HarrisCornersDetector

Data Structures
struct	VPIHarrisKeypointDetectorParams
	Structure that defines the parameters for vpiSubmitHarrisKeypointDetector. More...

Functions
VPIStatus	vpiCreateHarrisKeypointDetector (VPIStream stream, uint32_t inputWidth, uint32_t inputHeight, VPIPayload *payload)
	Creates a Harris Keypoint Detector payload. More...
VPIStatus	vpiSubmitHarrisKeypointDetector (VPIPayload payload, VPIImage input, VPIArray outFeatures, VPIArray outScores, const VPIHarrisKeypointDetectorParams *params)
	Submits Harris Keypoint Detector operation to the stream associated with the payload. More...

Detailed Description

Detect harris keypoints

Function Documentation

vpiCreateHarrisKeypointDetector()

VPIStatus vpiCreateHarrisKeypointDetector	(	VPIStream	stream,
		uint32_t	inputWidth,
		uint32_t	inputHeight,
		VPIPayload *	payload
	)

#include <vpi/algo/HarrisKeypointDetector.h>

Creates a Harris Keypoint Detector payload.

This function allocates all temporary memory needed by the algorithm.

Parameters

stream	[in] VPI stream to be used.
inputWidth,inputHeight	[in] Dimensions of the input image that will be used with this payload.
payload	[out] Pointer to a payload handle that will point to the created payload.

Returns

VPI_SUCCESS if payload was created successfully, some other VPIStatus value in case of error.

vpiSubmitHarrisKeypointDetector()

VPIStatus vpiSubmitHarrisKeypointDetector	(	VPIPayload	payload,
		VPIImage	input,
		VPIArray	outFeatures,
		VPIArray	outScores,
		const VPIHarrisKeypointDetectorParams *	params
	)

#include <vpi/algo/HarrisKeypointDetector.h>

Submits Harris Keypoint Detector operation to the stream associated with the payload.

Parameters

payload	[in] Payload to be submitted.
input	[in] Input image from where the Harris keypoints will be extracted.
outFeatures	[out] Array that will receive the detected keypoints. It must have type VPI_ARRAY_TYPE_KLT_TRACKED_BOUNDING_BOX.
outScores	[out] Array that will receive the detected keypoints. It must have type VPI_ARRAY_TYPE_HOMOGRAPHY_TRANSFORM_2D.
params	[in] Pointer to a VPIHarrisKeypointDetectorParams with parameters for this algorithm invocation. These parameters can vary in every call and will be copied internally, no need to keep the object around.

Returns

VPI_SUCCESS if algorithm was submitted was created successfully, some other VPIStatus value in case of error. Even if VPI_SUCCESS is returned, the actual algorithm execution might still fail, even due to invalid parameters. The actual error will only be returned by some synchronization call or another algorithm submission.