Double head issue on bird 3D model training/test

[kuangzijian]

Hi really appreciate your great work,

I tried to train the model with birds dataset, however, the performance on birds is really bad, as you can see there is a "double head" issue:

example 1:
input:

output 3D:

example 2:
input:

output 3D:

Is that due to the bird model having a larger depth value from a horizontal view compare to the human 3D model? or it is just a lack of training data?

Thanks