Erode Image

Detailed Description

Implements Erosion, which shrinks the white space in a VX_DF_IMAGE_U8 Boolean image. The output image dimensions should be the same as the dimensions of the input image.

This kernel uses a 3x3 box around the output pixel used to determine value.

\[ dst(x,y) = \min_{ \begin{array}{c} x-1 \le x' \le x+1 \\ y-1 \le y' \le y+1 \end{array} } src(x',y') \]

Note

For kernels that use other structuring patterns than 3x3 see vxNonLinearFilterNode or vxuNonLinearFilter.

Functions
vx_node VX_API_CALL	vxErode3x3Node (vx_graph graph, vx_image input, vx_image output)
	[Graph] Creates an Erosion Image Node. More...
vx_status VX_API_CALL	vxuErode3x3 (vx_context context, vx_image input, vx_image output)
	[Immediate] Erodes an image by a 3x3 window. More...

Function Documentation

vx_node VX_API_CALL vxErode3x3Node	(	vx_graph	graph,
		vx_image	input,
		vx_image	output
	)

[Graph] Creates an Erosion Image Node.

Parameters

[in]	graph	The reference to the graph.
[in]	input	The input image in VX_DF_IMAGE_U8 format.
[out]	output	The output image in VX_DF_IMAGE_U8 format, which must have the same dimensions as the input image.

Returns

vx_node.

Return values

vx_node

A node reference. Any possible errors preventing a successful creation should be checked using vxGetStatus

vx_status VX_API_CALL vxuErode3x3	(	vx_context	context,
		vx_image	input,
		vx_image	output
	)

[Immediate] Erodes an image by a 3x3 window.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The input image in VX_DF_IMAGE_U8 format.
[out]	output	The output image in VX_DF_IMAGE_U8 format.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.