#include <FastOpticalFlowOp.h>

Inheritance diagram for FastOpticalFlowOp:

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Collaboration diagram for FastOpticalFlowOp:

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Public Member Functions
	FastOpticalFlowOp (int width=5, int height=5)

virtual void	getDstConf (const ImageConf &src, ImageConf &dst) const
	Creates a double precision image of 2+1 channels for storing motion (uField,vField) and quality (q).

virtual void	computeDifferentials (const ImageTray< const Channel > &src, ImageTray< Channel > &dst) const
	Computes an image with channels dx, dy, dt and w (quality of gradients). User may redefine this.

virtual void	traverseChannels (const ImageTray< const Channel > &src, ImageTray< Channel > &dst) const

virtual void	traverseChannel (const Channel &src, Channel &dst) const
	Apply to single channel.

virtual size_t	getDiffChannelCount () const

bool	preSmooth () const

Public Member Functions inherited from SlidingWindowOp< SlidingOpticalFlowWeighted >
	SlidingWindowOp (const typename W::conf_t &conf)

	SlidingWindowOp (const std::string &name=__FUNCTION__, const std::string &description="")

virtual void	traverseChannel (const Channel &src, const Channel &srcWeight, Channel &dst, Channel &dstWeight) const
	Apply to single channel with alpha.

void	traverseMultiChannel (const ImageTray< const Channel > &src, ImageTray< Channel > &dst) const

virtual const std::string &	getName () const override
	Return the name of an instance.

Public Member Functions inherited from WindowOp< W >
	WindowOp (const std::string &name=__FUNCTION__, const std::string &description="")

	WindowOp (const std::string &name, const std::string &description, unsigned int width, unsigned int height)

	WindowOp (const typename W::conf_t &c, const std::string &name=__FUNCTION__, const std::string &description="")

	WindowOp (const WindowOp< W > &op)

void	setSize (unsigned int width)

void	setSize (unsigned int width, unsigned int height)

Public Member Functions inherited from ImageOp
virtual void	process (const ImageFrame &src, Image &dst) const
	Main interface. Typically splits processing to each channel.

virtual void	process (Image &dst) const override final
	Run this modifier for an image.

virtual void	process (const ImageFrame &src, const ImageFrame &srcWeight, Image &dst, Image &dstWeight) const

virtual void	process (const ImageTray< const Channel > &src, ImageTray< Image > &dst, bool checkOverlap=true) const
	Run the operator on a series of images. Geometry and type may be changed. UNDER CONSTR.

virtual void	makeCompatible (const ImageConf &src, Image &dst) const
	Depending on the operator, modifies the geometry and type of dst.

virtual void	makeCompatible2 (const ImageFrame &src1, const ImageFrame &src2, Image &dst) const
	Modifies the geometry and type of dst to fit the computation result.

virtual void	help (std::ostream &ostr=std::cout) const
	Prints name, description and parameters using BeanLike::toOStr(). Virtual, so derived classes may extend output.

Public Member Functions inherited from ImageMod
virtual int	srcAlpha () const
	Tell if alpha channel(s) is required in input.

virtual void	traverseChannels (ImageTray< Channel > &dst) const
	Run this modifier for a set of channels.

virtual void	traverseChannel (Channel &dst) const
	Run this modifier for an image frame.

virtual void	traverseChannel (Channel &dst, Channel &dstAlpha) const
	Run this modifier for an image frame.

virtual void	traverseChannels (ImageFrame &dst) const
	Converts dst to ImageTray<Channel> and calls traverseFrame(ImageTray<Channel> &) .

Public Member Functions inherited from BeanLike
	BeanLike (const BeanLike &b)

	BeanLike (const std::string &name, const std::string &description="")

virtual const std::string &	getDescription () const
	Return a brief description.

bool	hasParameters () const

template<class F >
F	getParameter (const std::string &p) const
	Gets a single parameter.

const map_t &	getParameters () const

map_t &	getParameters ()

template<class F >
void	setParametersFromEntries (const F &args)

void	setParameters (std::initializer_list< Variable::init_pair_t > args)
	Grants access to (if above hidden)

virtual void	setParameters (const std::string &p, char assignmentSymbol='=', char separatorSymbol=0)
	Sets comma-separated parameters in a predetermined order "a,b,c" or by specifing them "b=2".

template<class T >
void	setParameters (const std::map< std::string, T > &args)
	Set parameters.

template<class T >
void	setParameters (const SmartMap< T > &args)
	Set parameters.

void	setParameter (const std::string &p, const Castable &value)
	Sets a single parameter.

template<class T >
void	setParameter (const std::string &p, const VariableT< T > &value)

template<class F >
void	setParameter (const std::string &p, const F &value)
	Sets a single parameter.

template<class F >
void	setParameter (const std::string &p, std::initializer_list< F > value)
	Sets a single parameter.

BeanLike &	operator= (const BeanLike &b)

virtual std::ostream &	toStream (std::ostream &ostr, bool compact=true) const

Public Attributes
BlenderOp	blender

Public Attributes inherited from WindowOp< W >
W::conf_t	conf

Public Attributes inherited from ImageMod
bool	physicalScale

Additional Inherited Members
Public Types inherited from SlidingWindowOp< SlidingOpticalFlowWeighted >
typedef SlidingOpticalFlowWeighted	window_t

Public Types inherited from WindowOp< W >
typedef W	window_t

Public Types inherited from BeanLike
typedef ReferenceMap	map_t

Protected Member Functions inherited from ImageOp
	ImageOp (const std::string &name=__FUNCTION__, const std::string &description="")

	ImageOp (const ImageOp &op)

virtual bool	processOverlappingWithTemp (const ImageFrame &src, Image &dst) const

virtual bool	processOverlappingWithTemp (const ImageTray< const Channel > &src, ImageTray< Image > &dst) const

bool	traverseOverlappingWithTemp (const Channel &src, Channel &dst) const

bool	traverseOverlappingWithTemp (const Channel &src, const Channel &srcWeight, Channel &dst, Channel &dstWeight) const

void	traverseChannelsEqually (const ImageTray< const Channel > &src, ImageTray< Channel > &dst) const
	Calls processWithTemp() if the frames overlap.

void	traverseChannelsRepeated (const ImageTray< const Channel > &src, ImageTray< Channel > &dst) const
	Recycle channels until all dst channels completed.

void	traverseChannelsSeparately (const ImageTray< const Channel > &src, ImageTray< Channel > &dst) const
	Process each (src,dst) channel pair independently. Raise error if their counts differ.

void	traverseAsChannelTrays (const ImageFrame &src, ImageFrame &dst) const
	Redirect to processing as trays. This is the opposite of processChannels...() functions.

void	traverseAsChannelTrays (const ImageFrame &src, const ImageFrame &srcWeight, ImageFrame &dst, ImageFrame &dstWeight) const
	Redirect to processing as trays. This is the opposite of processChannels...() functions.

virtual void	initializeParameters (const ImageFrame &src, const ImageFrame &dst) const
	Set applicable internal parameters before calling traverse().

virtual void	initializeParameters (const ImageFrame &src, const ImageFrame &src2, const ImageFrame &dst) const
	Set applicable internal parameters before calling traverse().

Protected Member Functions inherited from ImageMod
	ImageMod (const std::string &name=__FUNCTION__, const std::string &description="")

	ImageMod (const ImageMod &op)

virtual void	processChannelsSeparately (ImageTray< Channel > &dst) const
	Run this modifier by calling traverseChannel(Channel &) for each image.

virtual void	initialize (Image &dst) const
	Modifies the geometry and the type of dst such that traverseChannel(Channel &) can be called.

virtual void	initializeAlpha (const Image &srcAlpha, Image &dstAlpha) const
	Modifies the geometry and the type of dst such that traverseChannel(Channel &) can be called.

Protected Member Functions inherited from BeanLike
virtual void	storeLastArguments (const std::string &p)
	Called after setParameters()

virtual void	updateBean () const
	Called after setParameters()

Static Protected Member Functions inherited from ImageOp
static void	adaptCoordinateHandler (const Channel &src, CoordinateHandler2D &handler)

Protected Attributes inherited from BeanLike
const std::string	name

const std::string	description

map_t	parameters

Detailed Description

Detects motion between two subsequent images. Does not extrapolate images. Applies recursive correction for smoothing motion field. Optical flow needs two input images, computes derivatives on them and produces an approximation of motion, ie. the flow.

# rainage diamond1.png diamond2.png --opticalFlow 25,25 --format '{i} {j2} {-0} {1} {A0}' --sample 10,10,file=oflow.dat

Member Function Documentation

◆ computeDifferentials()

void computeDifferentials	(	const ImageTray< const Channel > &	src,
		ImageTray< Channel > &	dst
	)		const

virtual

Computes an image with channels dx, dy, dt and w (quality of gradients). User may redefine this.

Computes a differential image with channels dx, dy, dt and w (quality of gradients).

Gradient quality = gradient stability * gradient magnitude

◆ getDstConf()

virtual void getDstConf	(	const ImageConf &	src,
		ImageConf &	dst
	)		const

inlinevirtual

Creates a double precision image of 2+1 channels for storing motion (uField,vField) and quality (q).

Reimplemented from ImageOp.

◆ traverseChannel()

virtual void traverseChannel	(	const Channel &	src,
		Channel &	dst
	)		const

inlinevirtual

Apply to single channel.

Reimplemented from SlidingWindowOp< SlidingOpticalFlowWeighted >.

◆ traverseChannels()

virtual void traverseChannels	(	const ImageTray< const Channel > &	src,
		ImageTray< Channel > &	dst
	)		const

inlinevirtual

Reimplemented from SlidingWindowOp< SlidingOpticalFlowWeighted >.

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

src/drain/imageops/FastOpticalFlowOp.h
src/drain/imageops/FastOpticalFlowOp.cpp

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ computeDifferentials()

◆ getDstConf()

◆ traverseChannel()

◆ traverseChannels()