legacy_MultiTracker (OpenCV 4.9.0 Java documentation)

java.lang.Object
- org.opencv.core.Algorithm
- - org.opencv.tracking.legacy_MultiTracker

```
public class legacy_MultiTracker
extends Algorithm
```
This class is used to track multiple objects using the specified tracker algorithm. The %MultiTracker is naive implementation of multiple object tracking. It process the tracked objects independently without any optimization accross the tracked objects.

Field Summary
- Fields inherited from class org.opencv.core.Algorithm
  nativeObj

Constructor Summary

Constructors
Modifier Constructor Description

legacy_MultiTracker()
Constructor.

protected legacy_MultiTracker(long addr)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static legacy_MultiTracker`	`__fromPtr__(long addr)`
`boolean`	`add(legacy_Tracker newTracker, Mat image, Rect2d boundingBox)`	Add a new object to be tracked.
`protected void`	`finalize()`
`MatOfRect2d`	`getObjects()`	Returns a reference to a storage for the tracked objects, each object corresponds to one tracker algorithm
`boolean`	`update(Mat image, MatOfRect2d boundingBox)`	Update the current tracking status.

Methods inherited from class org.opencv.core.Algorithm
clear, empty, getDefaultName, getNativeObjAddr, save

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - legacy_MultiTracker
```
protected legacy_MultiTracker(long addr)
```
  - legacy_MultiTracker
```
public legacy_MultiTracker()
```
    Constructor.
- Method Detail
  - __fromPtr__
```
public static legacy_MultiTracker __fromPtr__(long addr)
```
  - add
```
public boolean add(legacy_Tracker newTracker,
                   Mat image,
                   Rect2d boundingBox)
```
    Add a new object to be tracked.
    
    Parameters:
    
    newTracker - tracking algorithm to be used
    
    image - input image
    
    boundingBox - a rectangle represents ROI of the tracked object
    
    Returns:
    
    automatically generated
  - update
```
public boolean update(Mat image,
                      MatOfRect2d boundingBox)
```
    Update the current tracking status.
    
    Parameters:
    
    image - input image
    
    boundingBox - the tracking result, represent a list of ROIs of the tracked objects.
    
    Returns:
    
    automatically generated
  - getObjects
```
public MatOfRect2d getObjects()
```
    Returns a reference to a storage for the tracked objects, each object corresponds to one tracker algorithm
    
    Returns:
    
    automatically generated
  - finalize
```
protected void finalize()
                 throws java.lang.Throwable
```
    Overrides:
    
    finalize in class Algorithm
    
    Throws:
    
    java.lang.Throwable