Question for the radiuses r

[bbab]

@staticmethod def compute_ball_radii(distance, radiis, cos): inverse_cos = 1.0 / cos tmp = (inverse_cos * inverse_cos - 1).sqrt() - radiis sample_ball_radii = distance * radiis * cos / (tmp * tmp + 1.0).sqrt() return sample_ball_radii

What is the meaning of the cos? Sound like the calculation is different from the paper. Thanks

[Hu Wenbo]

The cos means the cosine value of the angle between the ray and the principal axis of the camera. Please refer to https://github.com/wbhu/Tri-MipRF/blob/main/dataset/utils/cameras.py#L86