/* the following three structures are used by ciq */

/* SCCSid "$SunId$ LBL" */

typedef int colormap[3][256];

typedef unsigned char pixel;

typedef struct {
    pixel r,g,b;
} rgbpixel;

#define  rgb_bright(p)		(int)((77L*(p)->r+151L*(p)->g+28L*(p)->b)/256)

/* image resolution */
extern int	xmax,ymax;