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Blob Tracking Performance

PostPosted: Sun Sep 09, 2018 9:21 am
by VJzoo
Hi All :)

I'm working on a project that requires some audio triggering when people walk into areas in a space and its been working ok in 99 but the blob tracking slows down TD a lot (running at 12-13fps) and when I have 3+ blobs it often crashes :/

I looked online and people were talking about changing the mode of the blob track but that seems to have been removed in 99 or is there something I'm missing?

I rebuilt the project in 88 and its running at 60fps without any issues using the "connected component" Method so I might end up using that if the mode cant be changed in 99.

Thank for the help :)

Re: Blob Tracking Performance

PostPosted: Wed Sep 12, 2018 9:46 pm
by swampmonster
the question would be why do you need blob tracking?
drop the input video down to a low res grid of pixels that approx equals the number of areas you have. use video differencing to check if the there is a change.
if there is enough change in a pixel than trigger the corresponding audio.

Re: Blob Tracking Performance

PostPosted: Thu Sep 13, 2018 3:40 am
by VJzoo
Cool thanks for the tip, Ill see if I can work out the difference bit :)

I used blob tracking more because I was able to make it work :P but what you have suggested sounds like a much better solution.