Class KeyPointsFilter

Namespace

OpenCvSharp

Assembly

OpenCvSharp.dll

A class filters a vector of keypoints.

public static class KeyPointsFilter

Inheritance

object

KeyPointsFilter

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Methods

RemoveDuplicated(IEnumerable<KeyPoint>)

Remove duplicated keypoints.

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

Parameters

keypoints IEnumerable<KeyPoint>

Returns

KeyPoint[]

RemoveDuplicatedSorted(IEnumerable<KeyPoint>)

Remove duplicated keypoints and sort the remaining keypoints

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

Parameters

keypoints IEnumerable<KeyPoint>

Returns

KeyPoint[]

RetainBest(IEnumerable<KeyPoint>, int)

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

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

Parameters

keypoints IEnumerable<KeyPoint>

nPoints int

Returns

KeyPoint[]

RunByImageBorder(IEnumerable<KeyPoint>, Size, int)

Remove keypoints within borderPixels of an image edge.

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

Parameters

keypoints IEnumerable<KeyPoint>

imageSize Size

borderSize int

Returns

KeyPoint[]

RunByKeypointSize(IEnumerable<KeyPoint>, float, float)

Remove keypoints of sizes out of range.

public static KeyPoint[] RunByKeypointSize(IEnumerable<KeyPoint> keypoints, float minSize, float maxSize = 3.4028235E+38)

Parameters

keypoints IEnumerable<KeyPoint>

minSize float

maxSize float

Returns

KeyPoint[]

RunByPixelsMask(IEnumerable<KeyPoint>, InputArray)

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

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

Parameters

keypoints IEnumerable<KeyPoint>

mask InputArray

Returns

KeyPoint[]

RunByPixelsMask2VectorPoint(IEnumerable<KeyPoint>, IEnumerable<IEnumerable<Point>>, InputArray)

Remove objects from some image and a vector of points by mask for pixels of this image.

public static (KeyPoint[] Keypoints, Point[][] RemoveFrom) RunByPixelsMask2VectorPoint(IEnumerable<KeyPoint> keypoints, IEnumerable<IEnumerable<Point>> removeFrom, InputArray mask)

Parameters

keypoints IEnumerable<KeyPoint>

removeFrom IEnumerable<IEnumerable<Point>>

mask InputArray

Returns

(KeyPoint[] Keypoints, Point[][] RemoveFrom)