PCTSignatures (OpenCV 4.1.2 Java documentation)

java.lang.Object
- org.opencv.core.Algorithm
- - org.opencv.xfeatures2d.PCTSignatures

```
public class PCTSignatures
extends Algorithm
```
Class implementing PCT (position-color-texture) signature extraction as described in CITE: KrulisLS16. The algorithm is divided to a feature sampler and a clusterizer. Feature sampler produces samples at given set of coordinates. Clusterizer then produces clusters of these samples using k-means algorithm. Resulting set of clusters is the signature of the input image. A signature is an array of SIGNATURE_DIMENSION-dimensional points. Used dimensions are: weight, x, y position; lab color, contrast, entropy. CITE: KrulisLS16 CITE: BeecksUS10

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`GAUSSIAN`
`static int`	`HEURISTIC`
`static int`	`L_INFINITY`
`static int`	`L0_25`
`static int`	`L0_5`
`static int`	`L1`
`static int`	`L2`
`static int`	`L2SQUARED`
`static int`	`L5`
`static int`	`MINUS`
`static int`	`NORMAL`
`static int`	`REGULAR`
`static int`	`UNIFORM`

Fields inherited from class org.opencv.core.Algorithm
nativeObj

Constructor Summary

Constructors
Modifier Constructor and Description

protected PCTSignatures(long addr)

Constructors
Modifier	Constructor and Description
`protected`	`PCTSignatures(long addr)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static PCTSignatures`	`__fromPtr__(long addr)`
`void`	`computeSignature(Mat image, Mat signature)` Computes signature of given image.
`void`	`computeSignatures(List<Mat> images, List<Mat> signatures)` Computes signatures for multiple images in parallel.
`static PCTSignatures`	`create()` Creates PCTSignatures algorithm using sample and seed count.
`static PCTSignatures`	`create(int initSampleCount)` Creates PCTSignatures algorithm using sample and seed count.
`static PCTSignatures`	`create(int initSampleCount, int initSeedCount)` Creates PCTSignatures algorithm using sample and seed count.
`static PCTSignatures`	`create(int initSampleCount, int initSeedCount, int pointDistribution)` Creates PCTSignatures algorithm using sample and seed count.
`static PCTSignatures`	`create(MatOfPoint2f initSamplingPoints, int initSeedCount)` Creates PCTSignatures algorithm using pre-generated sampling points and number of clusterization seeds.
`static PCTSignatures`	`create(MatOfPoint2f initSamplingPoints, MatOfInt initClusterSeedIndexes)` Creates PCTSignatures algorithm using pre-generated sampling points and clusterization seeds indexes.
`static void`	`drawSignature(Mat source, Mat signature, Mat result)` Draws signature in the source image and outputs the result.
`static void`	`drawSignature(Mat source, Mat signature, Mat result, float radiusToShorterSideRatio)` Draws signature in the source image and outputs the result.
`static void`	`drawSignature(Mat source, Mat signature, Mat result, float radiusToShorterSideRatio, int borderThickness)` Draws signature in the source image and outputs the result.
`protected void`	`finalize()`
`static void`	`generateInitPoints(MatOfPoint2f initPoints, int count, int pointDistribution)` Generates initial sampling points according to selected point distribution.
`int`	`getClusterMinSize()` This parameter multiplied by the index of iteration gives lower limit for cluster size.
`int`	`getDistanceFunction()` Distance function selector used for measuring distance between two points in k-means.
`float`	`getDropThreshold()` Remove centroids in k-means whose weight is lesser or equal to given threshold.
`int`	`getGrayscaleBits()` Color resolution of the greyscale bitmap represented in allocated bits (i.e., value 4 means that 16 shades of grey are used).
`int`	`getInitSeedCount()` Number of initial seeds (initial number of clusters) for the k-means algorithm.
`MatOfInt`	`getInitSeedIndexes()` Initial seeds (initial number of clusters) for the k-means algorithm.
`int`	`getIterationCount()` Number of iterations of the k-means clustering.
`float`	`getJoiningDistance()` Threshold euclidean distance between two centroids.
`int`	`getMaxClustersCount()` Maximal number of generated clusters.
`int`	`getSampleCount()` Number of initial samples taken from the image.
`MatOfPoint2f`	`getSamplingPoints()` Initial samples taken from the image.
`float`	`getWeightA()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`float`	`getWeightB()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`float`	`getWeightContrast()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`float`	`getWeightEntropy()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`float`	`getWeightL()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`float`	`getWeightX()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`float`	`getWeightY()` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`int`	`getWindowRadius()` Size of the texture sampling window used to compute contrast and entropy (center of the window is always in the pixel selected by x,y coordinates of the corresponding feature sample).
`void`	`setClusterMinSize(int clusterMinSize)` This parameter multiplied by the index of iteration gives lower limit for cluster size.
`void`	`setDistanceFunction(int distanceFunction)` Distance function selector used for measuring distance between two points in k-means.
`void`	`setDropThreshold(float dropThreshold)` Remove centroids in k-means whose weight is lesser or equal to given threshold.
`void`	`setGrayscaleBits(int grayscaleBits)` Color resolution of the greyscale bitmap represented in allocated bits (i.e., value 4 means that 16 shades of grey are used).
`void`	`setInitSeedIndexes(MatOfInt initSeedIndexes)` Initial seed indexes for the k-means algorithm.
`void`	`setIterationCount(int iterationCount)` Number of iterations of the k-means clustering.
`void`	`setJoiningDistance(float joiningDistance)` Threshold euclidean distance between two centroids.
`void`	`setMaxClustersCount(int maxClustersCount)` Maximal number of generated clusters.
`void`	`setSamplingPoints(MatOfPoint2f samplingPoints)` Sets sampling points used to sample the input image.
`void`	`setTranslation(int idx, float value)` Translations of the individual axes of the feature space.
`void`	`setTranslations(MatOfFloat translations)` Translations of the individual axes of the feature space.
`void`	`setWeight(int idx, float value)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space.
`void`	`setWeightA(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWeightB(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWeightContrast(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWeightEntropy(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWeightL(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWeights(MatOfFloat weights)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space.
`void`	`setWeightX(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWeightY(float weight)` Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast.
`void`	`setWindowRadius(int radius)` Size of the texture sampling window used to compute contrast and entropy (center of the window is always in the pixel selected by x,y coordinates of the corresponding feature sample).

Methods inherited from class org.opencv.core.Algorithm
clear, empty, getDefaultName, getNativeObjAddr, save

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - UNIFORM
```
public static final int UNIFORM
```
    See Also:
    
    Constant Field Values
  - REGULAR
```
public static final int REGULAR
```
    See Also:
    
    Constant Field Values
  - NORMAL
```
public static final int NORMAL
```
    See Also:
    
    Constant Field Values
  - L0_25
```
public static final int L0_25
```
    See Also:
    
    Constant Field Values
  - L0_5
```
public static final int L0_5
```
    See Also:
    
    Constant Field Values
  - L1
```
public static final int L1
```
    See Also:
    
    Constant Field Values
  - L2
```
public static final int L2
```
    See Also:
    
    Constant Field Values
  - L2SQUARED
```
public static final int L2SQUARED
```
    See Also:
    
    Constant Field Values
  - L5
```
public static final int L5
```
    See Also:
    
    Constant Field Values
  - L_INFINITY
```
public static final int L_INFINITY
```
    See Also:
    
    Constant Field Values
  - MINUS
```
public static final int MINUS
```
    See Also:
    
    Constant Field Values
  - GAUSSIAN
```
public static final int GAUSSIAN
```
    See Also:
    
    Constant Field Values
  - HEURISTIC
```
public static final int HEURISTIC
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - PCTSignatures
```
protected PCTSignatures(long addr)
```
- Method Detail
  - __fromPtr__
```
public static PCTSignatures __fromPtr__(long addr)
```
  - create
```
public static PCTSignatures create(int initSampleCount,
                                   int initSeedCount,
                                   int pointDistribution)
```
    Creates PCTSignatures algorithm using sample and seed count. It generates its own sets of sampling points and clusterization seed indexes.
    
    Parameters:
    
    initSampleCount - Number of points used for image sampling.
    
    initSeedCount - Number of initial clusterization seeds. Must be lower or equal to initSampleCount
    
    pointDistribution - Distribution of generated points. Default: UNIFORM. Available: UNIFORM, REGULAR, NORMAL.
    
    Returns:
    
    Created algorithm.
  - create
```
public static PCTSignatures create(int initSampleCount,
                                   int initSeedCount)
```
    Creates PCTSignatures algorithm using sample and seed count. It generates its own sets of sampling points and clusterization seed indexes.
    
    Parameters:
    
    initSampleCount - Number of points used for image sampling.
    
    initSeedCount - Number of initial clusterization seeds. Must be lower or equal to initSampleCount Available: UNIFORM, REGULAR, NORMAL.
    
    Returns:
    
    Created algorithm.
  - create
```
public static PCTSignatures create(int initSampleCount)
```
    Creates PCTSignatures algorithm using sample and seed count. It generates its own sets of sampling points and clusterization seed indexes.
    
    Parameters:
    
    initSampleCount - Number of points used for image sampling. Must be lower or equal to initSampleCount Available: UNIFORM, REGULAR, NORMAL.
    
    Returns:
    
    Created algorithm.
  - create
```
public static PCTSignatures create()
```
    Creates PCTSignatures algorithm using sample and seed count. It generates its own sets of sampling points and clusterization seed indexes. Must be lower or equal to initSampleCount Available: UNIFORM, REGULAR, NORMAL.
    
    Returns:
    
    Created algorithm.
  - create
```
public static PCTSignatures create(MatOfPoint2f initSamplingPoints,
                                   int initSeedCount)
```
    Creates PCTSignatures algorithm using pre-generated sampling points and number of clusterization seeds. It uses the provided sampling points and generates its own clusterization seed indexes.
    
    Parameters:
    
    initSamplingPoints - Sampling points used in image sampling.
    
    initSeedCount - Number of initial clusterization seeds. Must be lower or equal to initSamplingPoints.size().
    
    Returns:
    
    Created algorithm.
  - create
```
public static PCTSignatures create(MatOfPoint2f initSamplingPoints,
                                   MatOfInt initClusterSeedIndexes)
```
    Creates PCTSignatures algorithm using pre-generated sampling points and clusterization seeds indexes.
    
    Parameters:
    
    initSamplingPoints - Sampling points used in image sampling.
    
    initClusterSeedIndexes - Indexes of initial clusterization seeds. Its size must be lower or equal to initSamplingPoints.size().
    
    Returns:
    
    Created algorithm.
  - getDropThreshold
```
public float getDropThreshold()
```
    Remove centroids in k-means whose weight is lesser or equal to given threshold.
    
    Returns:
    
    automatically generated
  - getJoiningDistance
```
public float getJoiningDistance()
```
    Threshold euclidean distance between two centroids. If two cluster centers are closer than this distance, one of the centroid is dismissed and points are reassigned.
    
    Returns:
    
    automatically generated
  - getWeightA
```
public float getWeightA()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getWeightB
```
public float getWeightB()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getWeightContrast
```
public float getWeightContrast()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getWeightEntropy
```
public float getWeightEntropy()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getWeightL
```
public float getWeightL()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getWeightX
```
public float getWeightX()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getWeightY
```
public float getWeightY()
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Returns:
    
    automatically generated
  - getClusterMinSize
```
public int getClusterMinSize()
```
    This parameter multiplied by the index of iteration gives lower limit for cluster size. Clusters containing fewer points than specified by the limit have their centroid dismissed and points are reassigned.
    
    Returns:
    
    automatically generated
  - getDistanceFunction
```
public int getDistanceFunction()
```
    Distance function selector used for measuring distance between two points in k-means.
    
    Returns:
    
    automatically generated
  - getGrayscaleBits
```
public int getGrayscaleBits()
```
    Color resolution of the greyscale bitmap represented in allocated bits (i.e., value 4 means that 16 shades of grey are used). The greyscale bitmap is used for computing contrast and entropy values.
    
    Returns:
    
    automatically generated
  - getInitSeedCount
```
public int getInitSeedCount()
```
    Number of initial seeds (initial number of clusters) for the k-means algorithm.
    
    Returns:
    
    automatically generated
  - getIterationCount
```
public int getIterationCount()
```
    Number of iterations of the k-means clustering. We use fixed number of iterations, since the modified clustering is pruning clusters (not iteratively refining k clusters).
    
    Returns:
    
    automatically generated
  - getMaxClustersCount
```
public int getMaxClustersCount()
```
    Maximal number of generated clusters. If the number is exceeded, the clusters are sorted by their weights and the smallest clusters are cropped.
    
    Returns:
    
    automatically generated
  - getSampleCount
```
public int getSampleCount()
```
    Number of initial samples taken from the image.
    
    Returns:
    
    automatically generated
  - getWindowRadius
```
public int getWindowRadius()
```
    Size of the texture sampling window used to compute contrast and entropy (center of the window is always in the pixel selected by x,y coordinates of the corresponding feature sample).
    
    Returns:
    
    automatically generated
  - getSamplingPoints
```
public MatOfPoint2f getSamplingPoints()
```
    Initial samples taken from the image. These sampled features become the input for clustering.
    
    Returns:
    
    automatically generated
  - getInitSeedIndexes
```
public MatOfInt getInitSeedIndexes()
```
    Initial seeds (initial number of clusters) for the k-means algorithm.
    
    Returns:
    
    automatically generated
  - computeSignature
```
public void computeSignature(Mat image,
                             Mat signature)
```
    Computes signature of given image.
    
    Parameters:
    
    image - Input image of CV_8U type.
    
    signature - Output computed signature.
  - computeSignatures
```
public void computeSignatures(List<Mat> images,
                              List<Mat> signatures)
```
    Computes signatures for multiple images in parallel.
    
    Parameters:
    
    images - Vector of input images of CV_8U type.
    
    signatures - Vector of computed signatures.
  - drawSignature
```
public static void drawSignature(Mat source,
                                 Mat signature,
                                 Mat result,
                                 float radiusToShorterSideRatio,
                                 int borderThickness)
```
    Draws signature in the source image and outputs the result. Signatures are visualized as a circle with radius based on signature weight and color based on signature color. Contrast and entropy are not visualized.
    
    Parameters:
    
    source - Source image.
    
    signature - Image signature.
    
    result - Output result.
    
    radiusToShorterSideRatio - Determines maximal radius of signature in the output image.
    
    borderThickness - Border thickness of the visualized signature.
  - drawSignature
```
public static void drawSignature(Mat source,
                                 Mat signature,
                                 Mat result,
                                 float radiusToShorterSideRatio)
```
    Draws signature in the source image and outputs the result. Signatures are visualized as a circle with radius based on signature weight and color based on signature color. Contrast and entropy are not visualized.
    
    Parameters:
    
    source - Source image.
    
    signature - Image signature.
    
    result - Output result.
    
    radiusToShorterSideRatio - Determines maximal radius of signature in the output image.
  - drawSignature
```
public static void drawSignature(Mat source,
                                 Mat signature,
                                 Mat result)
```
    Draws signature in the source image and outputs the result. Signatures are visualized as a circle with radius based on signature weight and color based on signature color. Contrast and entropy are not visualized.
    
    Parameters:
    
    source - Source image.
    
    signature - Image signature.
    
    result - Output result.
  - generateInitPoints
```
public static void generateInitPoints(MatOfPoint2f initPoints,
                                      int count,
                                      int pointDistribution)
```
    Generates initial sampling points according to selected point distribution.
    
    Parameters:
    
    initPoints - Output vector where the generated points will be saved.
    
    count - Number of points to generate.
    
    pointDistribution - Point distribution selector. Available: UNIFORM, REGULAR, NORMAL. Note: Generated coordinates are in range [0..1)
  - setClusterMinSize
```
public void setClusterMinSize(int clusterMinSize)
```
    This parameter multiplied by the index of iteration gives lower limit for cluster size. Clusters containing fewer points than specified by the limit have their centroid dismissed and points are reassigned.
    
    Parameters:
    
    clusterMinSize - automatically generated
  - setDistanceFunction
```
public void setDistanceFunction(int distanceFunction)
```
    Distance function selector used for measuring distance between two points in k-means. Available: L0_25, L0_5, L1, L2, L2SQUARED, L5, L_INFINITY.
    
    Parameters:
    
    distanceFunction - automatically generated
  - setDropThreshold
```
public void setDropThreshold(float dropThreshold)
```
    Remove centroids in k-means whose weight is lesser or equal to given threshold.
    
    Parameters:
    
    dropThreshold - automatically generated
  - setGrayscaleBits
```
public void setGrayscaleBits(int grayscaleBits)
```
    Color resolution of the greyscale bitmap represented in allocated bits (i.e., value 4 means that 16 shades of grey are used). The greyscale bitmap is used for computing contrast and entropy values.
    
    Parameters:
    
    grayscaleBits - automatically generated
  - setInitSeedIndexes
```
public void setInitSeedIndexes(MatOfInt initSeedIndexes)
```
    Initial seed indexes for the k-means algorithm.
    
    Parameters:
    
    initSeedIndexes - automatically generated
  - setIterationCount
```
public void setIterationCount(int iterationCount)
```
    Number of iterations of the k-means clustering. We use fixed number of iterations, since the modified clustering is pruning clusters (not iteratively refining k clusters).
    
    Parameters:
    
    iterationCount - automatically generated
  - setJoiningDistance
```
public void setJoiningDistance(float joiningDistance)
```
    Threshold euclidean distance between two centroids. If two cluster centers are closer than this distance, one of the centroid is dismissed and points are reassigned.
    
    Parameters:
    
    joiningDistance - automatically generated
  - setMaxClustersCount
```
public void setMaxClustersCount(int maxClustersCount)
```
    Maximal number of generated clusters. If the number is exceeded, the clusters are sorted by their weights and the smallest clusters are cropped.
    
    Parameters:
    
    maxClustersCount - automatically generated
  - setSamplingPoints
```
public void setSamplingPoints(MatOfPoint2f samplingPoints)
```
    Sets sampling points used to sample the input image.
    
    Parameters:
    
    samplingPoints - Vector of sampling points in range [0..1) Note: Number of sampling points must be greater or equal to clusterization seed count.
  - setTranslation
```
public void setTranslation(int idx,
                           float value)
```
    Translations of the individual axes of the feature space.
    
    Parameters:
    
    idx - ID of the translation
    
    value - Value of the translation Note: WEIGHT_IDX = 0; X_IDX = 1; Y_IDX = 2; L_IDX = 3; A_IDX = 4; B_IDX = 5; CONTRAST_IDX = 6; ENTROPY_IDX = 7;
  - setTranslations
```
public void setTranslations(MatOfFloat translations)
```
    Translations of the individual axes of the feature space.
    
    Parameters:
    
    translations - Values of all translations. Note: WEIGHT_IDX = 0; X_IDX = 1; Y_IDX = 2; L_IDX = 3; A_IDX = 4; B_IDX = 5; CONTRAST_IDX = 6; ENTROPY_IDX = 7;
  - setWeight
```
public void setWeight(int idx,
                      float value)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space.
    
    Parameters:
    
    idx - ID of the weight
    
    value - Value of the weight Note: WEIGHT_IDX = 0; X_IDX = 1; Y_IDX = 2; L_IDX = 3; A_IDX = 4; B_IDX = 5; CONTRAST_IDX = 6; ENTROPY_IDX = 7;
  - setWeightA
```
public void setWeightA(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeightB
```
public void setWeightB(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeightContrast
```
public void setWeightContrast(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeightEntropy
```
public void setWeightEntropy(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeightL
```
public void setWeightL(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeightX
```
public void setWeightX(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeightY
```
public void setWeightY(float weight)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space (x,y = position; L,a,b = color in CIE Lab space; c = contrast. e = entropy)
    
    Parameters:
    
    weight - automatically generated
  - setWeights
```
public void setWeights(MatOfFloat weights)
```
    Weights (multiplicative constants) that linearly stretch individual axes of the feature space.
    
    Parameters:
    
    weights - Values of all weights. Note: WEIGHT_IDX = 0; X_IDX = 1; Y_IDX = 2; L_IDX = 3; A_IDX = 4; B_IDX = 5; CONTRAST_IDX = 6; ENTROPY_IDX = 7;
  - setWindowRadius
```
public void setWindowRadius(int radius)
```
    Size of the texture sampling window used to compute contrast and entropy (center of the window is always in the pixel selected by x,y coordinates of the corresponding feature sample).
    
    Parameters:
    
    radius - automatically generated
  - finalize
```
protected void finalize()
                 throws Throwable
```
    Overrides:
    
    finalize in class Algorithm
    
    Throws:
    
    Throwable

Class PCTSignatures

Field Summary

Fields inherited from class org.opencv.core.Algorithm

Constructor Summary

Method Summary

Methods inherited from class org.opencv.core.Algorithm

Methods inherited from class java.lang.Object

Field Detail

UNIFORM

REGULAR

NORMAL

L0_25

L0_5

L1

L2

L2SQUARED

L5

L_INFINITY

MINUS

GAUSSIAN

HEURISTIC

Constructor Detail

PCTSignatures

Method Detail

__fromPtr__

create

create

create

create

create

create

getDropThreshold

getJoiningDistance

getWeightA

getWeightB

getWeightContrast

getWeightEntropy

getWeightL

getWeightX

getWeightY

getClusterMinSize

getDistanceFunction

getGrayscaleBits

getInitSeedCount

getIterationCount

getMaxClustersCount

getSampleCount

getWindowRadius

getSamplingPoints

getInitSeedIndexes

computeSignature

computeSignatures

drawSignature

drawSignature

drawSignature

generateInitPoints

setClusterMinSize

setDistanceFunction

setDropThreshold

setGrayscaleBits

setInitSeedIndexes

setIterationCount

setJoiningDistance

setMaxClustersCount

setSamplingPoints

setTranslation

setTranslations

setWeight

setWeightA

setWeightB

setWeightContrast

setWeightEntropy

setWeightL

setWeightX

setWeightY

setWeights

setWindowRadius

finalize

fromPtr