** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: ir.h,v 1.12 2000/05/07 12:46:19 kevin Exp $
+** $Id: ir.h,v 1.13 2000/05/08 20:00:48 kevin Exp $
** $Log: ir.h,v $
+** Revision 1.13 2000/05/08 20:00:48 kevin
+** ANSI C changes
+**
** Revision 1.12 2000/05/07 12:46:19 kevin
** made c++ compatible
**
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
******************************************************************************/
-/* FILE IDENTIFICATION
- *
- * Name: ir.h Header File for Image Reconstruction System
+
+/* ir.h Header File for Image Reconstruction System
* Programmer: Kevin Rosenberg
* Date Started: 7-1-84
- * Last Change: 1-20-85
*/
#ifndef IR_H
#endif /* __cplusplus */
#ifdef MPI_CT
-#define MPI_MAX_PROCESS 128
+#define MPI_MAX_PROCESS 128
struct mpi_ct_st
{
int my_rank;
/*---------------------------------------------------------------------------*/
-#define POINTS_PER_CIRCLE 36
+static const int POINTS_PER_CIRCLE=90;
+#define MAXREMARK 99
-#define MAXREMARK 99
-#define LENREMARK (MAXREMARK+1)
-#define IMAGE_VAL FMTX_2D /* use 2d floating point matrix */
-#define IMAGE_ELEM_TYPE DT_FLOAT /* use floats for images */
-typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
+typedef FMTX_2D IMAGE_ARRAY; /* use 2d floating point matrix */
+typedef float IMAGE_ELEM_VAL; /* use floats for image storing */
struct image_st {
- IMAGE_VAL v; /* values of voxels in matrix form */
+ IMAGE_ARRAY v; /* values of voxels in matrix form */
SDF_2D *dfp_2d; /* Pointer to disk image file */
int nx, ny; /* size of voxel matrix */
double xmin, xmax, ymin, ymax; /* extent of voxel matrix in phm coord */
- char remark[LENREMARK]; /* description of voxel data */
+ char remark[MAXREMARK+1]; /* description of voxel data */
float calctime; /* time to calculate voxels in seconds */
};
+typedef struct image_st IMAGE;
+
+typedef enum {
+ RECTANGLE,
+ TRIANGLE,
+ ELLIPSE,
+ SECTOR,
+ SEGMENT
+} PElmType;
struct pelm_st {
- int type; /* pelm type (box, ellipse, etc) */
+ PElmType type; /* pelm type (box, ellipse, etc) */
double atten; /* X-ray attenuation coefficient */
double cx,cy; /* center of pelm */
double u,v; /* size of pelm */
int pts; /* number of points in outline arrays */
double xmin, xmax, ymin, ymax; /* pelm limits */
double radius; /* " */
- struct { /* transform matrices */
- GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
- GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
- } xform;
- struct pelm_st *next; /* pointer to next pelm in phantom */
+ GRFMTX_2D p_to_o; /* map from phantom to standard pelm coords */
+ GRFMTX_2D o_to_p; /* map from std pelm coords to phantom coords */
+ struct pelm_st *next; /* pointer to next pelm in phantom */
};
-
typedef struct pelm_st PELM;
-struct phm_st { /* Phantom structure */
- PELM *pelm_list; /* pelm linked-list */
- int type;
- int n_pelm; /* number of pelms in phantom */
+typedef enum {
+ P_PELMS, /* Phantom made of Pelms */
+ P_UNIT_PULSE, /* Special phantom, not made of pelms */
+ P_FILTER /* defined only by this type */
+} PhmType;
+
+struct phm_st { /* Phantom structure */
+ PELM *pelm_list; /* pelm linked-list */
+ PhmType type;
+ int n_pelm; /* number of pelms in phantom */
double xmin, xmax, ymin, ymax; /* extent of pelms in pelm coordinates */
- double radius; /* " " */
+ double radius; /* " " */
};
-
-typedef struct image_st IMAGE;
typedef struct phm_st PHANTOM;
-#define P_PELMS 0 /* Phantom made of pelms */
-#define P_UNIT_PULSE 1 /* Special PHANTOM, not made of pelms */
-#define P_FILTER 9 /* defined only by a type */
/*----------------------------------------------------------------------*/
/* RAYSUM SYMBOLS */
* for these detectors is stored in the structure DETECTARRAY
*/
-#define DETECT_TYPE float
+typedef float DETECT_TYPE;
struct detarray_st {
DETECT_TYPE *detval; /* Pointer to array of values recorded by detector */
int ndet; /* Number of detectors in array */
double view_angle; /* View angle in radians */
};
+typedef struct detarray_st DETARRAY;
-#define DETECTOR_PARALLEL 1
-#define DETECTOR_EQUIANGLE 2
-#define DETECTOR_EQUILINEAR 3
+typedef enum {
+ DETECTOR_PARALLEL,
+ DETECTOR_EQUIANGLE,
+ DETECTOR_EQUILINEAR
+} ScannerGeometry;
+
struct detector_st {
- int geometry; /* Geometry of detectory */
+ ScannerGeometry geometry; /* Geometry of detectory */
int ndet; /* Number of detectors in array */
int nview; /* Number of rotated views */
int nsample; /* Number of rays per detector */
double rot_inc; /* Increment in rotation angle between views */
double radius; /* Radius of rotation. Distance from */
/* center of phm to center of det */
- double phmlen; /* Maximum Length of PHANTOM or area of interest */
+ double phmlen; /* Maximum Length of phantom or area of interest */
struct {
double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
double angle; /* Starting angle */
} init;
};
+typedef struct detector_st DETECTOR;
struct raysum_st {
int fd;
int geometry;
struct detarray_st **view; /* Pointer to array of detarray_st pointers */
- char remark[LENREMARK]; /* description of raysum data */
+ char remark[MAXREMARK+1]; /* description of raysum data */
double calctime; /* time required to calculate raysums */
int ndet; /* number of detectors in array */
double det_inc; /* increment between detectors */
double phmlen; /* Length of PHANTOM edge (phm is square) */
};
-
-typedef struct detarray_st DETARRAY;
-typedef struct detector_st DETECTOR;
typedef struct raysum_st RAYSUM;
/*----------------------------------------------------------------------*/
/* USER SYMBOLS */
/*----------------------------------------------------------------------*/
-/* codes for pelm types, passed to phm_add_pelm() */
-
-#define O_RECTANGLE 1
-#define O_TRIANGLE 2
-#define O_ELLIPSE 3
-#define O_SECTOR 4
-#define O_SEGMENT 5
-
/* Codes for Coordinate Types */
/* Defines coords for pelm_is_point_inside() */
-#define PELM_COORD -1 /* Normalized Pelm Coordinates */
-#define PHM_COORD -2 /* User's PHANTOM Coordinates */
+typedef enum {
+ PELM_COORD, /* Normalized Pelm Coordinates */
+ PHM_COORD /* User's phantom Coordinates */
+} CoordType;
/* Codes for Filter types */
-#define FILTER_BANDLIMIT 1 /* filter types for genfilter() */
-#define FILTER_SINC 2
-#define FILTER_G_HAMMING 3
-#define FILTER_COSINE 4
-#define FILTER_TRIANGLE 5
-#define FILTER_ABS_BANDLIMIT 11 /* filters times abs() of function */
-#define FILTER_ABS_SINC 12
-#define FILTER_ABS_G_HAMMING 13
-#define FILTER_ABS_COSINE 14
-#define FILTER_SHEPP 21
+typedef enum { /* filter types for filter_generate() */
+ FILTER_BANDLIMIT,
+ FILTER_SINC,
+ FILTER_G_HAMMING,
+ FILTER_COSINE,
+ FILTER_TRIANGLE,
+ FILTER_ABS_BANDLIMIT, /* filter times |x| */
+ FILTER_ABS_SINC,
+ FILTER_ABS_G_HAMMING,
+ FILTER_ABS_COSINE,
+ FILTER_SHEPP
+} FilterType;
/* function domains */
-#define O_FREQ_STR "freq"
-#define O_SPATIAL_STR "spatial"
+static const char D_FREQ_STR[]= "freq";
+static const char D_SPATIAL_STR[]= "spatial";
-#define D_FREQ 1 /* Domain names */
-#define D_SPATIAL 2
+typedef enum {
+ D_FREQ,
+ D_SPATIAL
+} DomainType;
-/* function symmetry */
-
-#define FUNC_EVEN 1 /* function types, f[-n] = f[n] */
-#define FUNC_ODD 2 /* f[-n] = -f[n] */
-#define FUNC_BOTH 3 /* function has both odd & even components */
+typedef enum {
+ FUNC_EVEN, /* function types, f[-n] = f[n] */
+ FUNC_ODD, /* f[-n] = -f[n] */
+ FUNC_BOTH /* function has both odd & even components */
+} FunctionSymmetry;
/* interpolation methods */
-
-#define I_NEAREST 1 /* Interpolation methods */
-#define I_LINEAR 2 /* Linear interpolation */
-#define I_BSPLINE 3
-#define I_1BSPLINE 3 /* 1st order B-Spline */
-#define I_2BSPLINE 4
-#define I_3BSPLINE 5
+typedef enum { /* Interpolation methods */
+ I_NEAREST, /* Nearest neighbor */
+ I_LINEAR, /* Linear interpolation */
+ I_BSPLINE,
+ I_1BSPLINE, /* 1st order B-Spline */
+ I_2BSPLINE,
+ I_3BSPLINE
+} InterpolationType;
/* Constants for sizing PHANTOM */
-#define PERCENT_PHM_SIZE_INCR 0.0 /* Fractional increase in PHANTOM */
- /* limits compared to pelm size */
-#define N_EXTRA_DETECTORS 4 /* Number of extra detectors */
- /* widths when calculating detlen */
-
-#define O_TRACE_NONE_STR "none"
-#define O_TRACE_TEXT_STR "text"
-#define O_TRACE_PHM_STR "phm"
-#define O_TRACE_RAYS_STR "rays"
-#define O_TRACE_PLOT_STR "plot"
-#define O_TRACE_CLIPPING_STR "clipping"
-
-
-#define TRACE_NONE 0 /* No tracing */
-#define TRACE_TEXT 1 /* Minimal status */
-#define TRACE_PHM 2 /* Show PHANTOM */
-#define TRACE_RAYS 3 /* Show all rays */
-#define TRACE_PLOT 4 /* Plot raysums */
-#define TRACE_CLIPPING 5 /* Plot clipping */
-
-#define O_PHM_HERMAN 1 /* Herman head phantom */
-#define O_PHM_ROWLAND 2 /* Rowland head phantom */
-#define O_PHM_BROWLAND 3 /* Bordered Rowland head phantom */
-#define O_PHM_UNITPULSE 4 /* Unit pulse phantom */
-
-#define O_PHM_HERMAN_STR "herman"
-#define O_PHM_ROWLAND_STR "rowland"
-#define O_PHM_BROWLAND_STR "browland"
-#define O_PHM_UNITPULSE_STR "unitpulse"
-
-#define O_INTERP_NEAREST_STR "nearest"
-#define O_INTERP_LINEAR_STR "linear"
-#define O_INTERP_BSPLINE_STR "bspline"
-
-#define O_FILTER_ABS_BANDLIMIT_STR "abs_bandlimit"
-#define O_FILTER_ABS_SINC_STR "abs_sinc"
-#define O_FILTER_ABS_COS_STR "abs_cos"
-#define O_FILTER_ABS_HAMMING_STR "abs_hamming"
-#define O_FILTER_SHEPP_STR "shepp"
-#define O_FILTER_BANDLIMIT_STR "bandlimit"
-#define O_FILTER_SINC_STR "sinc"
-#define O_FILTER_COS_STR "cos"
-#define O_FILTER_HAMMING_STR "hamming"
-#define O_FILTER_TRIANGLE_STR "triangle"
-
-#define O_BPROJ_TRIG 1
-#define O_BPROJ_TABLE 2
-#define O_BPROJ_DIFF 3
-#define O_BPROJ_DIFF2 4
-#define O_BPROJ_IDIFF2 5
-
-#define O_BPROJ_TRIG_STR "trig"
-#define O_BPROJ_TABLE_STR "table"
-#define O_BPROJ_DIFF_STR "diff"
-#define O_BPROJ_DIFF2_STR "diff2"
-#define O_BPROJ_IDIFF2_STR "idiff2"
-
-#define RAYSUM_TRACE_ROW_TITLE 1
-#define RAYSUM_TRACE_ROW_TITLE2 2
-#define RAYSUM_TRACE_ROW_PHANT_ID 4
-#define RAYSUM_TRACE_ROW_CHROMATIC 7
-#define RAYSUM_TRACE_ROW_SCATTER 8
-#define RAYSUM_TRACE_ROW_PHOT_STAT 9
-#define RAYSUM_TRACE_ROW_NDET 12
-#define RAYSUM_TRACE_ROW_NVIEW 13
-#define RAYSUM_TRACE_ROW_SAMPLES 14
-#define RAYSUM_TRACE_ROW_CURR_VIEW 17
-#define RAYSUM_TRACE_ROW_ATTEN 18
-
-
-/*----------------------------------------------------------------------*/
-/* GRAY SCALE STRUCTURES */
-/*----------------------------------------------------------------------*/
-
-#define GS_MAX_CELL_SIZE 4
-
-typedef int GS_BITMASK[4][4];
-
-struct greyscale_st {
- int dev; /* Device to output to */
- int (*dotfunc)(int x, int y, int color); /* Pointer to dot function for device */
- int cur_x, cur_y; /* Current cell location */
- int nxcell, nycell; /* size of cell in pixels */
- int xmin, ymin; /* starting position of grey scale */
- int num_color; /* Number of primary colors available */
- int num_intens; /* Number of intensities available */
- int max_level; /* gs levels range from 0 to max_level */
- char *fg_color_tbl; /* Hold foreground color for each level */
- char *bg_color_tbl; /* Holds background color */
- char *level_sub_tbl; /* Holds value to subtract for level */
- /* before accessing bit mask */
- GS_BITMASK *bm; /* Holds grey-scale bit mask */
- struct greyscale_st *next_dev; /* Pointer to next open device */
- /* == NULL when no more devices */
+static const double PERCENT_PHM_SIZE_INCR=0.0; /* Fractional increase in phantom limits compared to pelm size */
+static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
+
+static const char O_TRACE_NONE_STR[]= "none";
+static const char O_TRACE_TEXT_STR[]= "text";
+static const char O_TRACE_PHM_STR[]= "phm";
+static const char O_TRACE_RAYS_STR[]= "rays";
+static const char O_TRACE_PLOT_STR[]= "plot";
+static const char O_TRACE_CLIPPING_STR[]= "clipping";
+
+enum {
+ TRACE_NONE, /* No tracing */
+ TRACE_TEXT, /* Minimal status */
+ TRACE_PHM, /* Show phantom */
+ TRACE_RAYS, /* Show all rays */
+ TRACE_PLOT, /* Plot raysums */
+ TRACE_CLIPPING /* Plot clipping */
};
-typedef struct greyscale_st GREYSCALE;
-
+typedef enum {
+ O_PHM_HERMAN, /* Herman head phantom */
+ O_PHM_ROWLAND, /* Rowland head phantom */
+ O_PHM_BROWLAND, /* Bordered Rowland head phantom */
+ O_PHM_UNITPULSE /* Unit pulse phantom */
+} PhantomType;
+
+static const char O_PHM_HERMAN_STR[]= "herman";
+static const char O_PHM_ROWLAND_STR[]= "rowland";
+static const char O_PHM_BROWLAND_STR[]= "browland";
+static const char O_PHM_UNITPULSE_STR[]= "unitpulse";
+
+static const char O_INTERP_NEAREST_STR[]= "nearest";
+static const char O_INTERP_LINEAR_STR[]= "linear";
+static const char O_INTERP_BSPLINE_STR[]= "bspline";
+
+static const char O_FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
+static const char O_FILTER_ABS_SINC_STR[]= "abs_sinc";
+static const char O_FILTER_ABS_COS_STR[]= "abs_cos";
+static const char O_FILTER_ABS_HAMMING_STR[]= "abs_hamming";
+static const char O_FILTER_SHEPP_STR[]= "shepp";
+static const char O_FILTER_BANDLIMIT_STR[]= "bandlimit";
+static const char O_FILTER_SINC_STR[]= "sinc";
+static const char O_FILTER_COS_STR[]= "cos";
+static const char O_FILTER_HAMMING_STR[]= "hamming";
+static const char O_FILTER_TRIANGLE_STR[]= "triangle";
+
+typedef enum {
+ O_BPROJ_TRIG,
+ O_BPROJ_TABLE,
+ O_BPROJ_DIFF,
+ O_BPROJ_DIFF2,
+ O_BPROJ_IDIFF2
+} BackprojType;
+
+static const char O_BPROJ_TRIG_STR[]= "trig";
+static const char O_BPROJ_TABLE_STR[]= "table";
+static const char O_BPROJ_DIFF_STR[]= "diff";
+static const char O_BPROJ_DIFF2_STR[]= "diff2";
+static const char O_BPROJ_IDIFF2_STR[]= "idiff2";
+
+const static int RAYSUM_TRACE_ROW_TITLE=1;
+const static int RAYSUM_TRACE_ROW_TITLE2=2;
+const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
+const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
+const static int RAYSUM_TRACE_ROW_SCATTER=8;
+const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
+const static int RAYSUM_TRACE_ROW_NDET=12;
+const static int RAYSUM_TRACE_ROW_NVIEW=13;
+const static int RAYSUM_TRACE_ROW_SAMPLES=14;
+const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
+const static int RAYSUM_TRACE_ROW_ATTEN=18;
+
+
+/*************************************************************************
+ * FUNCTION DECLARATIONS
+ ************************************************************************/
+
+void usage (const char *program);
/* From reconstr.c */
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);
/* From bproj.c */
-void backproj_init (const RAYSUM *rs, IMAGE *im, const int bproj_method);
+void backproj_init (const RAYSUM *rs, IMAGE *im, const BackprojType bproj_method);
int backproj_calc (const RAYSUM *rs, IMAGE *im, const double *t, const double view_angle,
const int interp_type, const int bproj_method);
void backproj_term (const RAYSUM *rs, IMAGE *im, const int bproj_method);
const double view_angle, const int interp_type);
void backproj_term_id2 (const RAYSUM *rs, IMAGE *im);
-void usage (const char *program);
-int main(const int argc, char * const argv[]);
-
-
-
/* bspline.c */
int bspline(int samples, int zoom_factor, int spline_order, double input[], double output[]);
/* convolve.c */
-double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const int func_type);
+double convolve(const double f1[], const double f2[], const double dx, const int n, const int np, const FunctionSymmetry func_type);
double convolve_both(const double f1[], const double f2[], const double dx, const int n, const int np);
/* dialogs.c */
int filter_select(double *filter_param);
/* filter.c */
-double *filter_generate(int filt_type, double bw, double xmin, double xmax, int n, double param, int domain, int numint);
+double *filter_generate(const FilterType filt_type, double bw, double xmin, double xmax, int n, double param, DomainType domain, int numint);
double filter_spatial_response_calc(int filt_type, double x, double bw, double param, int n);
double filter_spatial_response_analytic(int filt_type, double x, double bw, double param);
double filter_frequency_response(int filt_type, double u, double bw, double param);
const char *name_of_interpolation(int interp_type);
int opt_set_filter(const char *optarg, const char *program);
const char *name_of_filter(const int filter);
-int opt_set_filter_domain(const char *optarg, const char *program);
-const char *name_of_filter_domain(const int domain);
+DomainType opt_set_filter_domain(const char *optarg, const char *program);
+const char *name_of_filter_domain(const DomainType domain);
int opt_set_backproj(const char *optarg, const char *program);
-const char *name_of_backproj(const int backproj);
+const char *name_of_backproj(const BackprojType backproj);
/* phm.c */
PHANTOM *phm_create(const int phmid);
PHANTOM *phm_create_from_file(const char *fname);
PHANTOM *phm_init(void);
int phm_add_pelm_file(PHANTOM *phm, const char *fname);
-void phm_add_pelm (PHANTOM *phm, const int type, const double cx, const double cy,
+void phm_add_pelm (PHANTOM *phm, const char *type, const double cx, const double cy,
const double u, const double v, const double rot, const double atten);
int pelm_make_points(PELM *obj);
void pelm_make_xform (PELM *obj);
/* phm2image.c */
void phm_to_image(const PHANTOM *phm, IMAGE *im, const int col_start, const int col_count,
const int nsample, const int trace);
-int pelm_is_point_inside(const PELM *obj, double x, double y, const int coord_type);
+int pelm_is_point_inside(PELM *obj, const double x, const double y, const CoordType coord_type);
/* phmstd.c */
void phm_std_herman (PHANTOM *phm);
int raysum_collect(RAYSUM *rs, const DETECTOR *det, const PHANTOM *phm, const int start_view, const int trace, const int unit_pulse);
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);
double phm_ray_attenuation (const PHANTOM *phm, const double x1, const double y1, const double x2, const double y2);
-double pelm_ray_attenuation (const PELM *obj, const double x1, const double y1, const double x2, const double y2);
-int pelm_clip_line (const PELM *obj, double *x1, double *y1, double *x2, double *y2);
+double pelm_ray_attenuation (PELM *pelm, const double x1, const double y1, const double x2, const double y2);
+int pelm_clip_line (const PELM *pelm, double *x1, double *y1, double *x2, double *y2);
void raysum_trace_show_param (const char *label, const char *fmt, int row, int color, ...);
/* scanner.c */
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