Gait problem

New project for OpenCap, which is a new software package to estimate 3D human movement dynamics from smartphone videos. OpenCap strongly relies on OpenSim.
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Taewoong Kong
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Joined: Thu May 16, 2024 4:39 am

Gait problem

Post by Taewoong Kong » Fri Sep 20, 2024 5:53 am

Hello, anyone who has experienced this problem?

At first, as far as I know, I followed best practice guiedlines.(calibration, camera setting, and distance etc.)
The problem is that I've tried to take a normal gait. however, the gait seems like slightly downhill walking. Data also a little diffrent. is this troubleshooting?

I think that it might be affected by ground color or perspective.

I will wait for your help.
Thank you.
Last edited by Taewoong Kong on Sat Sep 21, 2024 6:43 pm, edited 1 time in total.

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Edilson Borba
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Joined: Fri Oct 07, 2022 11:27 am

Re: Gait problem

Post by Edilson Borba » Sat Sep 21, 2024 6:08 am

Hello,

When I've had problems with this it's been because I've positioned the mobiles or the calibrator at degrees other than 90 to the ground.

Another thing I take care of when setting up is to position the calibrator at the height of the mobiles to reduce parallax, but I'm not sure if this is necessary. It has worked for me with these precautions.

I hope you can sort it out. I'd be happy to hear if it worked

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Taewoong Kong
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Joined: Thu May 16, 2024 4:39 am

Re: Gait problem

Post by Taewoong Kong » Sat Sep 21, 2024 4:17 pm

I really appreciate your advice.

I will try again both methods.

which height did you set the phone?
I've set up 1.5m from the ground, which is followed by research.

Thank you.

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Edilson Borba
Posts: 30
Joined: Fri Oct 07, 2022 11:27 am

Re: Gait problem

Post by Edilson Borba » Sun Sep 22, 2024 7:42 am

I use the phone between 1.2 and 1.5 m

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