Tracking that doesn't split tracks when there are two gaps of only a few pixels

[clare]

[clare]

It looks like tracking can cope with one small gap but not two like our traps are typically making.

See Cat that is split up and Cat not split up (but other problems)

[maitchison]

Hi Clare,

If it's only a few pixels we can use the 'open' morphology operation to fix this. It joins together any close objects. I used to have this enabled but as far as I remember turned it off due to causing other problems. It might be worth trying again.

If you'd like to implement it, the method get_regions_of_interest in the file "trackextractor.py" has a section "erosion" which is disabled at the moment, you'd just need to change the cv command from erode to open and enable it and see if it helps.

I've often found with tracking that fixing one problem can cause tradeoffs with other clips, so it's important to see how it affects other cases. I have a test mode for the extractor that can help with this. In this case, it'll probably not cause any issues though.

We can also chat with Richard and Brent tomorrow as I'm sure they'll have some good ideas about how this can be done more robustly.

-Matthew.

On Tue, Jul 10, 2018 at 11:02 PM clare [email protected] wrote:

It looks like tracking can cope with one small gap but not two like our traps are typically making.

See Cat that is split up https://drive.google.com/file/d/1EkW-x4Z24-OGiJm3kGGm8I7uN-3Im7Ku/view?usp=sharing and Cat not split up (but other problems) https://drive.google.com/file/d/1nFNMe9FoboC3YBCHjcN3fE3V0bHQBVbx/view?usp=sharing

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[clare]

Opps cat the is split up link is wrong cat split up