Kernel: Mean and Standard Deviation

Functions
VX_API_ENTRY vx_node VX_API_CALL	vxMeanStdDevNode (vx_graph graph, vx_image input, vx_scalar mean, vx_scalar stddev)
	[Graph] Creates a mean value and optionally, a standard deviation node.
VX_API_ENTRY vx_status VX_API_CALL	vxuMeanStdDev (vx_context context, vx_image input, vx_float32 *mean, vx_float32 *stddev)
	[Immediate] Computes the mean value and optionally the standard deviation.

Detailed Description

Function Documentation

vxMeanStdDevNode()

VX_API_ENTRY vx_node VX_API_CALL vxMeanStdDevNode	(	vx_graph	graph,
		vx_image	input,
		vx_scalar	mean,
		vx_scalar	stddev )

#include <vx_nodes.h>

[Graph] Creates a mean value and optionally, a standard deviation node.

Parameters

[in]	graph	The reference to the graph.
[in]	input	The input image. VX_DF_IMAGE_U8 and VX_DF_IMAGE_U1 are supported.
[out]	mean	The VX_TYPE_FLOAT32 average pixel value.
[out]	stddev	[optional] The VX_TYPE_FLOAT32 standard deviation of the pixel values.

Returns

vx_node.

Return values

vx_node

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

vxuMeanStdDev()

VX_API_ENTRY vx_status VX_API_CALL vxuMeanStdDev	(	vx_context	context,
		vx_image	input,
		vx_float32 *	mean,
		vx_float32 *	stddev )

#include <vxu.h>

[Immediate] Computes the mean value and optionally the standard deviation.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The input image. VX_DF_IMAGE_U8 and VX_DF_IMAGE_U1 are supported.
[out]	mean	The average pixel value.
[out]	stddev	[optional] The standard deviation of the pixel values.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.