Class MultiTrackerAlt

Namespace

OpenCvSharp.Tracking.Legacy

Assembly

OpenCvSharp.dll

Base class for objects that own a single native OpenCV pointer through an OpenCvSafeHandle. The SafeHandle is the single source of truth for the native handle value and is responsible for releasing it (including from its own finalizer when the managed object is dropped without Dispose()).

public class MultiTrackerAlt : CvObject, IDisposable

Inheritance

object

CvObject

MultiTrackerAlt

Implements

IDisposable

Derived

MultiTrackerTLD

Inherited Members

CvObject.IsDisposed

CvObject.ptr

CvObject.SetSafeHandle(OpenCvSafeHandle)

CvObject.Dispose()

CvObject.Dispose(bool)

CvObject.DisposeManaged()

CvObject.ThrowIfDisposed()

CvObject.CvPtr

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Unlike MultiTracker, cv::legacy::MultiTracker_Alt does not derive from cv::Algorithm and has no create() factory - it is a plain, directly-constructed C++ class with public fields, so this wrapper follows the direct-allocation (CvObject-based) pattern instead of the CvPtrObject/cv::Ptr factory pattern used elsewhere in this module.

Constructors

MultiTrackerAlt()

Constructor for Multitracker.

public MultiTrackerAlt()

Properties

BoundingBoxes

Bounding boxes list for Multi-Object-Tracker.

public Rect2d[] BoundingBoxes { get; }

Property Value

Rect2d[]

TargetNum

Current number of targets in tracking-list.

public int TargetNum { get; }

Property Value

int

Methods

AddTarget(Mat, Rect2d, LegacyTracker)

Add a new target to a tracking-list and initialize the tracker with a known bounding box that surrounded the target.

public bool AddTarget(Mat image, Rect2d boundingBox, LegacyTracker trackerAlgorithm)

Parameters

image Mat

The initial frame

boundingBox Rect2d

The initial bounding box of target

trackerAlgorithm LegacyTracker

Multi-tracker algorithm

Returns

bool

True if new target initialization went successfully, false otherwise

DisposeUnmanaged()

Releases unmanaged resources

protected override void DisposeUnmanaged()

Update(Mat)

Update all trackers from the tracking-list, find a new most likely bounding boxes for the targets.

public bool Update(Mat image)

Parameters

image Mat

The current frame

Returns

bool

True means that all targets were located and false means that tracker couldn't locate one of the targets in the current frame. Note that the latter does not imply that tracker has failed - the target may indeed be missing from the frame (say, out of sight).