pyramid.h

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/* 
 * pyramid.h - Types, constants, globals, routine decls for pyramids
 * 
 * Author:  Rod Bogart
 *      Computer Science Dept.
 *      University of Utah
 * Date:    Thu Mar 12 1987
 * Copyright (c) 1987 Rod Bogart
 * 
 */
#define and &&
#define or ||
#define not !

#define MASKSIZE 5
#define MASKBELOW 2         /* MASKBELOW = (MASKSIZE-1) / 2; */
#define MASKABOVE 2         /* MASKABOVE = MASKSIZE / 2; */

typedef struct
{
    /* pointers to the corners of the arrays for each level */
    rle_pixel ** corners;

    int *xlen, *ylen;           /* sizes of each level */

    int nchan;              /* total channels per level */

    int levels;             /* number of levels in this pyramid */
} pyramid;

float * gauss_mask();