lti::orientedHLTransform::parameters Class Reference

the parameters for the class orientedHLTransform More...

#include <ltiOrientedHLTransform.h>

Inheritance diagram for lti::orientedHLTransform::parameters:

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Collaboration diagram for lti::orientedHLTransform::parameters:

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List of all members.

Public Types
enum	eAccumulationMode { Classic, Gradient }
Public Member Functions
	parameters ()
	parameters (const parameters &other)
	~parameters ()
const char *	getTypeName () const
parameters &	copy (const parameters &other)
parameters &	operator= (const parameters &other)
virtual functor::parameters *	clone () const
virtual bool	write (ioHandler &handler, const bool complete=true) const
virtual bool	read (ioHandler &handler, const bool complete=true)
Public Attributes
trectangle< int >	transformationArea
int	baseValue
int	accuracy
int	range
eAccumulationMode	accumulationMode

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Detailed Description

the parameters for the class orientedHLTransform

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Member Enumeration Documentation

enum lti::orientedHLTransform::parameters::eAccumulationMode

Accumulation modes.

Enumerator:

Classic	A value of 1 will be accumulated in the hough space each time an edge is found with a value greater than baseValue.
Gradient	The value in the given edges image will be accumulated allowing to weight the strongness of an edge. If the edges image is a channel, their values will be multiplied by 255 before accumulating.

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Constructor & Destructor Documentation

lti::orientedHLTransform::parameters::parameters

(

)

default constructor

Reimplemented from lti::transform::parameters.

lti::orientedHLTransform::parameters::parameters

(

const parameters &

other

)

copy constructor

Parameters:

other

the parameters object to be copied

Reimplemented from lti::transform::parameters.

lti::orientedHLTransform::parameters::~parameters

(

)

[virtual]

destructor

Reimplemented from lti::functor::parameters.

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Member Function Documentation

virtual functor::parameters* lti::orientedHLTransform::parameters::clone

(

)

const [virtual]

returns a pointer to a clone of the parameters

Reimplemented from lti::transform::parameters.

parameters& lti::orientedHLTransform::parameters::copy

(

const parameters &

other

)

copy the contents of a parameters object

Parameters:

other

the parameters object to be copied

Returns:

a reference to this parameters object

Reimplemented from lti::transform::parameters.

const char* lti::orientedHLTransform::parameters::getTypeName

(

)

const [virtual]

returns name of this type

Reimplemented from lti::transform::parameters.

parameters& lti::orientedHLTransform::parameters::operator=

(

const parameters &

other

)

copy the contents of a parameters object

Parameters:

other

the parameters object to be copied

Returns:

a reference to this parameters object

virtual bool lti::orientedHLTransform::parameters::read	(	ioHandler &	handler,
		const bool	complete = true
	)			[virtual]

read the parameters from the given ioHandler

Parameters:

	handler	the ioHandler to be used
	complete	if true (the default) the enclosing begin/end will be also written, otherwise only the data block will be written.

Returns:

true if write was successful

Reimplemented from lti::functor::parameters.

virtual bool lti::orientedHLTransform::parameters::write	(	ioHandler &	handler,
		const bool	complete = true
	)			const [virtual]

write the parameters in the given ioHandler

Parameters:

	handler	the ioHandler to be used
	complete	if true (the default) the enclosing begin/end will be also written, otherwise only the data block will be written.

Returns:

true if write was successful

Reimplemented from lti::functor::parameters.

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Member Data Documentation

eAccumulationMode lti::orientedHLTransform::parameters::accumulationMode

mode used for the accumulation

Default: Classic

int lti::orientedHLTransform::parameters::accuracy

Accuracy of Hough Line Transformation.

Determines what kind of line angles can be detected. The following values are allowed:

• 45 (4 degrees steps) : very inaccurate, but very fast
• 90 (2 degrees steps) : inaccurate, but fast
• 180 (1 degree steps) : quite accurate
• 360 (1/2 degree steps) : accurate, but slower
• 540 (1/3 degree steps) : very accurate, but very slow
• 720 (1/4 degree steps) : even more accurate, but even slower...
• ...

Higher values that are divisible by 180 are also allowed, but do make the transformation _really_ slow.

Default value: 180

int lti::orientedHLTransform::parameters::baseValue

All points of the input image/channel whose value is greater than the base value are used for transformation.

(usually the base value will be 0 (or a little higher) which results in all coloured lines being considered on a black background)

For channels (with float values), the comparison value will be baseValue/255.0.

Default Value: 0

int lti::orientedHLTransform::parameters::range

Angle range.

The sinusoids are only be drawn from (gradientAngle-range) to (gradientAngle+range). Values lower than 5 are not recommended.

Default value is 10.

trectangle<int> lti::orientedHLTransform::parameters::transformationArea

Part of the input image/channel that will be considered for transformation.

If this area is bigger than the image/channel size given in the apply() method, the size of the channel will be used.

The default values are (0,0, std::numeric_limits<int>::max(), std::numeric_limits<int>::max()) (i.e. use the whole image)

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

• ltiOrientedHLTransform.h