cv::gpu::SURF_GPU Class Reference
#include <gpu.hpp>
Inherits CvSURFParams.
List of all members.
Public Types |
enum | KeypointLayout {
SF_X = 0,
SF_Y,
SF_LAPLACIAN,
SF_SIZE,
SF_DIR,
SF_HESSIAN,
SF_FEATURE_STRIDE
} |
Public Member Functions |
| SURF_GPU () |
| the default constructor
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| SURF_GPU (double _hessianThreshold, int _nOctaves=4, int _nOctaveLayers=2, bool _extended=false, float _keypointsRatio=0.01f, bool _upright=false) |
| the full constructor taking all the necessary parameters
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int | descriptorSize () const |
| returns the descriptor size in float's (64 or 128)
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void | uploadKeypoints (const vector< KeyPoint > &keypoints, GpuMat &keypointsGPU) |
| upload host keypoints to device memory
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void | downloadKeypoints (const GpuMat &keypointsGPU, vector< KeyPoint > &keypoints) |
| download keypoints from device to host memory
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void | downloadDescriptors (const GpuMat &descriptorsGPU, vector< float > &descriptors) |
| download descriptors from device to host memory
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void | operator() (const GpuMat &img, const GpuMat &mask, GpuMat &keypoints) |
void | operator() (const GpuMat &img, const GpuMat &mask, GpuMat &keypoints, GpuMat &descriptors, bool useProvidedKeypoints=false) |
void | operator() (const GpuMat &img, const GpuMat &mask, std::vector< KeyPoint > &keypoints) |
void | operator() (const GpuMat &img, const GpuMat &mask, std::vector< KeyPoint > &keypoints, GpuMat &descriptors, bool useProvidedKeypoints=false) |
void | operator() (const GpuMat &img, const GpuMat &mask, std::vector< KeyPoint > &keypoints, std::vector< float > &descriptors, bool useProvidedKeypoints=false) |
Public Attributes |
float | keypointsRatio |
| max keypoints = min(keypointsRatio * img.size().area(), 65535)
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GpuMat | sum |
GpuMat | mask1 |
GpuMat | maskSum |
GpuMat | intBuffer |
GpuMat | det |
GpuMat | trace |
GpuMat | maxPosBuffer |
int | extended |
int | upright |
double | hessianThreshold |
int | nOctaves |
int | nOctaveLayers |
Member Enumeration Documentation
- Enumerator:
SF_X |
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SF_Y |
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SF_LAPLACIAN |
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SF_SIZE |
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SF_DIR |
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SF_HESSIAN |
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SF_FEATURE_STRIDE |
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Constructor & Destructor Documentation
cv::gpu::SURF_GPU::SURF_GPU |
( |
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) |
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cv::gpu::SURF_GPU::SURF_GPU |
( |
double |
_hessianThreshold, |
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int |
_nOctaves = 4 , |
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int |
_nOctaveLayers = 2 , |
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bool |
_extended = false , |
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float |
_keypointsRatio = 0.01f , |
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bool |
_upright = false | |
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) |
| | [explicit] |
the full constructor taking all the necessary parameters
Member Function Documentation
int cv::gpu::SURF_GPU::descriptorSize |
( |
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) |
const |
returns the descriptor size in float's (64 or 128)
void cv::gpu::SURF_GPU::uploadKeypoints |
( |
const vector< KeyPoint > & |
keypoints, |
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GpuMat & |
keypointsGPU | |
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) |
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upload host keypoints to device memory
void cv::gpu::SURF_GPU::downloadKeypoints |
( |
const GpuMat & |
keypointsGPU, |
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vector< KeyPoint > & |
keypoints | |
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) |
| | |
download keypoints from device to host memory
void cv::gpu::SURF_GPU::downloadDescriptors |
( |
const GpuMat & |
descriptorsGPU, |
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vector< float > & |
descriptors | |
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) |
| | |
download descriptors from device to host memory
void cv::gpu::SURF_GPU::operator() |
( |
const GpuMat & |
img, |
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const GpuMat & |
mask, |
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GpuMat & |
keypoints | |
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) |
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finds the keypoints using fast hessian detector used in SURF supports CV_8UC1 images keypoints will have nFeature cols and 6 rows keypoints.ptr<float>(SF_X)[i] will contain x coordinate of i'th feature keypoints.ptr<float>(SF_Y)[i] will contain y coordinate of i'th feature keypoints.ptr<float>(SF_LAPLACIAN)[i] will contain laplacian sign of i'th feature keypoints.ptr<float>(SF_SIZE)[i] will contain size of i'th feature keypoints.ptr<float>(SF_DIR)[i] will contain orientation of i'th feature keypoints.ptr<float>(SF_HESSIAN)[i] will contain response of i'th feature
void cv::gpu::SURF_GPU::operator() |
( |
const GpuMat & |
img, |
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const GpuMat & |
mask, |
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GpuMat & |
keypoints, |
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GpuMat & |
descriptors, |
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bool |
useProvidedKeypoints = false | |
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) |
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finds the keypoints and computes their descriptors. Optionally it can compute descriptors for the user-provided keypoints and recompute keypoints direction
void cv::gpu::SURF_GPU::operator() |
( |
const GpuMat & |
img, |
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const GpuMat & |
mask, |
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std::vector< KeyPoint > & |
keypoints | |
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) |
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void cv::gpu::SURF_GPU::operator() |
( |
const GpuMat & |
img, |
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const GpuMat & |
mask, |
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std::vector< KeyPoint > & |
keypoints, |
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GpuMat & |
descriptors, |
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bool |
useProvidedKeypoints = false | |
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) |
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void cv::gpu::SURF_GPU::operator() |
( |
const GpuMat & |
img, |
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const GpuMat & |
mask, |
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std::vector< KeyPoint > & |
keypoints, |
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std::vector< float > & |
descriptors, |
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bool |
useProvidedKeypoints = false | |
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) |
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Member Data Documentation
max keypoints = min(keypointsRatio * img.size().area(), 65535)
The documentation for this class was generated from the following file: