1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.12 2000/05/07 12:46:19 kevin Exp $
7 ** Revision 1.12 2000/05/07 12:46:19 kevin
10 ** Revision 1.11 2000/05/05 02:37:31 kevin
11 ** renamed phmelm to pelm
13 ** Revision 1.10 2000/05/04 18:16:34 kevin
14 ** renamed filter definitions
16 ** Revision 1.9 2000/05/04 04:29:18 kevin
17 ** *** empty log message ***
19 ** Revision 1.8 2000/05/04 04:25:55 kevin
20 ** Renamed phantom and phantom-element functions/variables
22 ** Revision 1.7 2000/05/03 19:51:41 kevin
23 ** function renaming for phantoms and phantom elements
25 ** Revision 1.6 2000/05/03 08:49:49 kevin
28 ** Revision 1.5 2000/05/02 20:00:25 kevin
29 ** *** empty log message ***
31 ** Revision 1.4 2000/05/02 15:31:39 kevin
34 ** Revision 1.3 2000/04/29 23:24:29 kevin
35 ** *** empty log message ***
37 ** Revision 1.2 2000/04/28 14:14:16 kevin
38 ** *** empty log message ***
40 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
41 ** Initial CVS import for first public release
45 ** This program is free software; you can redistribute it and/or modify
46 ** it under the terms of the GNU General Public License (version 2) as
47 ** published by the Free Software Foundation.
49 ** This program is distributed in the hope that it will be useful,
50 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
51 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
52 ** GNU General Public License for more details.
54 ** You should have received a copy of the GNU General Public License
55 ** along with this program; if not, write to the Free Software
56 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
57 ******************************************************************************/
58 /* FILE IDENTIFICATION
60 * Name: ir.h Header File for Image Reconstruction System
61 * Programmer: Kevin Rosenberg
62 * Date Started: 7-1-84
63 * Last Change: 1-20-85
71 #endif /* __cplusplus */
74 #define MPI_MAX_PROCESS 128
79 int base_local_work_units;
80 int remainder_work_units;
81 int local_work_units[MPI_MAX_PROCESS];
82 int start_work_unit[MPI_MAX_PROCESS];
86 extern struct mpi_ct_st mpi_ct;
87 void mpi_ct_calc_work_units(const unsigned int global_work_units);
92 int *b; /* Histogram array (# of elements in each bin) */
93 int nbin; /* Number of histogram bins */
94 double xmin, xmax, xinc; /* Limits of histogram boundaries */
97 typedef struct histo_st HISTOGRAM;
99 /*---------------------------------------------------------------------------*/
101 #define POINTS_PER_CIRCLE 36
104 #define LENREMARK (MAXREMARK+1)
105 #define IMAGE_VAL FMTX_2D /* use 2d floating point matrix */
106 #define IMAGE_ELEM_TYPE DT_FLOAT /* use floats for images */
107 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
110 IMAGE_VAL v; /* values of voxels in matrix form */
111 SDF_2D *dfp_2d; /* Pointer to disk image file */
112 int nx, ny; /* size of voxel matrix */
113 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
114 char remark[LENREMARK]; /* description of voxel data */
115 float calctime; /* time to calculate voxels in seconds */
119 int type; /* pelm type (box, ellipse, etc) */
120 double atten; /* X-ray attenuation coefficient */
121 double cx,cy; /* center of pelm */
122 double u,v; /* size of pelm */
123 double rot; /* pelm rotation angle (in radians) */
124 double *x, *y; /* ptr to array of points in obj world coord */
125 int pts; /* number of points in outline arrays */
126 double xmin, xmax, ymin, ymax; /* pelm limits */
127 double radius; /* " */
128 struct { /* transform matrices */
129 GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
130 GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
132 struct pelm_st *next; /* pointer to next pelm in phantom */
135 typedef struct pelm_st PELM;
137 struct phm_st { /* Phantom structure */
138 PELM *pelm_list; /* pelm linked-list */
140 int n_pelm; /* number of pelms in phantom */
141 double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
142 double radius; /* " " */
145 typedef struct image_st IMAGE;
146 typedef struct phm_st PHANTOM;
148 #define P_PELMS 0 /* Phantom made of pelms */
149 #define P_UNIT_PULSE 1 /* Special PHANTOM, not made of pelms */
150 #define P_FILTER 9 /* defined only by a type */
152 /*----------------------------------------------------------------------*/
154 /*----------------------------------------------------------------------*/
156 /* Ray sums are collected along an array of ndet detectors. The data
157 * for these detectors is stored in the structure DETECTARRAY
160 #define DETECT_TYPE float
163 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
164 int ndet; /* Number of detectors in array */
165 double view_angle; /* View angle in radians */
168 #define DETECTOR_PARALLEL 1
169 #define DETECTOR_EQUIANGLE 2
170 #define DETECTOR_EQUILINEAR 3
173 int geometry; /* Geometry of detectory */
174 int ndet; /* Number of detectors in array */
175 int nview; /* Number of rotated views */
176 int nsample; /* Number of rays per detector */
177 double detlen; /* Total length of detector array */
178 double rotlen; /* Rotation angle length in radians (norm 2PI) */
179 double det_inc; /* Increment between centers of detectors */
180 double rot_inc; /* Increment in rotation angle between views */
181 double radius; /* Radius of rotation. Distance from */
182 /* center of phm to center of det */
183 double phmlen; /* Maximum Length of PHANTOM or area of interest */
185 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
186 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
187 double angle; /* Starting angle */
196 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
198 char remark[LENREMARK]; /* description of raysum data */
199 double calctime; /* time required to calculate raysums */
201 int ndet; /* number of detectors in array */
202 int nview; /* number of rotated views */
203 double rot_start; /* starting view rotation */
204 double rot_inc; /* angle between rotations */
205 double det_start; /* distance of beginning detector to center */
207 double det_inc; /* increment between detectors */
208 double phmlen; /* Length of PHANTOM edge (phm is square) */
211 typedef struct detarray_st DETARRAY;
212 typedef struct detector_st DETECTOR;
213 typedef struct raysum_st RAYSUM;
215 /*----------------------------------------------------------------------*/
217 /*----------------------------------------------------------------------*/
219 /* codes for pelm types, passed to phm_add_pelm() */
221 #define O_RECTANGLE 1
227 /* Codes for Coordinate Types */
228 /* Defines coords for pelm_is_point_inside() */
230 #define PELM_COORD -1 /* Normalized Pelm Coordinates */
231 #define PHM_COORD -2 /* User's PHANTOM Coordinates */
233 /* Codes for Filter types */
235 #define FILTER_BANDLIMIT 1 /* filter types for genfilter() */
236 #define FILTER_SINC 2
237 #define FILTER_G_HAMMING 3
238 #define FILTER_COSINE 4
239 #define FILTER_TRIANGLE 5
240 #define FILTER_ABS_BANDLIMIT 11 /* filters times abs() of function */
241 #define FILTER_ABS_SINC 12
242 #define FILTER_ABS_G_HAMMING 13
243 #define FILTER_ABS_COSINE 14
244 #define FILTER_SHEPP 21
246 /* function domains */
248 #define O_FREQ_STR "freq"
249 #define O_SPATIAL_STR "spatial"
251 #define D_FREQ 1 /* Domain names */
254 /* function symmetry */
256 #define FUNC_EVEN 1 /* function types, f[-n] = f[n] */
257 #define FUNC_ODD 2 /* f[-n] = -f[n] */
258 #define FUNC_BOTH 3 /* function has both odd & even components */
260 /* interpolation methods */
262 #define I_NEAREST 1 /* Interpolation methods */
263 #define I_LINEAR 2 /* Linear interpolation */
265 #define I_1BSPLINE 3 /* 1st order B-Spline */
269 /* Constants for sizing PHANTOM */
271 #define PERCENT_PHM_SIZE_INCR 0.0 /* Fractional increase in PHANTOM */
272 /* limits compared to pelm size */
273 #define N_EXTRA_DETECTORS 4 /* Number of extra detectors */
274 /* widths when calculating detlen */
276 #define O_TRACE_NONE_STR "none"
277 #define O_TRACE_TEXT_STR "text"
278 #define O_TRACE_PHM_STR "phm"
279 #define O_TRACE_RAYS_STR "rays"
280 #define O_TRACE_PLOT_STR "plot"
281 #define O_TRACE_CLIPPING_STR "clipping"
284 #define TRACE_NONE 0 /* No tracing */
285 #define TRACE_TEXT 1 /* Minimal status */
286 #define TRACE_PHM 2 /* Show PHANTOM */
287 #define TRACE_RAYS 3 /* Show all rays */
288 #define TRACE_PLOT 4 /* Plot raysums */
289 #define TRACE_CLIPPING 5 /* Plot clipping */
291 #define O_PHM_HERMAN 1 /* Herman head phantom */
292 #define O_PHM_ROWLAND 2 /* Rowland head phantom */
293 #define O_PHM_BROWLAND 3 /* Bordered Rowland head phantom */
294 #define O_PHM_UNITPULSE 4 /* Unit pulse phantom */
296 #define O_PHM_HERMAN_STR "herman"
297 #define O_PHM_ROWLAND_STR "rowland"
298 #define O_PHM_BROWLAND_STR "browland"
299 #define O_PHM_UNITPULSE_STR "unitpulse"
301 #define O_INTERP_NEAREST_STR "nearest"
302 #define O_INTERP_LINEAR_STR "linear"
303 #define O_INTERP_BSPLINE_STR "bspline"
305 #define O_FILTER_ABS_BANDLIMIT_STR "abs_bandlimit"
306 #define O_FILTER_ABS_SINC_STR "abs_sinc"
307 #define O_FILTER_ABS_COS_STR "abs_cos"
308 #define O_FILTER_ABS_HAMMING_STR "abs_hamming"
309 #define O_FILTER_SHEPP_STR "shepp"
310 #define O_FILTER_BANDLIMIT_STR "bandlimit"
311 #define O_FILTER_SINC_STR "sinc"
312 #define O_FILTER_COS_STR "cos"
313 #define O_FILTER_HAMMING_STR "hamming"
314 #define O_FILTER_TRIANGLE_STR "triangle"
316 #define O_BPROJ_TRIG 1
317 #define O_BPROJ_TABLE 2
318 #define O_BPROJ_DIFF 3
319 #define O_BPROJ_DIFF2 4
320 #define O_BPROJ_IDIFF2 5
322 #define O_BPROJ_TRIG_STR "trig"
323 #define O_BPROJ_TABLE_STR "table"
324 #define O_BPROJ_DIFF_STR "diff"
325 #define O_BPROJ_DIFF2_STR "diff2"
326 #define O_BPROJ_IDIFF2_STR "idiff2"
328 #define RAYSUM_TRACE_ROW_TITLE 1
329 #define RAYSUM_TRACE_ROW_TITLE2 2
330 #define RAYSUM_TRACE_ROW_PHANT_ID 4
331 #define RAYSUM_TRACE_ROW_CHROMATIC 7
332 #define RAYSUM_TRACE_ROW_SCATTER 8
333 #define RAYSUM_TRACE_ROW_PHOT_STAT 9
334 #define RAYSUM_TRACE_ROW_NDET 12
335 #define RAYSUM_TRACE_ROW_NVIEW 13
336 #define RAYSUM_TRACE_ROW_SAMPLES 14
337 #define RAYSUM_TRACE_ROW_CURR_VIEW 17
338 #define RAYSUM_TRACE_ROW_ATTEN 18
341 /*----------------------------------------------------------------------*/
342 /* GRAY SCALE STRUCTURES */
343 /*----------------------------------------------------------------------*/
345 #define GS_MAX_CELL_SIZE 4
347 typedef int GS_BITMASK[4][4];
349 struct greyscale_st {
350 int dev; /* Device to output to */
351 int (*dotfunc)(int x, int y, int color); /* Pointer to dot function for device */
352 int cur_x, cur_y; /* Current cell location */
353 int nxcell, nycell; /* size of cell in pixels */
354 int xmin, ymin; /* starting position of grey scale */
355 int num_color; /* Number of primary colors available */
356 int num_intens; /* Number of intensities available */
357 int max_level; /* gs levels range from 0 to max_level */
358 char *fg_color_tbl; /* Hold foreground color for each level */
359 char *bg_color_tbl; /* Holds background color */
360 char *level_sub_tbl; /* Holds value to subtract for level */
361 /* before accessing bit mask */
362 GS_BITMASK *bm; /* Holds grey-scale bit mask */
363 struct greyscale_st *next_dev; /* Pointer to next open device */
364 /* == NULL when no more devices */
367 typedef struct greyscale_st GREYSCALE;
370 /* From reconstr.c */
371 IMAGE *image_reconst (IMAGE *im, RAYSUM *rs, int filt_type, double filt_param, int interp_type, int interp_param, const int backproj_type, int ir_trace);
374 void backproj_init (const RAYSUM *rs, IMAGE *im, const int bproj_method);
375 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
376 const int interp_type, const int bproj_method);
377 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
379 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
380 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
381 const double view_angle, const int interp_type);
382 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
383 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
384 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
385 const double view_angle, const int interp_type);
386 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
387 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
388 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
389 const double view_angle, const int interp_type);
390 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
391 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
392 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
393 const double view_angle, const int interp_type);
394 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
395 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
396 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
397 const double view_angle, const int interp_type);
398 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
399 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
400 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
401 const double view_angle, const int interp_type);
402 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
404 void usage (const char *program);
405 int main(const int argc, char * const argv[]);
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 int 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(int filt_type, double bw, double xmin, double xmax, int n, double param, int 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, int domain, double bw, int filt_type, double filt_param, int opt_trace);
438 int opt_set_trace(const char *optarg, const char *program);
439 const char *name_of_phantom(const int phmid);
440 int opt_set_phantom(const char *optarg, const char *program);
441 int opt_set_interpolation(const char *optarg, const char *program);
442 const char *name_of_interpolation(int interp_type);
443 int opt_set_filter(const char *optarg, const char *program);
444 const char *name_of_filter(const int filter);
445 int opt_set_filter_domain(const char *optarg, const char *program);
446 const char *name_of_filter_domain(const int domain);
447 int opt_set_backproj(const char *optarg, const char *program);
448 const char *name_of_backproj(const int backproj);
451 PHANTOM *phm_create(const int phmid);
452 PHANTOM *phm_create_from_file(const char *fname);
453 PHANTOM *phm_init(void);
454 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
455 void phm_add_pelm (PHANTOM *phm, const int type, const double cx, const double cy,
456 const double u, const double v, const double rot, const double atten);
457 int pelm_make_points(PELM *obj);
458 void pelm_make_xform (PELM *obj);
459 PELM *pelm_alloc(void);
460 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
461 const double r, const double start, const double stop);
462 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
463 int circle_pts(double theta);
464 void phm_print(PHANTOM *phm);
465 #if HAVE_INTERACTIVE_GRAPHICS
466 void phm_show(const PHANTOM *phm);
467 void phm_draw(const PHANTOM *phm);
471 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
472 const int nsample, const int trace);
473 int pelm_is_point_inside(const PELM *obj, double x, double y, const int coord_type);
476 void phm_std_herman (PHANTOM *phm);
477 void phm_std_rowland (PHANTOM *phm);
478 void phm_std_rowland_bordered (PHANTOM *phm);
481 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
482 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);
483 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
484 double pelm_ray_attenuation (const PELM *obj, const double x1, const double y1, const double x2, const double y2);
485 int pelm_clip_line (const PELM *obj, double *x1, double *y1, double *x2, double *y2);
486 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
489 DETECTOR *detector_create(const PHANTOM *phm, int geometry, int ndet, int nview, int nsample, const double rot_anglen);
490 void detector_free(DETECTOR *det);
493 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
494 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
495 RAYSUM *raysum_open(const char *filename);
496 void raysum_alloc_views(RAYSUM *rs);
497 void raysum_free(RAYSUM *rs);
498 int raysum_is_open(RAYSUM *rs);
499 int raysum_close(RAYSUM *rs);
500 int raysum_read_header(RAYSUM *rs);
501 int raysum_write_header(RAYSUM *rs);
502 int raysum_read(RAYSUM *rs);
503 int raysum_write(RAYSUM *rs);
504 DETARRAY *detarray_alloc(const int n);
505 void detarray_free(DETARRAY *darray);
506 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
507 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
508 int raysum_print(const RAYSUM *rs);
512 #endif /* __cplusplus */