mirror of
https://github.com/nerfstudio-project/nerfstudio.git
synced 2026-11-11 02:24:38 +08:00
53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
"""
|
|
Test samplers
|
|
"""
|
|
import torch
|
|
from mattport.nerf.sampler import PDFSampler, UniformSampler
|
|
|
|
from mattport.structures.rays import RayBundle
|
|
|
|
|
|
def test_uniform_sampler():
|
|
"""Test uniform sampler"""
|
|
near_plane = 2
|
|
far_plane = 4
|
|
num_samples = 15
|
|
sampler = UniformSampler(near_plane=near_plane, far_plane=far_plane, num_samples=num_samples)
|
|
|
|
origins = torch.zeros((10, 3))
|
|
directions = torch.ones_like(origins)
|
|
ray_bundle = RayBundle(origins=origins, directions=directions)
|
|
|
|
ray_samples = sampler(ray_bundle)
|
|
|
|
assert ray_samples.positions.shape[-2] == num_samples
|
|
|
|
# TODO Tancik: Add more precise tests
|
|
|
|
|
|
def test_pdf_sampler():
|
|
"""Test pdf sampler"""
|
|
near_plane = 2
|
|
far_plane = 4
|
|
num_samples = 15
|
|
|
|
origins = torch.zeros((10, 3))
|
|
directions = torch.ones_like(origins)
|
|
ray_bundle = RayBundle(origins=origins, directions=directions)
|
|
|
|
uniform_sampler = UniformSampler(near_plane=near_plane, far_plane=far_plane, num_samples=num_samples)
|
|
coarse_ray_samples = uniform_sampler(ray_bundle)
|
|
|
|
weights = torch.ones((10, num_samples))
|
|
|
|
# Just check that it doesn't crash. Need to add some actual tests.
|
|
pdf_sampler = PDFSampler(num_samples)
|
|
pdf_sampler(coarse_ray_samples, weights, num_samples)
|
|
|
|
# TODO Tancik: Add more precise tests
|
|
|
|
|
|
if __name__ == "__main__":
|
|
test_uniform_sampler()
|
|
test_pdf_sampler()
|