Kernel: Scale Image

Functions
VX_API_ENTRY vx_node VX_API_CALL	vxScaleImageNode (vx_graph graph, vx_image src, vx_image dst, vx_enum type)
	[Graph] Creates a Scale Image Node.
VX_API_ENTRY vx_node VX_API_CALL	vxHalfScaleGaussianNode (vx_graph graph, vx_image input, vx_image output, vx_int32 kernel_size)
	[Graph] Performs a Gaussian Blur on an image then half-scales it. The interpolation mode used is nearest-neighbor.
VX_API_ENTRY vx_status VX_API_CALL	vxuScaleImage (vx_context context, vx_image src, vx_image dst, vx_enum type)
	[Immediate] Scales an input image to an output image.
VX_API_ENTRY vx_status VX_API_CALL	vxuHalfScaleGaussian (vx_context context, vx_image input, vx_image output, vx_int32 kernel_size)
	[Immediate] Performs a Gaussian Blur on an image then half-scales it. The interpolation mode used is nearest-neighbor.

Detailed Description

Function Documentation

vxHalfScaleGaussianNode()

VX_API_ENTRY vx_node VX_API_CALL vxHalfScaleGaussianNode	(	vx_graph	graph,
		vx_image	input,
		vx_image	output,
		vx_int32	kernel_size )

#include <vx_nodes.h>

[Graph] Performs a Gaussian Blur on an image then half-scales it. The interpolation mode used is nearest-neighbor.

The output image size is determined by:

\[W_{output} = \frac{W_{input} + 1}{2} \\ , H_{output} = \frac{H_{input} + 1}{2} \]

Parameters

[in]	graph	The reference to the graph.
[in]	input	The input VX_DF_IMAGE_U8 image.
[out]	output	The output VX_DF_IMAGE_U8 image.
[in]	kernel_size	The input size of the Gaussian filter. Supported values are 1, 3 and 5.

Returns

vx_node.

Return values

vx_node

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

vxScaleImageNode()

VX_API_ENTRY vx_node VX_API_CALL vxScaleImageNode	(	vx_graph	graph,
		vx_image	src,
		vx_image	dst,
		vx_enum	type )

#include <vx_nodes.h>

[Graph] Creates a Scale Image Node.

Parameters

[in]	graph	The reference to the graph.
[in]	src	The source image of type VX_DF_IMAGE_U8 or VX_DF_IMAGE_U1.
[out]	dst	The destination image of type VX_DF_IMAGE_U8 or VX_DF_IMAGE_U1. The output type must be the same as that of the input image.
[in]	type	The interpolation type to use.

See also

vx_interpolation_type_e.

Note

The destination image must have a defined size and format. The border modes VX_NODE_BORDER value VX_BORDER_UNDEFINED, VX_BORDER_REPLICATE and VX_BORDER_CONSTANT are supported.

Returns

vx_node.

Return values

vx_node

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

vxuHalfScaleGaussian()

VX_API_ENTRY vx_status VX_API_CALL vxuHalfScaleGaussian	(	vx_context	context,
		vx_image	input,
		vx_image	output,
		vx_int32	kernel_size )

#include <vxu.h>

[Immediate] Performs a Gaussian Blur on an image then half-scales it. The interpolation mode used is nearest-neighbor.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The input VX_DF_IMAGE_U8 image.
[out]	output	The output VX_DF_IMAGE_U8 image.
[in]	kernel_size	The input size of the Gaussian filter. Supported values are 1, 3 and 5.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.

vxuScaleImage()

VX_API_ENTRY vx_status VX_API_CALL vxuScaleImage	(	vx_context	context,
		vx_image	src,
		vx_image	dst,
		vx_enum	type )

#include <vxu.h>

[Immediate] Scales an input image to an output image.

Parameters

[in]	context	The reference to the overall context.
[in]	src	The source image of type VX_DF_IMAGE_U8 or VX_DF_IMAGE_U1.
[out]	dst	The destination image of type VX_DF_IMAGE_U8 or VX_DF_IMAGE_U1. Must be of the same format as the input image.
[in]	type	The interpolation type.

See also

vx_interpolation_type_e.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.