vpImageFilter Class Reference

#include <visp3/core/vpImageFilter.h>

Static Public Member Functions
static void	canny (const vpImage< unsigned char > &I, vpImage< unsigned char > &Ic, const unsigned int gaussianFilterSize, const double thresholdCanny, const unsigned int apertureSobel)
template<class T >
static double	derivativeFilterX (const vpImage< T > &I, const unsigned int r, const unsigned int c)
template<class T >
static double	derivativeFilterY (const vpImage< T > &I, const unsigned int r, const unsigned int c)
template<class T >
static double	derivativeFilterX (const vpImage< T > &I, const unsigned int r, const unsigned int c, const double *filter, const unsigned int size)
template<class T >
static double	derivativeFilterY (const vpImage< T > &I, const unsigned int r, const unsigned int c, const double *filter, const unsigned int size)
static void	filter (const vpImage< double > &I, vpImage< double > &Iu, vpImage< double > &Iv, const vpMatrix &M)
static void	filter (const vpImage< unsigned char > &I, vpImage< double > &If, const vpMatrix &M)
static void	filter (const vpImage< unsigned char > &I, vpImage< double > &GI, const double *filter, unsigned int size)
static void	filter (const vpImage< double > &I, vpImage< double > &GI, const double *filter, unsigned int size)
static unsigned char	filterGaussXPyramidal (const vpImage< unsigned char > &I, unsigned int i, unsigned int j)
static unsigned char	filterGaussYPyramidal (const vpImage< unsigned char > &I, unsigned int i, unsigned int j)
static void	filterX (const vpImage< unsigned char > &I, vpImage< double > &dIx, const double *filter, unsigned int size)
static void	filterX (const vpImage< double > &I, vpImage< double > &dIx, const double *filter, unsigned int size)
static double	filterX (const vpImage< unsigned char > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterXLeftBorder (const vpImage< unsigned char > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterXRightBorder (const vpImage< unsigned char > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterX (const vpImage< double > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterXLeftBorder (const vpImage< double > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterXRightBorder (const vpImage< double > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static void	filterY (const vpImage< unsigned char > &I, vpImage< double > &dIx, const double *filter, unsigned int size)
static void	filterY (const vpImage< double > &I, vpImage< double > &dIx, const double *filter, unsigned int size)
static double	filterY (const vpImage< unsigned char > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterYTopBorder (const vpImage< unsigned char > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterYBottomBorder (const vpImage< unsigned char > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterYTopBorder (const vpImage< double > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterYBottomBorder (const vpImage< double > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static double	filterY (const vpImage< double > &I, unsigned int r, unsigned int c, const double *filter, unsigned int size)
static void	gaussianBlur (const vpImage< unsigned char > &I, vpImage< double > &GI, unsigned int size=7, double sigma=0., bool normalize=true)
static void	gaussianBlur (const vpImage< double > &I, vpImage< double > &GI, unsigned int size=7, double sigma=0., bool normalize=true)
template<class T >
static double	gaussianFilter (const vpImage< T > &fr, const unsigned int r, const unsigned int c)
static void	getGaussPyramidal (const vpImage< unsigned char > &I, vpImage< unsigned char > &GI)
static void	getGaussXPyramidal (const vpImage< unsigned char > &I, vpImage< unsigned char > &GI)
static void	getGaussYPyramidal (const vpImage< unsigned char > &I, vpImage< unsigned char > &GI)
static void	getGaussianKernel (double *filter, unsigned int size, double sigma=0., bool normalize=true)
static void	getGaussianDerivativeKernel (double *filter, unsigned int size, double sigma=0., bool normalize=true)
static void	getGradX (const vpImage< unsigned char > &I, vpImage< double > &dIx)
static void	getGradX (const vpImage< unsigned char > &I, vpImage< double > &dIx, const double *filter, unsigned int size)
static void	getGradX (const vpImage< double > &I, vpImage< double > &dIx, const double *filter, unsigned int size)
static void	getGradXGauss2D (const vpImage< unsigned char > &I, vpImage< double > &dIx, const double *gaussianKernel, const double *gaussianDerivativeKernel, unsigned int size)
static void	getGradY (const vpImage< unsigned char > &I, vpImage< double > &dIy)
static void	getGradY (const vpImage< unsigned char > &I, vpImage< double > &dIy, const double *filter, unsigned int size)
static void	getGradY (const vpImage< double > &I, vpImage< double > &dIy, const double *filter, unsigned int size)
static void	getGradYGauss2D (const vpImage< unsigned char > &I, vpImage< double > &dIy, const double *gaussianKernel, const double *gaussianDerivativeKernel, unsigned int size)

Detailed Description

Various image filter, convolution, etc...

Definition at line 67 of file vpImageFilter.h.

Member Function Documentation

void vpImageFilter::canny ( const vpImage< unsigned char > &  Isrc, vpImage< unsigned char > &  Ires, const unsigned int  gaussianFilterSize, const double  thresholdCanny, const unsigned int  apertureSobel  )

static

Apply the Canny edge operator on the image Isrc and return the resulting image Ires.

The following example shows how to use the method:

#include <visp3/core/vpConfig.h>
#include <visp3/core/vpImage.h>
#include <visp3/core/vpImageFilter.h>

int main()
{
#if VISP_HAVE_OPENCV_VERSION >= 0x020100 // Canny uses OpenCV >=2.1.0
  // Constants for the Canny operator.
  const unsigned int gaussianFilterSize = 5;
  const double thresholdCanny = 15;
  const unsigned int apertureSobel = 3;

  // Image for the Canny edge operator
  vpImage<unsigned char> Isrc;
  vpImage<unsigned char> Icanny;

  //First grab the source image Isrc.

  //Apply the Canny edge operator and set the Icanny image.
  vpImageFilter::canny(Isrc, Icanny, gaussianFilterSize, thresholdCanny, apertureSobel);
#endif
  return (0);
}

Parameters

Isrc	: Image to apply the Canny edge detector to.
Ires	: Filtered image (255 means an edge, 0 otherwise).
gaussianFilterSize	: The size of the mask of the Gaussian filter to apply (an odd number).
thresholdCanny	: The threshold for the Canny operator. Only value greater than this value are marked as an edge).
apertureSobel	: Size of the mask for the Sobel operator (odd number).

Examples:

tutorial-image-filter.cpp.

Definition at line 174 of file vpImageFilter.cpp.

References vpImageConvert::convert().

Referenced by vpMeNurbs::seekExtremitiesCanny().

template<class T >

static double vpImageFilter::derivativeFilterX ( const vpImage< T > &  I, const unsigned int  r, const unsigned int  c  )

inlinestatic

Apply a 1x3 derivative filter to an image pixel.

Parameters

I	: Image to filter
r	coordinates (row) of the pixel
c	: coordinates (column) of the pixel

Definition at line 87 of file vpImageFilter.h.

Referenced by vpFeatureLuminance::buildFrom(), and getGradX().

template<class T >

static double vpImageFilter::derivativeFilterX ( const vpImage< T > &  I, const unsigned int  r, const unsigned int  c, const double *  filter, const unsigned int  size  )

inlinestatic

Apply a 1 x size Derivative Filter in X to an image pixel.

Parameters

I	: Image to filter
r	: coordinates (row) of the pixel
c	: coordinates (column) of the pixel
filter	: coefficients of the filter to be initialized using vpImageFilter::getGaussianDerivativeKernel().
size	: size of the filter

See also

vpImageFilter::getGaussianDerivativeKernel()

Definition at line 124 of file vpImageFilter.h.

template<class T >

static double vpImageFilter::derivativeFilterY ( const vpImage< T > &  I, const unsigned int  r, const unsigned int  c  )

inlinestatic

Apply a 3x1 derivative filter to an image pixel.

Parameters

I	: Image to filter
r	: coordinates (row) of the pixel
c	: coordinates (column) of the pixel

Definition at line 103 of file vpImageFilter.h.

Referenced by vpFeatureLuminance::buildFrom(), and getGradY().

template<class T >

static double vpImageFilter::derivativeFilterY ( const vpImage< T > &  I, const unsigned int  r, const unsigned int  c, const double *  filter, const unsigned int  size  )

inlinestatic

Apply a size x 1 Derivative Filter in Y to an image pixel.

Parameters

I	: Image to filter
r	: coordinates (row) of the pixel
c	: coordinates (column) of the pixel
filter	: coefficients of the filter to be initialized using vpImageFilter::getGaussianDerivativeKernel().
size	: size of the filter

See also

vpImageFilter::getGaussianDerivativeKernel()

Definition at line 154 of file vpImageFilter.h.

void vpImageFilter::filter ( const vpImage< double > &  I, vpImage< double > &  Iu, vpImage< double > &  Iv, const vpMatrix &  M  )

static

Apply a filter to an image.

Parameters

I	: Image to filter
Iu	: Filtered image along the horizontal axis (u = columns).
Iv	: Filtered image along the vertical axis (v = rows).
M	: Separate filter coefficients

Examples:

tutorial-image-filter.cpp.

Definition at line 97 of file vpImageFilter.cpp.

References vpImage< Type >::getHeight(), vpArray2D< Type >::getRows(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by vpTemplateTracker::getGaussianBluredImage(), vpTemplateTrackerMI::getMI(), vpTemplateTrackerMI::getMI256(), vpTemplateTrackerZNCCForwardAdditional::initHessienDesired(), vpTemplateTrackerMIForwardCompositional::initHessienDesired(), vpTemplateTrackerZNCCInverseCompositional::initHessienDesired(), vpTemplateTrackerMIESM::initHessienDesired(), vpTemplateTrackerMIForwardAdditional::initHessienDesired(), vpTemplateTrackerMIInverseCompositional::initHessienDesired(), vpTemplateTracker::initTracking(), vpTemplateTrackerZNCCForwardAdditional::trackNoPyr(), vpTemplateTrackerSSDForwardCompositional::trackNoPyr(), vpTemplateTrackerMIForwardCompositional::trackNoPyr(), vpTemplateTrackerSSDESM::trackNoPyr(), vpTemplateTrackerSSDInverseCompositional::trackNoPyr(), vpTemplateTrackerZNCCInverseCompositional::trackNoPyr(), vpTemplateTrackerSSDForwardAdditional::trackNoPyr(), vpTemplateTrackerMIESM::trackNoPyr(), vpTemplateTrackerMIForwardAdditional::trackNoPyr(), and vpTemplateTrackerMIInverseCompositional::trackNoPyr().

void vpImageFilter::filter ( const vpImage< unsigned char > &  I, vpImage< double > &  If, const vpMatrix &  M  )

static

Apply a filter to an image.

Parameters

I	: Image to filter
If	: Filtered image.
M	: Filter coefficients.

Definition at line 57 of file vpImageFilter.cpp.

References vpImage< Type >::getHeight(), vpArray2D< Type >::getRows(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

void vpImageFilter::filter ( const vpImage< unsigned char > &  I, vpImage< double > &  GI, const double *  filter, unsigned int  size  )

static

Apply a separable filter.

Definition at line 205 of file vpImageFilter.cpp.

References vpImage< Type >::destroy(), filterX(), and filterY().

void vpImageFilter::filter ( const vpImage< double > &  I, vpImage< double > &  GI, const double *  filter, unsigned int  size  )

static

Apply a separable filter.

Definition at line 216 of file vpImageFilter.cpp.

References vpImage< Type >::destroy(), filterX(), and filterY().

static unsigned char vpImageFilter::filterGaussXPyramidal ( const vpImage< unsigned char > &  I, unsigned int  i, unsigned int  j  )

inlinestatic

Definition at line 184 of file vpImageFilter.h.

Referenced by getGaussXPyramidal().

static unsigned char vpImageFilter::filterGaussYPyramidal ( const vpImage< unsigned char > &  I, unsigned int  i, unsigned int  j  )

inlinestatic

Definition at line 188 of file vpImageFilter.h.

Referenced by getGaussYPyramidal().

void vpImageFilter::filterX ( const vpImage< unsigned char > &  I, vpImage< double > &  dIx, const double *  filter, unsigned int  size  )

static

Definition at line 224 of file vpImageFilter.cpp.

References filterXLeftBorder(), filterXRightBorder(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by filter(), filterX(), gaussianBlur(), and getGradYGauss2D().

void vpImageFilter::filterX ( const vpImage< double > &  I, vpImage< double > &  dIx, const double *  filter, unsigned int  size  )

static

Definition at line 245 of file vpImageFilter.cpp.

References filterX(), filterXLeftBorder(), filterXRightBorder(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

static double vpImageFilter::filterX ( const vpImage< unsigned char > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 196 of file vpImageFilter.h.

static double vpImageFilter::filterX ( const vpImage< double > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 248 of file vpImageFilter.h.

static double vpImageFilter::filterXLeftBorder ( const vpImage< unsigned char > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 212 of file vpImageFilter.h.

Referenced by filterX().

static double vpImageFilter::filterXLeftBorder ( const vpImage< double > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 263 of file vpImageFilter.h.

static double vpImageFilter::filterXRightBorder ( const vpImage< unsigned char > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 230 of file vpImageFilter.h.

References vpImage< Type >::getWidth().

Referenced by filterX().

static double vpImageFilter::filterXRightBorder ( const vpImage< double > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 281 of file vpImageFilter.h.

References vpImage< Type >::getWidth().

void vpImageFilter::filterY ( const vpImage< unsigned char > &  I, vpImage< double > &  dIx, const double *  filter, unsigned int  size  )

static

Definition at line 266 of file vpImageFilter.cpp.

References filterYBottomBorder(), filterYTopBorder(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by filter(), filterY(), gaussianBlur(), and getGradXGauss2D().

void vpImageFilter::filterY ( const vpImage< double > &  I, vpImage< double > &  dIx, const double *  filter, unsigned int  size  )

static

Definition at line 291 of file vpImageFilter.cpp.

References filterY(), filterYBottomBorder(), filterYTopBorder(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

static double vpImageFilter::filterY ( const vpImage< unsigned char > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 301 of file vpImageFilter.h.

static double vpImageFilter::filterY ( const vpImage< double > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 380 of file vpImageFilter.h.

static double vpImageFilter::filterYBottomBorder ( const vpImage< unsigned char > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 332 of file vpImageFilter.h.

References vpImage< Type >::getHeight().

Referenced by filterY().

static double vpImageFilter::filterYBottomBorder ( const vpImage< double > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 364 of file vpImageFilter.h.

References vpImage< Type >::getHeight().

static double vpImageFilter::filterYTopBorder ( const vpImage< unsigned char > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 316 of file vpImageFilter.h.

Referenced by filterY().

static double vpImageFilter::filterYTopBorder ( const vpImage< double > &  I, unsigned int  r, unsigned int  c, const double *  filter, unsigned int  size  )

inlinestatic

Definition at line 348 of file vpImageFilter.h.

void vpImageFilter::gaussianBlur ( const vpImage< unsigned char > &  I, vpImage< double > &  GI, unsigned int  size = 7, double  sigma = 0., bool  normalize = true  )

static

Apply a Gaussian blur to an image.

Parameters

I	: Input image.
GI	: Filtered image.
size	: Filter size. This value should be odd.
sigma	: Gaussian standard deviation. If it is equal to zero or negative, it is computed from filter size as sigma = (size-1)/6.
normalize	: Flag indicating whether to normalize the filter coefficients or not.

Examples:

tutorial-image-filter.cpp.

Definition at line 326 of file vpImageFilter.cpp.

References vpImage< Type >::destroy(), filterX(), filterY(), and getGaussianKernel().

void vpImageFilter::gaussianBlur ( const vpImage< double > &  I, vpImage< double > &  GI, unsigned int  size = 7, double  sigma = 0., bool  normalize = true  )

static

Apply a Gaussian blur to a double image.

Parameters

I	: Input double image.
GI	: Filtered image.
size	: Filter size. This value should be odd.
sigma	: Gaussian standard deviation. If it is equal to zero or negative, it is computed from filter size as sigma = (size-1)/6.
normalize	: Flag indicating whether to normalize the filter coefficients or not.

Definition at line 346 of file vpImageFilter.cpp.

References vpImage< Type >::destroy(), filterX(), filterY(), and getGaussianKernel().

template<class T >

static double vpImageFilter::gaussianFilter ( const vpImage< T > &  fr, const unsigned int  r, const unsigned int  c  )

inlinestatic

Apply a 5x5 Gaussian filter to an image pixel.

Parameters

fr	: Image to filter
r	: coordinates (row) of the pixel
c	: coordinates (column) of the pixel

Definition at line 405 of file vpImageFilter.h.

void vpImageFilter::getGaussianDerivativeKernel ( double *  filter, unsigned int  size, double  sigma = 0., bool  normalize = true  )

static

Return the coefficients of a Gaussian derivative filter that may be used to compute spatial image derivatives after applying a Gaussian blur.

Parameters

filter	: Pointer to the filter kernel that should refer to a (size+1)/2 array. The first value refers to the central coefficient, the next one to the right coefficients. Left coefficients could be deduced by symmetry.
size	: Filter size. This value should be odd.
sigma	: Gaussian standard deviation. If it is equal to zero or negative, it is computed from filter size as sigma = (size-1)/6.
normalize	: Flag indicating whether to normalize the filter coefficients or not.

Definition at line 406 of file vpImageFilter.cpp.

References vpImageException::incorrectInitializationError, and vpMath::sqr().

Referenced by vpTemplateTracker::setGaussianFilterSize(), and vpTemplateTracker::vpTemplateTracker().

void vpImageFilter::getGaussianKernel ( double *  filter, unsigned int  size, double  sigma = 0., bool  normalize = true  )

static

Return the coefficients of a Gaussian filter.

Parameters

filter	: Pointer to the filter kernel that should refer to a (size+1)/2 array. The first value refers to the central coefficient, the next one to the right coefficients. Left coefficients could be deduced by symmetry.
size	: Filter size. This value should be odd.
sigma	: Gaussian standard deviation. If it is equal to zero or negative, it is computed from filter size as sigma = (size-1)/6.
normalize	: Flag indicating whether to normalize the filter coefficients or not.

Definition at line 366 of file vpImageFilter.cpp.

References vpImageException::incorrectInitializationError, and vpMath::sqr().

Referenced by gaussianBlur(), vpTemplateTracker::setGaussianFilterSize(), and vpTemplateTracker::vpTemplateTracker().

void vpImageFilter::getGaussPyramidal ( const vpImage< unsigned char > &  I, vpImage< unsigned char > &  GI  )

static

Examples:

tutorial-image-filter.cpp.

Definition at line 615 of file vpImageFilter.cpp.

References vpImageConvert::convert(), getGaussXPyramidal(), getGaussYPyramidal(), vpImage< Type >::getHeight(), and vpImage< Type >::getWidth().

Referenced by vpTemplateTracker::initCompInversePyr(), vpTemplateTracker::initHessienDesiredPyr(), vpTemplateTracker::initTrackingPyr(), and vpTemplateTracker::trackPyr().

void vpImageFilter::getGaussXPyramidal ( const vpImage< unsigned char > &  I, vpImage< unsigned char > &  GI  )

static

Definition at line 647 of file vpImageFilter.cpp.

References filterGaussXPyramidal(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by getGaussPyramidal().

void vpImageFilter::getGaussYPyramidal ( const vpImage< unsigned char > &  I, vpImage< unsigned char > &  GI  )

static

Definition at line 676 of file vpImageFilter.cpp.

References filterGaussYPyramidal(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by getGaussPyramidal().

void vpImageFilter::getGradX ( const vpImage< unsigned char > &  I, vpImage< double > &  dIx  )

static

Examples:

tutorial-image-filter.cpp.

Definition at line 439 of file vpImageFilter.cpp.

References derivativeFilterX(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by getGradXGauss2D(), vpTemplateTrackerMIInverseCompositional::initCompInverse(), vpTemplateTrackerZNCCForwardAdditional::initHessienDesired(), vpTemplateTrackerZNCCInverseCompositional::initHessienDesired(), and vpTemplateTrackerMIESM::initHessienDesired().

void vpImageFilter::getGradX ( const vpImage< unsigned char > &  I, vpImage< double > &  dIx, const double *  filter, unsigned int  size  )

static

Definition at line 487 of file vpImageFilter.cpp.

References derivativeFilterX(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

void vpImageFilter::getGradX ( const vpImage< double > &  I, vpImage< double > &  dIx, const double *  filter, unsigned int  size  )

static

Definition at line 507 of file vpImageFilter.cpp.

References derivativeFilterX(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

void vpImageFilter::getGradXGauss2D ( const vpImage< unsigned char > &  I, vpImage< double > &  dIx, const double *  gaussianKernel, const double *  gaussianDerivativeKernel, unsigned int  size  )

static

Compute the gradient along X after applying a gaussian filter along Y.

Parameters

I	: Input image
dIx	: Gradient along X.
gaussianKernel	: Gaussian kernel which values should be computed using vpImageFilter::getGaussianKernel().
gaussianDerivativeKernel	: Gaussian derivative kernel which values should be computed using vpImageFilter::getGaussianDerivativeKernel().
size	: Size of the Gaussian and Gaussian derivative kernels.

Definition at line 592 of file vpImageFilter.cpp.

References filterY(), and getGradX().

Referenced by vpTemplateTrackerZNCCInverseCompositional::initCompInverse(), vpTemplateTrackerMIInverseCompositional::initCompInverse(), vpTemplateTrackerZNCCForwardAdditional::initHessienDesired(), vpTemplateTrackerMIForwardCompositional::initHessienDesired(), vpTemplateTrackerZNCCInverseCompositional::initHessienDesired(), vpTemplateTrackerMIESM::initHessienDesired(), vpTemplateTrackerMIForwardAdditional::initHessienDesired(), vpTemplateTracker::initTracking(), vpTemplateTrackerZNCCForwardAdditional::trackNoPyr(), vpTemplateTrackerSSDForwardCompositional::trackNoPyr(), vpTemplateTrackerMIForwardCompositional::trackNoPyr(), vpTemplateTrackerSSDESM::trackNoPyr(), vpTemplateTrackerSSDForwardAdditional::trackNoPyr(), vpTemplateTrackerMIESM::trackNoPyr(), and vpTemplateTrackerMIForwardAdditional::trackNoPyr().

void vpImageFilter::getGradY ( const vpImage< unsigned char > &  I, vpImage< double > &  dIy  )

static

Examples:

tutorial-image-filter.cpp.

Definition at line 460 of file vpImageFilter.cpp.

References derivativeFilterY(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

Referenced by getGradYGauss2D(), vpTemplateTrackerMIInverseCompositional::initCompInverse(), vpTemplateTrackerZNCCForwardAdditional::initHessienDesired(), vpTemplateTrackerZNCCInverseCompositional::initHessienDesired(), and vpTemplateTrackerMIESM::initHessienDesired().

void vpImageFilter::getGradY ( const vpImage< unsigned char > &  I, vpImage< double > &  dIy, const double *  filter, unsigned int  size  )

static

Definition at line 528 of file vpImageFilter.cpp.

References derivativeFilterY(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

void vpImageFilter::getGradY ( const vpImage< double > &  I, vpImage< double > &  dIy, const double *  filter, unsigned int  size  )

static

Definition at line 557 of file vpImageFilter.cpp.

References derivativeFilterY(), vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), and vpImage< Type >::resize().

void vpImageFilter::getGradYGauss2D ( const vpImage< unsigned char > &  I, vpImage< double > &  dIy, const double *  gaussianKernel, const double *  gaussianDerivativeKernel, unsigned int  size  )

static

Compute the gradient along Y after applying a gaussian filter along X.

Parameters

I	: Input image
dIy	: Gradient along Y.
gaussianKernel	: Gaussian kernel which values should be computed using vpImageFilter::getGaussianKernel().
gaussianDerivativeKernel	: Gaussian derivative kernel which values should be computed using vpImageFilter::getGaussianDerivativeKernel().
size	: Size of the Gaussian and Gaussian derivative kernels.

Definition at line 607 of file vpImageFilter.cpp.

References filterX(), and getGradY().

Referenced by vpTemplateTrackerZNCCInverseCompositional::initCompInverse(), vpTemplateTrackerMIInverseCompositional::initCompInverse(), vpTemplateTrackerZNCCForwardAdditional::initHessienDesired(), vpTemplateTrackerMIForwardCompositional::initHessienDesired(), vpTemplateTrackerZNCCInverseCompositional::initHessienDesired(), vpTemplateTrackerMIESM::initHessienDesired(), vpTemplateTrackerMIForwardAdditional::initHessienDesired(), vpTemplateTracker::initTracking(), vpTemplateTrackerZNCCForwardAdditional::trackNoPyr(), vpTemplateTrackerSSDForwardCompositional::trackNoPyr(), vpTemplateTrackerMIForwardCompositional::trackNoPyr(), vpTemplateTrackerSSDESM::trackNoPyr(), vpTemplateTrackerSSDForwardAdditional::trackNoPyr(), vpTemplateTrackerMIESM::trackNoPyr(), and vpTemplateTrackerMIForwardAdditional::trackNoPyr().