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Commit 6294701e authored by Nianchen Deng's avatar Nianchen Deng
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nerf/logs/gas_nerf_2021.01.17/config.txt deleted 100644 → 0
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expname = gas_nerf_2021.01.17
basedir = ./logs
datadir = ./data/gas_nerf_2021.01.17
dataset_type = llff
factor = 1
llffhold = 8
N_rand = 1024
N_samples = 16
N_importance = 0
netdepth = 4
netwidth = 128
use_viewdirs = True
raw_noise_std = 1e0
nerf/logs/lobby_nerf_2021.01.20/args.txt deleted 100644 → 0
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N_importance = 0
N_rand = 1024
N_samples = 16
basedir = ./logs
chunk = 32768
config = config_lobby.txt
datadir = ./data/lobby_nerf_2021.01.20
dataset_type = llff
demo_path = demo_poses.npy
expname = lobby_nerf_2021.01.20
factor = 1
ft_path = None
half_res = False
i_embed = 0
i_img = 500
i_print = 100
i_testset = 50000
i_video = 50000
i_weights = 10000
lindisp = False
llffhold = 8
lrate = 0.0005
lrate_decay = 250
multires = 10
multires_views = 4
netchunk = 65536
netdepth = 4
netdepth_fine = 8
netwidth = 128
netwidth_fine = 256
no_batching = False
no_ndc = False
no_reload = False
perturb = 1.0
precrop_frac = 0.5
precrop_iters = 0
random_seed = None
raw_noise_std = 1.0
render_demo = True
render_factor = 0
render_only = False
render_test = False
shape = greek
spherify = False
testskip = 8
use_viewdirs = True
white_bkgd = False
nerf/logs/lobby_nerf_2021.01.20/config.txt deleted 100644 → 0
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expname = lobby_nerf_2021.01.20
basedir = ./logs
datadir = ./data/lobby_nerf_2021.01.20
dataset_type = llff
factor = 1
llffhold = 8
N_rand = 1024
N_samples = 16
N_importance = 0
netdepth = 4
netwidth = 128
use_viewdirs = True
raw_noise_std = 1e0
nerf/logs/mc_nerf_2021.01.17/args.txt deleted 100644 → 0
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N_importance = 0
N_rand = 1024
N_samples = 16
basedir = ./logs
chunk = 32768
config = config_mc_0117.txt
datadir = ./data/mc_nerf_2021.01.17
dataset_type = llff
demo_path = demo_poses.npy
expname = mc_nerf_2021.01.17
factor = 1
ft_path = None
half_res = False
i_embed = 0
i_img = 500
i_print = 100
i_testset = 50000
i_video = 50000
i_weights = 10000
lindisp = False
llffhold = 8
lrate = 0.0005
lrate_decay = 250
multires = 10
multires_views = 4
netchunk = 65536
netdepth = 4
netdepth_fine = 8
netwidth = 128
netwidth_fine = 256
no_batching = False
no_ndc = False
no_reload = False
perturb = 1.0
precrop_frac = 0.5
precrop_iters = 0
random_seed = None
raw_noise_std = 1.0
render_demo = True
render_factor = 0
render_only = False
render_test = False
shape = greek
spherify = False
testskip = 8
use_viewdirs = True
white_bkgd = False
nerf/logs/mc_nerf_2021.01.17/config.txt deleted 100644 → 0
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expname = mc_nerf_2021.01.17
basedir = ./logs
datadir = ./data/mc_nerf_2021.01.17
dataset_type = llff
factor = 1
llffhold = 8
N_rand = 1024
N_samples = 16
N_importance = 0
netdepth = 4
netwidth = 128
use_viewdirs = True
raw_noise_std = 1e0
nerf/nerf-bar0514-ndc-test2.sh deleted 100644 → 0
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#!/bin/bash
#SBATCH --job-name=bar0514Test
#SBATCH --nodes=1
#SBATCH --cpus-per-task=1
#SBATCH --mem=128GB
#SBATCH --time=23:00:00
#SBATCH --gres=gpu:1
module purge
source /scratch/zh719/anaconda3/etc/profile.d/conda.sh
export PATH=/scratch/zh719/anaconda3/bin:$PATH
conda activate nerf
cd /scratch/zh719/nerf
python run_nerf.py --config config_bar0514.txt --NDC True --render_only --render_test
nerf/pythonCommand.txt deleted 100644 → 0
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python run_nerf.py --config config_gas.txt --render_demo
## change config file as you want
\ No newline at end of file
nerf/run_nerf.py deleted 100644 → 0
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import os
os.environ['TF_FORCE_GPU_ALLOW_GROWTH'] = 'true'
import sys
import tensorflow as tf
import numpy as np
import imageio
import json
import random
import time
from run_nerf_helpers import *
from load_llff import load_llff_data
from load_llff import load_demo_llff_data
from load_deepvoxels import load_dv_data
from load_blender import load_blender_data
tf.compat.v1.enable_eager_execution()
def batchify(fn, chunk):
"""Constructs a version of 'fn' that applies to smaller batches."""
if chunk is None:
return fn
def ret(inputs):
return tf.concat([fn(inputs[i:i+chunk]) for i in range(0, inputs.shape[0], chunk)], 0)
return ret
def run_network(inputs, viewdirs, fn, embed_fn, embeddirs_fn, netchunk=1024*64):
"""Prepares inputs and applies network 'fn'."""
inputs_flat = tf.reshape(inputs, [-1, inputs.shape[-1]])
embedded = embed_fn(inputs_flat)
if viewdirs is not None:
input_dirs = tf.broadcast_to(viewdirs[:, None], inputs.shape)
input_dirs_flat = tf.reshape(input_dirs, [-1, input_dirs.shape[-1]])
embedded_dirs = embeddirs_fn(input_dirs_flat)
embedded = tf.concat([embedded, embedded_dirs], -1)
outputs_flat = batchify(fn, netchunk)(embedded)
outputs = tf.reshape(outputs_flat, list(
inputs.shape[:-1]) + [outputs_flat.shape[-1]])
return outputs
def render_rays(ray_batch,
network_fn,
network_query_fn,
N_samples,
retraw=False,
lindisp=False,
perturb=0.,
N_importance=0,
network_fine=None,
white_bkgd=False,
raw_noise_std=0.,
verbose=False):
"""Volumetric rendering.
Args:
ray_batch: array of shape [batch_size, ...]. All information necessary
for sampling along a ray, including: ray origin, ray direction, min
dist, max dist, and unit-magnitude viewing direction.
network_fn: function. Model for predicting RGB and density at each point
in space.
network_query_fn: function used for passing queries to network_fn.
N_samples: int. Number of different times to sample along each ray.
retraw: bool. If True, include model's raw, unprocessed predictions.
lindisp: bool. If True, sample linearly in inverse depth rather than in depth.
perturb: float, 0 or 1. If non-zero, each ray is sampled at stratified
random points in time.
N_importance: int. Number of additional times to sample along each ray.
These samples are only passed to network_fine.
network_fine: "fine" network with same spec as network_fn.
white_bkgd: bool. If True, assume a white background.
raw_noise_std: ...
verbose: bool. If True, print more debugging info.
Returns:
rgb_map: [num_rays, 3]. Estimated RGB color of a ray. Comes from fine model.
disp_map: [num_rays]. Disparity map. 1 / depth.
acc_map: [num_rays]. Accumulated opacity along each ray. Comes from fine model.
raw: [num_rays, num_samples, 4]. Raw predictions from model.
rgb0: See rgb_map. Output for coarse model.
disp0: See disp_map. Output for coarse model.
acc0: See acc_map. Output for coarse model.
z_std: [num_rays]. Standard deviation of distances along ray for each
sample.
"""
def raw2outputs(raw, z_vals, rays_d):
"""Transforms model's predictions to semantically meaningful values.
Args:
raw: [num_rays, num_samples along ray, 4]. Prediction from model.
z_vals: [num_rays, num_samples along ray]. Integration time.
rays_d: [num_rays, 3]. Direction of each ray.
Returns:
rgb_map: [num_rays, 3]. Estimated RGB color of a ray.
disp_map: [num_rays]. Disparity map. Inverse of depth map.
acc_map: [num_rays]. Sum of weights along each ray.
weights: [num_rays, num_samples]. Weights assigned to each sampled color.
depth_map: [num_rays]. Estimated distance to object.
"""
# Function for computing density from model prediction. This value is
# strictly between [0, 1].
def raw2alpha(raw, dists, act_fn=tf.nn.relu): return 1.0 - \
tf.exp(-act_fn(raw) * dists)
# Compute 'distance' (in time) between each integration time along a ray.
dists = z_vals[..., 1:] - z_vals[..., :-1]
# The 'distance' from the last integration time is infinity.
dists = tf.concat(
[dists, tf.broadcast_to([1e10], dists[..., :1].shape)],
axis=-1) # [N_rays, N_samples]
# Multiply each distance by the norm of its corresponding direction ray
# to convert to real world distance (accounts for non-unit directions).
dists = dists * tf.linalg.norm(rays_d[..., None, :], axis=-1)
# Extract RGB of each sample position along each ray.
rgb = tf.math.sigmoid(raw[..., :3]) # [N_rays, N_samples, 3]
# Add noise to model's predictions for density. Can be used to
# regularize network during training (prevents floater artifacts).
noise = 0.
if raw_noise_std > 0.:
noise = tf.random.normal(raw[..., 3].shape) * raw_noise_std
# Predict density of each sample along each ray. Higher values imply
# higher likelihood of being absorbed at this point.
alpha = raw2alpha(raw[..., 3] + noise, dists) # [N_rays, N_samples]
# Compute weight for RGB of each sample along each ray. A cumprod() is
# used to express the idea of the ray not having reflected up to this
# sample yet.
# [N_rays, N_samples]
weights = alpha * \
tf.math.cumprod(1.-alpha + 1e-10, axis=-1, exclusive=True)
try:
tf.debugging.check_numerics(alpha, 'alpha')
except Exception as err:
print('alpha check failed')
try:
tf.debugging.check_numerics(dists, 'dists')
except Exception as err:
print('dists check failed')
try:
tf.debugging.check_numerics(tf.linalg.norm(rays_d[..., None, :], axis=-1), 'rays_d norm')
except Exception as err:
print('rays_d norm check failed')
print(rays_d.eval())
# Computed weighted color of each sample along each ray.
rgb_map = tf.reduce_sum(
weights[..., None] * rgb, axis=-2) # [N_rays, 3]
# Estimated depth map is expected distance.
depth_map = tf.reduce_sum(weights * z_vals, axis=-1)
# Disparity map is inverse depth.
disp_map = 1./tf.maximum(1e-10, depth_map /
tf.reduce_sum(weights, axis=-1))
# Sum of weights along each ray. This value is in [0, 1] up to numerical error.
acc_map = tf.reduce_sum(weights, -1)
# To composite onto a white background, use the accumulated alpha map.
if white_bkgd:
rgb_map = rgb_map + (1.-acc_map[..., None])
return rgb_map, disp_map, acc_map, weights, depth_map
###############################
# batch size
N_rays = ray_batch.shape[0]
# Extract ray origin, direction.
rays_o, rays_d = ray_batch[:, 0:3], ray_batch[:, 3:6] # [N_rays, 3] each
# Extract unit-normalized viewing direction.
viewdirs = ray_batch[:, -3:] if ray_batch.shape[-1] > 8 else None
# Extract lower, upper bound for ray distance.
bounds = tf.reshape(ray_batch[..., 6:8], [-1, 1, 2])
near, far = bounds[..., 0], bounds[..., 1] # [-1,1]
# Decide where to sample along each ray. Under the logic, all rays will be sampled at
# the same times.
t_vals = tf.linspace(0., 1., N_samples)
if not lindisp:
# Space integration times linearly between 'near' and 'far'. Same
# integration points will be used for all rays.
z_vals = near * (1.-t_vals) + far * (t_vals)
else:
# Sample linearly in inverse depth (disparity).
z_vals = 1./(1./near * (1.-t_vals) + 1./far * (t_vals))
z_vals = tf.broadcast_to(z_vals, [N_rays, N_samples])
# Perturb sampling time along each ray.
if perturb > 0.:
# get intervals between samples
mids = .5 * (z_vals[..., 1:] + z_vals[..., :-1])
upper = tf.concat([mids, z_vals[..., -1:]], -1)
lower = tf.concat([z_vals[..., :1], mids], -1)
# stratified samples in those intervals
t_rand = tf.random.uniform(z_vals.shape)
z_vals = lower + (upper - lower) * t_rand
# Points in space to evaluate model at.
pts = rays_o[..., None, :] + rays_d[..., None, :] * \
z_vals[..., :, None] # [N_rays, N_samples, 3]
# Evaluate model at each point.
raw = network_query_fn(pts, viewdirs, network_fn) # [N_rays, N_samples, 4]
rgb_map, disp_map, acc_map, weights, depth_map = raw2outputs(
raw, z_vals, rays_d)
if N_importance > 0:
rgb_map_0, disp_map_0, acc_map_0 = rgb_map, disp_map, acc_map
# Obtain additional integration times to evaluate based on the weights
# assigned to colors in the coarse model.
z_vals_mid = .5 * (z_vals[..., 1:] + z_vals[..., :-1])
z_samples = sample_pdf(
z_vals_mid, weights[..., 1:-1], N_importance, det=(perturb == 0.))
z_samples = tf.stop_gradient(z_samples)
# Obtain all points to evaluate color, density at.
z_vals = tf.sort(tf.concat([z_vals, z_samples], -1), -1)
pts = rays_o[..., None, :] + rays_d[..., None, :] * \
z_vals[..., :, None] # [N_rays, N_samples + N_importance, 3]
# Make predictions with network_fine.
run_fn = network_fn if network_fine is None else network_fine
raw = network_query_fn(pts, viewdirs, run_fn)
rgb_map, disp_map, acc_map, weights, depth_map = raw2outputs(
raw, z_vals, rays_d)
ret = {'rgb_map': rgb_map, 'disp_map': disp_map, 'acc_map': acc_map}
if retraw:
ret['raw'] = raw
if N_importance > 0:
ret['rgb0'] = rgb_map_0
ret['disp0'] = disp_map_0
ret['acc0'] = acc_map_0
ret['z_std'] = tf.math.reduce_std(z_samples, -1) # [N_rays]
for k in ret:
tf.debugging.check_numerics(ret[k], 'output {}'.format(k))
return ret
def batchify_rays(rays_flat, chunk=1024*32, **kwargs):
"""Render rays in smaller minibatches to avoid OOM."""
all_ret = {}
for i in range(0, rays_flat.shape[0], chunk):
ret = render_rays(rays_flat[i:i+chunk], **kwargs)
for k in ret:
if k not in all_ret:
all_ret[k] = []
all_ret[k].append(ret[k])
all_ret = {k: tf.concat(all_ret[k], 0) for k in all_ret}
return all_ret
def render(H, W, focal,
chunk=1024*32, rays=None, c2w=None, ndc=True,
near=0., far=1.,
use_viewdirs=False, c2w_staticcam=None,
**kwargs):
"""Render rays
Args:
H: int. Height of image in pixels.
W: int. Width of image in pixels.
focal: float. Focal length of pinhole camera.
chunk: int. Maximum number of rays to process simultaneously. Used to
control maximum memory usage. Does not affect final results.
rays: array of shape [2, batch_size, 3]. Ray origin and direction for
each example in batch.
c2w: array of shape [3, 4]. Camera-to-world transformation matrix.
ndc: bool. If True, represent ray origin, direction in NDC coordinates.
near: float or array of shape [batch_size]. Nearest distance for a ray.
far: float or array of shape [batch_size]. Farthest distance for a ray.
use_viewdirs: bool. If True, use viewing direction of a point in space in model.
c2w_staticcam: array of shape [3, 4]. If not None, use this transformation matrix for
camera while using other c2w argument for viewing directions.
Returns:
rgb_map: [batch_size, 3]. Predicted RGB values for rays.
disp_map: [batch_size]. Disparity map. Inverse of depth.
acc_map: [batch_size]. Accumulated opacity (alpha) along a ray.
extras: dict with everything returned by render_rays().
"""
if c2w is not None:
# special case to render full image
rays_o, rays_d = get_rays(H, W, focal, c2w)
else:
# use provided ray batch
rays_o, rays_d = rays
if use_viewdirs:
# provide ray directions as input
viewdirs = rays_d
if c2w_staticcam is not None:
# special case to visualize effect of viewdirs
rays_o, rays_d = get_rays(H, W, focal, c2w_staticcam)
# Make all directions unit magnitude.
# shape: [batch_size, 3]
viewdirs = viewdirs / tf.linalg.norm(viewdirs, axis=-1, keepdims=True)
viewdirs = tf.cast(tf.reshape(viewdirs, [-1, 3]), dtype=tf.float32)
sh = rays_d.shape # [..., 3]
if ndc:
# for forward facing scenes
rays_o, rays_d = ndc_rays(
H, W, focal, tf.cast(1., tf.float32), rays_o, rays_d)
# Create ray batch
rays_o = tf.cast(tf.reshape(rays_o, [-1, 3]), dtype=tf.float32)
rays_d = tf.cast(tf.reshape(rays_d, [-1, 3]), dtype=tf.float32)
near, far = near * \
tf.ones_like(rays_d[..., :1]), far * tf.ones_like(rays_d[..., :1])
# (ray origin, ray direction, min dist, max dist) for each ray
rays = tf.concat([rays_o, rays_d, near, far], axis=-1)
if use_viewdirs:
# (ray origin, ray direction, min dist, max dist, normalized viewing direction)
rays = tf.concat([rays, viewdirs], axis=-1)
# Render and reshape
all_ret = batchify_rays(rays, chunk, **kwargs)
for k in all_ret:
k_sh = list(sh[:-1]) + list(all_ret[k].shape[1:])
all_ret[k] = tf.reshape(all_ret[k], k_sh)
k_extract = ['rgb_map', 'disp_map', 'acc_map']
ret_list = [all_ret[k] for k in k_extract]
ret_dict = {k: all_ret[k] for k in all_ret if k not in k_extract}
return ret_list + [ret_dict]
def render_path(render_poses, hwf, chunk, render_kwargs, gt_imgs=None, savedir=None, render_factor=0):
H, W, focal = hwf
if render_factor != 0:
# Render downsampled for speed
H = H//render_factor
W = W//render_factor
focal = focal/render_factor
rgbs = []
disps = []
t = time.time()
for i, c2w in enumerate(render_poses):
print(i, time.time() - t)
t = time.time()
rgb, disp, acc, _ = render(
H, W, focal, chunk=chunk, c2w=c2w[:3, :4], **render_kwargs)
rgbs.append(rgb.numpy())
disps.append(disp.numpy())
if i == 0:
print(rgb.shape, disp.shape)
if gt_imgs is not None and render_factor == 0:
p = -10. * np.log10(np.mean(np.square(rgb - gt_imgs[i])))
print(p)
if savedir is not None:
rgb8 = to8b(rgbs[-1])
filename = os.path.join(savedir, '{:03d}.png'.format(i))
imageio.imwrite(filename, rgb8)
rgbs = np.stack(rgbs, 0)
disps = np.stack(disps, 0)
return rgbs, disps
def create_nerf(args):
"""Instantiate NeRF's MLP model."""
embed_fn, input_ch = get_embedder(args.multires, args.i_embed)
input_ch_views = 0
embeddirs_fn = None
if args.use_viewdirs:
embeddirs_fn, input_ch_views = get_embedder(
args.multires_views, args.i_embed)
output_ch = 4
skips = [4]
model = init_nerf_model(
D=args.netdepth, W=args.netwidth,
input_ch=input_ch, output_ch=output_ch, skips=skips,
input_ch_views=input_ch_views, use_viewdirs=args.use_viewdirs)
grad_vars = model.trainable_variables
models = {'model': model}
model_fine = None
if args.N_importance > 0:
model_fine = init_nerf_model(
D=args.netdepth_fine, W=args.netwidth_fine,
input_ch=input_ch, output_ch=output_ch, skips=skips,
input_ch_views=input_ch_views, use_viewdirs=args.use_viewdirs)
grad_vars += model_fine.trainable_variables
models['model_fine'] = model_fine
def network_query_fn(inputs, viewdirs, network_fn): return run_network(
inputs, viewdirs, network_fn,
embed_fn=embed_fn,
embeddirs_fn=embeddirs_fn,
netchunk=args.netchunk)
render_kwargs_train = {
'network_query_fn': network_query_fn,
'perturb': args.perturb,
'N_importance': args.N_importance,
'network_fine': model_fine,
'N_samples': args.N_samples,
'network_fn': model,
'use_viewdirs': args.use_viewdirs,
'white_bkgd': args.white_bkgd,
'raw_noise_std': args.raw_noise_std,
}
# NDC only good for LLFF-style forward facing data
if args.dataset_type != 'llff' or args.no_ndc:
print('Not ndc!')
render_kwargs_train['ndc'] = False
render_kwargs_train['lindisp'] = args.lindisp
render_kwargs_test = {
k: render_kwargs_train[k] for k in render_kwargs_train}
render_kwargs_test['perturb'] = False
render_kwargs_test['raw_noise_std'] = 0.
start = 0
basedir = args.basedir
expname = args.expname
if args.ft_path is not None and args.ft_path != 'None':
ckpts = [args.ft_path]
else:
ckpts = [os.path.join(basedir, expname, f) for f in sorted(os.listdir(os.path.join(basedir, expname))) if
('model_' in f and 'fine' not in f and 'optimizer' not in f)]
print('Found ckpts', ckpts)
if len(ckpts) > 0 and not args.no_reload:
ft_weights = ckpts[-1]
print('Reloading from', ft_weights)
model.set_weights(np.load(ft_weights, allow_pickle=True))
start = int(ft_weights[-10:-4]) + 1
print('Resetting step to', start)
if model_fine is not None:
ft_weights_fine = '{}_fine_{}'.format(
ft_weights[:-11], ft_weights[-10:])
print('Reloading fine from', ft_weights_fine)
model_fine.set_weights(np.load(ft_weights_fine, allow_pickle=True))
return render_kwargs_train, render_kwargs_test, start, grad_vars, models
def config_parser():
import configargparse
parser = configargparse.ArgumentParser()
parser.add_argument('--config', is_config_file=True,
help='config file path')
parser.add_argument("--expname", type=str, help='experiment name')
parser.add_argument("--basedir", type=str, default='./logs/',
help='where to store ckpts and logs')
parser.add_argument("--datadir", type=str,
default='./data/llff/fern', help='input data directory')
# training options
parser.add_argument("--netdepth", type=int, default=8,
help='layers in network')
parser.add_argument("--netwidth", type=int, default=256,
help='channels per layer')
parser.add_argument("--netdepth_fine", type=int,
default=8, help='layers in fine network')
parser.add_argument("--netwidth_fine", type=int, default=256,
help='channels per layer in fine network')
parser.add_argument("--N_rand", type=int, default=32*32*4,
help='batch size (number of random rays per gradient step)')
parser.add_argument("--lrate", type=float,
default=5e-4, help='learning rate')
parser.add_argument("--lrate_decay", type=int, default=250,
help='exponential learning rate decay (in 1000s)')
parser.add_argument("--chunk", type=int, default=1024*32,
help='number of rays processed in parallel, decrease if running out of memory')
parser.add_argument("--netchunk", type=int, default=1024*64,
help='number of pts sent through network in parallel, decrease if running out of memory')
parser.add_argument("--no_batching", action='store_true',
help='only take random rays from 1 image at a time')
parser.add_argument("--no_reload", action='store_true',
help='do not reload weights from saved ckpt')
parser.add_argument("--ft_path", type=str, default=None,
help='specific weights npy file to reload for coarse network')
parser.add_argument("--random_seed", type=int, default=None,
help='fix random seed for repeatability')
# pre-crop options
parser.add_argument("--precrop_iters", type=int, default=0,
help='number of steps to train on central crops')
parser.add_argument("--precrop_frac", type=float,
default=.5, help='fraction of img taken for central crops')
# rendering options
parser.add_argument("--N_samples", type=int, default=64,
help='number of coarse samples per ray')
parser.add_argument("--N_importance", type=int, default=0,
help='number of additional fine samples per ray')
parser.add_argument("--perturb", type=float, default=1.,
help='set to 0. for no jitter, 1. for jitter')
parser.add_argument("--use_viewdirs", action='store_true',
help='use full 5D input instead of 3D')
parser.add_argument("--i_embed", type=int, default=0,
help='set 0 for default positional encoding, -1 for none')
parser.add_argument("--multires", type=int, default=10,
help='log2 of max freq for positional encoding (3D location)')
parser.add_argument("--multires_views", type=int, default=4,
help='log2 of max freq for positional encoding (2D direction)')
parser.add_argument("--raw_noise_std", type=float, default=0.,
help='std dev of noise added to regularize sigma_a output, 1e0 recommended')
parser.add_argument("--render_only", action='store_true',
help='do not optimize, reload weights and render out render_poses path')
parser.add_argument("--render_demo", action='store_true',
help='[demo] reload weights and render out render_poses path')
parser.add_argument("--demo_path", type=str, default="demo_poses.npy",
help='specific demo path file')
parser.add_argument("--render_test", action='store_true',
help='render the test set instead of render_poses path')
parser.add_argument("--render_factor", type=int, default=0,
help='downsampling factor to speed up rendering, set 4 or 8 for fast preview')
# dataset options
parser.add_argument("--dataset_type", type=str, default='llff',
help='options: llff / blender / deepvoxels')
parser.add_argument("--testskip", type=int, default=8,
help='will load 1/N images from test/val sets, useful for large datasets like deepvoxels')
# deepvoxels flags
parser.add_argument("--shape", type=str, default='greek',
help='options : armchair / cube / greek / vase')
# blender flags
parser.add_argument("--white_bkgd", action='store_true',
help='set to render synthetic data on a white bkgd (always use for dvoxels)')
parser.add_argument("--half_res", action='store_true',
help='load blender synthetic data at 400x400 instead of 800x800')
# llff flags
parser.add_argument("--factor", type=int, default=8,
help='downsample factor for LLFF images')
parser.add_argument("--no_ndc", action='store_true',
help='do not use normalized device coordinates (set for non-forward facing scenes)')
parser.add_argument("--lindisp", action='store_true',
help='sampling linearly in disparity rather than depth')
parser.add_argument("--spherify", action='store_true',
help='set for spherical 360 scenes')
parser.add_argument("--llffhold", type=int, default=8,
help='will take every 1/N images as LLFF test set, paper uses 8')
# logging/saving options
parser.add_argument("--i_print", type=int, default=100,
help='frequency of console printout and metric loggin')
parser.add_argument("--i_img", type=int, default=500,
help='frequency of tensorboard image logging')
parser.add_argument("--i_weights", type=int, default=10000,
help='frequency of weight ckpt saving')
parser.add_argument("--i_testset", type=int, default=50000,
help='frequency of testset saving')
parser.add_argument("--i_video", type=int, default=50000,
help='frequency of render_poses video saving')
return parser
def train():
parser = config_parser()
args = parser.parse_args()
if args.random_seed is not None:
print('Fixing random seed', args.random_seed)
np.random.seed(args.random_seed)
tf.compat.v1.set_random_seed(args.random_seed)
# Load data
if args.dataset_type == 'llff':
if args.render_demo:
render_poses, bds = load_demo_llff_data(args.datadir, args.demo_path, args.factor)
i_test = np.arange(render_poses.shape[0])
hwf = render_poses[0, :3, -1]
near = 0.
far = 1.
else:
print("args.factor", args.factor)
images, poses, bds, render_poses, i_test = load_llff_data(args.datadir, args.factor,
recenter=True, bd_factor=.75,
spherify=args.spherify, test_index=args.llffhold)
hwf = poses[0, :3, -1]
poses = poses[:, :3, :4]
print('Loaded llff', images.shape,
render_poses.shape, hwf, args.datadir)
if not isinstance(i_test, list):
i_test = [i_test]
if args.llffhold > 0:
print('Auto LLFF holdout,', args.llffhold)
# i_test = np.arange(images.shape[0])[::args.llffhold]
i_test = np.arange(images.shape[0])[0:int(images.shape[0] / args.llffhold):]
i_test = np.arange(images.shape[0])[0:20:]
i_val = i_test
i_train = np.array([i for i in np.arange(int(images.shape[0])) if
(i not in i_test and i not in i_val)])
print('DEFINING BOUNDS')
if args.no_ndc:
near = tf.reduce_min(bds) * .9
far = tf.reduce_max(bds) * 1.
else:
near = 0.
far = 1.
print('NEAR FAR', near, far)
elif args.dataset_type == 'blender':
images, poses, render_poses, hwf, i_split = load_blender_data(
args.datadir, args.half_res, args.testskip)
print('Loaded blender', images.shape,
render_poses.shape, hwf, args.datadir)
i_train, i_val, i_test = i_split
near = 2.
far = 6.
if args.white_bkgd:
images = images[..., :3]*images[..., -1:] + (1.-images[..., -1:])
else:
images = images[..., :3]
elif args.dataset_type == 'deepvoxels':
images, poses, render_poses, hwf, i_split = load_dv_data(scene=args.shape,
basedir=args.datadir,
testskip=args.testskip)
print('Loaded deepvoxels', images.shape,
render_poses.shape, hwf, args.datadir)
i_train, i_val, i_test = i_split
hemi_R = np.mean(np.linalg.norm(poses[:, :3, -1], axis=-1))
near = hemi_R-1.
far = hemi_R+1.
else:
print('Unknown dataset type', args.dataset_type, 'exiting')
return
# Cast intrinsics to right types
H, W, focal = hwf
H, W = int(H), int(W)
hwf = [H, W, focal]
if args.render_test:
render_poses = np.array(poses[i_test])
# Create log dir and copy the config file
basedir = args.basedir
expname = args.expname
os.makedirs(os.path.join(basedir, expname), exist_ok=True)
f = os.path.join(basedir, expname, 'args.txt')
with open(f, 'w') as file:
for arg in sorted(vars(args)):
attr = getattr(args, arg)
file.write('{} = {}\n'.format(arg, attr))
if args.config is not None:
f = os.path.join(basedir, expname, 'config.txt')
with open(f, 'w') as file:
file.write(open(args.config, 'r').read())
# Create nerf model
render_kwargs_train, render_kwargs_test, start, grad_vars, models = create_nerf(
args)
bds_dict = {
'near': tf.cast(near, tf.float32),
'far': tf.cast(far, tf.float32),
}
render_kwargs_train.update(bds_dict)
render_kwargs_test.update(bds_dict)
# Short circuit if only rendering out from trained model
if args.render_only:
print('RENDER ONLY')
if args.render_test:
# render_test switches to test poses
images = images[i_test]
else:
# Default is smoother render_poses path
images = None
testsavedir = os.path.join(basedir, expname, 'renderonly_{}_{:06d}'.format(
'test' if args.render_test else 'path', start))
os.makedirs(testsavedir, exist_ok=True)
print('test poses shape', render_poses.shape)
rgbs, _ = render_path(render_poses, hwf, args.chunk, render_kwargs_test,
gt_imgs=images, savedir=testsavedir, render_factor=args.render_factor)
print('Done rendering', testsavedir)
imageio.mimwrite(os.path.join(testsavedir, 'video.mp4'),
to8b(rgbs), fps=30, quality=8)
return
if args.render_demo:
print('DEMO ONLY')
testsavedir = os.path.join(basedir, expname, 'demoonly_{:06d}'.format(start))
os.makedirs(testsavedir, exist_ok=True)
print('test demo shape', render_poses.shape)
rgbs, _ = render_path(render_poses, hwf, args.chunk, render_kwargs_test,
savedir=testsavedir, render_factor=args.render_factor)
print('Done rendering', testsavedir)
imageio.mimwrite(os.path.join(testsavedir, 'video.mp4'),
to8b(rgbs), fps=30, quality=8)
return
# Create optimizer
lrate = args.lrate
if args.lrate_decay > 0:
lrate = tf.keras.optimizers.schedules.ExponentialDecay(lrate,
decay_steps=args.lrate_decay * 1000, decay_rate=0.1)
optimizer = tf.keras.optimizers.Adam(lrate)
models['optimizer'] = optimizer
global_step = tf.compat.v1.train.get_or_create_global_step()
global_step.assign(start)
# Prepare raybatch tensor if batching random rays
N_rand = args.N_rand
use_batching = not args.no_batching
if use_batching:
# For random ray batching.
#
# Constructs an array 'rays_rgb' of shape [N*H*W, 3, 3] where axis=1 is
# interpreted as,
# axis=0: ray origin in world space
# axis=1: ray direction in world space
# axis=2: observed RGB color of pixel
print('get rays')
# get_rays_np() returns rays_origin=[H, W, 3], rays_direction=[H, W, 3]
# for each pixel in the image. This stack() adds a new dimension.
rays = [get_rays_np(H, W, focal, p) for p in poses[:, :3, :4]]
rays = np.stack(rays, axis=0) # [N, ro+rd, H, W, 3]
print('done, concats')
# [N, ro+rd+rgb, H, W, 3]
rays_rgb = np.concatenate([rays, images[:, None, ...]], 1)
# [N, H, W, ro+rd+rgb, 3]
rays_rgb = np.transpose(rays_rgb, [0, 2, 3, 1, 4])
rays_rgb = np.stack([rays_rgb[i]
for i in i_train], axis=0) # train images only
# [(N-1)*H*W, ro+rd+rgb, 3]
rays_rgb = np.reshape(rays_rgb, [-1, 3, 3])
rays_rgb = rays_rgb.astype(np.float32)
print('shuffle rays')
np.random.shuffle(rays_rgb)
print('done')
i_batch = 0
N_iters = 1000000
print('Begin')
print('TRAIN views are', i_train)
print('TEST views are', i_test)
print('VAL views are', i_val)
# Summary writers
writer = tf.contrib.summary.create_file_writer(
os.path.join(basedir, 'summaries', expname))
writer.set_as_default()
for i in range(start, N_iters):
time0 = time.time()
# Sample random ray batch
if use_batching:
# Random over all images
batch = rays_rgb[i_batch:i_batch+N_rand] # [B, 2+1, 3*?]
batch = tf.transpose(batch, [1, 0, 2])
# batch_rays[i, n, xyz] = ray origin or direction, example_id, 3D position
# target_s[n, rgb] = example_id, observed color.
batch_rays, target_s = batch[:2], batch[2]
i_batch += N_rand
if i_batch >= rays_rgb.shape[0]:
np.random.shuffle(rays_rgb)
i_batch = 0
else:
# Random from one image
img_i = np.random.choice(i_train)
target = images[img_i]
pose = poses[img_i, :3, :4]
if N_rand is not None:
rays_o, rays_d = get_rays(H, W, focal, pose)
if i < args.precrop_iters:
dH = int(H//2 * args.precrop_frac)
dW = int(W//2 * args.precrop_frac)
coords = tf.stack(tf.meshgrid(
tf.range(H//2 - dH, H//2 + dH),
tf.range(W//2 - dW, W//2 + dW),
indexing='ij'), -1)
if i < 10:
print('precrop', dH, dW, coords[0,0], coords[-1,-1])
else:
coords = tf.stack(tf.meshgrid(
tf.range(H), tf.range(W), indexing='ij'), -1)
coords = tf.reshape(coords, [-1, 2])
select_inds = np.random.choice(
coords.shape[0], size=[N_rand], replace=False)
select_inds = tf.gather_nd(coords, select_inds[:, tf.newaxis])
rays_o = tf.gather_nd(rays_o, select_inds)
rays_d = tf.gather_nd(rays_d, select_inds)
batch_rays = tf.stack([rays_o, rays_d], 0)
target_s = tf.gather_nd(target, select_inds)
##### Core optimization loop #####
with tf.GradientTape() as tape:
# Make predictions for color, disparity, accumulated opacity.
rgb, disp, acc, extras = render(
H, W, focal, chunk=args.chunk, rays=batch_rays,
verbose=i < 10, retraw=True, **render_kwargs_train)
# Compute MSE loss between predicted and true RGB.
img_loss = img2mse(rgb, target_s)
trans = extras['raw'][..., -1]
loss = img_loss
psnr = mse2psnr(img_loss)
# Add MSE loss for coarse-grained model
if 'rgb0' in extras:
img_loss0 = img2mse(extras['rgb0'], target_s)
loss += img_loss0
psnr0 = mse2psnr(img_loss0)
gradients = tape.gradient(loss, grad_vars)
optimizer.apply_gradients(zip(gradients, grad_vars))
dt = time.time()-time0
##### end #####
# Rest is logging
def save_weights(net, prefix, i):
path = os.path.join(
basedir, expname, '{}_{:06d}.npy'.format(prefix, i))
np.save(path, net.get_weights())
print('saved weights at', path)
if i % args.i_weights == 0:
for k in models:
save_weights(models[k], k, i)
if i % args.i_video == 0 and i > 0:
rgbs, disps = render_path(
render_poses, hwf, args.chunk, render_kwargs_test)
print('Done, saving', rgbs.shape, disps.shape)
moviebase = os.path.join(
basedir, expname, '{}_spiral_{:06d}_'.format(expname, i))
imageio.mimwrite(moviebase + 'rgb.mp4',
to8b(rgbs), fps=30, quality=8)
imageio.mimwrite(moviebase + 'disp.mp4',
to8b(disps / np.max(disps)), fps=30, quality=8)
if args.use_viewdirs:
render_kwargs_test['c2w_staticcam'] = render_poses[0][:3, :4]
rgbs_still, _ = render_path(
render_poses, hwf, args.chunk, render_kwargs_test)
render_kwargs_test['c2w_staticcam'] = None
imageio.mimwrite(moviebase + 'rgb_still.mp4',
to8b(rgbs_still), fps=30, quality=8)
if i % args.i_testset == 0 and i > 0:
testsavedir = os.path.join(
basedir, expname, 'testset_{:06d}'.format(i))
os.makedirs(testsavedir, exist_ok=True)
print('test poses shape', poses[i_test].shape)
render_path(poses[i_test], hwf, args.chunk, render_kwargs_test,
gt_imgs=images[i_test], savedir=testsavedir)
print('Saved test set')
if i % args.i_print == 0 or i < 10:
print(expname, i, psnr.numpy(), loss.numpy(), global_step.numpy())
print('iter time {:.05f}'.format(dt))
with tf.contrib.summary.record_summaries_every_n_global_steps(args.i_print):
tf.contrib.summary.scalar('loss', loss)
tf.contrib.summary.scalar('psnr', psnr)
tf.contrib.summary.histogram('tran', trans)
if args.N_importance > 0:
tf.contrib.summary.scalar('psnr0', psnr0)
if i % args.i_img == 0:
# Log a rendered validation view to Tensorboard
img_i = np.random.choice(i_val)
target = images[img_i]
pose = poses[img_i, :3, :4]
rgb, disp, acc, extras = render(H, W, focal, chunk=args.chunk, c2w=pose,
**render_kwargs_test)
psnr = mse2psnr(img2mse(rgb, target))
# Save out the validation image for Tensorboard-free monitoring
testimgdir = os.path.join(basedir, expname, 'tboard_val_imgs')
if i==0:
os.makedirs(testimgdir, exist_ok=True)
imageio.imwrite(os.path.join(testimgdir, '{:06d}.png'.format(i)), to8b(rgb))
with tf.contrib.summary.record_summaries_every_n_global_steps(args.i_img):
tf.contrib.summary.image('rgb', to8b(rgb)[tf.newaxis])
tf.contrib.summary.image(
'disp', disp[tf.newaxis, ..., tf.newaxis])
tf.contrib.summary.image(
'acc', acc[tf.newaxis, ..., tf.newaxis])
tf.contrib.summary.scalar('psnr_holdout', psnr)
tf.contrib.summary.image('rgb_holdout', target[tf.newaxis])
if args.N_importance > 0:
with tf.contrib.summary.record_summaries_every_n_global_steps(args.i_img):
tf.contrib.summary.image(
'rgb0', to8b(extras['rgb0'])[tf.newaxis])
tf.contrib.summary.image(
'disp0', extras['disp0'][tf.newaxis, ..., tf.newaxis])
tf.contrib.summary.image(
'z_std', extras['z_std'][tf.newaxis, ..., tf.newaxis])
global_step.assign_add(1)
if __name__ == '__main__':
train()
nerf/run_nerf_helpers.py deleted 100644 → 0
View file @ 2824f796
import os
import sys
import tensorflow as tf
import numpy as np
import imageio
import json
# Misc utils
def img2mse(x, y): return tf.reduce_mean(tf.square(x - y))
def mse2psnr(x): return -10.*tf.log(x)/tf.log(10.)
def to8b(x): return (255*np.clip(x, 0, 1)).astype(np.uint8)
# Positional encoding
class Embedder:
def __init__(self, **kwargs):
self.kwargs = kwargs
self.create_embedding_fn()
def create_embedding_fn(self):
embed_fns = []
d = self.kwargs['input_dims']
out_dim = 0
if self.kwargs['include_input']:
embed_fns.append(lambda x: x)
out_dim += d
max_freq = self.kwargs['max_freq_log2']
N_freqs = self.kwargs['num_freqs']
if self.kwargs['log_sampling']:
freq_bands = 2.**tf.linspace(0., max_freq, N_freqs)
else:
freq_bands = tf.linspace(2.**0., 2.**max_freq, N_freqs)
for freq in freq_bands:
for p_fn in self.kwargs['periodic_fns']:
embed_fns.append(lambda x, p_fn=p_fn,
freq=freq: p_fn(x * freq))
out_dim += d
self.embed_fns = embed_fns
self.out_dim = out_dim
def embed(self, inputs):
return tf.concat([fn(inputs) for fn in self.embed_fns], -1)
def get_embedder(multires, i=0):
if i == -1:
return tf.identity, 3
embed_kwargs = {
'include_input': True,
'input_dims': 3,
'max_freq_log2': multires-1,
'num_freqs': multires,
'log_sampling': True,
'periodic_fns': [tf.math.sin, tf.math.cos],
}
embedder_obj = Embedder(**embed_kwargs)
def embed(x, eo=embedder_obj): return eo.embed(x)
return embed, embedder_obj.out_dim
# Model architecture
def init_nerf_model(D=8, W=256, input_ch=3, input_ch_views=3, output_ch=4, skips=[4], use_viewdirs=False):
relu = tf.keras.layers.ReLU()
def dense(W, act=relu): return tf.keras.layers.Dense(W, activation=act)
print('MODEL', input_ch, input_ch_views, type(
input_ch), type(input_ch_views), use_viewdirs)
input_ch = int(input_ch)
input_ch_views = int(input_ch_views)
inputs = tf.keras.Input(shape=(input_ch + input_ch_views))
inputs_pts, inputs_views = tf.split(inputs, [input_ch, input_ch_views], -1)
inputs_pts.set_shape([None, input_ch])
inputs_views.set_shape([None, input_ch_views])
print(inputs.shape, inputs_pts.shape, inputs_views.shape)
outputs = inputs_pts
for i in range(D):
outputs = dense(W)(outputs)
if i in skips:
outputs = tf.concat([inputs_pts, outputs], -1)
if use_viewdirs:
alpha_out = dense(1, act=None)(outputs)
bottleneck = dense(256, act=None)(outputs)
inputs_viewdirs = tf.concat(
[bottleneck, inputs_views], -1) # concat viewdirs
outputs = inputs_viewdirs
# The supplement to the paper states there are 4 hidden layers here, but this is an error since
# the experiments were actually run with 1 hidden layer, so we will leave it as 1.
for i in range(1):
outputs = dense(W//2)(outputs)
outputs = dense(3, act=None)(outputs)
outputs = tf.concat([outputs, alpha_out], -1)
else:
outputs = dense(output_ch, act=None)(outputs)
model = tf.keras.Model(inputs=inputs, outputs=outputs)
return model
# Ray helpers
def get_rays(H, W, focal, c2w):
"""Get ray origins, directions from a pinhole camera."""
i, j = tf.meshgrid(tf.range(W, dtype=tf.float32),
tf.range(H, dtype=tf.float32), indexing='xy')
dirs = tf.stack([(i-W*.5)/focal, -(j-H*.5)/focal, -tf.ones_like(i)], -1)
rays_d = tf.reduce_sum(dirs[..., np.newaxis, :] * c2w[:3, :3], -1)
rays_o = tf.broadcast_to(c2w[:3, -1], tf.shape(rays_d))
return rays_o, rays_d
def get_rays_np(H, W, focal, c2w):
"""Get ray origins, directions from a pinhole camera."""
i, j = np.meshgrid(np.arange(W, dtype=np.float32),
np.arange(H, dtype=np.float32), indexing='xy')
dirs = np.stack([(i-W*.5)/focal, -(j-H*.5)/focal, -np.ones_like(i)], -1)
rays_d = np.sum(dirs[..., np.newaxis, :] * c2w[:3, :3], -1)
rays_o = np.broadcast_to(c2w[:3, -1], np.shape(rays_d))
return rays_o, rays_d
def ndc_rays(H, W, focal, near, rays_o, rays_d):
"""Normalized device coordinate rays.
Space such that the canvas is a cube with sides [-1, 1] in each axis.
Args:
H: int. Height in pixels.
W: int. Width in pixels.
focal: float. Focal length of pinhole camera.
near: float or array of shape[batch_size]. Near depth bound for the scene.
rays_o: array of shape [batch_size, 3]. Camera origin.
rays_d: array of shape [batch_size, 3]. Ray direction.
Returns:
rays_o: array of shape [batch_size, 3]. Camera origin in NDC.
rays_d: array of shape [batch_size, 3]. Ray direction in NDC.
"""
# Shift ray origins to near plane
t = -(near + rays_o[..., 2]) / rays_d[..., 2]
rays_o = rays_o + t[..., None] * rays_d
# Projection
o0 = -1./(W/(2.*focal)) * rays_o[..., 0] / rays_o[..., 2]
o1 = -1./(H/(2.*focal)) * rays_o[..., 1] / rays_o[..., 2]
o2 = 1. + 2. * near / rays_o[..., 2]
d0 = -1./(W/(2.*focal)) * \
(rays_d[..., 0]/rays_d[..., 2] - rays_o[..., 0]/rays_o[..., 2])
d1 = -1./(H/(2.*focal)) * \
(rays_d[..., 1]/rays_d[..., 2] - rays_o[..., 1]/rays_o[..., 2])
d2 = -2. * near / rays_o[..., 2]
rays_o = tf.stack([o0, o1, o2], -1)
rays_d = tf.stack([d0, d1, d2], -1)
return rays_o, rays_d
# Hierarchical sampling helper
def sample_pdf(bins, weights, N_samples, det=False):
# Get pdf
weights += 1e-5 # prevent nans
pdf = weights / tf.reduce_sum(weights, -1, keepdims=True)
cdf = tf.cumsum(pdf, -1)
cdf = tf.concat([tf.zeros_like(cdf[..., :1]), cdf], -1)
# Take uniform samples
if det:
u = tf.linspace(0., 1., N_samples)
u = tf.broadcast_to(u, list(cdf.shape[:-1]) + [N_samples])
else:
u = tf.random.uniform(list(cdf.shape[:-1]) + [N_samples])
# Invert CDF
inds = tf.searchsorted(cdf, u, side='right')
below = tf.maximum(0, inds-1)
above = tf.minimum(cdf.shape[-1]-1, inds)
inds_g = tf.stack([below, above], -1)
cdf_g = tf.gather(cdf, inds_g, axis=-1, batch_dims=len(inds_g.shape)-2)
bins_g = tf.gather(bins, inds_g, axis=-1, batch_dims=len(inds_g.shape)-2)
denom = (cdf_g[..., 1]-cdf_g[..., 0])
denom = tf.where(denom < 1e-5, tf.ones_like(denom), denom)
t = (u-cdf_g[..., 0])/denom
samples = bins_g[..., 0] + t * (bins_g[..., 1]-bins_g[..., 0])
return samples
notebook/test_data_loader.ipynb
View file @ 6294701e
......@@ -20,7 +20,6 @@
"from utils import sphere\n",
"from utils import device\n",
"from utils import misc\n",
"from utils.constants import *\n",
"from utils.mem_profiler import *\n",
"from data.dataset_factory import DatasetFactory\n",
"from data.loader import DataLoader\n",
......
notebook/test_lf_syn.ipynb
View file @ 6294701e
......@@ -6,13 +6,11 @@
"metadata": {},
"outputs": [],
"source": [
"import sys\n",
"\n",
"import torch\n",
"import matplotlib.pyplot as plt\n",
"from data.lf_syn import LightFieldSynDataset\n",
"from utils import img\n",
"from utils.constants import *\n",
"from utils import math\n",
"from nets.trans_unet import LatentSpaceTransformer\n",
"\n",
"device = torch.device(\"cuda:2\")\n"
......@@ -90,7 +88,7 @@
"outputs": [],
"source": [
"\n",
"mask = (torch.sum(trans_images[0], 1) > TINY_FLOAT).to(dtype=torch.float)\n",
"mask = (torch.sum(trans_images[0], 1) > math.tiny).to(dtype=torch.float)\n",
"blended = torch.sum(trans_images[0], 0)\n",
"weight = torch.sum(mask, 0)\n",
"blended = blended / weight.unsqueeze(0)\n",
......@@ -133,4 +131,4 @@
},
"nbformat": 4,
"nbformat_minor": 2
}
\ No newline at end of file
}
notebook/test_sphere.ipynb
View file @ 6294701e
This source diff could not be displayed because it is too large. You can view the blob instead.
notebook/test_voxel.ipynb 0 → 100644
View file @ 6294701e
{
"cells": [
{
"cell_type": "code",
"execution_count": 26,
"metadata": {},
"outputs": [],
"source": [
"import torch\n",
"import sys\n",
"import os\n",
"\n",
"rootdir = os.path.abspath(sys.path[0] + '/../')\n",
"sys.path.append(rootdir)\n",
"\n",
"from utils.voxels import *\n",
"\n",
"bbox, steps = torch.tensor([[-2, -3.14159, 1], [2, 3.14159, 0]]), torch.tensor([2, 3, 3])\n",
"voxel_size = (bbox[1] - bbox[0]) / steps\n",
"voxels = init_voxels(bbox, steps)\n",
"corners, corner_indices = get_corners(voxels, bbox, steps)\n",
"voxel_indices_in_grid = torch.arange(-1, voxels.shape[0])\n",
"emb = torch.nn.Embedding(corners.shape[0], 3, _weight=corners)"
]
},
{
"cell_type": "code",
"execution_count": 27,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"torch.Size([11, 3]) tensor([ 0, -1, -1, 1, -1, -1, 2, 3, 4, -1, 5, 6, -1, 7, 8, -1, 9, 10])\n"
]
}
],
"source": [
"keeps = torch.tensor([True]*18)\n",
"keeps[torch.tensor([1,2,4,5,9,12,15])] = False\n",
"voxels = voxels[keeps]\n",
"corner_indices = corner_indices[keeps]\n",
"grid_indices = to_grid_indices(voxels, bbox, steps)\n",
"voxel_indices_in_grid = grid_indices.new_full([steps.prod().item() + 1], -1)\n",
"voxel_indices_in_grid[grid_indices + 1] = torch.arange(voxels.shape[0])\n",
"print(voxels.shape, voxel_indices_in_grid)"
]
},
{
"cell_type": "code",
"execution_count": 28,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"torch.Size([88, 3]) torch.Size([185, 3]) torch.Size([88, 8])\n"
]
}
],
"source": [
"new_voxels = split_voxels(voxels, (bbox[1] - bbox[0]) / steps, 2, align_border=False).reshape(-1, 3)\n",
"new_corners, new_corner_indices = get_corners(new_voxels, bbox, steps * 2)\n",
"print(new_voxels.shape, new_corners.shape, new_corner_indices.shape)"
]
},
{
"cell_type": "code",
"execution_count": 30,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"tensor([ 0, 0, -1, 0, 0, -1, 1, 1, -1, 1, 1, -1, 2, 2, 3, 3, 4, 4,\n",
" 4, 2, 2, 3, 3, 4, 4, 4, 2, 2, 3, 3, 4, 4, 4, 0, 0, -1,\n",
" 0, 0, -1, 1, 1, -1, 1, 1, -1, 2, 2, 3, 3, 4, 4, 4, 2, 2,\n",
" 3, 3, 4, 4, 4, 2, 2, 3, 3, 4, 4, 4, -1, -1, 5, 5, 6, 6,\n",
" 6, -1, -1, 5, 5, 6, 6, 6, -1, -1, 7, 7, 8, 8, 8, -1, -1, 7,\n",
" 7, 8, 8, 8, -1, -1, 9, 9, 10, 10, 10, -1, -1, 9, 9, 10, 10, 10,\n",
" -1, -1, 9, 9, 10, 10, 10, 5, 5, 6, 6, 6, 5, 5, 6, 6, 6, 7,\n",
" 7, 8, 8, 8, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10, 9, 9, 10, 10,\n",
" 10, 9, 9, 10, 10, 10, 5, 5, 6, 6, 6, 5, 5, 6, 6, 6, 7, 7,\n",
" 8, 8, 8, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10, 9, 9, 10, 10, 10,\n",
" 9, 9, 10, 10, 10])\n",
"tensor(0)\n"
]
}
],
"source": [
"voxel_indices_of_new_corner = voxel_indices_in_grid[to_flat_indices(to_grid_coords(new_corners, bbox, steps).min(steps - 1), steps) + 1]\n",
"print(voxel_indices_of_new_corner)\n",
"p_of_new_corners = (new_corners - voxels[voxel_indices_of_new_corner]) / voxel_size + .5\n",
"print(((new_corners - trilinear_interp(p_of_new_corners, emb(corner_indices[voxel_indices_of_new_corner]))) > 1e-6).sum())"
]
}
],
"metadata": {
"interpreter": {
"hash": "08b118544df3cb8970a671e5837a88fd458f4d4c799ef1fb2709465a22a45b92"
},
"kernelspec": {
"display_name": "Python 3.9.5 64-bit ('base': conda)",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.5"
},
"orig_nbformat": 4
},
"nbformat": 4,
"nbformat_minor": 2
}
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