Class AKAZE

Class implementing the AKAZE keypoint detector and descriptor extractor, described in @cite ANB13

Inheritance
System.Object
DisposableObject
DisposableCvObject
Algorithm
Feature2D
AKAZE
Implements
Inherited Members
Namespace: OpenCvSharp
Assembly: OpenCvSharp.dll
Syntax
public class AKAZE : Feature2D, ICvPtrHolder
Remarks

AKAZE descriptors can only be used with KAZE or AKAZE keypoints. Try to avoid using extract and detect instead of operator() due to performance reasons. .. [ANB13] Fast Explicit Diffusion for Accelerated Features in Nonlinear Scale Spaces. Pablo F. Alcantarilla, Jesús Nuevo and Adrien Bartoli. In British Machine Vision Conference (BMVC), Bristol, UK, September 2013.

Constructors

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AKAZE(IntPtr)

Constructor

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

Properties

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AKAZEDescriptorChannels

Declaration
public int AKAZEDescriptorChannels { get; set; }
Property Value
Type Description
System.Int32
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AKAZEDescriptorSize

Declaration
public int AKAZEDescriptorSize { get; set; }
Property Value
Type Description
System.Int32
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AKAZEDescriptorType

Declaration
public AKAZEDescriptorType AKAZEDescriptorType { get; set; }
Property Value
Type Description
AKAZEDescriptorType
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DiffusivityType

Declaration
public KAZEDiffusivityType DiffusivityType { get; set; }
Property Value
Type Description
KAZEDiffusivityType
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NOctaveLayers

Declaration
public int NOctaveLayers { get; set; }
Property Value
Type Description
System.Int32
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NOctaves

Declaration
public int NOctaves { get; set; }
Property Value
Type Description
System.Int32
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Threshold

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

Methods

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Create(AKAZEDescriptorType, Int32, Int32, Single, Int32, Int32, KAZEDiffusivityType)

The AKAZE constructor

Declaration
public static AKAZE Create(AKAZEDescriptorType descriptorType = AKAZEDescriptorType.MLDB, int descriptorSize = 0, int descriptorChannels = 3, float threshold = 0.001F, int nOctaves = 4, int nOctaveLayers = 4, KAZEDiffusivityType diffusivity = KAZEDiffusivityType.DiffPmG2)
Parameters
Type Name Description
AKAZEDescriptorType descriptorType

Type of the extracted descriptor: DESCRIPTOR_KAZE, DESCRIPTOR_KAZE_UPRIGHT, DESCRIPTOR_MLDB or DESCRIPTOR_MLDB_UPRIGHT.
System.Int32 descriptorSize

Size of the descriptor in bits. 0 -> Full size
System.Int32 descriptorChannels

Number of channels in the descriptor (1, 2, 3)
System.Single threshold

Detector response threshold to accept point
System.Int32 nOctaves

Maximum octave evolution of the image
System.Int32 nOctaveLayers

Default number of sublevels per scale level
KAZEDiffusivityType diffusivity

Diffusivity type. DIFF_PM_G1, DIFF_PM_G2, DIFF_WEICKERT or DIFF_CHARBONNIER
Returns
Type Description
AKAZE
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DisposeManaged()

Releases managed resources

Declaration
protected override void DisposeManaged()
Overrides
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DisposeUnmanaged()

Declaration
protected override void DisposeUnmanaged()
Overrides
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Get()

Declaration
public override IntPtr Get()
Returns
Type Description
IntPtr

Implements