| /* |
| MODULE : pgm.h |
| DESCRIPTION: Header file to be used with pgm.c. |
| AUTHOR : Fady Habra, 8715030, fady@cs.mcgill.ca |
| */ |
| |
| #ifdef PGM |
| #define EXT |
| #else |
| #define EXT extern |
| #endif |
| |
| typedef struct /* image information object */ |
| { |
| char valid; /* valid image info or not */ |
| char *filename; /* image filename */ |
| char *imgname; /* image name */ |
| FILE *fp; /* file pointer */ |
| int height; /* height */ |
| int width; /* width */ |
| int maxgray; /* maximum gray value */ |
| int threshold; /* Otsu threshold */ |
| unsigned char *data; /* image data */ |
| double *R; /* blurred data */ |
| float *f; /* fp data for L_canny() */ |
| float *var; /* horiz. variance bitmap */ |
| float *cedge; /* Canny edge data */ |
| int *lmap; /* label map */ |
| double Rmin; /* minimum R value */ |
| double Rmax; /* maximum R value */ |
| int *hist; /* histogram values (h*w) */ |
| double *p; /* normalized histogram */ |
| int *hsig; /* horizontal signature (w) */ |
| int *vsig; /* vertical signature (h) */ |
| } ImgT; |
| |
| typedef ImgT *ImgP; /* ptr to image info object */ |
| |
| /* PGM return codes */ |
| #define PGM_OK 0 /* success */ |
| #define PGM_NOT_FOUND -1 /* file not found */ |
| #define PGM_NOT_PGM -2 /* invalid PGM file */ |
| #define PGM_NO_DATA -3 /* no data to process */ |
| |
| /* image types */ |
| #define PGM_IDATA 0 /* raw image data */ |
| #define PGM_IBLUR 1 /* blurred image */ |
| #define PGM_CEDGE 2 /* Canny edges */ |
| #define PGM_IVAR 3 /* horizontal variance */ |
| |
| EXT void PGM_InitImage(ImgP, char *); |
| EXT void PGM_FreeImage(ImgP); |
| EXT void PGM_PrintInfo(ImgP); |
| EXT int PGM_LoadImage(ImgP); |
| EXT int PGM_WriteBinary(ImgP); |
| EXT int PGM_WriteImage(ImgP, char); |
| |
| #ifdef PGM |
| int PGM_Open(ImgP); |
| void PGM_Close(ImgP); |
| int PGM_GetValue(ImgP); |
| #endif |
| |
| #undef EXT |
