stira::imageanalysis::StegerLineDetector Class Reference

Steger line detector article{ steger98line, author = {Steger, C.}, title = {An unbiased detector of curvilinear structures}, journal = {IEEE Trans. Pattern Analysis and Machine Intelligence}, volume = {20}, number = {2}, pages = {113–125}, month = {February}, year = {1998} }. More...

#include <StegerLineDetector.h>

Public Member Functions
	StegerLineDetector ()
	Constructor.
	~StegerLineDetector ()
	Destructor.
ArrayGrid< bool > *	Run (ArrayGrid< double > *pGridIn, double sigmaSmooth, double lowerThreshold, double higherThreshold, bool isModeLight)
	run method More...

Detailed Description

Steger line detector article{ steger98line, author = {Steger, C.}, title = {An unbiased detector of curvilinear structures}, journal = {IEEE Trans. Pattern Analysis and Machine Intelligence}, volume = {20}, number = {2}, pages = {113–125}, month = {February}, year = {1998} }.

Remark: performs line detection up to the point where line candidates are detected; line linking is not implemented.

Member Function Documentation

ArrayGrid< bool > * stira::imageanalysis::StegerLineDetector::Run	(	ArrayGrid< double > *	pGridIn,
		double	sigmaSmooth,
		double	lowerThreshold,
		double	higherThreshold,
		bool	isModeLight
	)

run method

Parameters

pGridIn	input data grid
sigmaSmooth	sigma used for smoothing
lowerThreshold	lower threshold for line linking hysteresis
higherThreshold	higher threshold for line linking hysteresis
isModeLight	true for bright lines on dark background; false for dark lines on a bright background

Returns

grid where lines have value true and background has value false

References stira::common::MathUtils::ComputeArgument(), stira::filter::GaussConvolve::DerivativeConvolveFFT(), stira::imagedata::ArrayGrid< T >::GetHeight(), stira::imagedata::ArrayGrid< T >::GetValue(), stira::imagedata::ArrayGrid< T >::GetWidth(), stira::imagedata::OrientationGrid::SetAngle(), stira::imagedata::ArrayGrid< T >::SetGridValues(), stira::imagedata::OrientationGrid::SetMagnitude(), stira::imagedata::ArrayGrid< T >::SetValue(), stira::common::MathUtils::SolveLinearEquation(), and stira::common::Point< T >::x.

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

• imageanalysis/imageanalysis/StegerLineDetector.h
• imageanalysis/imageanalysis/StegerLineDetector.cpp