Exported point cloud is rotated incorrectly

[daniekpo]

Using save_ply to export my Gaussian model to a point cloud results in a point cloud that seems rotated 180 degrees around the z-axis and some rotations around the x and y axes. I've tried viewing with Meshlab, Blender and Open3D and I always have to manually rotate the point cloud. I need the points to be rotated correctly for my downstream task.

gaussian-splatting/scene/gaussian_model.py

Line 191 in 8a70a8c

def save_ply(self, path):

[AsherJingkongChen]

They use wxyz order instead of xyzw one.