Class OtsuThresholder

Go to following link for info on Otsu threshold http://www.labbookpages.co.uk/software/imgProc/otsuThreshold.html.

Inheritance
Object
OtsuThresholder
Inherited Members
Namespace: TowseyLibrary
Assembly: TowseyLibrary.dll
Syntax
public class OtsuThresholder

Constructors

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OtsuThresholder()

Initializes a new instance of the OtsuThresholder class. CONSTRUCTOR.

Declaration
public OtsuThresholder()

Methods

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CalculateThreshold(Byte[])

Declaration
public int CalculateThreshold(byte[] srcData)
Parameters
Type Name Description
Byte[] srcData
Returns
Type Description
Int32
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CalculateThreshold(Byte[], out Byte[])

Declaration
public int CalculateThreshold(byte[] srcData, out byte[] monoData)
Parameters
Type Name Description
Byte[] srcData
Byte[] monoData
Returns
Type Description
Int32
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ConvertColourImageToGreyScaleMatrix(Image<Rgb24>)

Declaration
public static byte[, ] ConvertColourImageToGreyScaleMatrix(Image<Rgb24> image)
Parameters
Type Name Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24> image
Returns
Type Description
Byte[,]
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ConvertMatrixToGreyScaleImage(Byte[,])

Declaration
public static Image<Rgb24> ConvertMatrixToGreyScaleImage(byte[, ] M)
Parameters
Type Name Description
Byte[,] M
Returns
Type Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>
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ConvertMatrixToReversedGreyScaleImage(Byte[,])

Declaration
public static Image<Rgb24> ConvertMatrixToReversedGreyScaleImage(byte[, ] M)
Parameters
Type Name Description
Byte[,] M
Returns
Type Description
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24>
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DoLocalOtsuThresholding(Double[,], out Byte[,])

Declaration
public static void DoLocalOtsuThresholding(double[, ] m, out byte[, ] opByteMatrix)
Parameters
Type Name Description
Double[,] m

The spectral sonogram passes as matrix of doubles.
Byte[,] opByteMatrix
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Execute(OtsuThresholder.Arguments)

Declaration
public static void Execute(OtsuThresholder.Arguments arguments)
Parameters
Type Name Description
OtsuThresholder.Arguments arguments
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GetGlobalOtsuThreshold(Double[,], out Byte[,], out Double, out Image<Rgb24>)

Declaration
public static void GetGlobalOtsuThreshold(double[, ] inputMatrix, out byte[, ] opByteMatrix, out double opThreshold, out Image<Rgb24> histogramImage)
Parameters
Type Name Description
Double[,] inputMatrix
Byte[,] opByteMatrix
Double opThreshold
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24> histogramImage
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GetHistData()

Declaration
public int[] GetHistData()
Returns
Type Description
Int32[]
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getMaxLevelValue()

Declaration
public int getMaxLevelValue()
Returns
Type Description
Int32
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GetOtsuThreshold(Byte[,], out Byte[,], out Int32)

Declaration
public static void GetOtsuThreshold(byte[, ] matrix, out byte[, ] m2, out int threshold)
Parameters
Type Name Description
Byte[,] matrix
Byte[,] m2
Int32 threshold
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GetOtsuThreshold(Byte[,], out Byte[,], out Int32, out Image<Rgb24>)

Declaration
public static void GetOtsuThreshold(byte[, ] matrix, out byte[, ] m2, out int threshold, out Image<Rgb24> histogramImage)
Parameters
Type Name Description
Byte[,] matrix
Byte[,] m2
Int32 threshold
SixLabors.ImageSharp.Image<SixLabors.ImageSharp.PixelFormats.Rgb24> histogramImage
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getThreshold()

Declaration
public int getThreshold()
Returns
Type Description
Int32

Extension Methods