1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.7 2000/05/03 19:51:41 kevin Exp $
7 ** Revision 1.7 2000/05/03 19:51:41 kevin
8 ** function renaming for phantoms and phantom elements
10 ** Revision 1.6 2000/05/03 08:49:49 kevin
13 ** Revision 1.5 2000/05/02 20:00:25 kevin
14 ** *** empty log message ***
16 ** Revision 1.4 2000/05/02 15:31:39 kevin
19 ** Revision 1.3 2000/04/29 23:24:29 kevin
20 ** *** empty log message ***
22 ** Revision 1.2 2000/04/28 14:14:16 kevin
23 ** *** empty log message ***
25 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
26 ** Initial CVS import for first public release
30 ** This program is free software; you can redistribute it and/or modify
31 ** it under the terms of the GNU General Public License (version 2) as
32 ** published by the Free Software Foundation.
34 ** This program is distributed in the hope that it will be useful,
35 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
36 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 ** GNU General Public License for more details.
39 ** You should have received a copy of the GNU General Public License
40 ** along with this program; if not, write to the Free Software
41 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
42 ******************************************************************************/
43 /* FILE IDENTIFICATION
45 * Name: ir.h Header File for Image Reconstruction System
46 * Programmer: Kevin Rosenberg
47 * Date Started: 7-1-84
48 * Last Change: 1-20-85
55 #define MPI_MAX_PROCESS 128
60 int base_local_work_units;
61 int remainder_work_units;
62 int local_work_units[MPI_MAX_PROCESS];
63 int start_work_unit[MPI_MAX_PROCESS];
67 extern struct mpi_ct_st mpi_ct;
68 void mpi_ct_calc_work_units(const unsigned int global_work_units);
73 int *b; /* Histogram array (# of elements in each bin) */
74 int nbin; /* Number of histogram bins */
75 double xmin, xmax, xinc; /* Limits of histogram boundaries */
78 typedef struct histo_st HISTOGRAM;
80 /*---------------------------------------------------------------------------*/
82 #define POINTS_PER_CIRCLE 36
85 #define LENREMARK (MAXREMARK+1)
86 #define IMAGE_VAL FMTX_2D /* use 2d floating point matrix */
87 #define IMAGE_ELEM_TYPE DT_FLOAT /* use floats for images */
88 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
91 IMAGE_VAL v; /* values of voxels in matrix form */
92 SDF_2D *dfp_2d; /* Pointer to disk image file */
93 int nx, ny; /* size of voxel matrix */
94 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
95 char remark[LENREMARK]; /* description of voxel data */
96 float calctime; /* time to calculate voxels in seconds */
100 int type; /* phmelem type (box, ellipse, etc) */
101 double atten; /* X-ray attenuation coefficient */
102 double cx,cy; /* center of phmelem */
103 double u,v; /* size of phmelem */
104 double rot; /* phmelem rotation angle (in radians) */
105 double *x, *y; /* ptr to array of points in obj world coord */
106 int pts; /* number of points in outline arrays */
107 double xmin, xmax, ymin, ymax; /* phmelem limits */
108 double radius; /* " */
109 struct { /* transform matrices */
110 GRFMTX_2D p_to_o; /* map from phantom to standard phmelem coords */
111 GRFMTX_2D o_to_p; /* map from std phmelem coords to phantom coords */
113 struct phmelem_st *next; /* pointer to next phmelem in phantom */
116 typedef struct phmelem_st PHMELEM;
118 struct phm_st { /* Phantom structure */
119 PHMELEM *objlist; /* phmelem list */
121 int n_pelem; /* number of phmelems in phantom */
122 double xmin, xmax, ymin, ymax; /* extent of phmelems in phmelem coordinates */
123 double radius; /* " " */
126 typedef struct image_st IMAGE;
127 typedef struct phm_st PHANTOM;
129 #define P_PHMELEMS 0 /* PHANTOM made of phmelems */
130 #define P_UNIT_PULSE 1 /* Special PHANTOM, not made of phmelems */
131 #define P_FILTER 9 /* defined only by a type */
133 /*----------------------------------------------------------------------*/
135 /*----------------------------------------------------------------------*/
137 /* Ray sums are collected along an array of ndet detectors. The data
138 * for these detectors is stored in the structure DETECTARRAY
141 #define DETECT_TYPE float
144 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
145 int ndet; /* Number of detectors in array */
146 double view_angle; /* View angle in radians */
149 #define DETECTOR_PARALLEL 1
150 #define DETECTOR_EQUIANGLE 2
151 #define DETECTOR_EQUILINEAR 3
154 int geometry; /* Geometry of detectory */
155 int ndet; /* Number of detectors in array */
156 int nview; /* Number of rotated views */
157 int nsample; /* Number of rays per detector */
158 double detlen; /* Total length of detector array */
159 double rotlen; /* Rotation angle length in radians (norm 2PI) */
160 double det_inc; /* Increment between centers of detectors */
161 double rot_inc; /* Increment in rotation angle between views */
162 double radius; /* Radius of rotation. Distance from */
163 /* center of phm to center of det */
164 double phmlen; /* Maximum Length of PHANTOM or area of interest */
166 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
167 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
168 double angle; /* Starting angle */
176 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
178 char remark[LENREMARK]; /* description of raysum data */
179 double calctime; /* time required to calculate raysums */
181 int ndet; /* number of detectors in array */
182 int nview; /* number of rotated views */
183 double rot_start; /* starting view rotation */
184 double rot_inc; /* angle between rotations */
185 double det_start; /* distance of beginning detector to center */
187 double det_inc; /* increment between detectors */
188 double phmlen; /* Length of PHANTOM edge (phm is square) */
191 typedef struct detarray_st DETARRAY;
192 typedef struct detect_st DETECTOR;
193 typedef struct raysum_st RAYSUM;
195 /*----------------------------------------------------------------------*/
197 /*----------------------------------------------------------------------*/
199 /* codes for phmelem types, passed to add_obj() */
201 #define O_RECTANGLE 1
207 /* Codes for Coordinate Types */
208 /* Defines coords for inside_obj() */
210 #define OBJ_COORD -1 /* Normalized Phmelem Coordinates */
211 #define PHM_COORD -2 /* User's PHANTOM Coordinates */
213 /* Codes for Filter types */
215 #define W_BANDLIMIT 1 /* filter types for genfilter() */
217 #define W_G_HAMMING 3
221 #define W_A_BANDLIMIT 11 /* filters times abs() of function */
223 #define W_AG_HAMMING 13
224 #define W_A_COSINE 14
228 /* function domains */
230 #define O_FREQ_STR "freq"
231 #define O_SPATIAL_STR "spatial"
233 #define D_FREQ 1 /* Domain names */
236 /* function symmetry */
238 #define FUNC_EVEN 1 /* function types, f[-n] = f[n] */
239 #define FUNC_ODD 2 /* f[-n] = -f[n] */
240 #define FUNC_BOTH 3 /* function has both odd & even components */
242 /* interpolation methods */
244 #define I_NEAREST 1 /* Interpolation methods */
245 #define I_LINEAR 2 /* Linear interpolation */
247 #define I_1BSPLINE 3 /* 1st order B-Spline */
251 /* Constants for sizing PHANTOM */
253 #define PERCENT_PHM_SIZE_INCR 0.0 /* Fractional increase in PHANTOM */
254 /* limits compared to phmelem size */
255 #define N_EXTRA_DETECTORS 4 /* Number of extra detectors */
256 /* widths when calculating detlen */
258 #define O_TRACE_NONE_STR "none"
259 #define O_TRACE_TEXT_STR "text"
260 #define O_TRACE_PHM_STR "phm"
261 #define O_TRACE_RAYS_STR "rays"
262 #define O_TRACE_PLOT_STR "plot"
263 #define O_TRACE_CLIPPING_STR "clipping"
266 #define TRACE_NONE 0 /* No tracing */
267 #define TRACE_TEXT 1 /* Minimal status */
268 #define TRACE_PHM 2 /* Show PHANTOM */
269 #define TRACE_RAYS 3 /* Show all rays */
270 #define TRACE_PLOT 4 /* Plot raysums */
271 #define TRACE_CLIPPING 5 /* Plot clipping */
273 #define O_PHM_HERMAN 1 /* Herman head phantom */
274 #define O_PHM_ROWLAND 2 /* Rowland head phantom */
275 #define O_PHM_BROWLAND 3 /* Bordered Rowland head phantom */
276 #define O_PHM_UNITPULSE 4 /* Unit pulse phantom */
278 #define O_PHM_HERMAN_STR "herman"
279 #define O_PHM_ROWLAND_STR "rowland"
280 #define O_PHM_BROWLAND_STR "browland"
281 #define O_PHM_UNITPULSE_STR "unitpulse"
283 #define O_INTERP_NEAREST_STR "nearest"
284 #define O_INTERP_LINEAR_STR "linear"
285 #define O_INTERP_BSPLINE_STR "bspline"
287 #define O_FILTER_ABS_BANDLIMIT_STR "abs_bandlimit"
288 #define O_FILTER_ABS_SINC_STR "abs_sinc"
289 #define O_FILTER_ABS_COS_STR "abs_cos"
290 #define O_FILTER_ABS_HAMMING_STR "abs_hamming"
291 #define O_FILTER_SHEPP_STR "shepp"
292 #define O_FILTER_BANDLIMIT_STR "bandlimit"
293 #define O_FILTER_SINC_STR "sinc"
294 #define O_FILTER_COS_STR "cos"
295 #define O_FILTER_HAMMING_STR "hamming"
296 #define O_FILTER_TRIANGLE_STR "triangle"
298 #define O_BPROJ_TRIG 1
299 #define O_BPROJ_TABLE 2
300 #define O_BPROJ_DIFF 3
301 #define O_BPROJ_DIFF2 4
302 #define O_BPROJ_IDIFF2 5
304 #define O_BPROJ_TRIG_STR "trig"
305 #define O_BPROJ_TABLE_STR "table"
306 #define O_BPROJ_DIFF_STR "diff"
307 #define O_BPROJ_DIFF2_STR "diff2"
308 #define O_BPROJ_IDIFF2_STR "idiff2"
310 #define RS_TRACE_ROW_TITLE 1
311 #define RS_TRACE_ROW_TITLE2 2
312 #define RS_TRACE_ROW_PHANT_ID 4
313 #define RS_TRACE_ROW_CHROMATIC 7
314 #define RS_TRACE_ROW_SCATTER 8
315 #define RS_TRACE_ROW_PHOT_STAT 9
316 #define RS_TRACE_ROW_NDET 12
317 #define RS_TRACE_ROW_NVIEW 13
318 #define RS_TRACE_ROW_SAMPLES 14
319 #define RS_TRACE_ROW_CURR_VIEW 17
320 #define RS_TRACE_ROW_ATTEN 18
323 /*----------------------------------------------------------------------*/
324 /* GRAY SCALE STRUCTURES */
325 /*----------------------------------------------------------------------*/
327 #define GS_MAX_CELL_SIZE 4
329 typedef int GS_BITMASK[4][4];
331 struct greyscale_st {
332 int dev; /* Device to output to */
333 int (*dotfunc)(int x, int y, int color); /* Pointer to dot function for device */
334 int cur_x, cur_y; /* Current cell location */
335 int nxcell, nycell; /* size of cell in pixels */
336 int xmin, ymin; /* starting position of grey scale */
337 int num_color; /* Number of primary colors available */
338 int num_intens; /* Number of intensities available */
339 int max_level; /* gs levels range from 0 to max_level */
340 char *fg_color_tbl; /* Hold foreground color for each level */
341 char *bg_color_tbl; /* Holds background color */
342 char *level_sub_tbl; /* Holds value to subtract for level */
343 /* before accessing bit mask */
344 GS_BITMASK *bm; /* Holds grey-scale bit mask */
345 struct greyscale_st *next_dev; /* Pointer to next open device */
346 /* == NULL when no more devices */
349 typedef struct greyscale_st GREYSCALE;
352 /* From reconstr.c */
353 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);
356 void backproj_init (const RAYSUM *rs, IMAGE *im, const int bproj_method);
357 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
358 const int interp_type, const int bproj_method);
359 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
361 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
362 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
363 const double view_angle, const int interp_type);
364 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
365 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
366 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
367 const double view_angle, const int interp_type);
368 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
369 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
370 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
371 const double view_angle, const int interp_type);
372 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
373 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
374 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
375 const double view_angle, const int interp_type);
376 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
377 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
378 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
379 const double view_angle, const int interp_type);
380 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
381 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
382 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
383 const double view_angle, const int interp_type);
384 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
386 void usage (const char *program);
387 int main(const int argc, char * const argv[]);
392 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
394 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const int func_type);
395 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
396 void rotate2d(double x[], double y[], int pts, double angle);
397 void xlat2d(double x[], double y[], int pts, double xoffset, double yoffset);
398 void scale2d(double x[], double y[], int pts, double xfact, double yfact);
399 int circle_pts(double theta);
401 int phm_add_pelem_kb(PHANTOM *phm);
402 PHANTOM *phm_select(void);
403 int interpolation_select(void);
404 int filter_select(double *filter_param);
406 double *filter_generate(int filt_type, double bw, double xmin, double xmax, int n, double param, int domain, int numint);
407 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
408 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
409 double filter_frequency_response(int filt_type, double u, double bw, double param);
410 double sinc(double x, double mult);
411 double abscos_int(double u, double w);
413 IMAGE *image_create(const char *fname, const int nx, const int ny);
414 int image_clear(IMAGE *im);
415 int image_save(IMAGE *im);
416 IMAGE *image_load(const char *fname);
417 void image_filter_response(IMAGE *im, int domain, double bw, int filt_type, double filt_param, int opt_trace);
419 int opt_set_trace(const char *optarg, const char *program);
420 const char *name_of_phantom(const int phmid);
421 int opt_set_phantom(const char *optarg, const char *program);
422 int opt_set_interpolation(const char *optarg, const char *program);
423 const char *name_of_interpolation(int interp_type);
424 int opt_set_filter(const char *optarg, const char *program);
425 const char *name_of_filter(const int filter);
426 int opt_set_filter_domain(const char *optarg, const char *program);
427 const char *name_of_filter_domain(const int domain);
428 int opt_set_backproj(const char *optarg, const char *program);
429 const char *name_of_backproj(const int backproj);
431 PHANTOM *phm_create(const int phmid);
432 PHANTOM *phm_create_from_file(const char *fname);
433 PHANTOM *phm_init(void);
434 int phm_add_pelem_file(PHANTOM *phm, const char *fname);
435 void phm_add_pelem (PHANTOM *phm, const int type, const double cx, const double cy,
436 const double u, const double v, const double rot, const double atten);
437 int pelem_make_points(PHMELEM *obj);
438 void pelem_make_xform (PHMELEM *obj);
439 PHMELEM *pelem_alloc(void);
440 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
441 const double r, const double start, const double stop);
442 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
443 void phm_print(PHANTOM *phm);
444 #if HAVE_INTERACTIVE_GRAPHICS
445 void phm_show(const PHANTOM *phm);
446 void phm_draw(const PHANTOM *phm);
449 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
450 const int nsample, const int trace);
451 int inside_obj(const PHMELEM *obj, double x, double y, const int coord_type);
453 void herm_head(PHANTOM *phm);
454 void row_head(PHANTOM *phm);
455 void row_bord_head(PHANTOM *phm);
457 DETECTOR *detect_create(const PHANTOM *phm, int ndet, int nview, int nsample, const double rot_anglen);
458 void detect_free(DETECTOR *det);
459 double calc_rsum(const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
460 double calc_objsum(const PHMELEM *obj, const double x1, const double y1, const double x2, const double y2);
461 int clipobj(const PHMELEM *obj, double *x1, double *y1, double *x2, double *y2);
463 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view,
464 const int trace, const int unit_pulse);
465 void rayview(const PHANTOM *phm, DETARRAY *darray, const DETECTOR *det,
466 const double xd1, const double yd1, const double xd2, const double yd2,
467 const double xs1, const double ys1, const double xs2, const double ys2, const int unit_pulse);
468 void rs_trace_showprm (const char *label, const char *fmt, int row, int color, ...);
470 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
471 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
472 RAYSUM *raysum_open(const char *filename);
473 void raysum_alloc_views(RAYSUM *rs);
474 void raysum_free(RAYSUM *rs);
475 int raysum_is_open(RAYSUM *rs);
476 int raysum_close(RAYSUM *rs);
477 int raysum_read_header(RAYSUM *rs);
478 int raysum_write_header(RAYSUM *rs);
479 int raysum_read(RAYSUM *rs);
480 int raysum_write(RAYSUM *rs);
481 DETARRAY *detarray_alloc(const int n);
482 void detarray_free(DETARRAY *darray);
483 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
484 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
485 int raysum_print(const RAYSUM *rs);