprojType backproj_type, int const ir_trace);
367 void backproj_init (const RAYSUM *rs, IMAGE *im, const BackprojType bproj_method);
368 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
369 const int interp_type, const int bproj_method);
370 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
372 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
373 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
374 const double view_angle, const int interp_type);
375 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
376 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
377 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
378 const double view_angle, const int interp_type);
379 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
380 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
381 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
382 const double view_angle, const int interp_type);
383 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
384 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
385 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
386 const double view_angle, const int interp_type);
387 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
388 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
389 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
390 const double view_angle, const int interp_type);
391 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
392 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
393 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
394 const double view_angle, const int interp_type);
395 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
398 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
401 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const FunctionSymmetry func_type);
402 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
405 int phm_add_pelm_kb(PHANTOM *phm);
406 PHANTOM *phm_select(void);
407 int interpolation_select(void);
408 int filter_select(double *filter_param);
411 double *filter_generate(const FilterType filt_type, double bw, double xmin, double xmax, int n, double param, const DomainType domain, int numint);
412 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
413 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
414 double filter_frequency_response(int filt_type, double u, double bw, double param);
415 double sinc(double x, double mult);
416 double integral_abscos(double u, double w);
419 IMAGE *image_create(const char *fname, const int nx, const int ny);
420 int image_clear(IMAGE *im);
421 int image_save(IMAGE *im);
422 IMAGE *image_load(const char *fname);
423 void image_filter_response(IMAGE *im, int domain, double bw, int filt_type, double filt_param, int opt_trace);
426 int opt_set_trace(const char *optarg);
427 const char *name_of_phantom(const int phmid);
428 int opt_set_phantom(const char *optarg);
429 int opt_set_interpolation(const char *optarg);
430 const char *name_of_interpolation(int interp_type);
431 int opt_set_filter(const char *optarg);
432 const char *name_of_filter(const int filter);
433 DomainType opt_set_filter_domain(const char *optarg);
434 const char *name_of_filter_domain(const DomainType domain);
435 int opt_set_backproj(const char *optarg);
436 const char *name_of_backproj(const BackprojType backproj);
439 PHANTOM *phm_create(const int phmid);
440 PHANTOM *phm_create_from_file(const char *fname);
441 PHANTOM *phm_init(void);
442 void phm_free (PHANTOM *phm);
443 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
444 void phm_add_pelm (PHANTOM *phm, const char *type, const double cx, const double cy,
445 const double u, const double v, const double rot, const double atten);
446 int pelm_make_points(PELM *obj);
447 void pelm_make_xform (PELM *obj);
448 PELM *pelm_alloc(void);
449 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
450 const double r, const double start, const double stop);
451 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
452 int circle_pts(double theta);
453 void phm_print(PHANTOM *phm);
454 #if HAVE_INTERACTIVE_GRAPHICS
455 void phm_show(const PHANTOM *phm);
456 void phm_draw(const PHANTOM *phm);
460 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
461 const int nsample, const int trace);
462 int pelm_is_point_inside(PELM *obj, const double x, const double y, const CoordType coord_type);
465 void phm_std_herman (PHANTOM *phm);
466 void phm_std_rowland (PHANTOM *phm);
467 void phm_std_rowland_bordered (PHANTOM *phm);
470 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
471 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);
472 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
473 double pelm_ray_attenuation (PELM *pelm, const double x1, const double y1, const double x2, const double y2);
474 int pelm_clip_line (const PELM *pelm, double *x1, double *y1, double *x2, double *y2);
475 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
478 DETECTOR *detector_create(const PHANTOM *phm, int geometry, int ndet, int nview, int nsample, const double rot_anglen);
479 void detector_free(DETECTOR *det);
482 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
483 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
484 RAYSUM *raysum_open(const char *filename);
485 void raysum_alloc_views(RAYSUM *rs);
486 void raysum_free(RAYSUM *rs);
487 int raysum_is_open(RAYSUM *rs);
488 int raysum_close(RAYSUM *rs);
489 int raysum_read_header(RAYSUM *rs);
490 int raysum_write_header(RAYSUM *rs);
491 int raysum_read(RAYSUM *rs);
492 int raysum_write(RAYSUM *rs);
493 DETARRAY *detarray_alloc(const int n);
494 void detarray_free(DETARRAY *darray);
495 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
496 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
497 int raysum_print(const RAYSUM *rs);
501 #endif /* __cplusplus */