ecat7w.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include "include/swap.h"
#include "include/petc99.h"
#include "include/ecat7.h"

Functions
int	ecat7WriteMainheader (FILE *fp, ECAT7_mainheader *h)
int	ecat7WriteImageheader (FILE *fp, int blk, ECAT7_imageheader *h)
int	ecat7WriteAttenheader (FILE *fp, int blk, ECAT7_attenheader *h)
int	ecat7WritePolmapheader (FILE *fp, int blk, ECAT7_polmapheader *h)
int	ecat7WriteNormheader (FILE *fp, int blk, ECAT7_normheader *h)
int	ecat7WriteScanheader (FILE *fp, int blk, ECAT7_scanheader *h)
int	ecat7Write2DScanheader (FILE *fp, int blk, ECAT7_2Dscanheader *h)
int	ecat7Write2DNormheader (FILE *fp, int blk, ECAT7_2Dnormheader *h)
FILE *	ecat7Create (char *fname, ECAT7_mainheader *h)
int	ecat7_is_scaling_needed (float amax, float *data, int nr)
int	ecat7WriteImageMatrix (FILE *fp, int matrix_id, ECAT7_imageheader *h, float *fdata)
int	ecat7Write2DScanMatrix (FILE *fp, int matrix_id, ECAT7_2Dscanheader *h, float *fdata)
int	ecat7WriteScanMatrix (FILE *fp, int matrix_id, ECAT7_scanheader *h, float *fdata)
int	ecat7WriteMatrixdata (FILE *fp, int start_block, char *data, int pxl_nr, int pxl_size)

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Function Documentation

int ecat7_is_scaling_needed (  float  amax, float *  data, int  nr )

Check if pixel float values need to be scaled to be saved as short ints, or if they are already all very close to integers. Returns: Returns 1, if scaling is necessary, and 0 if not. Parameters: amax  Absolute maximum value data  Float array nr  Nr of float values

FILE* ecat7Create (  char *  fname, ECAT7_mainheader *  h )

Create a new ECAT 7.x file and return file pointer or NULL in case of an error. If file exists, it is renamed as fname% if possible. Directory list is written in big endian byte order.

int ecat7Write2DNormheader (  FILE *  fp, int  blk, ECAT7_2Dnormheader *  h )

Write ECAT 7.x 2D normalization header

int ecat7Write2DScanheader (  FILE *  fp, int  blk, ECAT7_2Dscanheader *  h )

Write ECAT 7.x 2D scan header

int ecat7Write2DScanMatrix (  FILE *  fp, int  matrix_id, ECAT7_2Dscanheader *  h, float *  fdata )

Write ECAT 7.x 2D sinogram matrix header and data Returns: Returns 0 if ok.

int ecat7WriteAttenheader (  FILE *  fp, int  blk, ECAT7_attenheader *  h )

Write ECAT 7.x attenuation header

int ecat7WriteImageheader (  FILE *  fp, int  blk, ECAT7_imageheader *  h )

Write ECAT 7.x image header Changes data type to big endian. Returns: Returns 0, if ok.

int ecat7WriteImageMatrix (  FILE *  fp, int  matrix_id, ECAT7_imageheader *  h, float *  fdata )

Write ECAT 7.x image or volume matrix header and data Returns: Returns 0 if ok.

int ecat7WriteMainheader (  FILE *  fp, ECAT7_mainheader *  h )

Write ECAT 7.x main header. Writes header always in big endian byte order. Returns: Returns 0, if ok.

int ecat7WriteMatrixdata (  FILE *  fp, int  start_block, char *  data, int  pxl_nr, int  pxl_size )

Write ECAT 7.x matrix data to a specified file position. Data does not need to be allocated for full blocks. Data must be represented in current machines byte order, and it is always saved in big endian byte order. Returns: Returns >0 in case of an error. Parameters: fp  Pointer to an opened ECAT file start_block  Block number where matrix data is written data  Pointer to matrix data pxl_nr  Number of pixels pxl_size  Size of data for one pixel in bytes

int ecat7WriteNormheader (  FILE *  fp, int  blk, ECAT7_normheader *  h )

Write ECAT 7.x 3D normalization header

int ecat7WritePolmapheader (  FILE *  fp, int  blk, ECAT7_polmapheader *  h )

Write ECAT 7.x polar map header

int ecat7WriteScanheader (  FILE *  fp, int  blk, ECAT7_scanheader *  h )

Write ECAT 7.x 3D scan header (512 bytes) Changes data type to big endian. Returns: Returns 0, if ok.

int ecat7WriteScanMatrix (  FILE *  fp, int  matrix_id, ECAT7_scanheader *  h, float *  fdata )

Write ECAT 7.x 3D sinogram matrix header and data Returns: Returns 0 if ok.

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