Min, Max Location

Detailed Description

Finds the minimum and maximum values in an image and a location for each.

If the input image has several minimums/maximums, the kernel returns all of them.

\[ minVal = \min_{ \begin{array}{c} 0 \le x' \le width \\ 0 \le y' \le height \end{array} } src(x',y') \]

\[ maxVal = \max_{ \begin{array}{c} 0 \le x' \le width \\ 0 \le y' \le height \end{array} } src(x',y') \]

Functions
vx_node VX_API_CALL	vxMinMaxLocNode (vx_graph graph, vx_image input, vx_scalar minVal, vx_scalar maxVal, vx_array minLoc, vx_array maxLoc, vx_scalar minCount, vx_scalar maxCount)
	[Graph] Creates a min,max,loc node. More...
vx_status VX_API_CALL	vxuMinMaxLoc (vx_context context, vx_image input, vx_scalar minVal, vx_scalar maxVal, vx_array minLoc, vx_array maxLoc, vx_scalar minCount, vx_scalar maxCount)
	[Immediate] Computes the minimum and maximum values of the image. More...

Function Documentation

vx_node VX_API_CALL vxMinMaxLocNode	(	vx_graph	graph,
		vx_image	input,
		vx_scalar	minVal,
		vx_scalar	maxVal,
		vx_array	minLoc,
		vx_array	maxLoc,
		vx_scalar	minCount,
		vx_scalar	maxCount
	)

[Graph] Creates a min,max,loc node.

Parameters

[in]	graph	The reference to create the graph.
[in]	input	The input image in VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16 format.
[out]	minVal	The minimum value in the image, which corresponds to the type of the input.
[out]	maxVal	The maximum value in the image, which corresponds to the type of the input.
[out]	minLoc	[optional] The minimum VX_TYPE_COORDINATES2D locations. If the input image has several minimums, the kernel will return up to the capacity of the array.
[out]	maxLoc	[optional] The maximum VX_TYPE_COORDINATES2D locations. If the input image has several maximums, the kernel will return up to the capacity of the array.
[out]	minCount	[optional] The total number of detected minimums in image. Use a VX_TYPE_SIZE scalar.
[out]	maxCount	[optional] The total number of detected maximums in image. Use a VX_TYPE_SIZE scalar.

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 vxuMinMaxLoc	(	vx_context	context,
		vx_image	input,
		vx_scalar	minVal,
		vx_scalar	maxVal,
		vx_array	minLoc,
		vx_array	maxLoc,
		vx_scalar	minCount,
		vx_scalar	maxCount
	)

[Immediate] Computes the minimum and maximum values of the image.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The input image in VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16 format.
[out]	minVal	The minimum value in the image, which corresponds to the type of the input.
[out]	maxVal	The maximum value in the image, which corresponds to the type of the input.
[out]	minLoc	[optional] The minimum VX_TYPE_COORDINATES2D locations. If the input image has several minimums, the kernel will return up to the capacity of the array.
[out]	maxLoc	[optional] The maximum VX_TYPE_COORDINATES2D locations. If the input image has several maximums, the kernel will return up to the capacity of the array.
[out]	minCount	[optional] The total number of detected minimums in image. Use a VX_TYPE_SIZE scalar.
[out]	maxCount	[optional] The total number of detected maximums in image. Use a VX_TYPE_SIZE scalar.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.