FOEestimator Class Reference

compute the focus of expansion (FOE) from the pixel-based optical flow More...

#include <MBARI/FOEestimator.H>

Collaboration diagram for FOEestimator:

[legend]

List of all members.

Public Member Functions
	FOEestimator (int numAvg=20, int pyramidLevel=0)
	constructor
Vector2D	updateFOE (const Image< byte > &img, const Rectangle region)
	update with a new frame of the movie sequence
Vector2D	updateFOE (const Image< byte > &img)
	update with a new frame of the movie sequence
Vector2D	getFOE ()
	returns the last estimate of the FOA

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Detailed Description

compute the focus of expansion (FOE) from the pixel-based optical flow

Definition at line 48 of file FOEestimator.H.

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Constructor & Destructor Documentation

FOEestimator::FOEestimator	(	int	numAvg = 20,
		int	pyramidLevel = 0
	)

constructor

Parameters:

	numAvg	the number of frames used for averaging to get a smooth estimate
	pyramidLevel	the subsampling level at which to compute the optical flow

Definition at line 48 of file FOEestimator.C.

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Member Function Documentation

Vector2D FOEestimator::getFOE

(

)

returns the last estimate of the FOA

Definition at line 161 of file FOEestimator.C.

Vector2D FOEestimator::updateFOE

(

const Image< byte > &

img

)

update with a new frame of the movie sequence

Returns:

if the cache contains less than three frames, an invalid Vector2D is returned, otherwise the estimated location of the FOE is returned

Definition at line 64 of file FOEestimator.C.

References ImageCache< T >::back(), buildPyrGaussian(), Image< T >::getHeight(), Image< T >::getWidth(), ImageCacheAvg< T >::mean(), ImageCache< T >::push_back(), Vector2D::reset(), ImageCache< T >::size(), and ZEROS.

Vector2D FOEestimator::updateFOE	(	const Image< byte > &	img,
		const Rectangle	region
	)

update with a new frame of the movie sequence

Returns:

if the cache contains less than three frames, an invalid Vector2D is returned, otherwise the estimated location of the FOE is returned

Definition at line 56 of file FOEestimator.C.

References Rectangle::left(), and Rectangle::top().

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

• src/MBARI/FOEestimator.H
• src/MBARI/FOEestimator.C