1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.9 2000/05/04 04:29:18 kevin Exp $
7 ** Revision 1.9 2000/05/04 04:29:18 kevin
8 ** *** empty log message ***
10 ** Revision 1.8 2000/05/04 04:25:55 kevin
11 ** Renamed phantom and phantom-element functions/variables
13 ** Revision 1.7 2000/05/03 19:51:41 kevin
14 ** function renaming for phantoms and phantom elements
16 ** Revision 1.6 2000/05/03 08:49:49 kevin
19 ** Revision 1.5 2000/05/02 20:00:25 kevin
20 ** *** empty log message ***
22 ** Revision 1.4 2000/05/02 15:31:39 kevin
25 ** Revision 1.3 2000/04/29 23:24:29 kevin
26 ** *** empty log message ***
28 ** Revision 1.2 2000/04/28 14:14:16 kevin
29 ** *** empty log message ***
31 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
32 ** Initial CVS import for first public release
36 ** This program is free software; you can redistribute it and/or modify
37 ** it under the terms of the GNU General Public License (version 2) as
38 ** published by the Free Software Foundation.
40 ** This program is distributed in the hope that it will be useful,
41 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
42 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
43 ** GNU General Public License for more details.
45 ** You should have received a copy of the GNU General Public License
46 ** along with this program; if not, write to the Free Software
47 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
48 ******************************************************************************/
49 /* FILE IDENTIFICATION
51 * Name: ir.h Header File for Image Reconstruction System
52 * Programmer: Kevin Rosenberg
53 * Date Started: 7-1-84
54 * Last Change: 1-20-85
61 #define MPI_MAX_PROCESS 128
66 int base_local_work_units;
67 int remainder_work_units;
68 int local_work_units[MPI_MAX_PROCESS];
69 int start_work_unit[MPI_MAX_PROCESS];
73 extern struct mpi_ct_st mpi_ct;
74 void mpi_ct_calc_work_units(const unsigned int global_work_units);
79 int *b; /* Histogram array (# of elements in each bin) */
80 int nbin; /* Number of histogram bins */
81 double xmin, xmax, xinc; /* Limits of histogram boundaries */
84 typedef struct histo_st HISTOGRAM;
86 /*---------------------------------------------------------------------------*/
88 #define POINTS_PER_CIRCLE 36
91 #define LENREMARK (MAXREMARK+1)
92 #define IMAGE_VAL FMTX_2D /* use 2d floating point matrix */
93 #define IMAGE_ELEM_TYPE DT_FLOAT /* use floats for images */
94 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
97 IMAGE_VAL v; /* values of voxels in matrix form */
98 SDF_2D *dfp_2d; /* Pointer to disk image file */
99 int nx, ny; /* size of voxel matrix */
100 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
101 char remark[LENREMARK]; /* description of voxel data */
102 float calctime; /* time to calculate voxels in seconds */
106 int type; /* phmelm type (box, ellipse, etc) */
107 double atten; /* X-ray attenuation coefficient */
108 double cx,cy; /* center of phmelm */
109 double u,v; /* size of phmelm */
110 double rot; /* phmelm rotation angle (in radians) */
111 double *x, *y; /* ptr to array of points in obj world coord */
112 int pts; /* number of points in outline arrays */
113 double xmin, xmax, ymin, ymax; /* phmelm limits */
114 double radius; /* " */
115 struct { /* transform matrices */
116 GRFMTX_2D p_to_o; /* map from phantom to standard phmelm coords */
117 GRFMTX_2D o_to_p; /* map from std phmelm coords to phantom coords */
119 struct phmelm_st *next; /* pointer to next phmelm in phantom */
122 typedef struct phmelm_st PHMELM;
124 struct phm_st { /* Phantom structure */
125 PHMELM *phmelm_list; /* phmelm linked-list */
127 int n_pelm; /* number of phmelms in phantom */
128 double xmin, xmax, ymin, ymax; /* extent of phmelms in phmelm coordinates */
129 double radius; /* " " */
132 typedef struct image_st IMAGE;
133 typedef struct phm_st PHANTOM;
135 #define P_PHMELMS 0 /* Phantom made of phmelms */
136 #define P_UNIT_PULSE 1 /* Special PHANTOM, not made of phmelms */
137 #define P_FILTER 9 /* defined only by a type */
139 /*----------------------------------------------------------------------*/
141 /*----------------------------------------------------------------------*/
143 /* Ray sums are collected along an array of ndet detectors. The data
144 * for these detectors is stored in the structure DETECTARRAY
147 #define DETECT_TYPE float
150 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
151 int ndet; /* Number of detectors in array */
152 double view_angle; /* View angle in radians */
155 #define DETECTOR_PARALLEL 1
156 #define DETECTOR_EQUIANGLE 2
157 #define DETECTOR_EQUILINEAR 3
160 int geometry; /* Geometry of detectory */
161 int ndet; /* Number of detectors in array */
162 int nview; /* Number of rotated views */
163 int nsample; /* Number of rays per detector */
164 double detlen; /* Total length of detector array */
165 double rotlen; /* Rotation angle length in radians (norm 2PI) */
166 double det_inc; /* Increment between centers of detectors */
167 double rot_inc; /* Increment in rotation angle between views */
168 double radius; /* Radius of rotation. Distance from */
169 /* center of phm to center of det */
170 double phmlen; /* Maximum Length of PHANTOM or area of interest */
172 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
173 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
174 double angle; /* Starting angle */
182 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
184 char remark[LENREMARK]; /* description of raysum data */
185 double calctime; /* time required to calculate raysums */
187 int ndet; /* number of detectors in array */
188 int nview; /* number of rotated views */
189 double rot_start; /* starting view rotation */
190 double rot_inc; /* angle between rotations */
191 double det_start; /* distance of beginning detector to center */
193 double det_inc; /* increment between detectors */
194 double phmlen; /* Length of PHANTOM edge (phm is square) */
197 typedef struct detarray_st DETARRAY;
198 typedef struct detect_st DETECTOR;
199 typedef struct raysum_st RAYSUM;
201 /*----------------------------------------------------------------------*/
203 /*----------------------------------------------------------------------*/
205 /* codes for phmelm types, passed to add_obj() */
207 #define O_RECTANGLE 1
213 /* Codes for Coordinate Types */
214 /* Defines coords for pelm_is_point_inside() */
216 #define PELM_COORD -1 /* Normalized Phmelm Coordinates */
217 #define PHM_COORD -2 /* User's PHANTOM Coordinates */
219 /* Codes for Filter types */
221 #define W_BANDLIMIT 1 /* filter types for genfilter() */
223 #define W_G_HAMMING 3
227 #define W_A_BANDLIMIT 11 /* filters times abs() of function */
229 #define W_AG_HAMMING 13
230 #define W_A_COSINE 14
234 /* function domains */
236 #define O_FREQ_STR "freq"
237 #define O_SPATIAL_STR "spatial"
239 #define D_FREQ 1 /* Domain names */
242 /* function symmetry */
244 #define FUNC_EVEN 1 /* function types, f[-n] = f[n] */
245 #define FUNC_ODD 2 /* f[-n] = -f[n] */
246 #define FUNC_BOTH 3 /* function has both odd & even components */
248 /* interpolation methods */
250 #define I_NEAREST 1 /* Interpolation methods */
251 #define I_LINEAR 2 /* Linear interpolation */
253 #define I_1BSPLINE 3 /* 1st order B-Spline */
257 /* Constants for sizing PHANTOM */
259 #define PERCENT_PHM_SIZE_INCR 0.0 /* Fractional increase in PHANTOM */
260 /* limits compared to phmelm size */
261 #define N_EXTRA_DETECTORS 4 /* Number of extra detectors */
262 /* widths when calculating detlen */
264 #define O_TRACE_NONE_STR "none"
265 #define O_TRACE_TEXT_STR "text"
266 #define O_TRACE_PHM_STR "phm"
267 #define O_TRACE_RAYS_STR "rays"
268 #define O_TRACE_PLOT_STR "plot"
269 #define O_TRACE_CLIPPING_STR "clipping"
272 #define TRACE_NONE 0 /* No tracing */
273 #define TRACE_TEXT 1 /* Minimal status */
274 #define TRACE_PHM 2 /* Show PHANTOM */
275 #define TRACE_RAYS 3 /* Show all rays */
276 #define TRACE_PLOT 4 /* Plot raysums */
277 #define TRACE_CLIPPING 5 /* Plot clipping */
279 #define O_PHM_HERMAN 1 /* Herman head phantom */
280 #define O_PHM_ROWLAND 2 /* Rowland head phantom */
281 #define O_PHM_BROWLAND 3 /* Bordered Rowland head phantom */
282 #define O_PHM_UNITPULSE 4 /* Unit pulse phantom */
284 #define O_PHM_HERMAN_STR "herman"
285 #define O_PHM_ROWLAND_STR "rowland"
286 #define O_PHM_BROWLAND_STR "browland"
287 #define O_PHM_UNITPULSE_STR "unitpulse"
289 #define O_INTERP_NEAREST_STR "nearest"
290 #define O_INTERP_LINEAR_STR "linear"
291 #define O_INTERP_BSPLINE_STR "bspline"
293 #define O_FILTER_ABS_BANDLIMIT_STR "abs_bandlimit"
294 #define O_FILTER_ABS_SINC_STR "abs_sinc"
295 #define O_FILTER_ABS_COS_STR "abs_cos"
296 #define O_FILTER_ABS_HAMMING_STR "abs_hamming"
297 #define O_FILTER_SHEPP_STR "shepp"
298 #define O_FILTER_BANDLIMIT_STR "bandlimit"
299 #define O_FILTER_SINC_STR "sinc"
300 #define O_FILTER_COS_STR "cos"
301 #define O_FILTER_HAMMING_STR "hamming"
302 #define O_FILTER_TRIANGLE_STR "triangle"
304 #define O_BPROJ_TRIG 1
305 #define O_BPROJ_TABLE 2
306 #define O_BPROJ_DIFF 3
307 #define O_BPROJ_DIFF2 4
308 #define O_BPROJ_IDIFF2 5
310 #define O_BPROJ_TRIG_STR "trig"
311 #define O_BPROJ_TABLE_STR "table"
312 #define O_BPROJ_DIFF_STR "diff"
313 #define O_BPROJ_DIFF2_STR "diff2"
314 #define O_BPROJ_IDIFF2_STR "idiff2"
316 #define RAYSUM_TRACE_ROW_TITLE 1
317 #define RAYSUM_TRACE_ROW_TITLE2 2
318 #define RAYSUM_TRACE_ROW_PHANT_ID 4
319 #define RAYSUM_TRACE_ROW_CHROMATIC 7
320 #define RAYSUM_TRACE_ROW_SCATTER 8
321 #define RAYSUM_TRACE_ROW_PHOT_STAT 9
322 #define RAYSUM_TRACE_ROW_NDET 12
323 #define RAYSUM_TRACE_ROW_NVIEW 13
324 #define RAYSUM_TRACE_ROW_SAMPLES 14
325 #define RAYSUM_TRACE_ROW_CURR_VIEW 17
326 #define RAYSUM_TRACE_ROW_ATTEN 18
329 /*----------------------------------------------------------------------*/
330 /* GRAY SCALE STRUCTURES */
331 /*----------------------------------------------------------------------*/
333 #define GS_MAX_CELL_SIZE 4
335 typedef int GS_BITMASK[4][4];
337 struct greyscale_st {
338 int dev; /* Device to output to */
339 int (*dotfunc)(int x, int y, int color); /* Pointer to dot function for device */
340 int cur_x, cur_y; /* Current cell location */
341 int nxcell, nycell; /* size of cell in pixels */
342 int xmin, ymin; /* starting position of grey scale */
343 int num_color; /* Number of primary colors available */
344 int num_intens; /* Number of intensities available */
345 int max_level; /* gs levels range from 0 to max_level */
346 char *fg_color_tbl; /* Hold foreground color for each level */
347 char *bg_color_tbl; /* Holds background color */
348 char *level_sub_tbl; /* Holds value to subtract for level */
349 /* before accessing bit mask */
350 GS_BITMASK *bm; /* Holds grey-scale bit mask */
351 struct greyscale_st *next_dev; /* Pointer to next open device */
352 /* == NULL when no more devices */
355 typedef struct greyscale_st GREYSCALE;
358 /* From reconstr.c */
359 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);
362 void backproj_init (const RAYSUM *rs, IMAGE *im, const int bproj_method);
363 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
364 const int interp_type, const int bproj_method);
365 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
367 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
368 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
369 const double view_angle, const int interp_type);
370 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
371 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
372 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
373 const double view_angle, const int interp_type);
374 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
375 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
376 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
377 const double view_angle, const int interp_type);
378 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
379 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
380 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
381 const double view_angle, const int interp_type);
382 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
383 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
384 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
385 const double view_angle, const int interp_type);
386 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
387 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
388 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
389 const double view_angle, const int interp_type);
390 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
392 void usage (const char *program);
393 int main(const int argc, char * const argv[]);
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 int func_type);
402 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
403 void rotate2d(double x[], double y[], int pts, double angle);
404 void xlat2d(double x[], double y[], int pts, double xoffset, double yoffset);
405 void scale2d(double x[], double y[], int pts, double xfact, double yfact);
406 int circle_pts(double theta);
409 int phm_add_pelm_kb(PHANTOM *phm);
410 PHANTOM *phm_select(void);
411 int interpolation_select(void);
412 int filter_select(double *filter_param);
415 double *filter_generate(int filt_type, double bw, double xmin, double xmax, int n, double param, int domain, int numint);
416 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
417 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
418 double filter_frequency_response(int filt_type, double u, double bw, double param);
419 double sinc(double x, double mult);
420 double integral_abscos(double u, double w);
423 IMAGE *image_create(const char *fname, const int nx, const int ny);
424 int image_clear(IMAGE *im);
425 int image_save(IMAGE *im);
426 IMAGE *image_load(const char *fname);
427 void image_filter_response(IMAGE *im, int domain, double bw, int filt_type, double filt_param, int opt_trace);
430 int opt_set_trace(const char *optarg, const char *program);
431 const char *name_of_phantom(const int phmid);
432 int opt_set_phantom(const char *optarg, const char *program);
433 int opt_set_interpolation(const char *optarg, const char *program);
434 const char *name_of_interpolation(int interp_type);
435 int opt_set_filter(const char *optarg, const char *program);
436 const char *name_of_filter(const int filter);
437 int opt_set_filter_domain(const char *optarg, const char *program);
438 const char *name_of_filter_domain(const int domain);
439 int opt_set_backproj(const char *optarg, const char *program);
440 const char *name_of_backproj(const int backproj);
443 PHANTOM *phm_create(const int phmid);
444 PHANTOM *phm_create_from_file(const char *fname);
445 PHANTOM *phm_init(void);
446 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
447 void phm_add_pelm (PHANTOM *phm, const int type, const double cx, const double cy,
448 const double u, const double v, const double rot, const double atten);
449 int pelm_make_points(PHMELM *obj);
450 void pelm_make_xform (PHMELM *obj);
451 PHMELM *pelm_alloc(void);
452 void calc_arc(double x[], double y[], const int pts, const double xcent, const double ycent,
453 const double r, const double start, const double stop);
454 void calc_ellipse(double x[], double y[], const int pts, const double u, const double v);
455 void phm_print(PHANTOM *phm);
456 #if HAVE_INTERACTIVE_GRAPHICS
457 void phm_show(const PHANTOM *phm);
458 void phm_draw(const PHANTOM *phm);
462 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
463 const int nsample, const int trace);
464 int pelm_is_point_inside(const PHMELM *obj, double x, double y, const int coord_type);
467 void phm_std_herman (PHANTOM *phm);
468 void phm_std_rowland (PHANTOM *phm);
469 void phm_std_rowland_bordered (PHANTOM *phm);
472 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
473 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);
474 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
475 double pelm_ray_attenuation (const PHMELM *obj, const double x1, const double y1, const double x2, const double y2);
476 int pelm_clip_line (const PHMELM *obj, double *x1, double *y1, double *x2, double *y2);
477 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
480 DETECTOR *detect_create(const PHANTOM *phm, int ndet, int nview, int nsample, const double rot_anglen);
481 void detect_free(DETECTOR *det);
484 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
485 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
486 RAYSUM *raysum_open(const char *filename);
487 void raysum_alloc_views(RAYSUM *rs);
488 void raysum_free(RAYSUM *rs);
489 int raysum_is_open(RAYSUM *rs);
490 int raysum_close(RAYSUM *rs);
491 int raysum_read_header(RAYSUM *rs);
492 int raysum_write_header(RAYSUM *rs);
493 int raysum_read(RAYSUM *rs);
494 int raysum_write(RAYSUM *rs);
495 DETARRAY *detarray_alloc(const int n);
496 void detarray_free(DETARRAY *darray);
497 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
498 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
499 int raysum_print(const RAYSUM *rs);