cv::Tracker roi size

tracker

asked 2016-01-18 05:59:41 -0600

foundry
21 ●1 ●2 ●5

i am trying out cv::Tracker using tutorial_introduction_to_tracker.cpp, and comparing the prepackaged algorithns (MIL, BOOSTING, MEDIANFLOW, TLD, KCF).

In all but TLD, the size of the ROI bounding box remains fixed for the duration of the video, whilst the postiion varies to more-or-less correctly track the selected object.

I would expect the size to vary during a successful track as the tracked object depth postion varies.

Is this expected behaviour? Or does it indicate that the tracker has not correctly identified the tracked object?

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answered 2016-01-18 14:04:02 -0600

Tetragramm

7376 ●13 ●37

Almost all of the trackers do not have a scale component. So they track as best they can, but do not change size. I know KCF is that way, and I would assume that the others you name are too, though I haven't looked in as much detail at those.