Does the parametric model obtained from mmhuman3d have the correct scale?

[caizhongang]

This question is raised by @socketing:

Original post:

我想知道mmhuman3d得到的参数模型是1:1吗，可以把模型分离出来并且利用参数化模型测量到人体的真实高度吗?

Translation:

I would like to know if the parametric model obtained from mmhuman3d has the correct scale for applications such as human height measurement?

[caizhongang]

The parametric models (SMPL or SMPL-X) are in meters, and can be considered to have the correct scale as actual humans. However, currently the codebase only supports 2D methods (image- or video-based), which suffer from ambiguity as a big person standing at a far distance away from the camera may look the same as a small person standing nearer. We will soon support 3D methods (point cloud-based) that will enable better size estimation.