realtime experiments - penalize tracker if frame processing takes longer than one frame duration

[daniel-d-koenig]

To my mind, the trackers should be penalized if they need longer than one frame duration. In the current implementation it is tolerated that the processing of one frame can take longer than one frame duration as long as not more than twice the frame duration. Is this correct (see code line below)?

https://github.com/votchallenge/vot-toolkit-python/blob/b23463652bfaba2393079b3517c4bc8bae3e1de8/vot/tracker/__init__.py#L250

Maybe the if statement "self._time > self._interval:" should be changed to "self._time > 0:", or is the tolerance for over one frame desired? I did not found any information about that.

Thanks in advance.

[lukacu]

Real-time stuff is very tricky to measure. There are so many things that have to be taken into account. As far as I have tested the configuration it is approximately right, we created some dummy trackers with a fixed sleep interval and see what are the results.

The main focus of the experiment at the moment is to provide some time-related penalties, but we will also consider your remark in the future version of the code.

[lukacu]

If this is still relevant: can you provide an example with a mockup tracker that would demonstrate the problem?

[daniel-d-koenig]

I have no working example, I just detected this by reading and trying to understand the code. To my mind, following code line
https://github.com/votchallenge/vot-toolkit-python/blob/b23463652bfaba2393079b3517c4bc8bae3e1de8/vot/tracker/__init__.py#L250
should be changed to
if self._time > 0:
this leads to a penalization of the tracker if the processing of the frame takes longer than one frame.