Why does meshs generated using the same image have different rotations?

[DaLi-Jack]

Wonderful job !!!

I use sample_image_to_3d.ipynb and get .ply file same with sample_text_to_3d.ipynb. When I use the same input image, set the batch_size=4(default setting), it will output 4 meshs. But I find the 4 meshs have different rotations. Please see the pictures below. But I think, because this algorithm use rendering image loss (calculate between rendering image and gt image), so the mesh should have the same correct rotation, because I think rendering image is related to mesh rotation.

1.input image

2.four meshs in the same image

the 1st corgi

the 2nd corgi

the 3rd corgi

the 4th corgi

I would be grateful for any help from you !