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	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	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 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	The minimum VX_TYPE_COORDINATES2D locations (optional). If the input image has several minimums, the kernel will return up to the capacity of the array.
[out]	maxLoc	The maximum VX_TYPE_COORDINATES2D locations (optional). If the input image has several maximums, the kernel will return up to the capacity of the array.
[out]	minCount	The total number of detected minimums in image (optional). Use a VX_TYPE_UINT32 scalar.
[out]	maxCount	The total number of detected maximums in image (optional). Use a VX_TYPE_UINT32 scalar.

Returns

vx_node.

Return values

0	Node could not be created.
*	Node handle.

vx_status 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.
[out]	maxVal	The maximum value in the image.
[out]	minLoc	The minimum locations (optional). If the input image has several minimums, the kernel will return all of them).
[out]	maxLoc	The maximum locations (optional). If the input image has several maximums, the kernel will return all of them).
[out]	minCount	The total number of detected minimums in image (optional).
[out]	maxCount	The total number of detected maximums in image (optional).

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.