about the updated version of PyMAF-X

[HongwenZhang]

Congrats to ECON! 🎉🎉

It is just a kind reminder that an updated version of PyMAF-X is now available for better face and hand mesh regression.
i) the updated PyMAF-X uses the same version of SMPL-X (v2020) as PIXIE;
ii) the face and hand inputs of PyMAF-X are simplified (no need to provide local transformation information);
iii) the face regression performance should be on-par with PIXIE, see Fig. 7 and Table 4 of the updated paper;

Please check the updated PyMAF-X for more details :)

[YuliangXiu]

Hi Hongwen

Thanks for letting me know.

Considering the compatibility, I pre-processed the input image with my own implementation (crop parts w/ mediapipe) and used PyMAF-X's ckpt for inference. If I want to integrate the updated version, should I change the pre-processing steps (cropping, transformation), or just need to update the ckpt, from v1.0 to v1.1?

[HongwenZhang]

It should be fine to use your own cropping implementation and simply feed the body/face/hand part images to PyMAF-X. As there are several modifications on the face-specify regression network of the updated PyMAF-X, the ckpt v1.1 is no longer compatible with the original one. It is recommended to replace all configuration and model definition files with their updated version.

Other minor issues:
i) set MODEL.PyMAF.OPT_HEAD = True if the head orientation is preferred to be exactly identical to the face-specify prediction result (see here). If OPT_HEAD is False, the head orientation is the same as the body-specify prediction.
ii) MODEL.PyMAF.HF_BOX_ALIGN is set to False in v1.1 but True in v1.0 by default. This change should help to have slightly better face/hand regression.