#include "allheaders.h"

Функции
static PIX *	pixErodeGray3h (PIX *pixs)
static PIX *	pixErodeGray3v (PIX *pixs)
static PIX *	pixDilateGray3h (PIX *pixs)
static PIX *	pixDilateGray3v (PIX *pixs)
PIX *	pixErodeGray (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixDilateGray (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixOpenGray (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixCloseGray (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixErodeGray3 (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixDilateGray3 (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixOpenGray3 (PIX *pixs, l_int32 hsize, l_int32 vsize)
PIX *	pixCloseGray3 (PIX *pixs, l_int32 hsize, l_int32 vsize)

Функции

PIX* pixCloseGray	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixCloseGray()

Input: pixs hsize (of Sel; must be odd; origin implicitly in center) vsize (ditto) Return: pixd

Notes: (1) Sel is a brick with all elements being hits (2) If hsize = vsize = 1, just returns a copy.

PIX* pixCloseGray3	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixCloseGray3()

Input: pixs (8 bpp, not cmapped) hsize (1 or 3) vsize (1 or 3) Return: pixd, or null on error

Notes: (1) Special case for 1x3, 3x1 or 3x3 brick sel (all hits) (2) If hsize = vsize = 1, just returns a copy.

PIX* pixDilateGray	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixDilateGray()

Input: pixs hsize (of Sel; must be odd; origin implicitly in center) vsize (ditto) Return: pixd

Notes: (1) Sel is a brick with all elements being hits (2) If hsize = vsize = 1, just returns a copy.

PIX* pixDilateGray3	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixDilateGray3()

Input: pixs (8 bpp, not cmapped) hsize (1 or 3) vsize (1 or 3) Return: pixd, or null on error

Notes: (1) Special case for 1x3, 3x1 or 3x3 brick sel (all hits) (2) If hsize = vsize = 1, just returns a copy.

static PIX * pixDilateGray3h ( PIX * pixs ) [static]

pixDilateGray3h()

Input: pixs (8 bpp, not cmapped) Return: pixd, or null on error

Notes: (1) Special case for horizontal 3x1 brick Sel; also used as the first step for the 3x3 brick Sel.

static PIX * pixDilateGray3v ( PIX * pixs ) [static]

pixDilateGray3v()

Input: pixs (8 bpp, not cmapped) Return: pixd, or null on error

Notes: (1) Special case for vertical 1x3 brick Sel; also used as the second step for the 3x3 brick Sel.

PIX* pixErodeGray	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixErodeGray()

Input: pixs hsize (of Sel; must be odd; origin implicitly in center) vsize (ditto) Return: pixd

Notes: (1) Sel is a brick with all elements being hits (2) If hsize = vsize = 1, just returns a copy.

PIX* pixErodeGray3	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixErodeGray3()

Input: pixs (8 bpp, not cmapped) hsize (1 or 3) vsize (1 or 3) Return: pixd, or null on error

Notes: (1) Special case for 1x3, 3x1 or 3x3 brick sel (all hits) (2) If hsize = vsize = 1, just returns a copy. (3) It would be nice not to add a border, but it is required if we want the same results as from the general case. We add 4 bytes on the left to speed up the copying, and 8 bytes at the right and bottom to allow unrolling of the computation of 8 pixels.

static PIX * pixErodeGray3h ( PIX * pixs ) [static]

pixErodeGray3h()

Input: pixs (8 bpp, not cmapped) Return: pixd, or null on error

Notes: (1) Special case for horizontal 3x1 brick Sel; also used as the first step for the 3x3 brick Sel.

static PIX * pixErodeGray3v ( PIX * pixs ) [static]

pixErodeGray3v()

Input: pixs (8 bpp, not cmapped) Return: pixd, or null on error

Notes: (1) Special case for vertical 1x3 brick Sel; also used as the second step for the 3x3 brick Sel. (2) Surprisingly, this is faster than setting up the lineptrs array and accessing into it; e.g., val4 = GET_DATA_BYTE(lines8[i + 3], j);

PIX* pixOpenGray	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixOpenGray()

Input: pixs hsize (of Sel; must be odd; origin implicitly in center) vsize (ditto) Return: pixd

Notes: (1) Sel is a brick with all elements being hits (2) If hsize = vsize = 1, just returns a copy.

PIX* pixOpenGray3	(	PIX *	pixs,
		l_int32	hsize,
		l_int32	vsize
	)

pixOpenGray3()

Input: pixs (8 bpp, not cmapped) hsize (1 or 3) vsize (1 or 3) Return: pixd, or null on error

Notes: (1) Special case for 1x3, 3x1 or 3x3 brick sel (all hits) (2) If hsize = vsize = 1, just returns a copy. (3) It would be nice not to add a border, but it is required to get the same results as for the general case.