search

perfanalytics / pose2sim

Markerless kinematics with any cameras — From 2D Pose estimation to 3D OpenSim motion
https://perfanalytics.github.io/pose2sim/
BSD 3-Clause "New" or "Revised" License
242 stars 46 forks source link

[Extrinsic Calibration] Broadcast Error #70

Closed mattorga closed 7 months ago

mattorga commented 7 months ago

Good day!

I have been trying to calibrate my cameras, and the intrinsic calibration works perfectly well after a few custom configurations. However, when I finish identifying the points in the calibration of the extrinsics (scene), I get an error ValueError: operands could not be broadcast together with shapes (8,1,2) (0,). But looking at the errors, I can't trace where the dimensionality error comes from.

Full error:

Screenshot 2024-02-19 at 11 44 06 AM

Calibration configuration:

Screenshot 2024-02-19 at 11 58 03 AM
davidpagnon commented 7 months ago

Hi Matt, The error says it all: you probably did not click any points on the image.

'No points clicked (or fewer than 6). Press 'C' when the image is displayed, and then click on the image points corresponding to the 'object_coords_3d' you measured and wrote down in the Config.toml file.'

You first need to manually measure the 3D coordinates of 10 or more points in the scene (tiles, lines on the wall, boxes, treadmill dimensions, etc). These points should be as spread out as possible. Replace object_coords_3d by these coordinates in Config.toml. Then film the scene, proceed to calibration, and type C to click the points on the image. Just follow the instructions written on the image. Try it first with the Demo to understand how it works.

More information on the Readme: https://github.com/perfanalytics/pose2sim?tab=readme-ov-file#calculate-from-scratch

Keep me updated if you manage to make it work!

davidpagnon commented 7 months ago

Closed as stale. Please feel free to reopen the issue if needed!