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Create a MCvSURFParams using the specific values

Namespace: Emgu.CV.Features2D
Assembly: Emgu.CV (in Emgu.CV.dll) Version: 2.4.2.1777 (2.4.2.1777)

Syntax

C#
public SURFDetector(
	double hessianThresh,
	bool extendedFlag,
	int nOctaves,
	int nOctaveLayers
)
Visual Basic
Public Sub New ( _
	hessianThresh As Double, _
	extendedFlag As Boolean, _
	nOctaves As Integer, _
	nOctaveLayers As Integer _
)
Visual C++
public:
SURFDetector(
	double hessianThresh, 
	bool extendedFlag, 
	int nOctaves, 
	int nOctaveLayers
)

Parameters

hessianThresh
Type: System..::..Double
Only features with keypoint.hessian larger than that are extracted. good default value is ~300-500 (can depend on the average local contrast and sharpness of the image). user can further filter out some features based on their hessian values and other characteristics
extendedFlag
Type: System..::..Boolean
false means basic descriptors (64 elements each), true means extended descriptors (128 elements each)
nOctaves
Type: System..::..Int32
The number of octaves to be used for extraction. With each next octave the feature size is doubled (3 by default)
nOctaveLayers
Type: System..::..Int32
The number of layers within each octave (4 by default)

See Also