Cv2CalcOpticalFlowPyrLK Method (InputArray, InputArray, Point2f, Point2f, Byte, Single, NullableSize, Int32, NullableTermCriteria, OpticalFlowFlags, Double)

computes sparse optical flow using multi-scale Lucas-Kanade algorithm

Namespace: OpenCvSharp
Assembly: OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0

Syntax

C++

Copy

public static void CalcOpticalFlowPyrLK(
	InputArray prevImg,
	InputArray nextImg,
	Point2f[] prevPts,
	ref Point2f[] nextPts,
	out byte[] status,
	out float[] err,
	Nullable<Size> winSize = null,
	int maxLevel = 3,
	Nullable<TermCriteria> criteria = null,
	OpticalFlowFlags flags = OpticalFlowFlags.None,
	double minEigThreshold = 0.0001
)

Public Shared Sub CalcOpticalFlowPyrLK ( 
	prevImg As InputArray,
	nextImg As InputArray,
	prevPts As Point2f(),
	ByRef nextPts As Point2f(),
	<OutAttribute> ByRef status As Byte(),
	<OutAttribute> ByRef err As Single(),
	Optional winSize As Nullable(Of Size) = Nothing,
	Optional maxLevel As Integer = 3,
	Optional criteria As Nullable(Of TermCriteria) = Nothing,
	Optional flags As OpticalFlowFlags = OpticalFlowFlags.None,
	Optional minEigThreshold As Double = 0.0001
)

public:
static void CalcOpticalFlowPyrLK(
	InputArray^ prevImg, 
	InputArray^ nextImg, 
	array<Point2f>^ prevPts, 
	array<Point2f>^% nextPts, 
	[OutAttribute] array<unsigned char>^% status, 
	[OutAttribute] array<float>^% err, 
	Nullable<Size> winSize = nullptr, 
	int maxLevel = 3, 
	Nullable<TermCriteria> criteria = nullptr, 
	OpticalFlowFlags flags = OpticalFlowFlags::None, 
	double minEigThreshold = 0.0001
)

static member CalcOpticalFlowPyrLK : 
        prevImg : InputArray * 
        nextImg : InputArray * 
        prevPts : Point2f[] * 
        nextPts : Point2f[] byref * 
        status : byte[] byref * 
        err : float32[] byref * 
        ?winSize : Nullable<Size> * 
        ?maxLevel : int * 
        ?criteria : Nullable<TermCriteria> * 
        ?flags : OpticalFlowFlags * 
        ?minEigThreshold : float 
(* Defaults:
        let _winSize = defaultArg winSize null
        let _maxLevel = defaultArg maxLevel 3
        let _criteria = defaultArg criteria null
        let _flags = defaultArg flags OpticalFlowFlags.None
        let _minEigThreshold = defaultArg minEigThreshold 0.0001
*)
-> unit

Parameters

prevImg: Type: OpenCvSharpInputArray
[Missing <param name="prevImg"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
nextImg: Type: OpenCvSharpInputArray
[Missing <param name="nextImg"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
prevPts: Type: OpenCvSharpPoint2f
[Missing <param name="prevPts"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
nextPts: Type: OpenCvSharpPoint2f
[Missing <param name="nextPts"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
status: Type: SystemByte
[Missing <param name="status"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
err: Type: SystemSingle
[Missing <param name="err"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
winSize (Optional): Type: SystemNullableSize
[Missing <param name="winSize"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
maxLevel (Optional): Type: SystemInt32
[Missing <param name="maxLevel"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
criteria (Optional): Type: SystemNullableTermCriteria
[Missing <param name="criteria"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
flags (Optional): Type: OpenCvSharpOpticalFlowFlags
[Missing <param name="flags"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]
minEigThreshold (Optional): Type: SystemDouble
[Missing <param name="minEigThreshold"/> documentation for "M:OpenCvSharp.Cv2.CalcOpticalFlowPyrLK(OpenCvSharp.InputArray,OpenCvSharp.InputArray,OpenCvSharp.Point2f[],OpenCvSharp.Point2f[]@,System.Byte[]@,System.Single[]@,System.Nullable{OpenCvSharp.Size},System.Int32,System.Nullable{OpenCvSharp.TermCriteria},OpenCvSharp.OpticalFlowFlags,System.Double)"]

Reference

Cv2 Class

CalcOpticalFlowPyrLK Overload

OpenCvSharp Namespace