Search found 184 matches

by Matt Petrucci
Thu Nov 21, 2024 3:57 pm
Forum: OpenCap
Topic: Issue with recording from 4 cameras and visualization of level walking
Replies: 2
Views: 148

Re: Issue with recording from 4 cameras and visualization of level walking

Hi Pieter,

The error on the phone occurs when a phone has lost or has spotty WiFi connection. Typically, reconnecting the phone will clear up the issue.

Hope this helps,
Matt
by Matt Petrucci
Mon Nov 18, 2024 10:18 am
Forum: OpenCap
Topic: 30 appears consecutively in the data
Replies: 1
Views: 89

Re: 30 appears consecutively in the data

Hi Hyunji,

To clarify, are you seeing a coordinate value in the .mot file that is consistently 30? If so which one?

Matt
by Matt Petrucci
Mon Nov 18, 2024 10:11 am
Forum: OpenCap
Topic: Zoom in or out function of iPhones
Replies: 1
Views: 57

Re: Zoom in or out function of iPhones

Hi Shane,

Auto focus and zoom are fixed for each camera within the app. Zooming in would change the camera intrinsics.

Hope this helps,
Matt
by Matt Petrucci
Mon Nov 18, 2024 10:08 am
Forum: OpenCap
Topic: Ground reaction force
Replies: 1
Views: 84

Re: Ground reaction force

Hello,

It is necessary to run a dynamic simulation that uses the kinematics and a ground contact model to estimate ground reaction forces.

https://github.com/stanfordnmbl/opencap ... inetics.py

Hope this helps,
Matt
by Matt Petrucci
Mon Nov 18, 2024 10:06 am
Forum: OpenCap
Topic: Discussions on Overground Analysis
Replies: 5
Views: 178

Re: Discussions on Overground Analysis

You can analyze data you have already collected. You just need replace these example session ID and trial names to yours: https://github.com/stanfordnmbl/opencap ... sis.py#L43
by Matt Petrucci
Fri Nov 15, 2024 2:05 pm
Forum: OpenCap
Topic: labValidationVideosToKinematics.py cannot produce paper's result
Replies: 1
Views: 111

Re: labValidationVideosToKinematics.py cannot produce paper's result

Hi Jonathan,

You will want to use the file structure as noted here and the comment above. So you'll change that datadir to one of the two folders you have.

Hope this helps,
Matt
by Matt Petrucci
Fri Nov 15, 2024 1:50 pm
Forum: OpenCap
Topic: Discussions on Overground Analysis
Replies: 5
Views: 178

Re: Discussions on Overground Analysis

Hello,

You will need to setup a python environment as outlined in the ReadMe here. Then you can make the necessary changes the code and run it within the python environment. If you are used to MATLAB, step 6 suggest installing Spyder which is pretty similar.

Hope this helps,
Matt
by Matt Petrucci
Fri Nov 15, 2024 1:45 pm
Forum: OpenCap
Topic: Calibration Square Incorrectly placed
Replies: 1
Views: 66

Re: Calibration Square Incorrectly placed

Hi Leah,

Yes, you can use this python code. In this case since you needed to update the calibration as well, so I went ahead and reprocessed the session. You can see the results in the web app.

Hope this helps,
Matt
by Matt Petrucci
Fri Nov 15, 2024 1:40 pm
Forum: OpenCap
Topic: Issue with recording from 4 cameras and visualization of level walking
Replies: 2
Views: 148

Re: Issue with recording from 4 cameras and visualization of level walking

Hi Pieter,

Do your other trials in the same session including walking trials? This can happen if the checkboard is tilted during calibration.

Thank you for sharing the error. Would it be possible to share the session ID so we can diagnose?

Thanks,
Matt
by Matt Petrucci
Thu Nov 14, 2024 1:03 pm
Forum: OpenCap
Topic: Discussions on Overground Analysis
Replies: 5
Views: 178

Re: Discussions on Overground Analysis

Hello, The default for the analysis in the webapp is to select the last stride for analysis. You can run the analysis locally using this code and change this variable: https://github.com/stanfordnmbl/opencap-processing/blob/c12c10f4ccf23a484b31ad9c5bb33206cbea3e9b/Examples/example_gait_analysis.py#L...