GDALOctaveLayer Class Reference

Class for computation and storage of Hessian values in SURF-based algorithm. More...

#include <gdal_simplesurf.h>

Public Member Functions
	GDALOctaveLayer (int nOctave, int nInterval)
	Create instance with provided parameters.
void	ComputeLayer (GDALIntegralImage *poImg)
	Perform calculation of Hessian determinants and their signs for specified integral image.

Public Attributes
int	octaveNum
	Octave which contains this layer (1,2,3...)
int	filterSize
	Length of the side of filter.
int	radius
	Length of the border.
int	scale
	Scale for this layer.
int	width
	Image width in pixels.
int	height
	Image height in pixels.
double **	detHessians
	Hessian values for image pixels.
int **	signs
	Hessian signs for speeded matching.

Detailed Description

Class for computation and storage of Hessian values in SURF-based algorithm.

Author

Andrew Migal migal.nosp@m..dre.nosp@m.w@gma.nosp@m.il.c.nosp@m.om

SURF-based algorithm normally uses this class for searching feature points on raster images. Class also contains traces of Hessian matrices to provide fast computations.

Constructor & Destructor Documentation

GDALOctaveLayer()

GDALOctaveLayer::GDALOctaveLayer	(	int	nOctave,
		int	nInterval )

Create instance with provided parameters.

Parameters

nOctave	Number of octave which contains this layer
nInterval	Number of position in octave

Note

Normally constructor is invoked only by SURF-based algorithm.

Member Function Documentation

ComputeLayer()

void GDALOctaveLayer::ComputeLayer

(

GDALIntegralImage *

poImg

)

Perform calculation of Hessian determinants and their signs for specified integral image.

Result is stored internally.

Parameters

poImg

Integral image object, which provides all necessary data for computation

Note

Normally method is invoked only by SURF-based algorithm.

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The documentation for this class was generated from the following files:

• gdal_simplesurf.h
• gdal_octave.cpp