1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.16 2000/05/24 22:48:17 kevin Exp $
7 ** Revision 1.16 2000/05/24 22:48:17 kevin
8 ** First functional version of SDF library for X-window
10 ** Revision 1.15 2000/05/16 04:33:17 kevin
11 ** Updated documentation
13 ** Revision 1.14 2000/05/11 14:07:00 kevin
14 ** Added support for Windows NT
16 ** Revision 1.13 2000/05/08 20:00:48 kevin
19 ** Revision 1.12 2000/05/07 12:46:19 kevin
20 ** made c++ compatible
22 ** Revision 1.11 2000/05/05 02:37:31 kevin
23 ** renamed phmelm to pelm
25 ** Revision 1.10 2000/05/04 18:16:34 kevin
26 ** renamed filter definitions
28 ** Revision 1.9 2000/05/04 04:29:18 kevin
29 ** *** empty log message ***
31 ** Revision 1.8 2000/05/04 04:25:55 kevin
32 ** Renamed phantom and phantom-element functions/variables
34 ** Revision 1.7 2000/05/03 19:51:41 kevin
35 ** function renaming for phantoms and phantom elements
37 ** Revision 1.6 2000/05/03 08:49:49 kevin
40 ** Revision 1.5 2000/05/02 20:00:25 kevin
41 ** *** empty log message ***
43 ** Revision 1.4 2000/05/02 15:31:39 kevin
46 ** Revision 1.3 2000/04/29 23:24:29 kevin
47 ** *** empty log message ***
49 ** Revision 1.2 2000/04/28 14:14:16 kevin
50 ** *** empty log message ***
52 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
53 ** Initial CVS import for first public release
57 ** This program is free software; you can redistribute it and/or modify
58 ** it under the terms of the GNU General Public License (version 2) as
59 ** published by the Free Software Foundation.
61 ** This program is distributed in the hope that it will be useful,
62 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
63 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
64 ** GNU General Public License for more details.
66 ** You should have received a copy of the GNU General Public License
67 ** along with this program; if not, write to the Free Software
68 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
69 ******************************************************************************/
71 /* ir.h Header File for Image Reconstruction System
72 * Programmer: Kevin Rosenberg
73 * Date Started: 7-1-84
81 #endif /* __cplusplus */
84 #define MPI_MAX_PROCESS 128
89 int base_local_work_units;
90 int remainder_work_units;
91 int local_work_units[MPI_MAX_PROCESS];
92 int start_work_unit[MPI_MAX_PROCESS];
96 extern struct mpi_ct_st mpi_ct;
97 void mpi_ct_calc_work_units(const unsigned int global_work_units);
102 int *b; /* Histogram array (# of elements in each bin) */
103 int nbin; /* Number of histogram bins */
104 double xmin, xmax, xinc; /* Limits of histogram boundaries */
107 typedef struct histo_st HISTOGRAM;
109 /*---------------------------------------------------------------------------*/
111 static const int POINTS_PER_CIRCLE=90;
114 typedef FMTX_2D IMAGE_ARRAY; /* use 2d floating point matrix */
115 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
118 IMAGE_ARRAY v; /* values of voxels in matrix form */
119 SDF_2D *dfp_2d; /* Pointer to disk image file */
120 int nx, ny; /* size of voxel matrix */
121 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
122 char remark[MAXREMARK+1]; /* description of voxel data */
123 float calctime; /* time to calculate voxels in seconds */
125 typedef struct image_st IMAGE;
136 PElmType type; /* pelm type (box, ellipse, etc) */
137 double atten; /* X-ray attenuation coefficient */
138 double cx,cy; /* center of pelm */
139 double u,v; /* size of pelm */
140 double rot; /* pelm rotation angle (in radians) */
141 double *x, *y; /* ptr to array of points in obj world coord */
142 int pts; /* number of points in outline arrays */
143 double xmin, xmax, ymin, ymax; /* pelm limits */
144 double radius; /* " */
145 GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
146 GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
147 struct pelm_st *next; /* pointer to next pelm in phantom */
149 typedef struct pelm_st PELM;
152 P_PELMS, /* Phantom made of Pelms */
153 P_UNIT_PULSE, /* Special phantom, not made of pelms */
154 P_FILTER /* defined only by this type */
157 struct phm_st { /* Phantom structure */
158 PELM *pelm_list; /* pelm linked-list */
160 int n_pelm; /* number of pelms in phantom */
161 double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
162 double radius; /* " " */
164 typedef struct phm_st PHANTOM;
167 /*----------------------------------------------------------------------*/
169 /*----------------------------------------------------------------------*/
171 /* Ray sums are collected along an array of ndet detectors. The data
172 * for these detectors is stored in the structure DETECTARRAY
175 typedef float DETECT_TYPE;
178 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
179 int ndet; /* Number of detectors in array */
180 double view_angle; /* View angle in radians */
182 typedef struct detarray_st DETARRAY;
192 ScannerGeometry geometry; /* Geometry of detectory */
193 int ndet; /* Number of detectors in array */
194 int nview; /* Number of rotated views */
195 int nsample; /* Number of rays per detector */
196 double detlen; /* Total length of detector array */
197 double rotlen; /* Rotation angle length in radians (norm 2PI) */
198 double det_inc; /* Increment between centers of detectors */
199 double rot_inc; /* Increment in rotation angle between views */
200 double radius; /* Radius of rotation. Distance from */
201 /* center of phm to center of det */
202 double phmlen; /* Maximum Length of phantom or area of interest */
204 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
205 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
206 double angle; /* Starting angle */
209 typedef struct detector_st DETECTOR;
212 int fd; /* Disk file descriptor */
213 int file_mode; /* Current file mode (read or write) */
214 int header_size; /* Size of disk file header */
215 int geometry; /* Geometry of scanner */
216 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
218 char remark[MAXREMARK+1]; /* description of raysum data */
219 double calctime; /* time required to calculate raysums */
221 int ndet; /* number of detectors in array */
222 int nview; /* number of rotated views */
223 double rot_start; /* starting view rotation */
224 double rot_inc; /* angle between rotations */
225 double det_start; /* distance of beginning detector to center */
227 double det_inc; /* increment between detectors */
228 double phmlen; /* Length of PHANTOM edge (phm is square) */
230 typedef struct raysum_st RAYSUM;
232 /*----------------------------------------------------------------------*/
234 /*----------------------------------------------------------------------*/
236 /* Codes for Coordinate Types */
237 /* Defines coords for pelm_is_point_inside() */
240 PELM_COORD, /* Normalized Pelm Coordinates */
241 PHM_COORD /* User's phantom Coordinates */
244 /* Codes for Filter types */
246 typedef enum { /* filter types for filter_generate() */
252 FILTER_ABS_BANDLIMIT, /* filter times |x| */
254 FILTER_ABS_G_HAMMING,
259 /* function domains */
261 static const char D_FREQ_STR[]= "freq";
262 static const char D_SPATIAL_STR[]= "spatial";
270 FUNC_EVEN, /* function types, f[-n] = f[n] */
271 FUNC_ODD, /* f[-n] = -f[n] */
272 FUNC_BOTH /* function has both odd & even components */
275 /* interpolation methods */
276 typedef enum { /* Interpolation methods */
277 I_NEAREST, /* Nearest neighbor */
278 I_LINEAR, /* Linear interpolation */
280 I_1BSPLINE, /* 1st order B-Spline */
285 /* Constants for sizing PHANTOM */
287 static const double PERCENT_PHM_SIZE_INCR=0.0; /* Fractional increase in phantom limits compared to pelm size */
288 static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
290 static const char O_TRACE_NONE_STR[]= "none";
291 static const char O_TRACE_TEXT_STR[]= "text";
292 static const char O_TRACE_PHM_STR[]= "phm";
293 static const char O_TRACE_RAYS_STR[]= "rays";
294 static const char O_TRACE_PLOT_STR[]= "plot";
295 static const char O_TRACE_CLIPPING_STR[]= "clipping";
298 TRACE_NONE, /* No tracing */
299 TRACE_TEXT, /* Minimal status */
300 TRACE_PHM, /* Show phantom */
301 TRACE_RAYS, /* Show all rays */
302 TRACE_PLOT, /* Plot raysums */
303 TRACE_CLIPPING /* Plot clipping */
307 O_PHM_HERMAN, /* Herman head phantom */
308 O_PHM_ROWLAND, /* Rowland head phantom */
309 O_PHM_BROWLAND, /* Bordered Rowland head phantom */
310 O_PHM_UNITPULSE /* Unit pulse phantom */
313 static const char O_PHM_HERMAN_STR[]= "herman";
314 static const char O_PHM_ROWLAND_STR[]= "rowland";
315 static const char O_PHM_BROWLAND_STR[]= "browland";
316 static const char O_PHM_UNITPULSE_STR[]= "unitpulse";
318 static const char O_INTERP_NEAREST_STR[]= "nearest";
319 static const char O_INTERP_LINEAR_STR[]= "linear";
320 static const char O_INTERP_BSPLINE_STR[]= "bspline";
322 static const char O_FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
323 static const char O_FILTER_ABS_SINC_STR[]= "abs_sinc";
324 static const char O_FILTER_ABS_COS_STR[]= "abs_cos";
325 static const char O_FILTER_ABS_HAMMING_STR[]= "abs_hamming";
326 static const char O_FILTER_SHEPP_STR[]= "shepp";
327 static const char O_FILTER_BANDLIMIT_STR[]= "bandlimit";
328 static const char O_FILTER_SINC_STR[]= "sinc";
329 static const char O_FILTER_COS_STR[]= "cos";
330 static const char O_FILTER_HAMMING_STR[]= "hamming";
331 static const char O_FILTER_TRIANGLE_STR[]= "triangle";
341 static const char O_BPROJ_TRIG_STR[]= "trig";
342 static const char O_BPROJ_TABLE_STR[]= "table";
343 static const char O_BPROJ_DIFF_STR[]= "diff";
344 static const char O_BPROJ_DIFF2_STR[]= "diff2";
345 static const char O_BPROJ_IDIFF2_STR[]= "idiff2";
347 const static int RAYSUM_TRACE_ROW_TITLE=1;
348 const static int RAYSUM_TRACE_ROW_TITLE2=2;
349 const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
350 const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
351 const static int RAYSUM_TRACE_ROW_SCATTER=8;
352 const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
353 const static int RAYSUM_TRACE_ROW_NDET=12;
354 const static int RAYSUM_TRACE_ROW_NVIEW=13;
355 const static int RAYSUM_TRACE_ROW_SAMPLES=14;
356 const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
357 const static int RAYSUM_TRACE_ROW_ATTEN=18;
360 /*************************************************************************
361 * FUNCTION DECLARATIONS
362 ************************************************************************/
364 void usage (const char *program);
366 /* From reconstr.c */
367 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);
370 void backproj_init (const RAYSUM *rs, IMAGE *im, const BackprojType bproj_method);
371 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
372 const int interp_type, const int bproj_method);
373 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
375 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
376 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
377 const double view_angle, const int interp_type);
378 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
379 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
380 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
381 const double view_angle, const int interp_type);
382 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
383 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
384 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
385 const double view_angle, const int interp_type);
386 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
387 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
388 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
389 const double view_angle, const int interp_type);
390 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
391 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
392 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
393 const double view_angle, const int interp_type);
394 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
395 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
396 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
397 const double view_angle, const int interp_type);
398 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
401 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
404 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const FunctionSymmetry func_type);
405 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
408 int phm_add_pelm_kb(PHANTOM *phm);
409 PHANTOM *phm_select(void);
410 int interpolation_select(void);
411 int filter_select(double *filter_param);
414 double *filter_generate(const FilterType filt_type, double bw, double xmin, double xmax, int n, double param, const DomainType domain, int numint);
415 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
416 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
417 double filter_frequency_response(int filt_type, double u, double bw, double param);
418 double sinc(double x, double mult);
419 double integral_abscos(double u, double w);
422 IMAGE *image_create(const char *fname, const int nx, const int ny);
423 int image_clear(IMAGE *im);
424 int image_save(IMAGE *im);
425 IMAGE *image_load(const char *fname);
426 void image_filter_response(IMAGE *im, const DomainType domain, double bw, const FilterType filt_type, double filt_param, const int opt_trace);
427 int image_display (const IMAGE *im);
428 int image_display_scale (const IMAGE *im, const int scale, const double pmin, const double pmax);
431 int opt_set_trace(const char *optarg);
432 const char *name_of_phantom(const int phmid);
433 int opt_set_phantom(const char *optarg);
434 int opt_set_interpolation(const char *optarg);
435 const char *name_of_interpolation(int interp_type);
436 int opt_set_filter(const char *optarg);
437 const char *name_of_filter(const int filter);
438 DomainType opt_set_filter_domain(const char *optarg);
439 const char *name_of_filter_domain(const DomainType domain);
440 int opt_set_backproj(const char *optarg);
441 const char *name_of_backproj(const BackprojType backproj);
444 PHANTOM *phm_create(const int phmid);
445 PHANTOM *phm_create_from_file(const char *fname);
446 PHANTOM *phm_init(void);
447 void phm_free (PHANTOM *phm);
448 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
449 void phm_add_pelm (PHANTOM *phm, const char *type, const double cx, const double cy,
450 const double u, const double v, const double rot, const double atten);
451 int pelm_make_points(PELM *obj);
452 void pelm_make_xform (PELM *obj);
453 PELM *pelm_alloc(void);
454 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
455 const double r, const double start, const double stop);
456 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
457 int circle_pts(double theta);
458 void phm_print(PHANTOM *phm);
460 void phm_show(const PHANTOM *phm);
461 void phm_draw(const PHANTOM *phm);
465 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
466 const int nsample, const int trace);
467 int pelm_is_point_inside(PELM *obj, const double x, const double y, const CoordType coord_type);
470 void phm_std_herman (PHANTOM *phm);
471 void phm_std_rowland (PHANTOM *phm);
472 void phm_std_rowland_bordered (PHANTOM *phm);
475 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
476 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);
477 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
478 double pelm_ray_attenuation (PELM *pelm, const double x1, const double y1, const double x2, const double y2);
479 int pelm_clip_line (const PELM *pelm, double *x1, double *y1, double *x2, double *y2);
480 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
483 DETECTOR *detector_create(const PHANTOM *phm, int geometry, int ndet, int nview, int nsample, const double rot_anglen);
484 void detector_free(DETECTOR *det);
487 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
488 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
489 RAYSUM *raysum_open(const char *filename);
490 void raysum_alloc_views(RAYSUM *rs);
491 void raysum_free(RAYSUM *rs);
492 int raysum_is_open(RAYSUM *rs);
493 int raysum_close(RAYSUM *rs);
494 int raysum_read_header(RAYSUM *rs);
495 int raysum_write_header(RAYSUM *rs);
496 int raysum_read(RAYSUM *rs);
497 int raysum_write(RAYSUM *rs);
498 DETARRAY *detarray_alloc(const int n);
499 void detarray_free(DETARRAY *darray);
500 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
501 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
502 int raysum_print(const RAYSUM *rs);
506 #endif /* __cplusplus */