erode_dilate.c File Reference

Go to the source code of this file.

Data Structures
struct	image
	code taken from http://fast-edge.googlecode.com and adapted to c99 More...

Macros
#define	min(a, b)   ((a)>(b) ? (b) : (a))
#define	max(a, b)   ((a)>(b) ? (a) : (b))

Typedefs
typedef float	type_t

Functions
void	dilate_1d_h (int width, int height, type_t img[width][height], type_t img_out[width][height])
void	dilate_1d_v (struct image *img, struct image *img_out)
void	erode_1d_h (int width, int height, type_t img[width][height], type_t img_out[width][height])
void	erode_1d_v (struct image *img, struct image *img_out)
void	erode (int width, int height, type_t img_in[width][height], type_t img_scratch[width][height], type_t img_out[width][height])
void	dilate (int width, int height, type_t img_in[width][height], type_t img_scratch[width][height], type_t img_out[width][height])

Macro Definition Documentation

max

#define max	(		a,
			b
	)		((a)>(b) ? (a) : (b))

Definition at line 39 of file erode_dilate.c.

min

#define min	(		a,
			b
	)		((a)>(b) ? (b) : (a))

Definition at line 38 of file erode_dilate.c.

Typedef Documentation

type_t

typedef float type_t

Definition at line 41 of file erode_dilate.c.

Function Documentation

dilate()

void dilate	(	int	width,
		int	height,
		type_t	img_in[width][height],
		type_t	img_scratch[width][height],
		type_t	img_out[width][height]
	)

Definition at line 85 of file erode_dilate.c.

                                                                                                                                   {
        dilate_1d_h(height,width,img_in, img_scratch);
        dilate_1d_v(height,width,img_scratch, img_out);
}

References dilate_1d_h(), and dilate_1d_v().

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dilate_1d_h()

void dilate_1d_h	(	int	width,
		int	height,
		type_t	img[width][height],
		type_t	img_out[width][height]
	)

Definition at line 44 of file erode_dilate.c.

                                                                                                  {
    int x, y;
    for (y = 2 ; y < height -2 ; ++y) {
        for (x = 2; x < width - 2; x++) {
            img_out[y][x] = max(max(max(max(img[y][x-2], img[y][x-1]), img[y][x]), img[y][x+1]), img[y][x+2]);  
        }
    }
}

References max, and x.

Referenced by dilate().

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dilate_1d_v()

void dilate_1d_v	(	struct image *	img,
		struct image *	img_out
	)

Definition at line 53 of file erode_dilate.c.

                                                             {
    int x, y;
    for (y = 2 ; y < height -2 ; ++y) {
        for (x = 2; x < width - 2; x++) {
            img_out[y][x] = max(max(max(max(img[y-2][x], img[y-1][x]), img[y][x]), img[y+1][x]), img[y+2][x]);  
        }
    }
}

References max, and x.

Referenced by dilate().

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erode()

void erode	(	int	width,
		int	height,
		type_t	img_in[width][height],
		type_t	img_scratch[width][height],
		type_t	img_out[width][height]
	)

Definition at line 80 of file erode_dilate.c.

                                                                                                                                 {
        erode_1d_h(height,width,img_in, img_scratch);
        erode_1d_v(height,width,img_scratch, img_out);
}

References erode_1d_h(), and erode_1d_v().

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erode_1d_h()

void erode_1d_h	(	int	width,
		int	height,
		type_t	img[width][height],
		type_t	img_out[width][height]
	)

Definition at line 62 of file erode_dilate.c.

                                                                                                 {
    int x, y;
    for (y = 2 ; y < height -2 ; ++y) {
        for (x = 2; x < width - 2; x++) {
            img_out[y][x] = min(min(min(min(img[y][x-2], img[y][x-1]), img[y][x]), img[y][x+1]), img[y][x+2]);  
        }
    }
}

References min, and x.

Referenced by erode().

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erode_1d_v()

void erode_1d_v	(	struct image *	img,
		struct image *	img_out
	)

Definition at line 71 of file erode_dilate.c.

                                                            {
    int x, y;
    for (y = 2 ; y < height -2 ; ++y) {
        for (x = 2; x < width - 2; x++) {
            img_out[y][x] = min(min(min(min(img[y-2][x], img[y-1][x]), img[y][x]), img[y+1][x]), img[y+2][x]);  
        }
    }
}

References min, and x.

Referenced by erode().

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