TRAX unable to contact tracker

[Hjalmar Karlsson]

I've been able to run through the entire VOT2013 dataset, trying to run the 2015 dataset my tracker gets stuck and I can't figure out what the problem is. The last bit of output is the following:

@@TRAX:quit
@@TRAX:hello "trax.image=path" "trax.region=polygon" "trax.version=1"
@@TRAX:initialize "/home/hka/VOT/vot-toolkit-vot2015-postchallenge/workspace_2015/sequences/motocross2/00000059.jpg" "592.18,571.74,664.12,782.04,903.16,697.26,831.21,486.96"
@@TRAX:state "592.18,571.74,664.12,782.04,903.16,697.26,831.21,486.96"
@@TRAX:frame "/home/hka/VOT/vot-toolkit-vot2015-postchallenge/workspace_2015/sequences/motocross2/00000060.jpg"
Error: Unable to contact tracker.
@@TRAX:quit

      --------------------- End raw output -------------------------
Error using trax_wrapper (line 211)
Error during tracker execution.

Error in tracker_evaluate (line 98)
            [trajectory, time] = tracker.run(tracker, sequence, context);

Error in workspace_evaluate>execute_iterator (line 76)
            tracker_evaluate(event.tracker, event.sequence, sequence_directory, ...

Error in iterate (line 65)
            context = iterator(event, context);

Error in workspace_evaluate (line 36)
iterate(experiments, trackers, sequences, 'iterator', iterator, 'context', context);

Error in run_experiments (line 10)
workspace_evaluate(tracker, sequences, experiments);
 

Where should I start looking for the cause? Attached the enitre output from running >>run_experiments.

[Hjalmar Karlsson]

I also have an other (probably unrelated) problem. After running run_experiments on vot2013 dataset and downloading vot2013_results.zip I get the following when running run_analysis:
-------------------------------------------------------------------------------
>> run_analysis
Initializing VOT environment ...
Loading sequences ...
WARNING: No configuration for tracker AIF found
.
.
.
WARNING: No configuration for tracker TLD found
Generating article report
Error using text
Invalid parameter/value pair arguments

Error in generate_trackers_legend (line 101)
        text(X(t) + 0.2, Y(t), trackers{t}.label, args{:});

Error in report_article (line 62)
    lh = generate_trackers_legend(trackers, 'visible', false, 'columns', columns, 'rows', rows);

Error in run_analysis (line 13)
report_article(context, experiments, trackers, sequences, 'spotlight', 'ptz'); % This report is more suitable for results included in a paper
-------------------------------------------------------------------------------

I'm running vot-toolkit in Matlab R2015b.

[Hjalmar Karlsson]

The problem with "Error using text Invalid parameter/value pair arguments" was from me not having set a tracker label, setting tracker_label in tracker_*.m fixed that problem. Fixing that I got a new one:

Generating article report
  Ranking report ...
      Ranking analysis for experiment region_noise ...
          Processing selector sequence_bicycle ...
            Processing tracker ptz ...
            Warning: less than 25 samples when comparing trackers. Cannot reject hypothesis
Error using ranksum (line 62)
No data remaining after removal of NaNs.

Attach entire output.

[Luka Čehovin]

Hello and welcome to the forum. Regarding this question I strongly suspect that there is a problem with the initialization region and how does your tracker handle it. Some annotations span outside of the image (which we unfortunately did not discover during dataset construction) and can therefore cause the tracker to crash or behave strangely if this is not handled. As you can see from the output this only happens for one sequence and not even at the beginning but after the re-initialization. I recommend that you try to initialize your tracker on sequence motocross2 at frame 59 and 60 and see if this is the case.

regards,

On Tuesday, February 9, 2016 at 10:03:39 AM UTC+1, Hjalmar Karlsson wrote:

[Luka Čehovin]

Such problems can occur in two situations: either the tracker fails too often or some results are missing. Can you verify if any of those could be the problem?

[Hjalmar Karlsson]

Thanks :)

Removing the trackers: ASAM, MORP, ORIJA and SwATrack fixed the problem with run_analysis on the vot2013 results.

Adding a check that changes the initialization region to make sure it is inside the image fixed the other problem! Thanks for the great support!