Connected-Components Seed Fill

4- and 8-connectivity seed fill on binary images. More...

Functions
int	rapp_fill_4conn_bin (uint8_t *restrict dst, int dst_dim, const uint8_t *restrict map, int map_dim, int width, int height, int xseed, int yseed)
	4-connectivity connected-components seed fill.
int	rapp_fill_8conn_bin (uint8_t *restrict dst, int dst_dim, const uint8_t *restrict map, int map_dim, int width, int height, int xseed, int yseed)
	8-connectivity connected-components seed fill.

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Detailed Description

4- and 8-connectivity seed fill on binary images.

The input of these functions is a binary map image, and a seed pixel position. The functions set pixels in the destination image that are connected to the seed pixel in the map image. All other pixels in the destination image are set to zero. The alignment pixels must be cleared before calling any of these functions, or the result may be invalid. The images must be aligned.

Next section: Chain Codes

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Function Documentation

int rapp_fill_4conn_bin	(	uint8_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	map,
		int	map_dim,
		int	width,
		int	height,
		int	xseed,
		int	yseed
	)

4-connectivity connected-components seed fill.

Parameters:

[out]	dst	Destination buffer.
	dst_dim	Row dimension in bytes of the destination buffer.
[in]	map	Source map buffer containing the binary object to fill.
	map_dim	Row dimension in bytes of map buffer.
	width	Image width in pixels.
	height	Image height in pixels.
	xseed	X-coordinate of the seed point where the fill starts.
	yseed	Y-coordinate of the seed point where the fill starts.

Returns:

A negative error code on error, zero otherwise.

int rapp_fill_8conn_bin	(	uint8_t *restrict	dst,
		int	dst_dim,
		const uint8_t *restrict	map,
		int	map_dim,
		int	width,
		int	height,
		int	xseed,
		int	yseed
	)

8-connectivity connected-components seed fill.

Parameters:

[out]	dst	Destination buffer.
	dst_dim	Row dimension in bytes of the destination buffer.
[in]	map	Source map buffer containing the binary object to fill.
	map_dim	Row dimension in bytes of map buffer.
	width	Image width in pixels.
	height	Image height in pixels.
	xseed	X-coordinate of the seed point where the fill starts.
	yseed	Y-coordinate of the seed point where the fill starts.

Returns:

A negative error code on error, zero otherwise.