Implementation of global trajectory metric about wham

[yohanshin]

Hi @zehongs , I am sorry for the delayed response. In the new version of the paper, we will update global metrics with more comprehensive and globally used ones including normalized root-translation error (RTE), foot sliding (FS), and jitter. Following this, we will update the lib/eval/evaluate_emdb.py with those new metrics.

-- I have just updated the evaluation code so that you will be able to obtain new global metric errors. Those are:

1. RTE (root translation error): We compute the Euclidean distance of the global trajectory (i.e., world translation) of GT and prediction after the rigid alignment (rotation and translation). Unlike the previous values, we normalize this with the actual displacement of the subject so that this error is not dependent on the sequence length.

2. Jitter: We compute jitter (10 m / s^3) in the global coordinate. This implies how jittery the motion is in the global coordinate.

3. FS (foot sliding): We compute the averaged displacement of foot vertices during the contact. We obtain the contact label following the previous literature.

We will update the arXiv paper with new metrics accordingly.

[polidox2]

Hi,

Tried the new update, i don't see any improvement in the foot sliding nor in the jitter, was it implemented ?

Thank you!