About filtering gt with fov

[YueSun0609]

Hi authors,

Thank you for sharing your work, it is very novel and useful. I have a question regarding the following part of your code:

cart_voxels = voxels[radar_mask, :]
filtered_voxels = cart_voxels[cart_voxels[:, 2] >= 6]
filtered_voxels[:, 2] -= 6

Could you please clarify why you only keep voxels with z ≥ 6, and why you subtract 6 from the z coordinates afterwards?

Thank you very much for your time and help!

Best regards,