1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ir.h,v 1.8 2000/05/04 04:25:55 kevin Exp $
7 ** Revision 1.8 2000/05/04 04:25:55 kevin
8 ** Renamed phantom and phantom-element functions/variables
10 ** Revision 1.7 2000/05/03 19:51:41 kevin
11 ** function renaming for phantoms and phantom elements
13 ** Revision 1.6 2000/05/03 08:49:49 kevin
16 ** Revision 1.5 2000/05/02 20:00:25 kevin
17 ** *** empty log message ***
19 ** Revision 1.4 2000/05/02 15:31:39 kevin
22 ** Revision 1.3 2000/04/29 23:24:29 kevin
23 ** *** empty log message ***
25 ** Revision 1.2 2000/04/28 14:14:16 kevin
26 ** *** empty log message ***
28 ** Revision 1.1.1.1 2000/04/28 13:02:43 kevin
29 ** Initial CVS import for first public release
33 ** This program is free software; you can redistribute it and/or modify
34 ** it under the terms of the GNU General Public License (version 2) as
35 ** published by the Free Software Foundation.
37 ** This program is distributed in the hope that it will be useful,
38 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
39 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
40 ** GNU General Public License for more details.
42 ** You should have received a copy of the GNU General Public License
43 ** along with this program; if not, write to the Free Software
44 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
45 ******************************************************************************/
46 /* FILE IDENTIFICATION
48 * Name: ir.h Header File for Image Reconstruction System
49 * Programmer: Kevin Rosenberg
50 * Date Started: 7-1-84
51 * Last Change: 1-20-85
58 #define MPI_MAX_PROCESS 128
63 int base_local_work_units;
64 int remainder_work_units;
65 int local_work_units[MPI_MAX_PROCESS];
66 int start_work_unit[MPI_MAX_PROCESS];
70 extern struct mpi_ct_st mpi_ct;
71 void mpi_ct_calc_work_units(const unsigned int global_work_units);
76 int *b; /* Histogram array (# of elements in each bin) */
77 int nbin; /* Number of histogram bins */
78 double xmin, xmax, xinc; /* Limits of histogram boundaries */
81 typedef struct histo_st HISTOGRAM;
83 /*---------------------------------------------------------------------------*/
85 #define POINTS_PER_CIRCLE 36
88 #define LENREMARK (MAXREMARK+1)
89 #define IMAGE_VAL FMTX_2D /* use 2d floating point matrix */
90 #define IMAGE_ELEM_TYPE DT_FLOAT /* use floats for images */
91 typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
94 IMAGE_VAL v; /* values of voxels in matrix form */
95 SDF_2D *dfp_2d; /* Pointer to disk image file */
96 int nx, ny; /* size of voxel matrix */
97 double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
98 char remark[LENREMARK]; /* description of voxel data */
99 float calctime; /* time to calculate voxels in seconds */
103 int type; /* phmelem type (box, ellipse, etc) */
104 double atten; /* X-ray attenuation coefficient */
105 double cx,cy; /* center of phmelem */
106 double u,v; /* size of phmelem */
107 double rot; /* phmelem rotation angle (in radians) */
108 double *x, *y; /* ptr to array of points in obj world coord */
109 int pts; /* number of points in outline arrays */
110 double xmin, xmax, ymin, ymax; /* phmelem limits */
111 double radius; /* " */
112 struct { /* transform matrices */
113 GRFMTX_2D p_to_o; /* map from phantom to standard phmelem coords */
114 GRFMTX_2D o_to_p; /* map from std phmelem coords to phantom coords */
116 struct phmelem_st *next; /* pointer to next phmelem in phantom */
119 typedef struct phmelem_st PHMELEM;
121 struct phm_st { /* Phantom structure */
122 PHMELEM *phmelem_list; /* phmelem linked-list */
124 int n_pelm; /* number of phmelems in phantom */
125 double xmin, xmax, ymin, ymax; /* extent of phmelems in phmelem coordinates */
126 double radius; /* " " */
129 typedef struct image_st IMAGE;
130 typedef struct phm_st PHANTOM;
132 #define P_PHMELEMS 0 /* PHANTOM made of phmelems */
133 #define P_UNIT_PULSE 1 /* Special PHANTOM, not made of phmelems */
134 #define P_FILTER 9 /* defined only by a type */
136 /*----------------------------------------------------------------------*/
138 /*----------------------------------------------------------------------*/
140 /* Ray sums are collected along an array of ndet detectors. The data
141 * for these detectors is stored in the structure DETECTARRAY
144 #define DETECT_TYPE float
147 DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
148 int ndet; /* Number of detectors in array */
149 double view_angle; /* View angle in radians */
152 #define DETECTOR_PARALLEL 1
153 #define DETECTOR_EQUIANGLE 2
154 #define DETECTOR_EQUILINEAR 3
157 int geometry; /* Geometry of detectory */
158 int ndet; /* Number of detectors in array */
159 int nview; /* Number of rotated views */
160 int nsample; /* Number of rays per detector */
161 double detlen; /* Total length of detector array */
162 double rotlen; /* Rotation angle length in radians (norm 2PI) */
163 double det_inc; /* Increment between centers of detectors */
164 double rot_inc; /* Increment in rotation angle between views */
165 double radius; /* Radius of rotation. Distance from */
166 /* center of phm to center of det */
167 double phmlen; /* Maximum Length of PHANTOM or area of interest */
169 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
170 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
171 double angle; /* Starting angle */
179 struct detarray_st **view; /* Pointer to array of detarray_st pointers */
181 char remark[LENREMARK]; /* description of raysum data */
182 double calctime; /* time required to calculate raysums */
184 int ndet; /* number of detectors in array */
185 int nview; /* number of rotated views */
186 double rot_start; /* starting view rotation */
187 double rot_inc; /* angle between rotations */
188 double det_start; /* distance of beginning detector to center */
190 double det_inc; /* increment between detectors */
191 double phmlen; /* Length of PHANTOM edge (phm is square) */
194 typedef struct detarray_st DETARRAY;
195 typedef struct detect_st DETECTOR;
196 typedef struct raysum_st RAYSUM;
198 /*----------------------------------------------------------------------*/
200 /*----------------------------------------------------------------------*/
202 /* codes for phmelem types, passed to add_obj() */
204 #define O_RECTANGLE 1
210 /* Codes for Coordinate Types */
211 /* Defines coords for pelm_is_point_inside() */
213 #define PELM_COORD -1 /* Normalized Phmelem Coordinates */
214 #define PHM_COORD -2 /* User's PHANTOM Coordinates */
216 /* Codes for Filter types */
218 #define W_BANDLIMIT 1 /* filter types for genfilter() */
220 #define W_G_HAMMING 3
224 #define W_A_BANDLIMIT 11 /* filters times abs() of function */
226 #define W_AG_HAMMING 13
227 #define W_A_COSINE 14
231 /* function domains */
233 #define O_FREQ_STR "freq"
234 #define O_SPATIAL_STR "spatial"
236 #define D_FREQ 1 /* Domain names */
239 /* function symmetry */
241 #define FUNC_EVEN 1 /* function types, f[-n] = f[n] */
242 #define FUNC_ODD 2 /* f[-n] = -f[n] */
243 #define FUNC_BOTH 3 /* function has both odd & even components */
245 /* interpolation methods */
247 #define I_NEAREST 1 /* Interpolation methods */
248 #define I_LINEAR 2 /* Linear interpolation */
250 #define I_1BSPLINE 3 /* 1st order B-Spline */
254 /* Constants for sizing PHANTOM */
256 #define PERCENT_PHM_SIZE_INCR 0.0 /* Fractional increase in PHANTOM */
257 /* limits compared to phmelem size */
258 #define N_EXTRA_DETECTORS 4 /* Number of extra detectors */
259 /* widths when calculating detlen */
261 #define O_TRACE_NONE_STR "none"
262 #define O_TRACE_TEXT_STR "text"
263 #define O_TRACE_PHM_STR "phm"
264 #define O_TRACE_RAYS_STR "rays"
265 #define O_TRACE_PLOT_STR "plot"
266 #define O_TRACE_CLIPPING_STR "clipping"
269 #define TRACE_NONE 0 /* No tracing */
270 #define TRACE_TEXT 1 /* Minimal status */
271 #define TRACE_PHM 2 /* Show PHANTOM */
272 #define TRACE_RAYS 3 /* Show all rays */
273 #define TRACE_PLOT 4 /* Plot raysums */
274 #define TRACE_CLIPPING 5 /* Plot clipping */
276 #define O_PHM_HERMAN 1 /* Herman head phantom */
277 #define O_PHM_ROWLAND 2 /* Rowland head phantom */
278 #define O_PHM_BROWLAND 3 /* Bordered Rowland head phantom */
279 #define O_PHM_UNITPULSE 4 /* Unit pulse phantom */
281 #define O_PHM_HERMAN_STR "herman"
282 #define O_PHM_ROWLAND_STR "rowland"
283 #define O_PHM_BROWLAND_STR "browland"
284 #define O_PHM_UNITPULSE_STR "unitpulse"
286 #define O_INTERP_NEAREST_STR "nearest"
287 #define O_INTERP_LINEAR_STR "linear"
288 #define O_INTERP_BSPLINE_STR "bspline"
290 #define O_FILTER_ABS_BANDLIMIT_STR "abs_bandlimit"
291 #define O_FILTER_ABS_SINC_STR "abs_sinc"
292 #define O_FILTER_ABS_COS_STR "abs_cos"
293 #define O_FILTER_ABS_HAMMING_STR "abs_hamming"
294 #define O_FILTER_SHEPP_STR "shepp"
295 #define O_FILTER_BANDLIMIT_STR "bandlimit"
296 #define O_FILTER_SINC_STR "sinc"
297 #define O_FILTER_COS_STR "cos"
298 #define O_FILTER_HAMMING_STR "hamming"
299 #define O_FILTER_TRIANGLE_STR "triangle"
301 #define O_BPROJ_TRIG 1
302 #define O_BPROJ_TABLE 2
303 #define O_BPROJ_DIFF 3
304 #define O_BPROJ_DIFF2 4
305 #define O_BPROJ_IDIFF2 5
307 #define O_BPROJ_TRIG_STR "trig"
308 #define O_BPROJ_TABLE_STR "table"
309 #define O_BPROJ_DIFF_STR "diff"
310 #define O_BPROJ_DIFF2_STR "diff2"
311 #define O_BPROJ_IDIFF2_STR "idiff2"
313 #define RAYSUM_TRACE_ROW_TITLE 1
314 #define RAYSUM_TRACE_ROW_TITLE2 2
315 #define RAYSUM_TRACE_ROW_PHANT_ID 4
316 #define RAYSUM_TRACE_ROW_CHROMATIC 7
317 #define RAYSUM_TRACE_ROW_SCATTER 8
318 #define RAYSUM_TRACE_ROW_PHOT_STAT 9
319 #define RAYSUM_TRACE_ROW_NDET 12
320 #define RAYSUM_TRACE_ROW_NVIEW 13
321 #define RAYSUM_TRACE_ROW_SAMPLES 14
322 #define RAYSUM_TRACE_ROW_CURR_VIEW 17
323 #define RAYSUM_TRACE_ROW_ATTEN 18
326 /*----------------------------------------------------------------------*/
327 /* GRAY SCALE STRUCTURES */
328 /*----------------------------------------------------------------------*/
330 #define GS_MAX_CELL_SIZE 4
332 typedef int GS_BITMASK[4][4];
334 struct greyscale_st {
335 int dev; /* Device to output to */
336 int (*dotfunc)(int x, int y, int color); /* Pointer to dot function for device */
337 int cur_x, cur_y; /* Current cell location */
338 int nxcell, nycell; /* size of cell in pixels */
339 int xmin, ymin; /* starting position of grey scale */
340 int num_color; /* Number of primary colors available */
341 int num_intens; /* Number of intensities available */
342 int max_level; /* gs levels range from 0 to max_level */
343 char *fg_color_tbl; /* Hold foreground color for each level */
344 char *bg_color_tbl; /* Holds background color */
345 char *level_sub_tbl; /* Holds value to subtract for level */
346 /* before accessing bit mask */
347 GS_BITMASK *bm; /* Holds grey-scale bit mask */
348 struct greyscale_st *next_dev; /* Pointer to next open device */
349 /* == NULL when no more devices */
352 typedef struct greyscale_st GREYSCALE;
355 /* From reconstr.c */
356 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);
359 void backproj_init (const RAYSUM *rs, IMAGE *im, const int bproj_method);
360 int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
361 const int interp_type, const int bproj_method);
362 void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
364 void backproj_init_trig (const RAYSUM *rs, IMAGE *im);
365 int backproj_calc_trig (const RAYSUM *rs, IMAGE *im, const double *t,
366 const double view_angle, const int interp_type);
367 void backproj_term_trig (const RAYSUM *rs, IMAGE *im);
368 void backproj_init_table (const RAYSUM *rs, IMAGE *im);
369 int backproj_calc_table (const RAYSUM *rs, IMAGE *im, const double *t,
370 const double view_angle, const int interp_type);
371 void backproj_term_table (const RAYSUM *rs, IMAGE *im);
372 void backproj_init_d (const RAYSUM *rs, IMAGE *im);
373 int backproj_calc_d (const RAYSUM *rs, IMAGE *im, const double *t,
374 const double view_angle, const int interp_type);
375 void backproj_term_d (const RAYSUM *rs, IMAGE *im);
376 void backproj_init_d2 (const RAYSUM *rs, IMAGE *im);
377 int backproj_calc_d2 (const RAYSUM *rs, IMAGE *im, const double *t,
378 const double view_angle, const int interp_type);
379 void backproj_term_d2 (const RAYSUM *rs, IMAGE *im);
380 void backproj_init_id (const RAYSUM *rs, IMAGE *im);
381 int backproj_calc_id (const RAYSUM *rs, IMAGE *im, const double *t,
382 const double view_angle, const int interp_type);
383 void backproj_term_id (const RAYSUM *rs, IMAGE *im);
384 void backproj_init_id2 (const RAYSUM *rs, IMAGE *im);
385 int backproj_calc_id2 (const RAYSUM *rs, IMAGE *im, const double *t,
386 const double view_angle, const int interp_type);
387 void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
389 void usage (const char *program);
390 int main(const int argc, char * const argv[]);
395 int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
398 double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const int func_type);
399 double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
400 void rotate2d(double x[], double y[], int pts, double angle);
401 void xlat2d(double x[], double y[], int pts, double xoffset, double yoffset);
402 void scale2d(double x[], double y[], int pts, double xfact, double yfact);
403 int circle_pts(double theta);
406 int phm_add_pelm_kb(PHANTOM *phm);
407 PHANTOM *phm_select(void);
408 int interpolation_select(void);
409 int filter_select(double *filter_param);
412 double *filter_generate(int filt_type, double bw, double xmin, double xmax, int n, double param, int domain, int numint);
413 double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
414 double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
415 double filter_frequency_response(int filt_type, double u, double bw, double param);
416 double sinc(double x, double mult);
417 double integral_abscos(double u, double w);
420 IMAGE *image_create(const char *fname, const int nx, const int ny);
421 int image_clear(IMAGE *im);
422 int image_save(IMAGE *im);
423 IMAGE *image_load(const char *fname);
424 void image_filter_response(IMAGE *im, int domain, double bw, int filt_type, double filt_param, int opt_trace);
427 int opt_set_trace(const char *optarg, const char *program);
428 const char *name_of_phantom(const int phmid);
429 int opt_set_phantom(const char *optarg, const char *program);
430 int opt_set_interpolation(const char *optarg, const char *program);
431 const char *name_of_interpolation(int interp_type);
432 int opt_set_filter(const char *optarg, const char *program);
433 const char *name_of_filter(const int filter);
434 int opt_set_filter_domain(const char *optarg, const char *program);
435 const char *name_of_filter_domain(const int domain);
436 int opt_set_backproj(const char *optarg, const char *program);
437 const char *name_of_backproj(const int backproj);
440 PHANTOM *phm_create(const int phmid);
441 PHANTOM *phm_create_from_file(const char *fname);
442 PHANTOM *phm_init(void);
443 int phm_add_pelm_file(PHANTOM *phm, const char *fname);
444 void phm_add_pelm (PHANTOM *phm, const int 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(PHMELEM *obj);
447 void pelm_make_xform (PHMELEM *obj);
448 PHMELEM *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 void phm_print(PHANTOM *phm);
453 #if HAVE_INTERACTIVE_GRAPHICS
454 void phm_show(const PHANTOM *phm);
455 void phm_draw(const PHANTOM *phm);
459 void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
460 const int nsample, const int trace);
461 int pelm_is_point_inside(const PHMELEM *obj, double x, double y, const int coord_type);
464 void phm_std_herman (PHANTOM *phm);
465 void phm_std_rowland (PHANTOM *phm);
466 void phm_std_rowland_bordered (PHANTOM *phm);
469 int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
470 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);
471 double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
472 double pelm_ray_attenuation (const PHMELEM *obj, const double x1, const double y1, const double x2, const double y2);
473 int pelm_clip_line (const PHMELEM *obj, double *x1, double *y1, double *x2, double *y2);
474 void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
477 DETECTOR *detect_create(const PHANTOM *phm, int ndet, int nview, int nsample, const double rot_anglen);
478 void detect_free(DETECTOR *det);
481 RAYSUM *raysum_create(const char *fname, const int nview, const int ndet);
482 RAYSUM *raysum_create_from_det(const char *fname, const DETECTOR *det);
483 RAYSUM *raysum_open(const char *filename);
484 void raysum_alloc_views(RAYSUM *rs);
485 void raysum_free(RAYSUM *rs);
486 int raysum_is_open(RAYSUM *rs);
487 int raysum_close(RAYSUM *rs);
488 int raysum_read_header(RAYSUM *rs);
489 int raysum_write_header(RAYSUM *rs);
490 int raysum_read(RAYSUM *rs);
491 int raysum_write(RAYSUM *rs);
492 DETARRAY *detarray_alloc(const int n);
493 void detarray_free(DETARRAY *darray);
494 int detarray_read(RAYSUM *rs, DETARRAY *darray, const int view_num);
495 int detarray_write(RAYSUM *rs, const DETARRAY *darray, const int view_num);
496 int raysum_print(const RAYSUM *rs);