How to recretae the sphere.npy for larger point clouds of size more than 2048 points

[prashkmr]

Hi,

Very impressed to see this work and the results.

I was wondeing whether the sphere.npy strcture can be changed when using point clouds of size more than 2048.

How to recreate the spere.npy for a point cloud of size 5000,3. Eagerly awaiting for your response.

[antao97]

The sphere.npy is created with an algorithm using spherical coordinates.

1. Randomly set a $\theta$ in $0 \sim 2\pi$ and a $\phi$ in $-\pi/2 \sim \pi/2$.
2. Obtain $x$, $y$, and $z$ as

• $x = \sin\phi \cos\theta$
• $y = \sin\phi \sin\theta$
• $z = \cos\phi$

You can put as many points as you like and sample them into the number you desire with farthest point sampling (FPS).

[YazhenHan]

I have a question: The method you provided seems unable to ensure uniformity on the spherical surface. @antao97