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prapi::texture::EdgeUtils Class Reference

#include <EdgeDetector.h>

Detailed Description

The EdgeUtils class contains static utility methods for converting between different edge representations.

Static Public Methods

util::Matrix< double > getAngle (const util::Matrix< prapi::graphics::Point< double > > &mat)

Given a matrix containing gradient magnitudes in x and y directions, return the gradient angle for each pixel.

util::Matrix< double > getMagnitude (const util::Matrix< prapi::graphics::Point< double > > &mat)

Given a matrix containing gradient magnitudes in x and y directions, return the gradient magnitude for each pixel.

util::Matrix< double > getGradient (const util::Matrix< prapi::graphics::Point< double > > &mat, Gradient gradient)

Get either of the gradient coordinate layers from a two-layer gradient image.

void setGradient (util::Matrix< prapi::graphics::Point< double > > &matGradient, const util::Matrix< double > &mat, Gradient gradient) throw (EdgeDetectorException&)

Set a gradient coordinate layer to a value.

Member Function Documentation

util::Matrix<double> prapi::texture::EdgeUtils::getAngle ( const util::Matrix< prapi::graphics::Point< double > > & mat ) [static]

Given a matrix containing gradient magnitudes in x and y directions, return the gradient angle for each pixel.
Angles are represented as positive floating point numbers in the range [0,2*M_PI).
Parameters:

mat gradient magnitudes in x and y directions

util::Matrix<double> prapi::texture::EdgeUtils::getGradient ( const util::Matrix< prapi::graphics::Point< double > > & mat,

Gradient gradient

) [static]

Get either of the gradient coordinate layers from a two-layer gradient image.

Parameters:

mat The gradient image.

gradient The gradient which you want to separate (X or Y).

util::Matrix<double> prapi::texture::EdgeUtils::getMagnitude ( const util::Matrix< prapi::graphics::Point< double > > & mat ) [static]

Given a matrix containing gradient magnitudes in x and y directions, return the gradient magnitude for each pixel.
The magnitude of a gradient is equal to the length of the gradient vector.
Parameters:

mat gradient magnitudes in x and y directions

void prapi::texture::EdgeUtils::setGradient ( util::Matrix< prapi::graphics::Point< double > > & matGradient,

const util::Matrix< double > & mat,

Gradient gradient

) throw (EdgeDetectorException&) [static]

Set a gradient coordinate layer to a value.
With this method it is possible to alter gradient coordinates separately.
Parameters:

matGradient Set gradient in this gradient image

mat The gradient values

gradient The gradient direction you want to alter

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

EdgeDetector.h

Static Public Methods
util::Matrix< double >	getAngle (const util::Matrix< prapi::graphics::Point< double > > &mat)
	Given a matrix containing gradient magnitudes in x and y directions, return the gradient angle for each pixel.
util::Matrix< double >	getMagnitude (const util::Matrix< prapi::graphics::Point< double > > &mat)
	Given a matrix containing gradient magnitudes in x and y directions, return the gradient magnitude for each pixel.
util::Matrix< double >	getGradient (const util::Matrix< prapi::graphics::Point< double > > &mat, Gradient gradient)
	Get either of the gradient coordinate layers from a two-layer gradient image.
void	setGradient (util::Matrix< prapi::graphics::Point< double > > &matGradient, const util::Matrix< double > &mat, Gradient gradient) throw (EdgeDetectorException&)
	Set a gradient coordinate layer to a value.