Class RadialVarianceHash

Image hash based on Radon transform.

Inheritance
System.Object
DisposableObject
DisposableCvObject
Algorithm
ImgHashBase
RadialVarianceHash
Implements
Inherited Members
Namespace: OpenCvSharp.ImgHash
Assembly: OpenCvSharp.dll
Syntax
public class RadialVarianceHash : ImgHashBase, ICvPtrHolder

Constructors

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RadialVarianceHash(IntPtr)

Declaration
protected RadialVarianceHash(IntPtr p)
Parameters
Type Name Description
IntPtr p

Properties

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NumOfAngleLine

The number of angles to consider

Declaration
public int NumOfAngleLine { get; set; }
Property Value
Type Description
System.Int32
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Sigma

Gaussian kernel standard deviation

Declaration
public double Sigma { get; set; }
Property Value
Type Description
System.Double

Methods

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Compute(InputArray, OutputArray)

Computes average hash value of the input image

Declaration
public override void Compute(InputArray inputArr, OutputArray outputArr)
Parameters
Type Name Description
InputArray inputArr

input image want to compute hash value, type should be CV_8UC4, CV_8UC3, CV_8UC1.
OutputArray outputArr

Hash value of input
Overrides
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Create(Double, Int32)

Create BlockMeanHash object

Declaration
public static RadialVarianceHash Create(double sigma = 1, int numOfAngleLine = 180)
Parameters
Type Name Description
System.Double sigma

Gaussian kernel standard deviation
System.Int32 numOfAngleLine

The number of angles to consider
Returns
Type Description
RadialVarianceHash
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DisposeManaged()

Releases managed resources

Declaration
protected override void DisposeManaged()
Overrides

Implements