MATLAB: Deviation of the tracked position from the ground truth in Tracking

digital image processingtracking

Is there any metric which gives the deviation of the tracked position from the ground truth position in Tracking of point objects in image processing?

ie. I want to find out whether the tracked position is good (near to ground truth value).

Thanks in Advance.

Best Answer

This may help you out:

https://jp.mathworks.com/help/fusion/ug/introduction-to-tracking-metrics.html

Introduction of Tracking metrics.

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MATLAB: How do you merge multiple tracks coming from different sensors to a single track? how does the algorithm perform track fusion

As of R2018b we only support a detection-to-track workflow using our trackers, not track-to-track fusers.
By default, the trackers calculate the cost of assigning detections to tracks using the distance method of the track filter. You can bypass it and supply the cost matrix as part of the input if you set the tracker’s HasCostMatrixInput to true.
Assignment is done using the assignment algorithm of your choice. You can also use a custom algorithm if you want.
Once detections are assigned to track (up to one per sensor, but as many as the number of sensors), the track will be updated with the detections. Every detection carries its timestamp. The track will be predicted to the time of the first detection, corrected with it, then predicted to the next detection, corrected, etc., until all the detections are fused. The fusion itself is done using the tracking filter that you choose to use.

MATLAB: Loading existing Ground Truth in Ground Truth Labeler

Hi,

Assuming you are using MATLAB R2019b, the input to groundTruthLabeler can be either a sessionFile or others as mentioned here: https://www.mathworks.com/help/driving/ref/groundtruthlabeler-app.html

The sessionFile will load the saved session that you have saved using the app.

The reason behind the error message you are getting is probably because the argument you are passing is not a proper Session object. If you will load the sessionFile (MAT-File) into your workspace by using the command

load('groundTruthLabelingSession1.mat');

A variable called groundTruthLabelingSession gets loaded into your workspace. To know the path to the ground truth from the session object, you can do

groundTruthLabelingSession

after loading the sessionFile into workspace.

If you have generated the MAT-file using Export labels button, it will save a groundTruth object as MAT-file. You may not be able to directly use this object to launch the app.

Best Answer

Related Solutions

MATLAB: How do you merge multiple tracks coming from different sensors to a single track? how does the algorithm perform track fusion

MATLAB: Loading existing Ground Truth in Ground Truth Labeler

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