Class RidgeDetection

Inheritance
Object
RidgeDetection
Inherited Members
Namespace: AudioAnalysisTools
Assembly: AudioAnalysisTools.dll
Syntax
public class RidgeDetection

Methods

| Improve this Doc View Source

IdentifyHorizontalRidges(Double[,], Double)

Declaration
public static byte[, ] IdentifyHorizontalRidges(double[, ] matrix, double threshold)
Parameters
Type Name Description
Double[,] matrix
Double threshold
Returns
Type Description
Byte[,]
| Improve this Doc View Source

IdentifySpectralPeaks(Double[,])

Declaration
public static double[, ] IdentifySpectralPeaks(double[, ] matrix)
Parameters
Type Name Description
Double[,] matrix
Returns
Type Description
Double[,]
| Improve this Doc View Source

IdentifySpectralRidges(Double[,], Double)

Declaration
public static byte[, ] IdentifySpectralRidges(double[, ] matrix, double threshold)
Parameters
Type Name Description
Double[,] matrix
Double threshold
Returns
Type Description
Byte[,]
| Improve this Doc View Source

IdentifySpectralRidgesInFreqDirection(Double[,], Double)

Declaration
public static byte[, ] IdentifySpectralRidgesInFreqDirection(double[, ] matrix, double threshold)
Parameters
Type Name Description
Double[,] matrix
Double threshold
Returns
Type Description
Byte[,]
| Improve this Doc View Source

JoinDisconnectedRidgesInMatrix(Byte[,], Double[,], Double)

JOINS DISCONNECTED RIDGES.

Declaration
public static byte[, ] JoinDisconnectedRidgesInMatrix(byte[, ] hits, double[, ] matrix, double threshold)
Parameters
Type Name Description
Byte[,] hits
Double[,] matrix
Double threshold
Returns
Type Description
Byte[,]
| Improve this Doc View Source

Sobel5X5RidgeDetection_Version2(Double[,])

returns four matrices containing the values of ridges in four directions.

Declaration
public static List<double[, ]> Sobel5X5RidgeDetection_Version2(double[, ] matrix)
Parameters
Type Name Description
Double[,] matrix
Returns
Type Description
List<Double[,]>
| Improve this Doc View Source

Sobel5X5RidgeDetectionExperiment(Double[,], Double)

Returns a byte matrix of ridge directions 0 = no ridge detected or below magnitude threshold. 1 = ridge direction = horizontal or slope = 0; 2 = ridge is positive slope or pi/4 3 = ridge is vertical or pi/2 4 = ridge is negative slope or 3pi/4.

Declaration
public static byte[, ] Sobel5X5RidgeDetectionExperiment(double[, ] matrix, double magnitudeThreshold)
Parameters
Type Name Description
Double[,] matrix
Double magnitudeThreshold
Returns
Type Description
Byte[,]
| Improve this Doc View Source

Sobel5X5RidgeDetectionVersion1(Double[,], Double)

Declaration
public static byte[, ] Sobel5X5RidgeDetectionVersion1(double[, ] matrix, double magnitudeThreshold)
Parameters
Type Name Description
Double[,] matrix
Double magnitudeThreshold
Returns
Type Description
Byte[,]
| Improve this Doc View Source

SpectralRidges2Intensity(Byte[,], Double[,])

CONVERTs a binary matrix of spectral peak tracks to an output matrix containing the acoustic intensity in the neighbourhood of those peak tracks.

Declaration
public static double[, ] SpectralRidges2Intensity(byte[, ] binary, double[, ] sonogram)
Parameters
Type Name Description
Byte[,] binary

The spectral peak tracks.
Double[,] sonogram
Returns
Type Description
Double[,]
| Improve this Doc View Source

StructureTensorRidgeDetection(Double[,], Double, Double)

matrix is assumed to be a spectrogram image spectrogram, whose rows are freq bins and columns are time frames.

Declaration
public static byte[, ] StructureTensorRidgeDetection(double[, ] matrix, double magnitudeThreshold, double dominanceThreshold)
Parameters
Type Name Description
Double[,] matrix
Double magnitudeThreshold
Double dominanceThreshold
Returns
Type Description
Byte[,]

Extension Methods