Package boofcv.factory.feature.orientation

Class FactoryOrientationAlgs

java.lang.Object

boofcv.factory.feature.orientation.FactoryOrientationAlgs

public class FactoryOrientationAlgs
extends Object

Creates specific implementations of local region orientation estimators.

Constructor Summary

Constructors

Constructor	Description
FactoryOrientationAlgs()

Method Summary

Modifier and Type	Method	Description
static <T extends ImageGray<T>> OrientationAverage<T>	average(double objectToSample, int radius, boolean weighted, Class<T> derivType)
static <II extends ImageGray<II>> OrientationIntegral<II>	average_ii(@Nullable ConfigAverageIntegral config, Class<II> integralType)	Orientation using "average" approach on integral images.
static <T extends ImageGray<T>> OrientationHistogram<T>	histogram(double objectToSample, int numAngles, int radius, boolean weighted, Class<T> derivType)
static <II extends ImageGray<II>> OrientationIntegral<II>	image_ii(double objectRadiusToScale, int sampleRadius, double samplePeriod, int sampleWidth, double weightSigma, Class<II> integralImage)	Estimates the orientation without calculating the image derivative.
static <T extends ImageGray<T>> OrientationImageAverage<T>	nogradient(double objectToSample, int radius, Class<T> imageType)
static <D extends ImageGray<D>> OrientationHistogramSift<D>	sift(@Nullable ConfigSiftOrientation config, Class<D> derivType)	Estimates multiple orientations as specified in SIFT paper.
static <T extends ImageGray<T>> OrientationSlidingWindow<T>	sliding(double objectRadiusToScale, int numAngles, double windowSize, int radius, boolean weighted, Class<T> derivType)
static <II extends ImageGray<II>> OrientationIntegral<II>	sliding_ii(@Nullable ConfigSlidingIntegral config, Class<II> integralType)	Estimates the orientation of a region by using a sliding window across the different potential angles.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FactoryOrientationAlgs

public FactoryOrientationAlgs()

Method Details

histogram

public static <T extends ImageGray<T>>
OrientationHistogram<T> histogram(double objectToSample,
 int numAngles,
 int radius,
 boolean weighted,
 Class<T> derivType)

nogradient

public static <T extends ImageGray<T>>
OrientationImageAverage<T> nogradient(double objectToSample,
 int radius,
 Class<T> imageType)

average

public static <T extends ImageGray<T>>
OrientationAverage<T> average(double objectToSample,
 int radius,
 boolean weighted,
 Class<T> derivType)

sliding

public static <T extends ImageGray<T>>
OrientationSlidingWindow<T> sliding(double objectRadiusToScale,
 int numAngles,
 double windowSize,
 int radius,
 boolean weighted,
 Class<T> derivType)

average_ii

public static <II extends ImageGray<II>>
OrientationIntegral<II> average_ii(@Nullable
 @Nullable ConfigAverageIntegral config,
 Class<II> integralType)

Orientation using "average" approach on integral images.

Parameters:

config - Configuration for algorithm.

integralType - Type of image being processed.

Returns:

OrientationIntegral

See Also:

• ImplOrientationAverageGradientIntegral

image_ii

public static <II extends ImageGray<II>>
OrientationIntegral<II> image_ii(double objectRadiusToScale,
 int sampleRadius,
 double samplePeriod,
 int sampleWidth,
 double weightSigma,
 Class<II> integralImage)

Estimates the orientation without calculating the image derivative.

Parameters:

sampleRadius - Radius of the region being considered in terms of samples. Typically 6.

samplePeriod - How often the image is sampled. This number is scaled. Typically 1.

sampleWidth - How wide of a kernel should be used to sample. Try 4

weightSigma - Sigma for weighting. zero for unweighted.

integralImage - Type of image being processed.

Returns:

OrientationIntegral

See Also:

• ImplOrientationImageAverageIntegral

sliding_ii

public static <II extends ImageGray<II>>
OrientationIntegral<II> sliding_ii(@Nullable
 @Nullable ConfigSlidingIntegral config,
 Class<II> integralType)

Estimates the orientation of a region by using a sliding window across the different potential angles.

Parameters:

config - Configuration for algorithm. If null defaults will be used.

integralType - Type of integral image being processed.

Returns:

OrientationIntegral

See Also:

• OrientationSlidingWindow

sift

public static <D extends ImageGray<D>>
OrientationHistogramSift<D> sift(@Nullable
 @Nullable ConfigSiftOrientation config,
 Class<D> derivType)

Estimates multiple orientations as specified in SIFT paper.

Parameters:

config - Configuration for algorithm. If null defaults will be used.

derivType - Type of derivative image it takes as input

Returns:

OrientationHistogramSift