Class KeyPointsFilter

A class filters a vector of keypoints.

Inheritance

System.Object

KeyPointsFilter

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: OpenCvSharp

Assembly: OpenCvSharp.dll

Syntax

public static class KeyPointsFilter

Methods

RemoveDuplicated(IEnumerable<KeyPoint>)

Remove duplicated keypoints.

Declaration

public static KeyPoint[] RemoveDuplicated(IEnumerable<KeyPoint> keypoints)

Parameters

Type	Name	Description
IEnumerable<OpenCvSharp.KeyPoint>	keypoints

Returns

Type	Description
OpenCvSharp.KeyPoint[]

RemoveDuplicatedSorted(IEnumerable<KeyPoint>)

Remove duplicated keypoints and sort the remaining keypoints

Declaration

public static KeyPoint[] RemoveDuplicatedSorted(IEnumerable<KeyPoint> keypoints)

Parameters

Type	Name	Description
IEnumerable<OpenCvSharp.KeyPoint>	keypoints

Returns

Type	Description
OpenCvSharp.KeyPoint[]

RetainBest(IEnumerable<KeyPoint>, Int32)

Retain the specified number of the best keypoints (according to the response)

Declaration

public static KeyPoint[] RetainBest(IEnumerable<KeyPoint> keypoints, int nPoints)

Parameters

Type	Name	Description
IEnumerable<OpenCvSharp.KeyPoint>	keypoints
System.Int32	nPoints

Returns

Type	Description
OpenCvSharp.KeyPoint[]

RunByImageBorder(IEnumerable<KeyPoint>, Size, Int32)

Remove keypoints within borderPixels of an image edge.

Declaration

public static KeyPoint[] RunByImageBorder(IEnumerable<KeyPoint> keypoints, Size imageSize, int borderSize)

Parameters

Type	Name	Description
IEnumerable<OpenCvSharp.KeyPoint>	keypoints
OpenCvSharp.Size	imageSize
System.Int32	borderSize

Returns

Type	Description
OpenCvSharp.KeyPoint[]

RunByKeypointSize(IEnumerable<KeyPoint>, Single, Single)

Remove keypoints of sizes out of range.

Declaration

public static KeyPoint[] RunByKeypointSize(IEnumerable<KeyPoint> keypoints, float minSize, float maxSize = 3.40282347E+38F)

Parameters

Type	Name	Description
IEnumerable<OpenCvSharp.KeyPoint>	keypoints
System.Single	minSize
System.Single	maxSize

Returns

Type	Description
OpenCvSharp.KeyPoint[]

RunByPixelsMask(IEnumerable<KeyPoint>, Mat)

Remove keypoints from some image by mask for pixels of this image.

Declaration

public static KeyPoint[] RunByPixelsMask(IEnumerable<KeyPoint> keypoints, Mat mask)

Parameters

Type	Name	Description
IEnumerable<OpenCvSharp.KeyPoint>	keypoints
Mat	mask

Returns

Type	Description
OpenCvSharp.KeyPoint[]