Enumerations
enum	vx_norm_type_e { VX_NORM_L1 = VX_ENUM_BASE(VX_ID_KHRONOS, VX_ENUM_NORM_TYPE) + 0x0 , VX_NORM_L2 = VX_ENUM_BASE(VX_ID_KHRONOS, VX_ENUM_NORM_TYPE) + 0x1 }
	A normalization type. More...

Functions
VX_API_ENTRY vx_node VX_API_CALL	vxCannyEdgeDetectorNode (vx_graph graph, vx_image input, vx_threshold hyst, vx_int32 gradient_size, vx_enum norm_type, vx_image output)
	[Graph] Creates a Canny Edge Detection Node.

VX_API_ENTRY vx_status VX_API_CALL	vxuCannyEdgeDetector (vx_context context, vx_image input, vx_threshold hyst, vx_int32 gradient_size, vx_enum norm_type, vx_image output)
	[Immediate] Computes Canny Edges on the input image into the output image.

Detailed Description

Enumeration Type Documentation

#include <vx_types.h>

A normalization type.

Enumerator
VX_NORM_L1	The L1 normalization.
VX_NORM_L2	The L2 normalization.

VX_API_ENTRY vx_node VX_API_CALL vxCannyEdgeDetectorNode	(	vx_graph	graph,
		vx_image	input,
		vx_threshold	hyst,
		vx_int32	gradient_size,
		vx_enum	norm_type,
		vx_image	output )

#include <vx_nodes.h>

[Graph] Creates a Canny Edge Detection Node.

Parameters

[in]	graph	The reference to the graph.
[in]	input	The input `VX_DF_IMAGE_U8` image.
[in]	hyst	The double threshold for hysteresis. The `VX_THRESHOLD_INPUT_FORMAT` shall be either `VX_DF_IMAGE_U8` or `VX_DF_IMAGE_S16`. The `VX_THRESHOLD_OUTPUT_FORMAT` is ignored.
[in]	gradient_size	The size of the Sobel filter window, must support at least 3, 5, and 7.
[in]	norm_type	A flag indicating the norm used to compute the gradient, `VX_NORM_L1` or `VX_NORM_L2`.
[out]	output	The binary output image in `VX_DF_IMAGE_U1` or `VX_DF_IMAGE_U8` format with values either 0 and 1 (`VX_DF_IMAGE_U1`), or 0 and 255 (`VX_DF_IMAGE_U8`).

Return values

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

VX_API_ENTRY vx_status VX_API_CALL vxuCannyEdgeDetector	(	vx_context	context,
		vx_image	input,
		vx_threshold	hyst,
		vx_int32	gradient_size,
		vx_enum	norm_type,
		vx_image	output )

#include <vxu.h>

[Immediate] Computes Canny Edges on the input image into the output image.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The input `VX_DF_IMAGE_U8` image.
[in]	hyst	The double threshold for hysteresis. The `VX_THRESHOLD_INPUT_FORMAT` shall be either `VX_DF_IMAGE_U8` or `VX_DF_IMAGE_S16`. The `VX_THRESHOLD_OUTPUT_FORMAT` is ignored.
[in]	gradient_size	The size of the Sobel filter window, must support at least 3, 5 and 7.
[in]	norm_type	A flag indicating the norm used to compute the gradient, `VX_NORM_L1` or `VX_NORM_L2`.
[out]	output	The binary output image in `VX_DF_IMAGE_U1` or `VX_DF_IMAGE_U8` format with values either 0 and 1 (`VX_DF_IMAGE_U1`), or 0 and 255 (`VX_DF_IMAGE_U8`).

Return values

VX_SUCCESS	Success
*	An error occurred. See `vx_status_e`.