HOGDescriptor Class |
HOG (Histogram-of-Oriented-Gradients) Descriptor and Object Detector
Inheritance HierarchyNamespace: OpenCvSharp
Assembly: OpenCvSharp (in OpenCvSharp.dll) Version: 3.4.1.20180605-33-CaRLSharp
SyntaxThe HOGDescriptor type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | HOGDescriptor() |
Default constructor
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| HOGDescriptor(IntPtr) |
Initializes from pointer
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| HOGDescriptor(String) | Initializes a new instance of the HOGDescriptor class |
| HOGDescriptor(Nullable<Size>, Nullable<Size>, Nullable<Size>, Nullable<Size>, Int32, Int32, Double, HistogramNormType, Double, Boolean, Int32) |
Creates the HOG descriptor and detector.
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Properties| Name | Description | |
|---|---|---|
 | AllocatedMemory |
Gets or sets a memory address allocated by AllocMemory.
(Inherited from DisposableObject.) |
| AllocatedMemorySize |
Gets or sets the byte length of the allocated memory
(Inherited from DisposableObject.) |
 | BlockSize | |
| BlockStride | |
| CellSize | |
| CvPtr |
Native pointer of OpenCV structure
(Inherited from DisposableCvObject.) |
| DerivAperture | |
| GammaCorrection | |
| HistogramNormType | |
| IsDisposed |
Gets a value indicating whether this instance has been disposed.
(Inherited from DisposableObject.) |
| IsEnabledDispose |
Gets or sets a value indicating whether you permit disposing this instance.
(Inherited from DisposableObject.) |
| L2HysThreshold | |
| Nbins | |
| NLevels | |
| WinSigma | |
| WinSize |
Methods| Name | Description | |
|---|---|---|
 | AllocGCHandle |
Pins the object to be allocated by cvSetData.
(Inherited from DisposableObject.) |
| AllocMemory |
Allocates the specified size of memory.
(Inherited from DisposableObject.) |
| CheckDetectorSize | |
| Compute | |
| ComputeGradient | |
| Detect(Mat, Double, Nullable<Size>, Nullable<Size>,Point[]) |
Performs object detection without a multi-scale window.
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| Detect(Mat,Double[], Double, Nullable<Size>, Nullable<Size>,Point[]) |
Performs object detection without a multi-scale window.
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| DetectMultiScale(Mat, Double, Nullable<Size>, Nullable<Size>, Double, Int32) |
Performs object detection with a multi-scale window.
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| DetectMultiScale(Mat,Double[], Double, Nullable<Size>, Nullable<Size>, Double, Int32) |
Performs object detection with a multi-scale window.
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| DetectMultiScaleROI |
evaluate specified ROI and return confidence value for each location in multiple scales
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| DetectROI |
evaluate specified ROI and return confidence value for each location
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| Dispose |
Releases the resources
(Inherited from DisposableObject.) |
| DisposeManaged |
Releases managed resources
(Inherited from DisposableObject.) |
| DisposeUnmanaged |
Releases unmanaged resources
(Overrides DisposableCvObject.DisposeUnmanaged().) |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize |
Destructor
(Inherited from DisposableObject.) |
 | GetDaimlerPeopleDetector |
This method returns 1981 SVM coeffs obtained from daimler's base.
To use these coeffs the detection window size should be (48,96)
|
| GetDefaultPeopleDetector |
Returns coefficients of the classifier trained for people detection (for default window size).
|
| GetDescriptorSize | |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| GetWinSigma | |
| GroupRectangles | |
| Load | |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| NotifyMemoryPressure |
Notifies the allocated size of memory.
(Inherited from DisposableObject.) |
| ReadALTModel |
read/parse Dalal's alt model file
|
| Save | |
| SetSVMDetector | |
| ThrowIfDisposed |
If this object is disposed, then ObjectDisposedException is thrown.
(Inherited from DisposableObject.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
Fields| Name | Description | |
|---|---|---|
 | DaimlerPeopleDetector |
This field returns 1981 SVM coeffs obtained from daimler's base.
To use these coeffs the detection window size should be (48,96)
|
 | dataHandle |
Gets or sets a handle which allocates using cvSetData.
(Inherited from DisposableObject.) |
| DefaultNlevels | |
| DefaultPeopleDetector |
Returns coefficients of the classifier trained for people detection (for default window size).
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| L2Hys | |
| ptr |
Data pointer
(Inherited from DisposableCvObject.) |
| SizeOf |
sizeof(HOGDescriptor)
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See Also